阅读说明：本技术 一种有机化合物和应用以及使用其的有机电致发光器件 (Organic compound, application and organic electroluminescent device using organic compound ) 是由 祁文举 薛震 王金平 于 2020-12-15 设计创作，主要内容包括：本申请涉及一种有机化合物,该有机化合物具有如下式(1)所示的结构：其中,Y选自C(R’)或N；X_1、X_2、X_3相同或不同,且分别独立地选自C(R’)或N,且所述X_1、X_2、X_3及Y中的至少一个为N；Ar_1、Ar_2、Ar_3和Ar_4相同或不同,且各自独立地选自氢、取代或未取代的碳原子数为4-30的芳基、取代或未取代的碳原子数为4-30的杂芳基。本申请的有机化合物为多聚吡啶衍生物,具有大共轭结构,该有机化合物具有良好的接受电子和传递电子的能力,将其用于有机电致发光器件可以有效地提高器件的发光效率和使用寿命。(The present application relates to an organic compound having a structure represented by the following formula (1): wherein Y is selected from C (R') or N; x 1 、X 2 、X 3 Are the same or different and are each independently selected from C (R') or N, and X is 1 、X 2 、X 3 And at least one of Y is N; ar (Ar) 1 、Ar 2 、Ar 3 And Ar 4 Are the same or different and eachIndependently selected from hydrogen, substituted or unsubstituted aryl of 4 to 30 carbon atoms, substituted or unsubstituted heteroaryl of 4 to 30 carbon atoms. The organic compound is a polypyridine derivative, has a large conjugated structure, has good capability of accepting electrons and transferring electrons, and can effectively improve the luminous efficiency and the service life of a device when being used for an organic electroluminescent device.)

1. An organic compound characterized by having a structure represented by the following formula (1):

wherein the content of the first and second substances,

X₁、X₂、X₃and Y are the same or different and are each independently selected from C (R') or N, wherein X is₁、X₂、X₃And R' in Y are the same or different and are independently selected from hydrogen, C1-10 alkyl, C6-18 aryl, and C63-18 heteroaryl and 3-10 cycloalkyl;

said X₁、X₂、X₃And at least one of Y is N;

Ar₁、Ar₂、Ar₃and Ar₄The same or different, and each is independently selected from hydrogen, substituted or unsubstituted aryl with 6-30 carbon atoms, and substituted or unsubstituted heteroaryl with 4-30 carbon atoms;

ar is₁、Ar₂、Ar₃、Ar₄The substituents are the same or different and are respectively and independently selected from deuterium, cyano, halogen, straight-chain alkyl with 1-3 carbon atoms, branched-chain alkyl with 3-7 carbon atoms, aryl with 6-18 carbon atoms, heteroaryl with 3-18 carbon atoms, cycloalkyl with 3-10 carbon atoms, heterocycloalkyl with 2-7 carbon atoms, alkoxy with 1-7 carbon atoms, alkylthio with 1-7 carbon atoms, dialkylamino with 2-8 carbon atoms and diarylamino with 12-18 carbon atoms.

2. The organic compound according to claim 1, wherein the organic compound has a structure represented by the following formula (1):

wherein the content of the first and second substances,

X₁、X₂、X₃and Y are the same or different and are each independently selected from C (R') or N, wherein X is₁、X₂、X₃And R' in Y is the same or different and is independently selected from hydrogen, C1-10 alkyl, C6-18 aryl, C3-18 heteroaryl, C3-10 cycloalkyl;

said X₁、X₂、X₃And at least one of Y is N;

Ar₁、Ar₂、Ar₃and Ar₄Are the same or different and are each independently selected fromSubstituted or unsubstituted aryl with 6 to 30 carbon atoms, substituted or unsubstituted heteroaryl with 6 to 30 carbon atoms;

ar is₁、Ar₂、Ar₃、Ar₄The substituents are the same or different and are respectively and independently selected from deuterium, cyano, halogen, straight-chain alkyl with 1-3 carbon atoms, branched-chain alkyl with 3-7 carbon atoms, aryl with 6-18 carbon atoms, heteroaryl with 3-18 carbon atoms, cycloalkyl with 3-10 carbon atoms, heterocycloalkyl with 2-7 carbon atoms, alkoxy with 1-7 carbon atoms, alkylthio with 1-7 carbon atoms, dialkylamino with 2-8 carbon atoms and diarylamino with 12-18 carbon atoms.

3. The organic compound of claim 1, wherein Ar is Ar₁、Ar₂、Ar₃、Ar₄The substituents are the same or different and are independently selected from deuterium, cyano, fluorine, straight-chain alkyl group having 1 to 3 carbon atoms, branched-chain alkyl group having 3 to 5 carbon atoms, and aryl group having 6 to 18 carbon atoms.

4. The organic compound of claim 1, wherein Ar is Ar₁、Ar₂、Ar₃And Ar₄The same or different, and each is independently selected from substituted or unsubstituted aryl groups having 6 to 25 carbon atoms.

5. The organic compound of claim 1, wherein Ar is Ar₁、Ar₂、Ar₃And Ar₄The same or different, and each is independently selected from substituted or unsubstituted phenyl, substituted or unsubstituted biphenyl, substituted or unsubstituted naphthyl, substituted or unsubstituted fluorenyl, substituted or unsubstituted phenanthryl, substituted or unsubstituted terphenyl, substituted or unsubstituted pyridyl, substituted or unsubstituted pyrimidyl, and substituted or unsubstituted anthracyl.

6. The organic compound according to claim 1, which is characterized byCharacterized in that Ar is₁、Ar₂、Ar₃、Ar₄The substituents on the aryl group are the same or different and are independently selected from deuterium, cyano, fluorine, methyl, ethyl, isopropyl, tert-butyl, phenyl, naphthyl, phenanthryl and biphenyl.

7. The organic compound of claim 1, wherein Ar is Ar₁、Ar₂、Ar₃And Ar₄The same or different, and each is independently selected from the group consisting of:

wherein the content of the first and second substances,represents a chemical bond;

n₁、n₄、n₇are the same or different and are each independently selected from 0, 1,2, 3,4, 5;

n₅、n₆、n₈、n₉are the same or different and are each independently selected from 0, 1,2, 3, 4;

n₂selected from 0, 1,2, 3,4, 5, 6, 7;

n₃、n₁₀identical or different and selected from 0, 1,2, 3,4, 5, 6, 7, 8, 9;

z is selected from O, S, Si (E)₁₁E₁₂)、C(E₁₃E₁₄)、N(E₁₅)、Se；

E₁To E₁₅The same or different, and are respectively and independently selected from hydrogen, deuterium, halogen, cyano, alkyl with 1-10 carbon atoms, aryl with 6-18 carbon atoms, heteroaryl with 3-18 carbon atoms and cycloalkyl with 3-10 carbon atoms; or E₁₁And E₁₂Can be joined to form a ring, or E₁₃And E₁₄Can be connected to form a ring.

8. The organic compound of claim 1, wherein Ar is Ar₁、Ar₂、Ar₃And Ar₄Are the same or different and are each independently selected from the group consisting of:

9. the organic compound of claim 1, wherein Ar is Ar₁、Ar₂、Ar₃And Ar₄Are the same or different and are each independently selected from hydrogen or the following groups:

10. the organic compound of claim 1, wherein Ar is Ar₁、Ar₂、Ar₃And Ar₄Are the same or different and are each independently selected from hydrogen or the following groups:

11. an organic compound according to claim 1, wherein each R' is selected from hydrogen, phenyl, biphenyl, naphthyl.

12. The organic compound of claim 1, wherein the organic compound is selected from one or more of the following organic compounds P1-P180:

13. use of an organic compound according to any one of claims 1 to 12 in an organic electroluminescent device.

14. Use according to claim 13, characterized in that the organic compound is used as an electron transport layer material for the organic electroluminescent device.

15. An organic electroluminescent device comprising an anode, a cathode, and at least one functional layer between the anode layer and the cathode layer, the functional layers comprising a hole injection layer, a hole transport layer, an organic electroluminescent layer, an electron transport layer, and an electron injection layer, wherein the electron transport layer contains the organic compound according to any one of claims 1 to 12.

Technical Field

The application belongs to the technical field of organic light-emitting materials, and particularly provides an organic compound, application thereof and an organic electroluminescent device using the organic compound.

Background

An organic light-emitting diode (OLED) is simply referred to as an OLED. The principle is that when an electric field is applied to the anode and the cathode, holes on the anode side and electrons on the cathode side move to the light emitting layer and are combined to form excitons in the light emitting layer, the excitons are in an excited state and release energy outwards, and the excitons emit light outwards in the process of changing the energy released from the excited state to the energy released from the ground state. Since Kodak corporation reports electroluminescence of organic molecules in 1987 and Cambridge university in England reports electroluminescence of polymers in 1990, various countries in the world have developed research and development.

The material has the advantages of simple structure, high yield, low cost, active luminescence, high response speed, high fraction and the like, and has the performances of low driving voltage, full solid state, no vacuum, oscillation resistance, low temperature (-40 ℃) resistance and the like. In recent years, the OLED material has been widely used in the field of smart phones, is considered as a new technology that is most likely to replace liquid crystal displays in the future, and has attracted great attention.

In order to improve the brightness, efficiency and lifetime of organic electroluminescent devices, multilayer structures are commonly used in organic electroluminescent devices, which may include one or more of the following film layers: a Hole Injection Layer (HIL), a Hole Transport Layer (HTL), an electron-blocking layer (EBL), an organic electroluminescent layer (EML), a hole-blocking layer (HBL), an Electron Transport Layer (ETL), and an Electron Injection Layer (EIL), etc. The film layers can improve the injection efficiency of carriers (holes and electrons) between interfaces of each layer and balance the capability of the carriers for transmitting between the layers, thereby improving the brightness and the efficiency of the organic electroluminescent device. Efficient commercial organic light emitting diodes employ phosphors containing organometallic iridium complexes because they can trap both singlet and triplet excitons, thereby achieving 100% internal quantum efficiency. However, since the excited state exciton lifetime of the transition metal complex is relatively too long and concentration quenching effect of the light emitting material is easily generated, the unnecessary triplet-triplet (T1-T1) is quenched in the actual operation of the device, and in order to overcome this problem, researchers often incorporate triplet light emitting objects into organic host materials.

The application-oriented organic electron transport material should have high thermal stability, high electron mobility, and a low LUMO level (favorable for electron injection). Although a large number of organic electron transport materials have been reported, it has been challenging to design and synthesize organic small molecule electron transport materials with excellent overall properties.

The derivative taking heterocyclic aryl as a parent nucleus provided by the application can be applied to organic electroluminescent (OLED) devices with high efficiency and long service life as an organic micromolecule electron transmission material.

Disclosure of Invention

The purpose of the present application is to improve the luminous efficiency and the service life of an organic electroluminescent device.

In order to achieve the above object, the present application provides an organic compound having a structure represented by the following formula (1):

wherein the content of the first and second substances,

X₁、X₂、X₃and Y are the same or different and are each independently selected from C (R') or N, wherein X is₁、X₂、X₃And R' in Y is the same or different and is independently selected from hydrogen, C1-10 alkyl, C6-18 aryl, C3-18 heteroaryl, C3-10 cycloalkyl;

said X₁、X₂、X₃And at least one of Y is N;

Ar₁、Ar₂、Ar₃and Ar₄The same or different, and each is independently selected from hydrogen, substituted or unsubstituted aryl with 6-30 carbon atoms, and substituted or unsubstituted heteroaryl with 4-30 carbon atoms;

ar is₁、Ar₂、Ar₃、Ar₄The substituents are the same or different and are respectively and independently selected from deuterium, cyano, halogen, straight-chain alkyl with 1-3 carbon atoms, branched-chain alkyl with 3-7 carbon atoms, aryl with 6-18 carbon atoms, heteroaryl with 3-18 carbon atoms, cycloalkyl with 3-10 carbon atoms, heterocycloalkyl with 2-7 carbon atoms, alkoxy with 1-7 carbon atoms, alkylthio with 1-7 carbon atoms, dialkylamino with 2-8 carbon atoms and diarylamino with 12-18 carbon atoms.

In a second aspect, the present application provides a use of the organic compound provided in the first aspect of the present application in an organic electroluminescent device.

In a third aspect, the present invention provides an organic electroluminescent device comprising an anode, a cathode, and at least one functional layer interposed between the anode and the cathode, the functional layer comprising a hole injection layer, a hole transport layer, an organic electroluminescent layer, an electron transport layer and an electron injection layer, the electron transport layer comprising the organic compound provided in the first aspect of the present invention.

Through the technical scheme, the organic compound has high stability and hole transmission capacity, and can effectively improve the luminous efficiency and prolong the service life of the device when being used for an electron transmission layer in an organic electroluminescent device.

Additional features and advantages of the present application will be described in detail in the detailed description which follows.

Drawings

The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description serve to explain the principles of the application and not to limit the application. In the drawings:

fig. 1 is a schematic structural diagram of an organic electroluminescent device according to an embodiment of the present application, in which reference numerals of main elements are described as follows:

100 anode 200 cathode 300 functional layer 310 hole injection layer

320 hole transport layer 330 Electron blocking layer 340 organic electroluminescent layer 350 hole blocking layer

360 electron transport layer 370 electron injection layer

Detailed Description

Exemplary embodiments will now be described more fully with reference to the accompanying drawings. The exemplary embodiments, however, may be embodied in many different forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of example embodiments to those skilled in the art. The described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments. In the following description, numerous specific details are provided to give a thorough understanding of embodiments of the application.

In the drawings, the thickness of regions and layers may be exaggerated for clarity. The same reference numerals denote the same or similar structures in the drawings, and thus detailed descriptions thereof will be omitted.

The described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments. In the following description, numerous specific details are provided to give a thorough understanding of embodiments of the application. One skilled in the relevant art will recognize, however, that the subject matter of the present application can be practiced without one or more of the specific details, or with other methods, components, materials, and so forth. In other instances, well-known structures, materials, or operations are not shown or described in detail to avoid obscuring major technical ideas of the application.

The term "the" is used to indicate the presence of one or more elements/components/etc.; the terms "comprising" and "having" are intended to be inclusive and mean that there may be additional elements/components/etc. other than the listed elements/components/etc.

A first aspect of the present application provides an organic compound having a structure represented by the following formula (1):

wherein the content of the first and second substances,

X₁、X₂、X₃and Y are the same or different and are each independently selected from C (R') or N, wherein X is₁、X₂、X₃And R' in Y is the same or different and is independently selected from hydrogen, C1-10 alkyl, C6-18 aryl, C3-18 heteroaryl, C3-10 cycloalkyl;

said X₁、X₂、X₃And at least one of Y is N;

Ar₁、Ar₂、Ar₃and Ar₄The same or different, and each is independently selected from hydrogen, substituted or unsubstituted aryl with 6-30 carbon atoms, and substituted or unsubstituted heteroaryl with 4-30 carbon atoms;

ar is₁、Ar₂、Ar₃、Ar₄The substituents are the same or different and are independently selected from deuterium, cyano, halogen, straight-chain alkyl group having 1 to 3 carbon atoms, branched-chain alkyl group having 3 to 7 carbon atoms, aryl group having 6 to 18 carbon atoms, heteroaryl group having 3 to 18 carbon atoms, cycloalkyl group having 3 to 10 carbon atoms, heterocycloalkyl group having 2 to 7 carbon atoms, alkoxy group having 1 to 7 carbon atoms, and alkylthio group having 1 to 7 carbon atomsA dialkylamino group having 2 to 8 carbon atoms, and a diarylamino group having 12 to 18 carbon atoms.

In the present application, "said X₁、X₂、X₃And at least one of Y is N' means X₁、X₂、X₃And any one of Y is N; or, X₁、X₂、X₃And any two of Y are N, e.g. X₁、X₂Are respectively N, X₁、X₃Are respectively N, X₂、X₃Are respectively N, X₁Y is N, X respectively₂Y is N, X respectively₃And Y are each N; or, X₁、X₂、X₃And any three of Y are N, e.g. X₁、X₂、X₃Are respectively N, X₁、X₂Y is N, X respectively₂、X₃Y is N, X respectively₁、X₃Y is N and the rest is CR'; or, X₁、X₂、X₃And Y is N.

The organic compound is a planar aromatic compound with a large conjugated structure formed by a plurality of pyridine groups, and the pyridine groups have good electron accepting capacity and can effectively transfer electrons under a certain forward bias. The strong plane ductility of the compound molecules can enhance the rigidity of the material, prolong the service life of the material, and simultaneously, the plane can effectively improve the electron mobility. The pyridine group has lower reduction potential, is beneficial to receiving electrons so as to be beneficial to electron transmission, and can improve the charge transfer capability of the organic compound, so that the organic compound has good electron transmission performance. In addition, a large conjugated system is easily formed by the molecular parent nucleus and the aryl/heteroaryl, a plurality of nitrogen atom centers exist at the same time, the density of electron clouds in molecules is increased, the HOMO energy level can be further adjusted to a proper level, the electron mobility and the transition rate are further improved, and the organic electroluminescent device has high device efficiency.

The organic compound can be used as an electron transport layer material of an organic electroluminescent device, and the organic electroluminescent device prepared from the organic compound has lower driving voltage, higher luminous efficiency and longer service life.

In the present application, the descriptions "… … is independently" and "… … is independently" and "… … is independently selected from" are interchangeable, and should be understood in a broad sense, which means that the specific items expressed between the same symbols do not affect each other in different groups, or that the specific items expressed between the same symbols do not affect each other in the same groups. For example,wherein each q is independently 0, 1,2 or 3, each R "is independently selected from hydrogen, deuterium, fluoro, chloro" and has the meaning: the formula Q-1 represents that Q substituent groups R ' are arranged on a benzene ring, each R ' can be the same or different, and the options of each R ' are not influenced mutually; the formula Q-2 represents that each benzene ring of biphenyl has Q substituent groups R ', the number Q of the substituent groups R' on the two benzene rings can be the same or different, each R 'can be the same or different, and the options of each R' are not influenced with each other.

In the present application, the term "substituted or unsubstituted" means either no substituent or substituted with one or more substituents. Such substituents include, but are not limited to, deuterium, halogen (F, Cl, Br), cyano, alkyl, alkenyl, alkynyl, haloalkyl, aryl, heteroaryl, aryloxy, arylthio, silyl, alkylamino, cycloalkyl, heterocyclyl.

In the present application, "alkyl" may include straight chain alkyl or branched alkyl. Alkyl groups may have 1 to 10 carbon atoms, and numerical ranges such as "1 to 20" refer herein to each integer in the given range; for example, "1 to 10 carbon atoms" refers to an alkyl group that may contain 1 carbon atom, 2 carbon atoms, 3 carbon atoms, 4 carbon atoms, 5 carbon atoms, 6 carbon atoms, 7 carbon atoms, 8 carbon atoms, 9 carbon atoms, or 10 carbon atoms. The alkyl group may also be a lower alkyl group having 1 to 6 carbon atoms. In still other embodiments, the alkyl group contains 1 to 4 carbon atoms; in still other embodiments, the alkyl group containsHaving 1 to 3 carbon atoms. The alkyl group may be optionally substituted with one or more substituents described herein. Examples of alkyl groups include, but are not limited to, methyl (Me, -CH)₃) Ethyl group (Et, -CH)₂CH₃) N-propyl (n-Pr, -CH)₂CH₂CH₃) Isopropyl group (i-Pr, -CH (CH)₃)₂) N-butyl (n-Bu, -CH)₂CH₂CH₂CH₃) Isobutyl (i-Bu, -CH)₂CH(CH₃)₂) Sec-butyl (s-Bu, -CH (CH)₃)CH₂CH₃) Tert-butyl (t-Bu, -C (CH)₃)₃) And the like. Further, the alkyl group may be substituted or unsubstituted.

In this application, Ar₁、Ar₂、Ar₃、Ar₄And the number of carbon atoms of R' means all the number of carbon atoms. For example, if Ar₁、Ar₂、Ar₃、Ar₄And R' is selected from substituted aryl with 18 carbon atoms, all the carbon atoms of the aryl and the substituent on the aryl are 18.

In the present application, when a specific definition is not otherwise provided, "hetero" means that at least 1 hetero atom of B, O, N, P, Si, Se, or S, etc. is included in one functional group and the remaining atoms are carbon and hydrogen.

In the present application, aryl refers to an optional functional group or substituent derived from an aromatic hydrocarbon ring. The aryl group may be a monocyclic aryl group or a polycyclic aryl group, in other words, the aryl group may be a monocyclic aryl group, a fused ring aryl group, two or more monocyclic aryl groups connected by carbon-carbon bond conjugation, a monocyclic aryl group and a fused ring aryl group connected by carbon-carbon bond conjugation, two or more fused ring aryl groups connected by carbon-carbon bond conjugation. That is, two or more aromatic groups conjugated through a carbon-carbon bond may also be considered as an aryl group in the present application. Wherein the aryl group does not contain heteroatoms such as B, O, N, P, Si, Se, S, etc. For example, biphenyl, terphenyl, and the like are aryl groups in this application. Examples of the aryl group may include phenyl, naphthyl, fluorenyl, anthracyl, phenanthryl, biphenyl, terphenyl, quaterphenyl, pentabiphenyl, hexabiphenyl, benzeneAnd [9,10 ]]Phenanthryl, pyrenyl, benzofluoranthenyl, phenanthrenyl, pyrenyl, phenanthrenyl, pyrenyl,a phenyl group, a fluorenyl group, and the like, without being limited thereto.

In this application, substituted aryl refers to an aryl group in which one or more hydrogen atoms are replaced with another group. For example, at least one hydrogen atom is substituted with deuterium atoms, F, Cl, Br, I, CN, hydroxyl, amino, branched alkyl, linear alkyl, cycloalkyl, alkoxy, alkylamino, or other groups. It is understood that a substituted aryl group having 18 carbon atoms refers to an aryl group and the total number of carbon atoms in the substituents on the aryl group being 18. For example, the number of carbon atoms of the 9, 9-dimethylfluorenyl group is 15.

In the present application, the aryl group as a substituent is exemplified by, but not limited to, phenyl, biphenyl, naphthyl, 9-dimethylfluorenyl, 9-diphenylfluorenyl, spirobifluorenyl, anthracenyl, phenanthrenyl, and,And (4) a base.

In the present application, unsubstituted aryl refers to aryl groups having 6 to 30 carbon atoms, for example: phenyl, naphthyl, pyrenyl, dimethylfluorenyl, 9 diphenylfluorenyl, spirobifluorenyl, anthracenyl, phenanthrenyl, pyrenyl, and the like,Mesityl, azunyl, acenaphthenyl, biphenyl, benzanthryl, spirobifluorenyl, perylenyl, indenyl, and the like. The substituted aryl group having 6 to 30 carbon atoms means that at least one hydrogen atom is substituted with deuterium atom, F, Cl, I, CN, hydroxyl group, nitro group, amino group, or the like.

In the present application, the heteroaryl group may be a heteroaryl group including at least one of B, O, N, P, Si, Se, and S as a heteroatom. The heteroaryl group may be a monocyclic heteroaryl group or a polycyclic heteroaryl group, in other words, the heteroaryl group may be a single aromatic ring system or a plurality of aromatic ring systems connected by carbon-carbon bonds in a conjugated manner, and any one of the aromatic ring systems is an aromatic monocyclic ring or an aromatic fused ring. Exemplary heteroaryl groups can include thienyl, furyl, pyrrolyl, imidazolyl, thiazolyl, oxazolyl, oxadiazolyl, triazolyl, pyridyl, bipyridyl, pyrimidinyl, triazinyl, acridinyl, pyridazinyl, pyrazinyl, quinolyl, quinazolinyl, quinoxalinyl, phenoxazinyl, phthalazinyl, pyridopyrimidinyl, pyridopyrazinyl, pyrazinopyrazinyl, isoquinolyl, indolyl, carbazolyl, N-arylcarbazolyl, N-heteroarylcarbazolyl, N-alkylcarbazolyl, benzoxazolyl, benzimidazolyl, benzothiazolyl, benzocarbazolyl, benzothienyl, dibenzothienyl, thienothienyl, benzofuryl, phenanthrolinyl, isoxazolyl, thiadiazolyl, benzothiazolyl, phenothiazinyl, dibenzosilyl, dibenzofuryl, phenyl-substituted dibenzofuryl, Dibenzofuranyl-substituted phenyl groups, and the like, without being limited thereto. Wherein, thienyl, furyl, phenanthroline and the like are heteroaryl of a single aromatic ring system, and N-aryl carbazolyl, N-heteroaryl carbazolyl, phenyl-substituted dibenzofuryl and the like are heteroaryl of a plurality of aromatic ring systems connected by carbon-carbon bond conjugation.

In the present application, heteroaryl as a substituent is exemplified by, but not limited to, pyridyl, pyrimidinyl, carbazolyl, dibenzofuranyl, dibenzothiophenyl.

The "ring" in the present application includes saturated rings, unsaturated rings; saturated rings, i.e., cycloalkyl, heterocycloalkyl, unsaturated rings, i.e., cycloalkenyl, heterocycloalkenyl, aryl, and heteroaryl.

In the context of the present application, it is,as used herein, the term "substituent" refers to a position bonded to another substituent or a bonding position.

An delocalized bond in the present application refers to a single bond extending from a ring systemIt means that one end of the bond may be attached to any position in the ring system through which the bond extends, the other end being attached to the ring systemThe terminal linker connects the rest of the compound molecule. For example, as shown in the following formula (f), naphthyl represented by the formula (f) is connected to other positions of the molecule through two non-positioned connecting bonds penetrating through a double ring, and the meaning of the naphthyl represented by the formula (f-1) includes any possible connecting mode shown by the formula (f-10).

For example, as shown in the following formula (X '), the phenanthryl group represented by the formula (X') is bonded to the rest of the molecule via an delocalized bond extending from the middle of the benzene ring on one side, and the meaning of the phenanthryl group includes any of the possible bonding modes as shown in the formulas (X '-1) to (X' -4).

An delocalized substituent, as used herein, refers to a substituent attached by a single bond extending from the center of the ring system, meaning that the substituent may be attached at any possible position in the ring system. For example, in the following formula (Y), the substituent R group represented by the formula (Y) is bonded to the quinoline ring via an delocalized bond, and the meaning thereof includes any of the possible bonding modes shown by the formulas (Y-1) to (Y-7).

In the present application, the halogen may be, for example, fluorine, chlorine, bromine, iodine.

In one embodiment of the present application, the organic compound has a structure represented by the following formula (1):

wherein the content of the first and second substances,

X₁、X₂、X₃and Y are the same or different and are each independently selected from C (R') or N, wherein X is₁、X₂、X₃And R' in Y is the same or different and is independently selected from hydrogen, C1-10 alkyl, C6-18 aryl, C3-18 heteroaryl, C3-10 cycloalkyl;

said X₁、X₂、X₃And at least one of Y is N;

Ar₁、Ar₂、Ar₃and Ar₄The same or different, and each is independently selected from substituted or unsubstituted aryl with 6-30 carbon atoms, and substituted or unsubstituted heteroaryl with 6-30 carbon atoms;

ar is₁、Ar₂、Ar₃、Ar₄The substituents are the same or different and are respectively and independently selected from deuterium, cyano, halogen, straight-chain alkyl with 1-3 carbon atoms, branched-chain alkyl with 3-7 carbon atoms, aryl with 6-18 carbon atoms, heteroaryl with 3-18 carbon atoms, cycloalkyl with 3-10 carbon atoms, heterocycloalkyl with 2-7 carbon atoms, alkoxy with 1-7 carbon atoms, alkylthio with 1-7 carbon atoms, dialkylamino with 2-8 carbon atoms and diarylamino with 12-18 carbon atoms.

In one embodiment of the present application, Ar is₁、Ar₂、Ar₃、Ar₄The substituents are the same or different and are independently selected from deuterium, cyano, fluorine, straight-chain alkyl group having 1 to 3 carbon atoms, branched-chain alkyl group having 3 to 5 carbon atoms, and aryl group having 6 to 18 carbon atoms.

In one embodiment of the present application, Ar is₁、Ar₂、Ar₃And Ar₄The same or different, and each is independently selected from substituted or unsubstituted aryl groups having 6 to 25 carbon atoms.

In one embodiment of the present application, Ar is₁、Ar₂、Ar₃、Ar₄The substituents on the above groups are the same or different and each independentlySelected from deuterium, cyano, fluoro, methyl, ethyl, isopropyl, tert-butyl, phenyl, naphthyl, phenanthryl, biphenyl.

In one embodiment of the present application, Ar is₁、Ar₂、Ar₃And Ar₄The same or different, and each is independently selected from the group consisting of:

wherein the content of the first and second substances,represents a chemical bond;

n₁、n₄、n₇are the same or different and are each independently selected from 0, 1,2, 3,4, 5;

n₅、n₆、n₈、n₉are the same or different and are each independently selected from 0, 1,2, 3, 4;

n₂selected from 0, 1,2, 3,4, 5, 6, 7;

n₃、n₁₀identical or different and selected from 0, 1,2, 3,4, 5, 6, 7, 8, 9;

z is selected from O, S, Si (E)₁₁E₁₂)、C(E₁₃E₁₄)、N(E₁₅)、Se；

E₁To E₁₅The same or different, and are respectively and independently selected from hydrogen, deuterium, halogen, cyano, alkyl with 1-10 carbon atoms, aryl with 6-18 carbon atoms, heteroaryl with 3-18 carbon atoms and cycloalkyl with 3-10 carbon atoms; or E₁₁And E₁₂Can be joined to form a ring, or E₁₃And E₁₄Can be connected to form a ring.

In this application, when n₁When greater than or equal to 2, E₁The same or different; when n is₂When greater than or equal to 2, E₂The same or different; when n is₃When greater than or equal to 2, E₃The same or different; when n is₄When greater than or equal to 2, E₄The same or different; when n is₅When greater than or equal to 2, E₅The same or different; when n is₆When greater than or equal to 2, E₆The same or different; when n is₇When greater than or equal to 2, E₇The same or different; when n is₈When greater than or equal to 2, E₈The same or different; when n is₉When greater than or equal to 2, E₉The same or different; when n is₁₀When greater than or equal to 2, E₁₀The same or different.

In the present application, n₁To n₁₀When selected from 0, the benzene ring is unsubstituted.

In the present application, the meaning of "A and B can be linked to form a ring" includes that A and B are independent of each other, and are not linked; also includes the connection of A and B in a ring. E.g. E₁₁And E₁₂Can be connected to form a ring, including E₁₁And E₁₂Independent of each other, not connected, also comprising E₁₁And E₁₂Are connected with each other to form a ring; e₁₃And E₁₄Can be connected to form a ring, including E₁₃And E₁₄Independent of each other, not connected, also comprising E₁₃And E₁₄Are connected with each other to form a ring.

In this application, the ring refers to a saturated or unsaturated 5-13 membered ring when E is₁₁And E₁₂When the ring is formed, the number of carbon atoms of the ring may be 5-membered, for exampleOr may be a 6-membered ring, e.g.And may also be a 13-membered ring, e.g.And the like, but are not limited thereto.

In one embodiment of the present application, Ar is₁、Ar₂、Ar₃And Ar₄Are the same or different and are each independently selected from the group consisting of:

in one embodiment of the present application, Ar is₁、Ar₂、Ar₃And Ar₄Are the same or different and are each independently selected from hydrogen or the following groups:

in one embodiment of the present application, Ar is₁、Ar₂、Ar₃And Ar₄Are the same or different and are each independently selected from hydrogen or the following groups:

in one embodiment of the present application, Ar is₁、Ar₂、Ar₃And Ar₄The same or different, and each is independently selected from substituted or unsubstituted phenyl, substituted or unsubstituted biphenyl, substituted or unsubstituted naphthyl, substituted or unsubstituted fluorenyl, substituted or unsubstituted phenanthryl, substituted or unsubstituted terphenyl, substituted or unsubstituted pyridyl, substituted or unsubstituted pyrimidyl, and substituted or unsubstituted anthracyl.

In one embodiment of the present application, Ar is₁、Ar₂、Ar₃And Ar₄Are the same or different and are each independently selected from hydrogen or the following groups:

in one embodiment of the present application, each R' is selected from the group consisting of hydrogen, aryl groups having 6 to 12 carbon atoms.

In one embodiment of the present application, each R' is selected from hydrogen, phenyl, biphenyl, naphthyl.

In the present application, X₁、X₂、X₃Each independently selected from C (R ') or N, and each R' is the same or different and each independently selected from hydrogen, phenyl, biphenyl, naphthyl.

In one embodiment of the present application, the organic compound is selected from one or more of the following organic compounds P1-P180:

in a second aspect, the present application provides a use of the organic compound provided in the first aspect of the present application in an organic electroluminescent device.

According to the application, the organic compound has good electron transport performance, and the electron transport layer material prepared from the organic compound has higher stability and excellent electron transport capacity, so that the service life of the organic electroluminescent device can be effectively prolonged, and the luminous efficiency of the organic electroluminescent device can be improved.

In one embodiment, the organic compound can be used as an electron transport layer material of an organic electroluminescent device.

A third aspect of the present application provides an organic electroluminescent device comprising a substrate, an anode layer, a cathode layer, and at least one organic layer interposed between the anode layer and the cathode layer, the organic layer comprising a hole injection layer, a hole transport layer, an organic electroluminescent layer, an electron transport layer and an electron injection layer, the electron transport layer comprising an organic compound as provided in the first aspect of the present application, optionally at least one of the organic compounds P1-P180.

For example, as shown in fig. 1, the organic electroluminescent device includes an anode 100 and a cathode 200 oppositely disposed, and a functional layer 300 disposed between the anode 100 and the cathode 200; the functional layer 300 comprises an organic compound as provided herein.

The organic compound represented by chemical formula (1) is useful as a material for TV, N-type CGL (charge generation layer) in an organic light emitting device.

Alternatively, the organic compound provided herein may be used to form at least one organic film layer in the functional layer 300 to improve the lifetime characteristics, efficiency characteristics, and reduce the driving voltage of the organic electroluminescent device; in some embodiments, the mass production stability of the organic electroluminescent device can also be improved.

Alternatively, the functional layer 300 comprises an electron transport layer 360, the electron transport layer 360 comprising an organic compound as provided herein. The electron transport layer 360 may be made of an organic compound provided herein, or may be made of an organic compound provided herein and other materials.

In one embodiment of the present application, as shown in fig. 1, the organic electroluminescent device may include an anode 100, a hole injection layer 310, a hole transport layer 320, an electron blocking layer 330, an organic electroluminescent layer 340, a hole blocking layer 350, an electron transport layer 360, an electron injection layer 370, and a cathode 200, which are sequentially stacked. The organic compound provided by the application can be applied to an electron transport layer 360 and a hole blocking layer 350 of an organic electroluminescent device, and can effectively improve the electron transport property of the organic electroluminescent device. Here, the hole characteristics mean that holes formed in the anode 100 are easily injected into the organic electroluminescent layer 340 and are transported in the organic electroluminescent layer 340 according to conduction characteristics of the HOMO level.

Optionally, the anode 100 comprises an anode material, preferably a material with a large work function that facilitates hole injection into the functional layer. Specific examples of the anode material include: metals such as nickel, platinum, vanadium, chromium, copper, zinc and gold or alloys thereof; metal oxides such as zinc oxide, Indium Tin Oxide (ITO), and Indium Zinc Oxide (IZO); combined metals and oxides, e.g. ZnO: Al or SnO₂Sb; or a conductive polymer such as poly (3-methylthiophene), poly [3,4- (ethylene-1, 2-dioxy) thiophene](PEDT), polypyrrole, and polyaniline, but are not limited thereto. Preferably, a transparent electrode including Indium Tin Oxide (ITO) as an anode is included.

Alternatively, the organic electroluminescent layer 340 may be composed of a single light emitting material, and may include a host material and a guest material. Alternatively, the organic electroluminescent layer 340 may be composed of a host material and a guest material, and a hole injected into the organic electroluminescent layer 340 and an electron injected into the organic electroluminescent layer 340 may be combined in the organic electroluminescent layer 340 to form an exciton, where the exciton transfers energy to the host material and the host material transfers energy to the guest material, so that the guest material can emit light.

The host material of the organic electroluminescent layer 340 may be a metal chelate compound, a bisstyryl derivative, an aromatic amine derivative, a dibenzofuran derivative, or other types of materials, which is not particularly limited in this application. In one embodiment of the present application, the host material of the organic electroluminescent layer 340 may be CBP. In another embodiment of the present application, the host material of the organic electroluminescent layer 340 may be α, β -ADN.

The guest material of the organic electroluminescent layer 340 may be a compound having a condensed aryl ring or a derivative thereof, a compound having a heteroaryl ring or a derivative thereof, an aromatic amine derivative, or other materials, which is not particularly limited in this application. In one embodiment of the present application, the guest material of the organic electroluminescent layer 340 may be Ir (piq)₂(acac). In another embodiment of the present application, the guest material of the organic electroluminescent layer 340 may be BD-1.

The electron transport layer 360 may have a single-layer structure or a multi-layer structure, and may include one or more electron transport materials, and the electron transport materials may be selected from benzimidazole derivatives, oxadiazole derivatives, quinoxaline derivatives, or other electron transport materials, which is not particularly limited in this application. For example, in one embodiment of the present application, the electron transport layer 360 may be composed of DBimiBphen and LiQ.

Optionally, the cathode 200 comprises a cathode material, which is a material with a small work function that facilitates electron injection into the functional layer. Specific examples of the cathode material include: metals such as magnesium, calcium, sodium, potassium, titanium, indium, yttrium, lithium, gadolinium, aluminum, silver, tin, and lead or alloys thereof; or a multilayer material such as LiF/Al, Liq/Al, LiO₂Al, LiF/Ca, LiF/Al and BaF₂But not limited thereto,/Ca. Preferably, a metal electrode comprising aluminum is included as a cathode.

Optionally, as shown in fig. 1, a hole injection layer 310 may be further disposed between the anode 100 and the hole transport layer 320 to enhance the ability to inject holes into the hole transport layer 320. The hole injection layer 310 may be made of benzidine derivatives, starburst arylamine compounds, phthalocyanine derivatives, or other materials, which are not limited in this application. In one embodiment of the present application, the hole injection layer 310 may be composed of m-MTDATA.

Optionally, as shown in fig. 1, an electron injection layer 370 may be further disposed between the cathode 200 and the electron transport layer 360 to enhance the ability to inject electrons into the electron transport layer 360. The electron injection layer 370 may include an inorganic material such as an alkali metal sulfide or an alkali metal halide, or may include a complex of an alkali metal and an organic material. In one embodiment of the present application, the electron injection layer 370 may include LiQ.

Based on the excellent characteristics of the organic compound, the organic electroluminescent device has high luminous efficiency, long service life and excellent color purity.

The present application is further illustrated by the following examples, but the present application is not limited thereto.

The organic compounds of the synthetic methods not mentioned in this application are all starting products obtained commercially.

The analytical detection of intermediates and organic compounds in this application uses an ICP-7700 mass spectrometer and an M5000 element analyzer.

The following will specifically describe the method for synthesizing the organic compound of the present application with reference to synthesis examples 1 to 17.

Synthesis example 1 preparation of Compound P13

(1) 150mL of ethanol was added to a three-neck reaction flask equipped with a mechanical stirrer, a thermometer, and a constant pressure dropping funnel, starting to stir and add the starting materials 13a (471mmol, 50.00g) and sodium hydroxide (707mmol, 28.30g), controlling the system temperature at 20 ℃, and after the addition, the system appeared to be a colorless solution. Dissolving the raw material 13b (471mmol, 94.35g) in 100mL ethanol, slowly dripping into the reaction solution, controlling the temperature in the dripping process at 20 ℃, slightly releasing heat of the system, keeping the temperature at 20 ℃ after finishing dripping, and completely reacting for 3 h. The reaction solution is added into 250mL of water under stirring, the mixture is filtered after being stirred for 10min, and a filter cake is pulped to be neutral in 250mL of water each time. And (3) drying the filter cake under reduced pressure (-0.06-0.085 MPa at 50-60 ℃) to constant weight to obtain 115.40g of the intermediate 13 c.

(2) To a three-necked reaction flask equipped with a mechanical stirrer, a thermometer and a reflux condenser, 200mL of dioxane and 100mL of water were sequentially added under nitrogen protection, and cesium carbonate (414mmol, 134.89g), raw material 13d (276mmol, 50.00g) and raw material 13e (276mmol, 33.64g) were added with stirring. Heating to 55 ℃, adding tetrakis (triphenylphosphine) palladium (2.76mmol, 3.19g), heating to 70-80 ℃, carrying out reflux reaction for 14h, detecting the reaction until the reaction is complete, and stopping the reaction. Cooling to 25 ℃, adding 130mL of water and 300mL of toluene, stirring and separating liquid, extracting the water phase once by using 130mL of toluene, separating liquid, combining organic phases, washing the organic phases to be neutral, adding 7g of anhydrous sodium sulfate into the organic phases, stirring and drying, filtering, concentrating the organic phases (0.075MPa, 55 ℃) until no solvent is produced to obtain a crude product, adding 200mL of petroleum ether, stirring at 25 ℃ to separate out a large amount of solid, and filtering. The filter cake is rinsed with ethanol. 50.10g of intermediate 13f are obtained.

(3) A three-neck reaction flask equipped with a mechanical stirrer, a thermometer and a reflux condenser is charged with intermediate 13c (193mmol, 55.67g), intermediate 13f (193mmol, 50.10g), 200mL dioxane and sodium hydroxide (290mmol, 11.60g) in sequence under nitrogen protection, and the reaction is maintained at 25 ℃ for 3h, and the reaction is detected until the reaction is complete, and then the reaction is stopped. Cooling to 25-30 ℃, adding 130mL of water and 300mL of toluene, stirring for separating liquid, extracting a water phase once by using 130mL of toluene, separating liquid, combining organic phases, washing with water to be neutral, adding 7g of anhydrous sodium sulfate into the organic phase, stirring and drying, filtering, concentrating the organic phase (minus 0.06-0.075 MPa, 55-60 ℃) until no solvent is produced to obtain a crude product, adding 200mL of ethanol, stirring at 25 ℃ to separate out a large amount of solid, and filtering. The filter cake is rinsed with ethanol. 52.32g of intermediate 13g are obtained.

(4) And (2) sequentially adding 13g (148.56mmol, 52.32g) of intermediate and 250mL of THF (tetrahydrofuran) into a three-mouth reaction bottle provided with a mechanical stirring device, a low-temperature pot, a thermometer and a constant-pressure dropping funnel under the protection of nitrogen, stirring until the intermediate is completely dissolved, cooling to-70-80 ℃, starting to drop 163mmol of n-butyl lithium, controlling the temperature to-70-80 ℃, keeping the temperature for 1h after dropping, continuing to drop 163mmol of tributyl borate, controlling the temperature to-70-80 ℃, keeping the temperature for reaction for 2h, detecting the reaction until the reaction is complete, and stopping the reaction. Heating to 25 ℃, adding the mixture into 2L of 1mol/L dilute hydrochloric acid solution, stirring for 4h at 25 ℃, and filtering. The filter cake is rinsed with petroleum ether. 42g of intermediate 13h are obtained.

(5) Adding 72mL of toluene, 54mL of ethanol and 20mL of water into a three-neck flask provided with a mechanical stirrer, a thermometer and a Y-shaped tube under the protection of nitrogen, starting stirring, adding 13h (30mmol, 10.56g) of an intermediate, 13i (15mmol, 3.55g) of a raw material, 30mmol, 4.15g of potassium carbonate and 1.5mmol, 0.48g of tetrabutylammonium bromide, heating to 45-50 ℃, quickly adding 0.075mmol, 0.017g of palladium acetate, and continuously heating to 65-70 ℃ for reaction for 8h under the condition of heat preservation. And cooling the reaction liquid to 15-20 ℃, filtering, draining, leaching a filter cake with ethanol, and draining. Hot-dissolving the filter cake with toluene, passing through a heat-insulating column, cooling the column-passing liquid to 15-20 ℃, filtering, draining, and recrystallizing the filter cake with toluene to LC>99.9% to obtain compound P13(5.72g, yield 55%). 691.98[ M + H ] M/z]⁺。

Nuclear magnetic resonance hydrogen spectrum of compound P13:¹H-NMR(400MHz,CDCl₃),δ(ppm):9.70(2H,s),9.23-9.01(5H,m),8.31-8.28(6H,m),7.81-7.49(18H,m),7.10-7.05(2H,d).

synthesis example 2 preparation of Compound P16

To a three-necked flask equipped with a mechanical stirrer, a thermometer and a Y-type tube, 78mL of toluene, 58mL of ethanol and 23mL of water were added under nitrogen protection, and stirring was turned on, and the starting material 16a (15mmol, 3.57g), the intermediate 13h (30mmol, 10.57g) and potassium carbonate were added

(30mmol, 4.15g) and tetrabutylammonium bromide (1.5mmol, 0.48g), heating to 45-50 ℃, rapidly adding palladium acetate (0.075mmol, 0.017g), continuously heating to 65-70 ℃, and carrying out heat preservation reaction for 8 hours. And cooling the reaction liquid to 15-20 ℃, filtering, draining, leaching a filter cake with ethanol, and draining. Hot-dissolving the filter cake with toluene, passing through a heat-insulating column, cooling the column-passing liquid to 15-20 ℃, filtering, draining, and recrystallizing the filter cake with toluene to LC>99.9% to give compound P16(5.52g, yield 53%). 692.97[ M + H ] M/z]⁺。

Nuclear magnetic resonance hydrogen spectrum of compound P16:¹H-NMR(400MHz,CDCl₃),δ(ppm):9.32-8.95(4H,m),8.75-8.68(4H,m),8.31-8.28(6H,m),7.81-7.71(6H,m),7.52-7.41(12H,m).

synthesis example 3 preparation of Compound P9

Adding 78mL of toluene, 58mL of ethanol and 23mL of water into a three-neck flask provided with a mechanical stirrer, a thermometer and a Y-shaped tube under the protection of nitrogen, starting stirring, adding raw material 9a (15mmol, 4.71g), intermediate 13h (30mmol, 10.57g), potassium carbonate (30mmol, 4.15g) and tetrabutylammonium bromide (1.5mmol, 0.48g), heating to 45-50 ℃, rapidly adding palladium acetate (0.075mmol, 0.017g), continuously heating to 65-70 ℃, and carrying out heat preservation reaction for 8 hours. And cooling the reaction liquid to 15-20 ℃, filtering, draining, leaching a filter cake with ethanol, and draining. Hot-dissolving the filter cake with toluene, passing through a heat-insulating column, cooling the column-passing liquid to 15-20 ℃, filtering, draining, and recrystallizing the filter cake with toluene to LC>99.9% to obtain compound P9(6.69g, yield 58%). 768.95[ M + H ] M/z]⁺。

Synthesis example 4 preparation of Compound P12

Adding 78mL of toluene, 58mL of ethanol and 23mL of water into a three-neck flask provided with a mechanical stirrer, a thermometer and a Y-shaped tube under the protection of nitrogen, starting stirring, adding 12a (15mmol, 3.39g) of raw material, 13h (30mmol, 10.57g) of intermediate, 30mmol, 4.15g of potassium carbonate and 1.5mmol, 0.48g of tetrabutylammonium bromide, heating to 45-50 ℃, rapidly adding 0.075mmol, 0.017g of palladium acetate, and continuously heating to 65-70 ℃ for reaction for 8 hours under the condition of heat preservation. And cooling the reaction liquid to 15-20 ℃, filtering, draining, leaching a filter cake with ethanol, and draining. Hot-dissolving the filter cake with toluene, passing through a heat-insulating column, cooling the column-passing liquid to 15-20 ℃, filtering, draining, and recrystallizing the filter cake with toluene to LC>99.9% to give compound P12(6.7g, 58% yield). 769.90[ M + H ] M/z]⁺。

Synthesis example 5 preparation of Compound P3

(1) To a three-necked reaction flask equipped with a mechanical stirrer, a thermometer and a reflux condenser, 200mL of dioxane and 100mL of water were sequentially added under nitrogen protection, and cesium carbonate (414mmol, 134.89g), raw material 13d (276mmol, 50.00g) and raw material 3a (276mmol, 68.47g) were added with stirring. Heating to 55 ℃, adding tetrakis (triphenylphosphine) palladium (2.76mmol, 3.19g), heating to 75 ℃, refluxing for 14h, detecting the reaction until the reaction is complete, and stopping the reaction. Cooling to 25 ℃, adding 130mL of water and 300mL of toluene, stirring and separating liquid, extracting the water phase once by using 130mL of toluene, separating liquid, combining organic phases, washing the organic phases to be neutral, adding 7g of anhydrous sodium sulfate into the organic phases, stirring and drying, filtering, concentrating the organic phases (0.075MPa, 55 ℃) until no solvent is produced to obtain a crude product, adding 200mL of petroleum ether, stirring at 25 ℃ to separate out a large amount of solid, and filtering. The filter cake is rinsed with ethanol. 68.2g of intermediate 3b are obtained.

(2) A three-neck reaction flask equipped with a mechanical stirrer, a thermometer and a reflux condenser is charged with intermediate 13c (193mmol, 55.67g), intermediate 3b (193mmol, 74.40g), 200mL dioxane and sodium hydroxide (290mmol, 11.60g) in sequence under nitrogen protection, and the reaction is maintained at 25 ℃ for 3h, and the reaction is detected until the reaction is complete, and then stopped. Cooling to 25-30 ℃, adding 130mL of water and 300mL of toluene, stirring for separating liquid, extracting a water phase once by using 130mL of toluene, separating liquid, combining organic phases, washing with water to be neutral, adding 7g of anhydrous sodium sulfate into the organic phase, stirring and drying, filtering, concentrating the organic phase (minus 0.06-0.075 MPa, 55-60 ℃) until no solvent is produced to obtain a crude product, adding 200mL of ethanol, stirring at 25 ℃ to separate out a large amount of solid, and filtering. The filter cake is rinsed with ethanol. 76.28g of intermediate 3c are obtained.

(3) Sequentially adding the intermediate 3c (148.56mmol, 76.28g) and 350ml of THF (hydrogen fluoride) into a three-mouth reaction bottle provided with a mechanical stirring device, a low-temperature pot, a thermometer and a constant-pressure dropping funnel under the protection of nitrogen, stirring until the intermediate is completely dissolved, cooling to-70-80 ℃, starting to drop 163mmol of n-butyl lithium, controlling the temperature to-70-80 ℃, keeping the temperature for 1h after dropping, continuing to drop 163mmol of tributyl borate, controlling the temperature to-70-80 ℃, keeping the temperature for reaction for 2h, detecting the reaction until the reaction is complete, and stopping the reaction. Heating to 20-30 ℃, adding into 2L of 1mol/L dilute hydrochloric acid solution, stirring for 4h at 20-30 ℃, and filtering. The filter cake is rinsed with petroleum ether. 68g of intermediate 3d are obtained.

(4) To a three-necked reaction flask equipped with a mechanical stirrer, a thermometer and a reflux condenser, 200mL of toluene and 100mL of water were sequentially added under nitrogen protection, and potassium carbonate (414mmol, 56.72g), the starting material 3e (276mmol, 100.13g) and the starting material 13e (276mmol, 33.65g) were added with stirring. Heating to 55 ℃, adding tetrakis (triphenylphosphine) palladium (2.76mmol, 3.19g), heating to 70-80 ℃, carrying out reflux reaction for 4h, detecting the reaction until the reaction is complete, and stopping the reaction. Cooling to 25 ℃, adding 130mL of water and 300mL of toluene, stirring and separating liquid, extracting the water phase once by using 130mL of toluene, separating liquid, combining organic phases, washing the organic phases to be neutral, adding 7g of anhydrous sodium sulfate into the organic phases, stirring and drying, filtering, concentrating the organic phases (0.075MPa, 55 ℃) until no solvent is produced to obtain a crude product, adding 200mL of petroleum ether, stirring at 25 ℃ to separate out a large amount of solid, and filtering. The filter cake is rinsed with ethanol. 105.10g of intermediate 3g are obtained.

(5) Adding 72mL of toluene, 54mL of ethanol and 20mL of water into a three-neck flask provided with a mechanical stirrer, a thermometer and a Y-shaped tube under the protection of nitrogen, starting stirring, adding 3g (15mmol, 4.69g) of an intermediate, 3d (15mmol, 7.18g) of an intermediate, 30mmol, 4.15g of potassium carbonate and 1.5mmol, 0.48g of tetrabutylammonium bromide, heating to 45-50 ℃, quickly adding 0.075mmol, 0.017g of palladium acetate, and continuously heating to 65-70 ℃ for reaction for 8 hours under the condition of heat preservation. And cooling the reaction liquid to 15-20 ℃, filtering, draining, leaching a filter cake with ethanol, and draining.

10g of intermediate 3h are obtained.

(6) Adding 72mL of toluene, 54mL of ethanol and 20mL of water into a three-neck flask provided with a mechanical stirrer, a thermometer and a Y-shaped tube under the protection of nitrogen, starting stirring, adding 13h (15mmol, 5.28g) of an intermediate, 3i (15mmol, 10g) of an intermediate, 30mmol, 4.15g of potassium carbonate and 1.5mmol, 0.48g of tetrabutylammonium bromide, heating to 45-50 ℃, quickly adding 0.075mmol, 0.017g of palladium acetate, and continuously heating to 65-70 ℃ for reaction for 8h under the condition of heat preservation. And cooling the reaction liquid to 15-20 ℃, filtering, draining, leaching a filter cake with ethanol, and draining. Hot-dissolving the filter cake with toluene, passing through a heat-insulating column, cooling the column-passing liquid to 15-20 ℃, filtering, draining, and recrystallizing the filter cake with toluene to LC>99.9% to give compound P3(7.38g, yield 55%). 893.95[ M + H ] M/z]⁺。

Synthesis example 6 preparation of Compound P11

(1) Adding 72mL of toluene, 54mL of ethanol and 20mL of water into a three-neck flask provided with a mechanical stirrer, a thermometer and a Y-shaped tube under the protection of nitrogen, starting stirring, adding 13h (15mmol, 5.28g) of an intermediate, 11a (15mmol, 2.75g) of a raw material, 30mmol, 4.15g of potassium carbonate and 1.5mmol, 0.48g of tetrabutylammonium bromide, heating to 45-50 ℃, quickly adding palladium acetate (0.075mmol, 0.017g), continuously heating to 65-70 ℃, and carrying out heat preservation reaction for 8 h. And cooling the reaction liquid to 15-20 ℃, filtering, draining, leaching a filter cake with ethanol, and draining.

5.4g of intermediate 11b are obtained.

(2) A three-neck flask provided with a mechanical stirrer, a thermometer and a Y-shaped tube is added with 72mL of toluene, 54mL of ethanol and 20mL of water under the protection of nitrogen, stirring is started, intermediate 11b (7.43mmol, 5.4g), raw material 13e (7.43mmol, 0.91g), potassium carbonate (15mmol, 2.08g) and tetrabutylammonium bromide (1.5mmol, 0.48g) are added, the temperature is raised to 45-50 ℃, palladium acetate (0.038mmol, 0.009g) is rapidly added, the temperature is raised to 65-70 ℃, and heat preservation reaction is carried out for 8 hours. And cooling the reaction liquid to 15-20 ℃, filtering, draining, leaching a filter cake with ethanol, and draining. Hot-dissolving the filter cake with toluene, passing through a heat-insulating column, cooling the column-passing liquid to 15-20 ℃, filtering, draining, and recrystallizing the filter cake with toluene to LC>99.9% to obtain compound P11(3.54g, yield 62%). 768.95[ M + H ] M/z]⁺。

Synthesis example 7 preparation of Compound P15

Adding 72mL of toluene, 54mL of ethanol and 20mL of water into a three-neck flask provided with a mechanical stirrer, a thermometer and a Y-shaped tube under the protection of nitrogen, starting stirring, adding 13h (30mmol, 10.56g) of an intermediate, 15a (15mmol, 2.22g) of a raw material, 30mmol, 4.15g of potassium carbonate and 1.5mmol, 0.48g of tetrabutylammonium bromide, heating to 45-50 ℃, quickly adding palladium acetate (0.075mmol, 0.017g), continuously heating to 65-70 ℃, and carrying out heat preservation reaction for 8 h. And cooling the reaction liquid to 15-20 ℃, filtering, draining, leaching a filter cake with ethanol, and draining. Hot-dissolving the filter cake with toluene, passing through a heat-insulating column, cooling the column-passing liquid to 15-20 ℃, filtering, draining, and recrystallizing the filter cake with toluene to LC>99.9% to obtain compound P15(5.4g, yield 52%). 691.97[ M + H ] M/z]⁺。

Synthesis example 8 preparation of Compound P87

(1) 150mL of ethanol was added to a three-neck reaction flask equipped with a mechanical stirrer, a thermometer and a constant pressure dropping funnel, the raw materials 87a (471mmol, 85.83g) and sodium hydroxide (707mmol, 28.30g) were added with stirring, the temperature of the system was controlled at 20 ℃, and the system was colorless solution after the addition. Dissolving the raw material 13b (471mmol, 94.35g) in 100mL ethanol, slowly dropwise adding into the reaction solution, controlling the temperature in the dropwise adding process at 20 ℃, slightly releasing heat of the system, and reacting for 3h at 20 ℃ after the dropwise adding is finished. The reaction solution is added into 250mL of water under stirring, the mixture is filtered after being stirred for 10min, and a filter cake is pulped to be neutral in 250mL of water each time. And (3) drying the filter cake under reduced pressure (-0.06-0.085 MPa at 50-60 ℃) to constant weight to obtain 160.40g of intermediate 87 b.

(2) Adding the intermediate 87b (193mmol, 70.3g), the intermediate 13f (193mmol, 50.10g), 200mL dioxane and sodium hydroxide (290mmol, 11.60g) into a three-mouth reaction bottle with a mechanical stirring thermometer under the protection of nitrogen, keeping the temperature at 10-30 ℃ for reaction for 3h, detecting the reaction until the reaction is complete, and stopping the reaction. Cooling to 25-30 ℃, adding 130mL of water and 300mL of toluene, stirring for separating liquid, extracting a water phase once by using 130mL of toluene, separating liquid, combining organic phases, washing with water to be neutral, adding 7g of anhydrous sodium sulfate into the organic phase, stirring and drying, filtering, concentrating the organic phase (minus 0.06-0.075 MPa, 55-60 ℃) until no solvent is produced to obtain a crude product, adding 200mL of ethanol, stirring at 25 ℃ to separate out a large amount of solid, and filtering. The filter cake is rinsed with ethanol. 102.32g of intermediate 87c were obtained.

(3) Adding an intermediate 87c (148.56mmol, 68.84g) and 350ml of THF (hydrogen fluoride) into a three-mouth reaction bottle provided with a mechanical stirring device, a low-temperature pot, a thermometer and a constant-pressure dropping funnel in sequence under the protection of nitrogen, stirring until the intermediate is completely dissolved, cooling to-70-80 ℃, starting to dropwise add 163mmol of n-butyl lithium, controlling the temperature to-70-80 ℃, keeping the temperature for 1h after dropwise adding, continuing to dropwise add 163mmol of tributyl borate, controlling the temperature to-70-80 ℃, keeping the temperature for reaction for 2h, detecting the reaction until the reaction is complete, and stopping the reaction. Heating to 20-30 ℃, adding into 2L of 1mol/L dilute hydrochloric acid solution, stirring for 4h at 20-30 ℃, and filtering. The filter cake is rinsed with petroleum ether. 51g of intermediate 87d were obtained.

(4) Adding raw materials 87e (CAS:171408-76-7, 1mol, 395.3g) and 3500ml of THF (tetrahydrofuran) into a three-mouth reaction bottle provided with a mechanical stirring device, a low-temperature pot, a thermometer and a constant-pressure dropping funnel in sequence under the protection of nitrogen, stirring until the raw materials are completely dissolved, cooling to-70-80 ℃, starting to drop 1.2mol of n-butyl lithium, controlling the temperature to be-70-80 ℃, keeping the temperature for 1h after dropping, continuing to drop 1.2mol of DMF (87.71 g), controlling the temperature to be-70-80 ℃, keeping the temperature for reacting for 2h, detecting the reaction until the reaction is complete, and stopping the reaction. Heating to 20-30 deg.C, adding into 2L of 1mol/L dilute hydrochloric acid solution, extracting with 7L dichloroethane, and washing with water to neutrality. Concentrating the organic phase under reduced pressure (-0.06-0.085 MPa, 50-60 deg.C) to obtain about 400mL of solvent, adding 2L of petroleum ether, stirring at 20-30 deg.C for 4 hr, and filtering. The filter cake is rinsed with petroleum ether. 301g of intermediate 87f are obtained.

(5) 150mL of ethanol was added to a three-neck reaction flask equipped with a mechanical stirrer, a thermometer and a constant pressure dropping funnel, the raw materials 87f (471mmol, 162.22g) and sodium hydroxide (707mmol, 28.30g) were added with stirring, the temperature of the system was controlled at 20 ℃, and the system was colorless solution after the addition. Dissolving the raw material 13b (471mmol, 94.35g) in 100mL ethanol, slowly dropwise adding into the reaction solution, controlling the temperature in the dropwise adding process at 20 ℃, slightly releasing heat of the system, and reacting for 3h at 20 ℃ after the dropwise adding is finished. The reaction solution is added into 250mL of water under stirring, the mixture is filtered after being stirred for 10min, and a filter cake is pulped to be neutral in 250mL of water each time. And (3) drying the filter cake under reduced pressure (-0.06-0.085 MPa at 50-60 ℃) to constant weight to obtain 155.40g of intermediate 87 g.

(6) A three-mouth reaction bottle provided with a mechanical stirring device, a thermometer and a reflux condenser is added with 87g of intermediate (193mmol, 101.6g), 13f of intermediate (193mmol, 50.10g), 200mL of dioxane and sodium hydroxide (290mmol, 11.60g) in sequence under the protection of nitrogen, the temperature is kept at 10-30 ℃ for reaction for 3h, the reaction is detected until the reaction is complete, and the reaction is stopped. Cooling to 25-30 ℃, adding 130mL of water and 300mL of toluene, stirring for separating liquid, extracting a water phase once by using 130mL of toluene, separating liquid, combining organic phases, washing with water to be neutral, adding 7g of anhydrous sodium sulfate into the organic phase, stirring and drying, filtering, concentrating the organic phase (minus 0.06-0.075 MPa, 55-60 ℃) until no solvent is produced to obtain a crude product, adding 200mL of ethanol, stirring at 25 ℃ to separate out a large amount of solid, and filtering. The filter cake is rinsed with ethanol. 132.32g of intermediate 87h were obtained.

(7) Sequentially adding an intermediate 87h (148.56mmol, 92.93g) and 350ml of THF (hydrogen fluoride) into a three-mouth reaction bottle provided with a mechanical stirring device, a low-temperature pot, a thermometer and a constant-pressure dropping funnel under the protection of nitrogen, stirring until the intermediate is completely dissolved, cooling to-70-80 ℃, starting to drop 163mmol of n-butyl lithium, controlling the temperature to-70-80 ℃, keeping the temperature for 1h after dropping, continuing to drop 163mmol of tributyl borate, controlling the temperature to-70-80 ℃, keeping the temperature for reaction for 2h, detecting the reaction until the reaction is complete, and stopping the reaction. Heating to 20-30 ℃, adding into 2L of 1mol/L dilute hydrochloric acid solution, stirring for 4h at 20-30 ℃, and filtering. The filter cake is rinsed with petroleum ether. 81.7g of intermediate 87i are obtained.

(8) Adding 72mL of toluene and 20mL of water into a three-neck flask provided with a mechanical stirrer, a thermometer and a Y-shaped tube under the protection of nitrogen, starting stirring, adding an intermediate 87d (15mmol, 6.42g), a raw material 12a (15mmol, 3.39g) and potassium carbonate (30mmol, 4.15g), heating to 45-50 ℃, quickly adding palladium acetate (0.075mmol, 0.017g), continuously heating to 65-70 ℃, and carrying out heat preservation reaction for 8 hours. And cooling the reaction liquid to 15-20 ℃, filtering, draining, leaching a filter cake with ethanol, and draining. 8.4g of intermediate 87j are obtained.

(9) Adding 72mL of toluene, 54mL of ethanol and 20mL of water into a three-neck flask provided with a mechanical stirrer, a thermometer and a Y-shaped tube under the protection of nitrogen, starting stirring, adding an intermediate 87j (14.63mmol, 8.4g), an intermediate 87i (14.63mmol, 8.64g), potassium carbonate (30mmol, 4.15g) and tetrabutylammonium bromide (1.5mmol, 0.48g), heating to 45-50 ℃, rapidly adding palladium acetate (0.075mmol, 0.017g), continuously heating to 65-70 ℃, and carrying out heat preservation reaction for 8 hours. Cooling the reaction liquid to 15-20 ℃, filtering, draining, leaching filter cakes with ethanolAnd (5) draining. Hot-dissolving the filter cake with toluene, passing through a heat-insulating column, cooling the column-passing liquid to 15-20 ℃, filtering, draining, and recrystallizing the filter cake with toluene to LC>99.9% to obtain compound P87(8.41g, yield 53%). 1083.99[ M + H ] M/z]⁺。

Synthesis example 9 preparation of Compound P88

(1) 150mL of ethanol was added to a three-neck reaction flask equipped with a mechanical stirrer, a thermometer and a constant pressure dropping funnel, the mixture was stirred to add 88a (471mmol, 85.83g) and sodium hydroxide (707mmol, 28.30g), the temperature of the system was controlled at 20 ℃ and the system was colorless solution after the addition. Dissolving the raw material 13b (471mmol, 94.35g) in 100mL ethanol, slowly dropwise adding into the reaction solution, controlling the temperature in the dropwise adding process at 20 ℃, slightly releasing heat of the system, and reacting for 3h at 20 ℃ after the dropwise adding is finished. The reaction solution is added into 250mL of water under stirring, the mixture is filtered after being stirred for 10min, and a filter cake is pulped to be neutral in 250mL of water each time. And (3) drying the filter cake under reduced pressure (-0.06-0.085 MPa at 50-60 ℃) to constant weight to obtain 158.30g of intermediate 88 b.

(2) A three-neck reaction flask equipped with a mechanical stirrer, a thermometer and a reflux condenser is charged with intermediate 88b (193mmol, 70.3g), intermediate 13f (193mmol, 50.10g), 200mL dioxane and sodium hydroxide (290mmol, 11.60g) in sequence under nitrogen protection, and the reaction is kept at 25 ℃ for 3h, and the reaction is detected until the reaction is complete, and then the reaction is stopped. Cooling to 25-30 ℃, adding 130mL of water and 300mL of toluene, stirring for separating liquid, extracting a water phase once by using 130mL of toluene, separating liquid, combining organic phases, washing with water to be neutral, adding 7g of anhydrous sodium sulfate into the organic phase, stirring and drying, filtering, concentrating the organic phase (minus 0.06-0.075 MPa, 55-60 ℃) until no solvent is produced to obtain a crude product, adding 200mL of ethanol, stirring at 25 ℃ to separate out a large amount of solid, and filtering. The filter cake is rinsed with ethanol. 101.23g of intermediate 88c are obtained.

(3) Sequentially adding an intermediate 88c (148.56mmol, 68.84g) and 350ml of THF (hydrogen fluoride) into a three-mouth reaction bottle provided with a mechanical stirring device, a low-temperature pot, a thermometer and a constant-pressure dropping funnel under the protection of nitrogen, stirring until the intermediate is completely dissolved, cooling to-70-80 ℃, starting to dropwise add 163mmol of n-butyl lithium, controlling the temperature to be-70-80 ℃, keeping the temperature for 1h after dropwise adding, continuing to dropwise add 163mmol of tributyl borate, controlling the temperature to be-70-80 ℃, keeping the temperature for reaction for 2h, detecting the reaction until the reaction is complete, and stopping the reaction. Heating to 20-30 ℃, adding into 2L of 1mol/L dilute hydrochloric acid solution, stirring for 4h at 20-30 ℃, and filtering. The filter cake is rinsed with petroleum ether. 52.1g of intermediate 88d are obtained.

(4) Adding 88e (CAS:474918-32-6, 1mol, 397.32g) and 3500ml of THF (tetrahydrofuran) into a three-mouth reaction bottle provided with a mechanical stirring device, a low-temperature pot, a thermometer and a constant-pressure dropping funnel in sequence under the protection of nitrogen, stirring until the raw materials are completely dissolved, cooling to-70-80 ℃, starting to drop 1.2mol of n-butyl lithium, controlling the temperature to-70-80 ℃, keeping the temperature for 1h after dropping, continuing to drop 1.2mol of DMF (87.71 g), controlling the temperature to-70-80 ℃, keeping the temperature for reacting for 2h, detecting the reaction until the reaction is complete, and stopping the reaction. Heating to 20-30 deg.C, adding into 2L of 1mol/L dilute hydrochloric acid solution, extracting with 7L dichloroethane, and washing with water to neutrality. Concentrating the organic phase under reduced pressure (-0.06-0.085 MPa, 50-60 deg.C) to obtain about 400mL of solvent, adding 2L of petroleum ether, stirring at 20-30 deg.C for 4 hr, and filtering. The filter cake is rinsed with petroleum ether. 302g of intermediate 88f are obtained.

(5) 150mL of ethanol was added to a three-neck reaction flask equipped with a mechanical stirrer, a thermometer, and a constant pressure dropping funnel, and the intermediate 88f (471mmol, 163.2g) and sodium hydroxide (707mmol, 28.30g) were added with stirring while the temperature of the system was controlled at 20 ℃ so that the system was colorless solution after the addition. Dissolving the raw material 13b (471mmol, 94.35g) in 100mL ethanol, slowly dripping into the reaction solution, controlling the temperature in the dripping process at 20 ℃, slightly releasing heat of the system, measuring samples at the temperature of 20 ℃ at intervals of 2h after the dripping is finished, and completely reacting for 3 h. The reaction solution is added into 250mL of water under stirring, the mixture is filtered after being stirred for 10min, and a filter cake is pulped to be neutral in 250mL of water each time. And (3) drying the filter cake under reduced pressure (-0.06-0.085 MPa at 50-60 ℃) to constant weight to obtain 156.3g of intermediate 88 g.

(6) A three-neck reaction flask provided with a mechanical stirring device, a thermometer and a reflux condenser is added with 88g of intermediate (193mmol, 102g), 13f of intermediate (193mmol, 50.10g), 200mL of dioxane and sodium hydroxide (290mmol, 11.60g) in sequence under the protection of nitrogen, the temperature is kept at 25 ℃ for reaction for 3h, the reaction is detected until the reaction is complete, and the reaction is stopped. Cooling to 25-30 ℃, adding 130mL of water and 300mL of toluene, stirring for separating liquid, extracting a water phase once by using 130mL of toluene, separating liquid, combining organic phases, washing with water to be neutral, adding 7g of anhydrous sodium sulfate into the organic phase, stirring and drying, filtering, concentrating the organic phase (minus 0.06-0.075 MPa, 55-60 ℃) until no solvent is produced to obtain a crude product, adding 200mL of ethanol, stirring at 25 ℃ to separate out a large amount of solid, and filtering. The filter cake is rinsed with ethanol. 133g of intermediate 88h were obtained.

(7) Adding 88h (148.56mmol, 93g) of intermediate and 350ml of THF (hydrogen fluoride) into a three-mouth reaction bottle provided with a mechanical stirring device, a low-temperature pot, a thermometer and a constant-pressure dropping funnel in sequence under the protection of nitrogen, stirring until the intermediate is completely dissolved, cooling to-70-80 ℃, starting to drop 163mmol of n-butyl lithium, controlling the temperature to be-70-80 ℃, keeping the temperature for 1h after dropping, continuing to drop 163mmol of tributyl borate, controlling the temperature to be-70-80 ℃, keeping the temperature for reaction for 2h, detecting the reaction until the reaction is complete, and stopping the reaction. Heating to 20-30 ℃, adding into 2L of 1mol/L dilute hydrochloric acid solution, stirring for 4h at 20-30 ℃, and filtering. The filter cake is rinsed with petroleum ether. 82g of intermediate 88i are obtained.

(8) Adding 72mL of toluene and 20mL of water into a three-neck flask provided with a mechanical stirrer, a thermometer and a Y-shaped tube under the protection of nitrogen, starting stirring, adding 88d (15mmol, 6.42g) of an intermediate, 12a (15mmol, 3.39g) of a raw material and 30mmol, 4.15g of potassium carbonate, heating to 45-50 ℃, rapidly adding palladium acetate (0.075mmol, 0.017g), continuously heating to 65-70 ℃, and carrying out heat preservation reaction for 8 hours. And cooling the reaction liquid to 15-20 ℃, filtering, draining, leaching a filter cake with ethanol, and draining. 8.5g of intermediate 88j are obtained.

(7) Adding 72mL of toluene, 54mL of ethanol and 20mL of water into a three-neck flask provided with a mechanical stirrer, a thermometer and a Y-shaped tube under the protection of nitrogen, starting stirring, adding an intermediate 88j (14.63mmol, 8.4g), an intermediate 88i (14.8mmol, 8.64g), potassium carbonate (30mmol, 4.15g) and tetrabutylammonium bromide (1.5mmol, 0.48g), heating to 45-50 ℃, quickly adding palladium acetate (0.075mmol, 0.017g), continuously heating to 65-70 ℃, and carrying out heat preservation reaction for 8 hours. And cooling the reaction liquid to 15-20 ℃, filtering, draining, leaching a filter cake with ethanol, and draining. Hot-dissolving the filter cake with toluene, passing through a heat-insulating column, cooling the column-passing liquid to 15-20 ℃, filtering, draining, and recrystallizing the filter cake with toluene to LC>99.9% to obtain compound P88(8.58g, yield 54%). 1085.92[ M + H ] M/z]⁺。

Synthesis example 10 preparation of Compound P99

(1) 150mL of ethanol was added to a three-neck reaction flask equipped with a mechanical stirrer, a thermometer, and a constant pressure dropping funnel, the starting materials 99a (471mmol, 97.14g) and sodium hydroxide (707mmol, 28.30g) were added with stirring, the temperature of the system was controlled at 20 ℃, and the system was colorless solution after the addition. Dissolving the raw material 13b (471mmol, 94.35g) in 100mL ethanol, slowly dropwise adding into the reaction solution, controlling the temperature in the dropwise adding process at 20 ℃, slightly releasing heat of the system, and reacting for 3h at 20 ℃ after the dropwise adding is finished. The reaction solution is added into 250mL of water under stirring, the mixture is filtered after being stirred for 10min, and a filter cake is pulped to be neutral in 250mL of water each time. And (3) drying the filter cake under reduced pressure (-0.06-0.085 MPa at 50-60 ℃) to constant weight to obtain 178.30g of intermediate 99 b.

(2) A three-neck reaction flask equipped with a mechanical stirrer, a thermometer and a reflux condenser is charged with intermediate 99b (193mmol, 74.9g), intermediate 13f (193mmol, 50.10g), 200mL dioxane and sodium hydroxide (290mmol, 11.60g) in sequence under nitrogen protection, and the reaction is kept at 25 ℃ for 3h, and the reaction is detected until the reaction is complete, and then the reaction is stopped. Cooling to 25-30 ℃, adding 130mL of water and 300mL of toluene, stirring for separating liquid, extracting a water phase once by using 130mL of toluene, separating liquid, combining organic phases, washing with water to be neutral, adding 7g of anhydrous sodium sulfate into the organic phase, stirring and drying, filtering, concentrating the organic phase (minus 0.06-0.075 MPa, 55-60 ℃) until no solvent is produced to obtain a crude product, adding 200mL of ethanol, stirring at 25 ℃ to separate out a large amount of solid, and filtering. The filter cake is rinsed with ethanol. 111.23g of intermediate 99c were obtained.

(3) Adding an intermediate 99c (148.56mmol, 72.14g) and 350ml of THF (hydrogen fluoride) into a three-mouth reaction bottle provided with a mechanical stirring device, a low-temperature pot, a thermometer and a constant-pressure dropping funnel in sequence under the protection of nitrogen, stirring until the intermediate is completely dissolved, cooling to-70-80 ℃, starting to drop 163mmol of n-butyl lithium, controlling the temperature to-70-80 ℃, keeping the temperature for 1h after dropping, continuing to drop 163mmol of tributyl borate, controlling the temperature to-70-80 ℃, keeping the temperature for reaction for 2h, detecting the reaction until the reaction is complete, and stopping the reaction. Heating to 20-30 ℃, adding into 2L of 1mol/L dilute hydrochloric acid solution, stirring for 4h at 20-30 ℃, and filtering. The filter cake is rinsed with petroleum ether. 56g of intermediate 99d are obtained.

(4) Adding 20mL of THF solution of raw material 99e (100mmol, 20.71g of raw material 99e is dissolved in 200mL of THF) into a three-port reaction flask provided with a mechanical stirring device, a thermometer and a reflux condenser tube under the protection of nitrogen, starting stirring, heating to initiate reaction, continuously dropwise adding the residual THF solution of raw material 99e, and keeping the temperature for 1h after dropwise adding. And (3) adding 200mL of THF into another three-mouth reaction bottle with a mechanical stirrer, a thermometer and a dropping funnel under the protection of nitrogen, stirring, adding 99f (150mmol, 27.66g) of the raw material, stirring until the raw material is dissolved and clear, continuously dropwise adding the prepared Grignard reagent, controlling the temperature to be-5-5 ℃, continuously preserving the temperature for 2 hours, detecting the reaction until the reaction is complete, and stopping the reaction. Heating to 25 ℃, adding 130mL of water and 300mL of toluene, stirring and separating liquid, extracting the water phase once by using 130mL of toluene, separating liquid, combining organic phases, washing the organic phases to be neutral, adding 7g of anhydrous sodium sulfate into the organic phases, stirring and drying, filtering, concentrating the organic phases (0.075MPa, 55 ℃) until no solvent is produced to obtain a crude product, adding 200mL of petroleum ether, stirring at 25 ℃ to separate out a large amount of solid, and filtering. The filter cake is rinsed with ethanol. 28.2g of intermediate 99g are obtained.

(5) Adding 72mL of toluene and 20mL of water into a three-neck flask provided with a mechanical stirrer, a thermometer and a Y-shaped tube under the protection of nitrogen, starting stirring, adding 99g (15mmol, 4.14g) of an intermediate, 87d (15mmol, 6.42g) of an intermediate and 30mmol, 4.15g of potassium carbonate, heating to 45-50 ℃, rapidly adding palladium acetate (0.075mmol, 0.017g), continuously heating to 65-70 ℃, and carrying out heat preservation reaction for 8 hours. And cooling the reaction liquid to 15-20 ℃, filtering, draining, leaching a filter cake with ethanol, and draining. 8.5g of intermediate 99h are obtained.

(6) Adding 72mL of toluene, 54mL of ethanol and 20mL of water into a three-neck flask provided with a mechanical stirrer, a thermometer and a Y-shaped tube under the protection of nitrogen, starting stirring, adding 99h (10mmol, 6.24g) of an intermediate, 99d (10mmol, 4.52g) of an intermediate, 20mmol, 2.77g of potassium carbonate and 1.5mmol, 0.48g of tetrabutylammonium bromide, heating to 45-50 ℃, quickly adding 0.075mmol, 0.017g of palladium acetate, and continuously heating to 65-70 ℃ for reaction for 8h under the condition of heat preservation. And cooling the reaction liquid to 15-20 ℃, filtering, draining, leaching a filter cake with ethanol, and draining. Hot-dissolving the filter cake with toluene, passing through a heat-insulating column, cooling the column-passing liquid to 15-20 ℃, filtering, draining, and recrystallizing the filter cake with toluene to LC>99.9% to give compound P99(5.28g, yield 53%). 995.97[ M + H ] M/z]⁺。

Synthesis example 11 preparation of Compound P110

(1) 150mL of THF is added into a three-mouth reaction bottle provided with a mechanical stirring device, a thermometer and a constant pressure dropping funnel, stirring is started, the raw material 110a (CAS:10495-73-5, 100mmol, 23.40g) and liquid nitrogen are added, the temperature is reduced to-80 to-90 ℃, n-butyl lithium (110mmol, 55mL) is added dropwise, the system temperature is controlled to-80 to-90 ℃, and the temperature is kept for 1h after the dropwise addition. And continuously dropwise adding tributyltin chloride (100mmol, 32.55g), controlling the system temperature to be-80 to-90 ℃, and preserving heat for 1h after dropwise adding. The reaction mixture was warmed to room temperature with stirring and quenched dropwise with 50ml of 2M dilute hydrochloric acid. The reaction mixture was added to a mixed solution of 100mL of water and 250mL of methylene chloride with stirring, and after stirring for 10min, the mixture was separated, and the organic phase was washed with water to neutrality. The filtrate was concentrated under reduced pressure (-0.06-0.085 MPa, 50-60 ℃) until no droplets were formed, yielding 45.40g of intermediate 110 b.

(2) Adding 250mL of toluene, 125mL of ethanol and 125mL of water into a three-neck flask provided with a mechanical stirrer, a thermometer and a Y-shaped tube under the protection of nitrogen, starting stirring, adding an intermediate 110b (100mmol, 45.40g), a raw material 110c (CAS:2831-66-5, 50mmol, 7.50g) and potassium carbonate (150mmol, 20.70g), heating to 45-50 ℃, quickly adding 0.001mmol, 1.16g of tetrakis (triphenylphosphine) palladium, and continuously heating to 65-70 ℃ for reaction for 8 hours under the condition of heat preservation. And cooling the reaction liquid to 15-20 ℃, filtering, draining, leaching a filter cake with ethanol, and draining. Hot-dissolving the filter cake with toluene, passing through a heat-insulating column, cooling the column-passing liquid to 15-20 ℃, filtering, draining, and recrystallizing the filter cake with toluene to LC>99.9% to obtain compound P110(13.62g, yield 35%). 389.14[ M + H ] M/z]⁺。

Synthesis example 12 preparation of Compound P113

Adding 250mL of toluene, 125mL of ethanol and 125mL of water into a three-neck flask provided with a mechanical stirrer, a thermometer and a Y-shaped tube under the protection of nitrogen, starting stirring, adding an intermediate 110b (100mmol, 45.40g), a raw material 16a (50mmol, 11.89g) and potassium carbonate (150mmol, 20.70g), heating to 45-50 ℃, quickly adding tetrakis (triphenylphosphine) palladium (0.001mmol, 1.16g), continuously heating to 65-70 ℃, and carrying out heat preservation reaction for 8 hours. And cooling the reaction liquid to 15-20 ℃, filtering, draining, leaching a filter cake with ethanol, and draining. Hot-dissolving the filter cake with toluene, passing through a heat-insulating column, cooling the column-passing liquid to 15-20 ℃, filtering, draining, and recrystallizing the filter cake with toluene to LC>99.9% to obtain compound P113(16.30g, yield 42%). 388.14[ M + H ] M/z]⁺。

Synthesis example 13 preparation of Compound P115

Adding 250mL of toluene, 125mL of ethanol and 125mL of water into a three-neck flask provided with a mechanical stirrer, a thermometer and a Y-shaped tube under the protection of nitrogen, starting stirring, adding an intermediate 110b (100mmol, 45.40g), a raw material 115a (CAS:1837-55-4,50mmol, 7.45g) and potassium carbonate (150mmol, 20.70g), heating to 45-50 ℃, quickly adding 0.001mmol, 1.16g of tetrakis (triphenylphosphine) palladium, and continuously heating to 65-70 ℃ for reaction for 8 hours under the condition of heat preservation. And cooling the reaction liquid to 15-20 ℃, filtering, draining, leaching a filter cake with ethanol, and draining. Hot-dissolving the filter cake with toluene, passing through a heat-insulating column, cooling the column-passing liquid to 15-20 ℃, filtering, draining, and recrystallizing the filter cake with toluene to LC>99.9% to obtain compound P115(12.43g, yield 32%). 388.14[ M + H ] M/z]⁺。

Synthesis example 14 preparation of Compound P117

Adding 250mL of toluene, 125mL of ethanol and 125mL of water into a three-neck flask provided with a mechanical stirrer, a thermometer and a Y-shaped tube under the protection of nitrogen, starting stirring, adding an intermediate 110b (100mmol, 45.40g), a raw material 13i (50mmol, 23.69g) and potassium carbonate (150mmol, 20.70g), heating to 45-50 ℃, quickly adding 0.001mmol (1.16 g) of tetrakis (triphenylphosphine) palladium, and continuously heating to 65-70 ℃ for reaction for 8 hours under the condition of heat preservation. And cooling the reaction liquid to 15-20 ℃, filtering, draining, leaching a filter cake with ethanol, and draining. Hot-dissolving the filter cake with toluene, passing through a heat-insulating column, cooling the column-passing liquid to 15-20 ℃, filtering, draining, and recrystallizing the filter cake with toluene to LC>99.9% to obtain compound P117(15.89g, yield 41%). 387.45[ M + H ] M/z]⁺。

Synthesis example 15 preparation of Compound P130

(1) Adding 250mL of toluene, 125mL of ethanol and 125mL of water into a three-neck flask provided with a mechanical stirrer, a thermometer and a Y-shaped tube under the protection of nitrogen, starting stirring, adding 130a (CAS:49669-22-9, 100mmol, 31.40g), 13e (100mmol, 12.19g) and potassium carbonate (150mmol, 20.70g), heating to 45-50 ℃, quickly adding palladium acetate (0.001mmol, 0.22g), continuously heating to 65-70 ℃, and carrying out heat preservation reaction for 8 hours. And cooling the reaction liquid to 15-20 ℃, adding the reaction liquid into 250mL of toluene, stirring, and separating the liquid. The organic phase was washed three times with 125 mL/time water to neutrality. The organic phase is dried by anhydrous sodium sulfate, then passes through a silica gel column, and the column passing liquid is concentrated to no liquid drop under reduced pressure (-0.06-0.085 MPa, 50-60 ℃) to obtain 31.00g of the intermediate 130 b.

(2) 200ml of LTHF is added into a three-mouth reaction bottle provided with a mechanical stirring device, a thermometer and a constant pressure dropping funnel, the stirring is started, the intermediate 130b (100mmol, 31.00g) and liquid nitrogen are added, the temperature is reduced to-80 to-90 ℃, n-butyl lithium (110mmol, 55ml) is added dropwise, the temperature of the system is controlled to-80 to-90 ℃, and the temperature is kept for 1 hour after the dropwise addition. And continuously dropwise adding tributyltin chloride (100mmol, 32.55g), controlling the system temperature to be-80 to-90 ℃, and preserving heat for 1h after dropwise adding. The reaction mixture was warmed to room temperature with stirring and quenched dropwise with 50ml of 2M dilute hydrochloric acid. The reaction mixture was added to a mixed solution of 100mL of water and 250mL of methylene chloride with stirring, and after stirring for 10min, the mixture was separated, and the organic phase was washed with water to neutrality. The filtrate was concentrated under reduced pressure (-0.06-0.085 MPa, 50-60 ℃) until no droplets were formed, yielding 52.22g of intermediate 130 c.

(3) Adding 250mL of toluene, 125mL of ethanol and 125mL of water into a three-neck flask provided with a mechanical stirrer, a thermometer and a Y-shaped tube under the protection of nitrogen, starting stirring, adding an intermediate 130c (100mmol, 52.22g), a raw material 13i (50mmol, 23.69g) and potassium carbonate (150mmol, 20.70g), heating to 45-50 ℃, quickly adding 0.001mmol of tetrakis (triphenylphosphine) palladium,1.16g), continuously heating to 65-70 ℃, and carrying out heat preservation reaction for 8 hours. And cooling the reaction liquid to 15-20 ℃, filtering, draining, leaching a filter cake with ethanol, and draining. Hot-dissolving the filter cake with toluene, passing through a heat-insulating column, cooling the column-passing liquid to 15-20 ℃, filtering, draining, and recrystallizing the filter cake with toluene to LC>99.9% to obtain compound P130(27.52g, yield 51%). 539.21[ M + H ] M/z]⁺。

Synthesis example 16 preparation of Compound P134

Adding 250mL of toluene, 125mL of ethanol and 125mL of water into a three-neck flask provided with a mechanical stirrer, a thermometer and a Y-shaped tube under the protection of nitrogen, starting stirring, adding 169f (100mmol, 52.23g) of an intermediate, 13i (50mmol, 23.69g) of a raw material and potassium carbonate (150mmol, 20.70g), heating to 45-50 ℃, quickly adding 0.001mmol (1.16 g) of tetrakis (triphenylphosphine) palladium, and continuously heating to 65-70 ℃ for reaction for 8 hours under the condition of heat preservation. And cooling the reaction liquid to 15-20 ℃, filtering, draining, leaching a filter cake with ethanol, and draining. Hot-dissolving the filter cake with toluene, passing through a heat-insulating column, cooling the column-passing liquid to 15-20 ℃, filtering, draining, and recrystallizing the filter cake with toluene to LC>99.9% to obtain compound P134(24.37g, yield 45%). 541.20[ M + H ] M/z]⁺。

Synthesis example 17 preparation of Compound P169

(1) 150mL of ethanol was added to a three-neck reaction flask equipped with a mechanical stirrer, a thermometer, and a constant pressure dropping funnel, the raw material 169a (471mmol, 35.36g of 40% aqueous solution) and sodium hydroxide (707mmol, 28.30g) were added with stirring while controlling the system temperature at 20 ℃ and the system was colorless solution after the addition. Dissolving the raw material 13b (471mmol, 94.35g) in 100mL ethanol, slowly dripping into the reaction solution, controlling the temperature in the dripping process at 20 ℃, slightly releasing heat of the system, keeping the temperature at 20 ℃ after finishing dripping, and completely reacting for 3 h. The reaction solution is added into 250mL of water under stirring, the mixture is filtered after being stirred for 10min, and a filter cake is pulped to be neutral in 250mL of water each time. And (3) drying the filter cake under reduced pressure (-0.06-0.085 MPa at 50-60 ℃) to constant weight to obtain 78.30g of an intermediate 169 b.

(2) To a three-necked reaction flask equipped with a mechanical stirrer, a thermometer and a reflux condenser, 200mL of dioxane and 100mL of water were sequentially added under nitrogen protection, and cesium carbonate (414mmol, 134.89g), raw material 13d (276mmol, 50.00g) and raw material 169c (276mmol, 33.93g) were added with stirring. Heating to 55 ℃, adding tetrakis (triphenylphosphine) palladium (2.76mmol, 3.19g), heating to 70-80 ℃, carrying out reflux reaction for 14h, detecting the reaction until the reaction is complete, and stopping the reaction. Cooling to 25 ℃, adding 130mL of water and 300mL of toluene, stirring and separating liquid, extracting the water phase once by using 130mL of toluene, separating liquid, combining organic phases, washing the organic phases to be neutral, adding 7g of anhydrous sodium sulfate into the organic phases, stirring and drying, filtering, concentrating the organic phases (0.075MPa, 55 ℃) until no solvent is produced to obtain a crude product, adding 200mL of petroleum ether, stirring at 25 ℃ to separate out a large amount of solid, and filtering. The filter cake is rinsed with ethanol. 50.21g of intermediate 169d are obtained.

(3) A three-neck reaction flask equipped with a mechanical stirrer, a thermometer and a reflux condenser was charged with the intermediate 169b (193mmol, 40.93g), the intermediate 169d (193mmol, 50.21g), 200mL dioxane and sodium hydroxide (290mmol, 11.60g) in this order under nitrogen protection, and the reaction was incubated at 25 ℃ for 3 hours, followed by detection until completion and then stopped. Cooling to 25-30 ℃, adding 130mL of water and 300mL of toluene, stirring for separating liquid, extracting a water phase once by using 130mL of toluene, separating liquid, combining organic phases, washing with water to be neutral, adding 7g of anhydrous sodium sulfate into the organic phase, stirring and drying, filtering, concentrating the organic phase (minus 0.06-0.075 MPa, 55-60 ℃) until no solvent is produced to obtain a crude product, adding 200mL of ethanol, stirring at 25 ℃ to separate out a large amount of solid, and filtering. The filter cake is rinsed with ethanol. 41.32g of intermediate 169e were obtained.

(4) 200ml of LTHF is added into a three-mouth reaction bottle provided with a mechanical stirring device, a thermometer and a constant pressure dropping funnel, the stirring is started, the intermediate 169e (100mmol, 31.22g) and liquid nitrogen are added, the temperature is reduced to-80 to-90 ℃, n-butyl lithium (110mmol, 55ml) is added dropwise, the system temperature is controlled to-80 to-90 ℃, and the temperature is kept for 1 hour after the dropwise addition. And continuously dropwise adding tributyltin chloride (100mmol, 32.55g), controlling the system temperature to be-80 to-90 ℃, and preserving heat for 1h after dropwise adding. The reaction mixture was warmed to room temperature with stirring and quenched dropwise with 50ml of 2M dilute hydrochloric acid. The reaction mixture was added to a mixed solution of 100mL of water and 250mL of methylene chloride with stirring, and after stirring for 10min, the mixture was separated, and the organic phase was washed with water to neutrality. The filtrate was concentrated under reduced pressure (-0.06-0.085 MPa, 50-60 ℃) until no droplets were formed, yielding 52.25g of intermediate 169 f.

(5) Adding 250mL of toluene, 125mL of ethanol and 125mL of water into a three-neck flask provided with a mechanical stirrer, a thermometer and a Y-shaped tube under the protection of nitrogen, starting stirring, adding 169f (100mmol, 52.23g) of an intermediate, 16a (50mmol, 11.89g) of a raw material and potassium carbonate (150mmol, 20.70g), heating to 45-50 ℃, quickly adding 0.001mmol and 1.16g of palladium tetrakis (triphenylphosphine), and continuously heating to 65-70 ℃ for reaction for 8 hours under the condition of heat preservation. And cooling the reaction liquid to 15-20 ℃, filtering, draining, leaching a filter cake with ethanol, and draining. Hot-dissolving the filter cake with toluene, passing through a heat-insulating column, cooling the column-passing liquid to 15-20 ℃, filtering, draining, and recrystallizing the filter cake with toluene to LC>99.9% to obtain compound P169(20.62g, yield 38%). 542.20[ M + H ] M/z]⁺。

Examples 1 to 17 are intended to illustrate the use of the organic compounds of the present application in electron transport layers in organic electroluminescent devices.

Example 1

A method of manufacturing an organic light emitting device, comprising the steps of:

(1) firstly, distilled water and methanol are sequentially used for ultrasonic cleaningDrying a glass bottom plate of an Indium Tin Oxide (ITO) electrode;

(2) cleaning the anode base plate for 5 minutes by using oxygen plasma, and then loading the cleaned anode base plate into vacuum deposition equipment;

(3) the compound 2-TNATA (CAS: 185690-41-9) was vacuum deposited onto an ITO electrodeA hole injection layer HIL with a thickness, and NPB (N, N '-diphenyl-N, N' -di (1-naphthyl) -1,1 '-biphenyl-4, 4' -diamine) is deposited on the hole injection layer in vacuumA hole transport layer HTL with a thickness, and TCTA is vapor-deposited on the hole transport layer to formElectron blocking layer EBL of thickness. The host emitting material BPO and dopant (structure shown as formula C) were then doped at 96: 4 are co-deposited on the hole transport regionA light emitting layer EML of thickness;

(4) will be provided withVacuum depositing a hole blocking layer DPVBi (CAS: 142289-08-5) with a thickness on the light emitting layer to form the hole blocking layer;

(5) compound P13 ZhenDepositing a void on the hole blocking layer to formElectron transport layer of thickness and formation of LiQ (8-hydroxyquinoline-lithium) by vapor deposition on the electron transport layerAn electron injection layer EIL with a thickness of 1: 9, mixing magnesium (Mg) and silver (Ag) at a vapor deposition rate, and vacuum-evaporating on the electron injection layer to formA cathode of thickness. The fabrication of an organic light-emitting device was thus completed, and the fabricated organic light-emitting device was denoted as a 1.

Examples 2 to 17

Organic electroluminescent devices were produced in the same manner as in example 1, except that the corresponding compounds in the electron transport material column shown in table 1 were each used in forming the Electron Transport Layer (ETL).

Comparative example 1

An organic electroluminescent device was produced in the same manner as in example 1, except that the compound P13 as the electron transport layer was replaced with the compound A (Alq)₃) Instead, an organic electroluminescent device D1 was thus produced. Alq₃The structural formula of the conventional commonly used electron transport material is shown as follows:

comparative example 2

An organic electroluminescent device was fabricated in the same manner as in example 1, except that the compound P13 as an electron transport layer material was replaced with the compound B (2-NPIP), to thereby yield an organic electroluminescent device D2. The structural formula of compound B is shown below:

test example

The organic electroluminescent devices A1-A17, D1 and D2 prepared as above were controlled at 15mA/cm²The life of the T95 device was tested under the condition that the data voltage, efficiency and color coordinate are 10mA/cm at constant current density²The following tests were carried out, and the test results are shown in table 1.

TABLE 1

From the above results, it can be seen that the driving voltages of the organic electroluminescent devices a1-a17 prepared in examples 1 to 17 were between 3.9 and 4.1V, which are 12.8% to 17% lower than the driving voltage of the organic electroluminescent device D1 of comparative example 1. The luminosity efficiency of the organic electroluminescent devices A1-A17 is between 6.7 and 7.1Cd/A, and is improved by 63 to 73 percent compared with the luminosity efficiency of the organic electroluminescent device D1 of the comparative example 1. The external quantum efficiency of the organic electroluminescent devices A1-A17 is 11.8-12.9%, and is 43.9% -57.3% higher than that of D1. The T95 life of the organic electroluminescent devices A1-A17 is increased by 64.8% -97.5% in 201-241h compared with the T95 life of D1 in comparative example 1.

The organic electroluminescent devices a1-a17 prepared in examples 1 to 17 had lower driving voltage, higher photometric efficiency, higher external quantum efficiency, and longer service life than the device D1 of comparative example 1.

The luminance efficiencies of the organic electroluminescent devices A1-A17 prepared in examples 1-17 were between 6.7-7.1Cd/A, which are 15.5-22.4% higher than the luminance efficiency of the organic electroluminescent device D2 prepared in comparative example 2. The T95 life of the organic electroluminescent devices A1-A17 is improved by 24.1-48.8% in the range of 201-241h compared with the T95 life of the organic electroluminescent device D2 prepared in the comparative example 2.

The organic electroluminescent devices a1-a17 prepared in examples 1 to 17 had higher luminous efficiency and longer service life than the device D2 of comparative example 2.

Compared with Compound A (Alq)₃) The organic compound is used as an electron transport layer material of an organic electroluminescent device, and has the advantages of lower driving voltage, better luminous efficiency and longer service life. Compared with the compound B (2-NPIP), the organic compound has better light efficiency and longer service life as an electron transport layer material of an organic electroluminescent device, and can significantly improve the performance of the organic electroluminescent device when being used for the electron transport layer of the organic electroluminescent device.

The preferred embodiments of the present application have been described in detail with reference to the accompanying drawings, however, the present application is not limited to the details of the above embodiments, and various simple modifications can be made to the technical solution of the present application within the technical idea of the present application, and these simple modifications are all within the protection scope of the present application.

It should be noted that, in the foregoing embodiments, various features described in the above embodiments may be combined in any suitable manner, and in order to avoid unnecessary repetition, various possible combinations are not described in the present application.

In addition, any combination of the various embodiments of the present application is also possible, and the same should be considered as disclosed in the present application as long as it does not depart from the idea of the present application.