阅读说明：本技术 一种3-芳甲酰基茚酮-2-甲酸酯类化合物的合成方法 (Synthetic method of 3-arylformyl indanone-2-formate compound ) 是由 沈娜娜 李彬 范学森 杨玉洁 张新迎 于 2020-12-27 设计创作，主要内容包括：本发明公开了一种3-芳甲酰基茚酮-2-甲酸酯类化合物的合成方法,属于有机合成技术领域。本发明的技术方案要点为：将邻炔基苯甲酰基重氮乙酸乙酯类化合物和水溶于溶剂中,然后加入催化剂,在空气氛围中于30-100#C搅拌反应制得目标产物3-芳甲酰基茚酮-2-甲酸酯类化合物。本发明通过邻炔基苯甲酰基重氮乙酸乙酯类化合物在铁盐的催化作用下和水经过卡宾/炔的复分解反应合成3-芳甲酰基茚酮-2-甲酸酯类化合物,具有操作简便、条件温和、环境友好、经济高效等优点,适合于工业化生产。(The invention discloses a synthesis method of a 3-arylformyl indanone-2-formate compound, belonging to the technical field of organic synthesis. The technical scheme provided by the invention has the key points that: dissolving an o-alkynyl benzoyl diazoacetic acid ethyl ester compound in water in a solvent, adding a catalyst, and performing a stirring reaction at 30-100 ℃ in an air atmosphere to obtain a target product, namely a 3-arylformyl indanone-2-formate compound. The 3-arylformyl indanone-2-formate compound is synthesized by carrying out carbene/alkyne double decomposition reaction on the o-alkynyl benzoyl diazoacetic ether compound and water under the catalysis of iron salt, has the advantages of simple and convenient operation, mild condition, environmental friendliness, economy, high efficiency and the like, and is suitable for industrial production.)

1. A synthetic method of a 3-arylformyl indanone-2-formate compound is characterized by comprising the following specific synthetic processes: dissolving an o-alkynyl benzoyl diazoacetic acid ethyl ester compound 1 and water in a solvent, then adding a catalyst, and stirring and reacting at 30-100 ℃ in an air atmosphere to obtain a target product 3-arylformyl indanone-2-formate compound 2, wherein the reaction equation in the synthesis method is as follows:

wherein R is¹Is hydrogen, halogen, C_1-4Alkyl, alkoxy or trifluoromethyl, R²Is 2-naphthyl, 1-naphthyl, phenyl or substituted phenyl, the substituent on the phenyl ring of the substituted phenyl is fluorine, chlorine, bromine, methyl, methoxy, phenyl or trifluoromethyl, the solvent is dichloromethane, 1, 2-dichloroethane, toluene or tetrahydrofuran, and the catalyst is ferric chloride, ferric trifluoromethanesulfonate, ferrous chloride, ferrous trifluoromethanesulfonate or ferrous acetate.

2. The method for synthesizing 3-arylformyl indanone-2-formate compounds according to claim 1, which is characterized in that: the weight ratio of the o-alkynyl benzoyl diazoacetic acid ethyl ester compound 1, water and the catalyst is 1:1-10: 0.1-1.

Technical Field

The invention belongs to the technical field of organic synthesis, and particularly relates to a synthesis method of a 3-arylformyl indanone-2-formate compound.

Background

The indanone compounds are important benzo five-membered carbocyclic compounds, widely exist in natural product molecules, and often have important biological and pharmaceutical activities, such as antibiosis, antivirus, anti-HIV and the like. Partial indenone compounds can also effectively treat Alzheimer's disease or show good anticancer property in clinic. In addition, the indenone derivative has high research and application values in the field of material chemistry, and a plurality of organic functional materials contain the skeleton with the advantageous structure. On the other hand, the introduction of a benzoyl or ester group into some dominant backbones increases their pharmaceutical activity and may result in some unexpected effects. It is expected that 3-arylformyl indanone-2-formate compounds formed by simultaneously introducing arylformyl and ester groups on indanone skeletons can have better medicinal value. Therefore, the research and development of a new method for efficiently synthesizing the 3-arylformyl indanone-2-formate compound from simple and easily-obtained raw materials under mild reaction conditions have important theoretical significance and important application value.

Disclosure of Invention

The technical problem to be solved by the invention is to provide a synthesis method of a 3-arylformyl indanone-2-formate compound, the synthesis method synthesizes the 3-arylformyl indanone-2-formate compound through a carbene/alkyne double decomposition reaction of an o-alkynyl benzoyl diazoacetic acid ethyl ester compound and water under the catalysis of iron salt, and the synthesis method has the advantages of simple and convenient operation, mild conditions, environmental friendliness, economy, high efficiency and the like, and is suitable for industrial production.

The invention adopts the following technical scheme for solving the technical problems, and the synthesis method of the 3-arylformyl indanone-2-formate compound is characterized by comprising the following specific synthesis processes: dissolving an o-alkynyl benzoyl diazoacetic acid ethyl ester compound 1 and water in a solvent, then adding a catalyst, and stirring and reacting at 30-100 ℃ in an air atmosphere to obtain a target product 3-arylformyl indanone-2-formate compound 2, wherein the reaction equation in the synthesis method is as follows:

wherein R is¹Is hydrogen, halogen, C_1-4Alkyl, alkoxy or trifluoromethyl, R²Is 2-naphthyl,The catalyst is ferric chloride, ferric trifluoromethanesulfonate, ferrous chloride, ferrous trifluoromethanesulfonate or ferrous acetate.

Further preferably, the ratio of the quantities of the ortho-alkynyl benzoyl diazoacetic acid ethyl ester compound 1, the water and the catalyst is 1:1-10: 0.1-1.

Compared with the prior art, the invention has the following advantages: (1) the synthesis process is simple and efficient, and the 3-arylformyl indanone-2-formate compound is directly obtained through one-pot multi-step series reaction; (2) the reaction condition is mild, economic and green; (3) the application range of the substrate is wide. Therefore, the invention provides a novel method which is economical, practical, rapid and efficient for synthesizing the 3-arylformyl indanone-2-formate compound.

Detailed Description

The present invention is described in further detail below with reference to examples, but it should not be construed that the scope of the above subject matter of the present invention is limited to the following examples, and that all the technologies realized based on the above subject matter of the present invention belong to the scope of the present invention.

Example 1

Ethyl 2-diazo-3-oxo-3- (2- (phenylethynyl) phenyl) propionate (1a,64mg,0.2mmol), water (18mg,1mmol), ferric chloride (3.2mg,0.02mmol) and anhydrous 1, 2-dichloroethane (DCE,1mL) were added to a 15mL reaction tube, the mixture was stirred at 50 ℃ under air atmosphere for reaction for 15h, then cooled to room temperature, the reaction was spin-dried with silica gel, and the product 2a (16mg, 26%) was obtained as a yellow solid by silica gel column separation (petroleum ether/ethyl acetate ═ 10/1, v/v). The characterization data for this compound are as follows: IR (KBr) v 2982,1740,1669,1579,1251,1115,1016,760,718,676,590cm^-1；¹H NMR(400MHz,CDCl₃)δ:8.00(dd,J₁＝8.0Hz,J₂＝1.2Hz,1H),7.64-7.69(m,2H),7.46-7.55(m,2H),7.40-7.45(m,2H),7.08(dd,J₁＝6.4Hz,J₂＝1.2Hz,1H),4.06(q,J＝7.2Hz,2H),0.97(t,J＝7.2Hz,3H)ppm.¹³C NMR(100MHz,CDCl₃)δ:192.5,191.0,163.9,160.8,141.2,135.1,134.8,134.4,132.2,130.0,129.2,128.9,124.3,123.8,123.7,61.2,13.5ppm.HRMS(ESI)m/z:[M+Na]⁺calcd for C₁₉H₁₄NaO₄ 329.0784；Found:329.0775。

Example 2

Ethyl 2-diazo-3-oxo-3- (2- (phenylethynyl) phenyl) propionate (1a,64mg,0.2mmol), water (18mg,1mmol), ferric chloride (16mg,0.1mmol) and anhydrous 1, 2-dichloroethane (DCE,1mL) were added to a 15mL reaction tube, the mixture was stirred at 50 ℃ under air atmosphere for reaction for 15h, then cooled to room temperature, the reaction was spin-dried with silica gel, and the product 2a was isolated by silica gel column separation (petroleum ether/ethyl acetate ═ 10/1, v/v) to give a yellow solid product 2a (30mg, 49%).

Example 3

Ethyl 2-diazo-3-oxo-3- (2- (phenylethynyl) phenyl) propionate (1a,64mg,0.2mmol), water (18mg,1mmol), ferric chloride (16mg,0.1mmol) and anhydrous 1, 2-dichloroethane (DCE,1mL) were added to a 15mL reaction tube, the mixture was stirred at 50 ℃ under air atmosphere for reaction for 15h, then cooled to room temperature, the reaction was spin-dried with silica gel, and the product 2a was isolated by silica gel column separation (petroleum ether/ethyl acetate ═ 10/1, v/v) to give a yellow solid product 2a (35mg, 57%).

Example 4

Ethyl 2-diazo-3-oxo-3- (2- (phenylethynyl) phenyl) propionate (1a,64mg,0.2mmol), water (3.6mg,0.2mmol), ferric trichloride (16mg,0.1mmol) and anhydrous 1, 2-dichloroethane (DCE,1mL) were added to a 15mL reaction tube, the mixture was stirred at 50 ℃ under an air atmosphere for reaction for 15h, then cooled to room temperature, the reaction was spin-dried over silica gel, and the product 2a (12mg, 20%) was obtained as a yellow solid by silica gel column separation (petroleum ether/ethyl acetate ═ 10/1, v/v).

Example 5

Ethyl 2-diazo-3-oxo-3- (2- (phenylethynyl) phenyl) propionate (1a,64mg,0.2mmol), water (36mg,2mmol), ferric trichloride (16mg,0.1mmol) and anhydrous 1, 2-dichloroethane (DCE,1mL) were added to a 15mL reaction tube, the mixture was stirred at 50 ℃ under an air atmosphere for reaction for 15h, then cooled to room temperature, the reaction was spin-dried with silica gel, and the product 2a was isolated by silica gel column separation (petroleum ether/ethyl acetate ═ 10/1, v/v) to give a yellow solid product 2a (33mg, 54%).

Example 6

Ethyl 2-diazo-3-oxo-3- (2- (phenylethynyl) phenyl) propionate (1a,64mg,0.2mmol), water (18mg,1mmol), ferric chloride (16mg,0.1mmol) and anhydrous 1, 2-dichloroethane (DCE,1mL) were added to a 15mL reaction tube, the mixture was stirred at 50 ℃ under air atmosphere for reaction for 15h, then cooled to room temperature, the reaction was spin-dried with silica gel, and the product 2a was isolated by silica gel column separation (petroleum ether/ethyl acetate ═ 10/1, v/v) to give a yellow solid product 2a (36mg, 59%).

Example 7

To a 15mL reaction tube were added ethyl 2-diazo-3-oxo-3- (2- (phenylethynyl) phenyl) propionate (1a,64mg,0.2mmol), water (18mg,1mmol), ferric triflate (Fe (OTf)₃50mg,0.1mmol) and anhydrous 1, 2-dichloroethane (DCE,1mL), the mixture was stirred at 50 ℃ under an air atmosphere for 15h, then cooled to room temperature, the reaction was spin-dried with silica gel and separated on a silica gel column (petroleum ether/ethyl acetate-10/1, v/v) to give product 2a (28mg, 46%) as a yellow solid.

Example 8

To a 15mL reaction tube were added ethyl 2-diazo-3-oxo-3- (2- (phenylethynyl) phenyl) propionate (1a,64mg,0.2mmol), water (18mg,1mmol), ferrous triflate (Fe (OTf)₂35mg,0.1mmol) and anhydrous 1, 2-dichloroethane (DCE,1mL), the mixture was stirred at 50 ℃ under an air atmosphere for 15h, then cooled to room temperature, the reaction was spin-dried with silica gel and separated on a silica gel column (petroleum ether/ethyl acetate-10/1, v/v) to give product 2a (32mg, 52%) as a yellow solid.

Example 9

To a 15mL reaction tube were added ethyl 2-diazo-3-oxo-3- (2- (phenylethynyl) phenyl) propionate (1a,64mg,0.2mmol), water (18mg,1mmol), and ferrous chloride (FeCl)₂13mg,0.1mmol) and anhydrous 1, 2-dichloroethyleneAn alkane (DCE,1mL), and the mixture was stirred at 50 ℃ for 15h under an air atmosphere, then cooled to room temperature, the reaction was spin-dried with silica gel, and separated on a silica gel column (petroleum ether/ethyl acetate: 10/1, v/v) to give product 2a (14mg, 23%) as a yellow solid.

Example 10

To a 15mL reaction tube were added ethyl 2-diazo-3-oxo-3- (2- (phenylethynyl) phenyl) propionate (1a,64mg,0.2mmol), water (18mg,1mmol), ferrous acetate (Fe (OAc))₂17mg,0.1mmol) and anhydrous 1, 2-dichloroethane (DCE,1mL), the mixture was stirred at 50 ℃ under an air atmosphere for 15h, then cooled to room temperature, the reaction was spin-dried with silica gel and separated on a silica gel column (petroleum ether/ethyl acetate-10/1, v/v) to give product 2a (8mg, 13%) as a yellow solid.

Example 11

Ethyl 2-diazo-3-oxo-3- (2- (phenylethynyl) phenyl) propionate (1a,64mg,0.2mmol), water (18mg,1mmol), ferric chloride (16mg,0.1mmol) and anhydrous dichloromethane (DCM,1mL) were added to a 15mL reaction tube, the mixture was stirred at 50 ℃ under air atmosphere for reaction for 15h, then cooled to room temperature, the reaction was spin-dried with silica gel, and separated on silica gel column (petroleum ether/ethyl acetate ═ 10/1, v/v) to give product 2a (30mg, 49%) as a yellow solid.

Example 12

Ethyl 2-diazo-3-oxo-3- (2- (phenylethynyl) phenyl) propionate (1a,64mg,0.2mmol), water (18mg,1mmol), ferric chloride (16mg,0.1mmol) and anhydrous toluene (1mL) were added to a 15mL reaction tube, and the mixture was stirred at 50 ℃ under an air atmosphere for reaction for 15h, then cooled to room temperature, the reaction was spin-dried with silica gel, and separated by silica gel column (petroleum ether/ethyl acetate ═ 10/1, v/v) to give product 2a (8mg, 13%) as a yellow solid.

Example 13

Ethyl 2-diazo-3-oxo-3- (2- (phenylethynyl) phenyl) propionate (1a,64mg,0.2mmol), water (18mg,1mmol), ferric chloride (16mg,0.1mmol) and anhydrous tetrahydrofuran (1mL) were added to a 15mL reaction tube, and the mixture was stirred at 50 ℃ under an air atmosphere for reaction for 15h, then cooled to room temperature, the reaction was spin-dried with silica gel, and separated by silica gel column (petroleum ether/ethyl acetate ═ 10/1, v/v) to give product 2a (14mg, 23%) as a yellow solid.

Example 14

Ethyl 2-diazo-3-oxo-3- (2- (phenylethynyl) phenyl) propionate (1a,64mg,0.2mmol), water (18mg,1mmol), ferric chloride (16mg,0.1mmol) and anhydrous 1, 2-dichloroethane (DCE,1mL) were added to a 15mL reaction tube, the mixture was stirred at 30 ℃ under air atmosphere for reaction for 15h, then cooled to room temperature, the reaction was spin-dried with silica gel, and the product 2a was isolated by silica gel column separation (petroleum ether/ethyl acetate ═ 10/1, v/v) to give a yellow solid product 2a (6mg, 10%).

Example 15

Ethyl 2-diazo-3-oxo-3- (2- (phenylethynyl) phenyl) propionate (1a,64mg,0.2mmol), water (18mg,1mmol), ferric chloride (16mg,0.1mmol) and anhydrous 1, 2-dichloroethane (DCE,1mL) were added to a 15mL reaction tube, the mixture was stirred at 80 ℃ under an air atmosphere for reaction for 15h, then cooled to room temperature, the reaction was spin-dried with silica gel, and the product 2a was isolated by silica gel column separation (petroleum ether/ethyl acetate ═ 10/1, v/v) to give a yellow solid product 2a (46mg, 75%).

Example 16

Ethyl 2-diazo-3-oxo-3- (2- (phenylethynyl) phenyl) propionate (1a,64mg,0.2mmol), water (18mg,1mmol), ferric chloride (16mg,0.1mmol) and anhydrous 1, 2-dichloroethane (DCE,1mL) were added to a 15mL reaction tube, the mixture was stirred at 100 ℃ under an air atmosphere for reaction for 15h, then cooled to room temperature, the reaction was spin-dried with silica gel, and the product 2a was isolated by silica gel column separation (petroleum ether/ethyl acetate ═ 10/1, v/v) to give a yellow solid product 2a (42mg, 69%).

Example 17

1b (70mg,0.2mmol), water (18mg,1mmol), ferric trichloride (16mg,0.1mmol) and anhydrous 1, 2-dichloroethane (DCE,1mL) were charged into a 15mL reaction tube, the mixture was stirred at 80 ℃ under an air atmosphere for reaction for 15 hours, then cooled to room temperature, the reaction system was spin-dried with silica gel, and silica gel column separation (petroleum ether/ethyl acetate: 10/1, v/v) was performed to obtainProduct 2b (52mg, 76%) as a yellow solid. The characterization data for this compound are as follows: IR (KBr) v 3082,2987,1734,1671,1247,1125,1013,799,732,678,636cm^-1；¹H NMR(600MHz,CDCl₃)δ:7.96-7.98(m,2H),7.68(t,J＝7.8Hz,1H),7.62(d,J＝1.8Hz,1H),7.53(t,J＝7.8Hz,2H),7.40(dd,J₁＝7.8Hz,J₂＝1.8Hz,1H),7.03(d,J＝7.8Hz,1H),4.06(q,J＝7.2Hz,2H),0.97(t,J＝7.2Hz,3H)ppm.¹³C NMR(150MHz,CDCl₃)δ:192.0,189.7,163.3,160.5,139.2,138.7,135.01,134.97,133.8,131.5,129.2,128.9,125.0,124.6,124.0,61.4,13.5ppm.HRMS(ESI)m/z:[M+Na]⁺calcd for C₁₉H₁₃ClNaO₄ 363.0395；Found:363.0397。

Example 18

1c (77mg,0.2mmol), water (18mg,1mmol), ferric trichloride (16mg,0.1mmol) and anhydrous 1, 2-dichloroethane (DCE,1mL) were added to a 15mL reaction tube, the mixture was stirred at 80 ℃ under an air atmosphere for reaction for 15h, then cooled to room temperature, the reaction was stirred with silica gel and dried, and product 2c was isolated by silica gel column separation (petroleum ether/ethyl acetate: 10/1, v/v) to give product 2c as a yellow solid (57mg, 74%). The characterization data for this compound are as follows: IR (KBr) v 2994,1746,1671,1311,1261,1126,1109,1054,802,715,688cm^-1；¹H NMR(400MHz,CDCl₃)δ:7.96-7.99(m,2H),7.90(s,1H),7.73(d,J＝7.6Hz,1H),7.67-7.72(m,1H),7.54(t,J＝7.6Hz,2H),7.25(d,J＝7.6Hz,1H),4.07(q,J＝7.2Hz,2H),0.98(t,J＝7.2Hz,3H)ppm.¹³C NMR(150MHz,CDCl₃)δ:191.6,189.2,161.8,160.3,144.3,135.1,135.0,134.3(C-F,q,²J_C-F＝33.9Hz),131.6(C-F,q,³J_C-F＝3.3Hz),130.4,129.3,128.9,125.8,123.7,123.2(C-F,q,¹J_C-F＝271.2Hz),121.1(C-F,q,³J_C-F＝3.3Hz),61.6,13.5ppm.¹⁹F NMR(376MHz,CDCl₃)δ:-63.1ppm.HRMS(ESI)m/z:[M+Na]⁺calcd for C₂₀H₁₃F₃NaO₄ 397.0658；Found:397.0650。

Example 19

To a 15mL reaction tube were added 1d (70mg,0.2mmol), water (18mg,1mmol), ferric trichloride (16mg,0.1mmol) and anhydrous 1, 2-dichloroethane (DCE,1mL), the mixture was stirred at 80 ℃ under an air atmosphere for reaction for 15h, then cooled to room temperature, the reaction was stirred with silica gel, spun dry, and separated by silica gel column (petroleum ether/ethyl acetate ═ 10/1, v/v) to give product 2d (46mg, 68%) as a yellow solid. The characterization data for this compound are as follows: IR (KBr) v 2993,2954,1720,1688,1663,1595,1262,1211,1017,791,784,696,660cm^-1；¹H NMR(400MHz,CDCl₃)δ:7.98-8.00(m,2H),7.64-7.68(m,1H),7.60(d,J＝8.0Hz,1H),7.50-7.54(m,2H),6.83(dd,J₁＝8.0Hz,J₂＝2.0Hz,1H),6.62(d,J＝2.0Hz,1H),4.03(q,J＝7.2Hz,2H),3.81(s,3H),0.95(t,J＝7.2Hz,3H)ppm.¹³C NMR(150MHz,CDCl₃)δ:192.4,189.6,164.9,161.6,160.9,143.7,135.3,134.8,129.1,128.9,126.3,125.3,122.4,114.4,111.8,61.2,56.0,13.5ppm.HRMS(ESI)m/z:[M+Na]⁺calcd for C₂₀H₁₆NaO₅ 359.0890；Found:359.0868。

Example 20

1e (66mg,0.2mmol), water (18mg,1mmol), ferric trichloride (16mg,0.1mmol) and anhydrous 1, 2-dichloroethane (DCE,1mL) were added to a 15mL reaction tube, the mixture was stirred at 80 ℃ under an air atmosphere for reaction for 15h, then cooled to room temperature, the reaction was stirred with silica gel and dried, and the product was isolated by silica gel column separation (petroleum ether/ethyl acetate: 10/1, v/v) to give 2e (47mg, 73%) as a yellow solid. The characterization data for this compound are as follows: IR (KBr) v 3064,2984,1741,1659,1596,1582,1253,1124,1007,791,683,673,635,591cm^-1；¹H NMR(400MHz,CDCl₃)δ:7.99-8.01(m,2H),7.65-7.69(m,1H),7.51-7.55(m,3H),7.24(d,J＝7.2Hz,1H),6.89(s,1H),4.04(q,J＝7.2Hz,2H),2.33(s,3H),0.96(t,J＝7.2Hz,3H)ppm.¹³C NMR(150MHz,CDCl₃)δ:192.7,190.7,163.6,160.9,145.7,141.6,135.2,134.8,132.3,129.2,128.9,127.6,124.8,124.4,124.1,61.2,21.9,13.5ppm.HRMS(ESI)m/z:[M+Na]⁺calcd for C₂₀H₁₆NaO₄343.0941；Found:343.0929。

Example 21

1f (70mg,0.2mmol), water (18mg,1mmol), ferric trichloride (16mg,0.1mmol) and anhydrous 1, 2-dichloroethane (DCE,1mL) were added to a 15mL reaction tube, the mixture was stirred at 80 ℃ under an air atmosphere for reaction for 15h, then cooled to room temperature, the reaction was stirred with silica gel, spun dry, and separated by silica gel column (petroleum ether/ethyl acetate: 10/1, v/v) to give 2f (54mg, 79%) as a yellow solid product. The characterization data for this compound are as follows: IR (KBr) v 2982,2934,1728,1693, 1666,1580, 1239, 1214,1131,1020, 794,688, 663,618cm^-1；¹H NMR(600MHz,CDCl₃)δ:7.98(dd,J₁＝8.4Hz,J₂＝1.2Hz,2H),7.69(t,J＝7.8Hz,1H)，7.59(d，J＝7.8Hz，1H),7.54(t，J＝7.8Hz，2H),7.44(dd,J₁＝7.8Hz,J₂＝1.8Hz，1H),7.09(d,J＝1.8Hz,1H)，4.05(q，J＝7.2Hz,2H)，0.95(t,J＝7.2Hz,3H)ppm.¹³C NMR(150MHz,CDCl₃)δ:191.8,189.5，161.8，160.5,142.9，140.8,135.04,135.02,131.8,129.3,128.9,128.0，125.2,125.1,124.2，61.5,13.5ppm.HRMS(ESI)m/z:[M+Na]⁺calcd for C₁₉H₁₃ClNaO₄ 363.0395；Found:363.0394。

Example 22

A15 mL reaction tube was charged with 1g (79mg,0.2 mmo)l), water (18mg,1mmol), ferric trichloride (16mg,0.1mmol) and anhydrous 1, 2-dichloroethane (DCE,1mL), the mixture was stirred at 80 ℃ under an air atmosphere for reaction for 15h, then cooled to room temperature, the reaction system was spin-dried with silica gel, and separation on silica gel column (petroleum ether/ethyl acetate ═ 10/1, v/v) gave 2g (53mg, 69%) of the product as a yellow solid. The characterization data for this compound are as follows: IR (KBr) v 2924,1720,1697, 1658,1597,1328,1223,1140,1023,744,694,581cm^-1；¹H NMR(400MHz,CDCl₃)δ:8.07(dt,J₁＝8.4Hz,J₂＝1.6Hz,2H),7.74(dt,J₁＝8.4Hz,J₂＝1.6Hz,2H),7.62-7.67(m,3H),7.41-7.51(m，5H),7.11(dd,J₁＝6.0Hz,J₂＝1.2Hz,1H),4.10(q,J＝7.2Hz,2H),1.02(t,J＝7.2Hz,3H)ppm.¹³C NMR(100MHz,CDCl₃)δ:192.0,191.0,164.1,160.9,147.6,141.2,139.5,134.4,133.8,132.3,130.0,129.5,129.1,128.7,127.8,127.4,124.3,123.9,123.7,61.3,13.6ppm.HRMS(ESI)m/z:[M+Na]⁺calcd for C₂₅H₁₈NaO₄ 405.1097；Found:405.1082。

Example 23

To a 15mL reaction tube were added 1h (66mg,0.2mmol), water (18mg,1mmol), ferric trichloride (16mg,0.1mmol) and anhydrous 1, 2-dichloroethane (DCE,1mL), the mixture was stirred at 80 ℃ under an air atmosphere for reaction for 15h, then cooled to room temperature, the reaction was stirred with silica gel and dried, and the product was isolated by silica gel column separation (petroleum ether/ethyl acetate ═ 10/1, v/v) for 2h (49mg, 77%) as a yellow solid. The characterization data for this compound are as follows: IR (KBr) v 2924,1718,1696,1667,1602,1332,1252,1225,1177, 1022,751,728, 696,578cm^-1；¹H NMR(400MHz,CDCl₃)δ:7.89(d，J＝8.4Hz,2H),7.64(dd，J₁＝6.8Hz,J₂＝1.6Hz,1H),7.39-7.47(m,2H),7.32(d,J＝8.0Hz,2H),7.06-7.08(m,1H),4.07(q,J＝7.2Hz,2H)，2.44(s,3H),0.99(t,J＝7.2Hz，3H)ppm.¹³C NMR(100MHz,CDCl₃)δ:192.0,191.1,164.3，160.9，146.1，141.3,134.3，132.7,132.2,130.0，129.9,129.0,124.2,123.69,123.65,61.2,21.9,13.6ppm.HRMS(ESI)m/z:[M+Na]⁺calcd for C₂₀H₁₆NaO₄ 343.0941；Found:343.0936。

Example 24

1i (69mg,0.2mmol), water (18mg,1mmol), ferric trichloride (16mg,0.1mmol) and anhydrous 1, 2-dichloroethane (DCE,1mL) were added to a 15mL reaction tube, the mixture was stirred at 80 ℃ under an air atmosphere for reaction for 15h, then cooled to room temperature, the reaction system was stirred with silica gel and dried by spin drying, and silica gel column separation (petroleum ether/ethyl acetate ═ 10/1, v/v) gave 2i (52mg, 78%) as a yellow solid product. The characterization data for this compound are as follows: IR (KBr) v 2969,2936,1720,1698,1601,1587,1327,1256,1220,1140,1014,764,699,582cm^-1；¹H NMR(400MHz,CDCl₃)δ:7.91(d,J＝8.0Hz,2H),7.64-7.66(m,1H),7.39-7.47(m,2H),7.34(d,J＝8.0Hz,2H),7.07-7.08(m,1H),4.07(q,J＝7.2Hz,2H),2.74(q,J＝7.6Hz,2H),1.27(t,J＝7.6Hz,3H),0.98(t,J＝7.2Hz,3H)ppm.¹³C NMR(100MHz,CDCl₃)δ:192.1,191.1,164.3,160.9,152.2,141.3,134.3,132.9,132.2,130.0,129.1,128.7,124.2,123.70,123.66,61.2,29.2,15.1,13.6ppm.HRMS(ESI)m/z:[M+Na]⁺calcd for C₂₁H₁₈NaO₄ 357.1097；Found:357.1082。

Example 25

1j (75mg,0.2mmol), water (18mg,1mmol), ferric trichloride (16mg,0.1mmol) and anhydrous 1, 2-dichloroethane (DCE,1mL) were added to a 15mL reaction tube, the mixture was stirred at 80 ℃ under an air atmosphere for reaction for 15h, then cooled to room temperature, the reaction was stirred with silica gel and dried by spin drying, and the product 2j (54mg, 75%) was obtained as a yellow solid by silica gel column separation (petroleum ether/ethyl acetate: 10/1, v/v). Characterization of the CompoundThe data are as follows: IR (KBr) v 2961,2869,1721,1700,1661,1601,1330,1255,1226,1109,1023,1011,752,709,694cm^-1；¹H NMR(400MHz，CDCl₃)δ:7.92(dd，J₁＝6.8Hz,J₂＝2.0Hz，2H)，7.65(d，J＝6.4Hz，1H),7.52(dd,J₁＝6.8Hz,J₂＝2.0Hz，2H)，7.39-7.47(m,2H)，7.07-7.09(m，1H),4.07(q,J＝7.2Hz,2H),1.34(s,9H)，0.96(t，J＝7.2Hz，3H)ppm.¹³C NMR(100MHz,CDCl₃)δ:192.1，191.1,164.2，160.9，159.0,141.3,134.3,132.6,132.2,130.0,128.9,126.1,124.2,123.73,123.70,61.2,35.4,31.0,13.5ppm.HRMS(ESI)m/z:[M+Na]⁺calcd for C₂₃H₂₂NaO₄ 385.1410；Found:385.1402。

Example 26

1k (67mg,0.2mmol), water (18mg,1mmol), ferric trichloride (16mg,0.1mmol) and anhydrous 1, 2-dichloroethane (DCE,1mL) were added to a 15mL reaction tube, the mixture was stirred at 80 ℃ under an air atmosphere for reaction for 15h, then cooled to room temperature, the reaction was stirred with silica gel and dried, and the product was isolated by silica gel column separation (petroleum ether/ethyl acetate: 10/1, v/v) to give 2k (50mg, 77%) as a yellow solid. The characterization data for this compound are as follows: IR (KBr) v 2981,2905,1732,1670,1593,1335,1254,1221,1153,1128,1006,847,755,738,611cm^-1；¹H NMR(600MHz,CDCl₃)δ:8.03(dd,J₁＝7.8Hz,J₂＝5.4Hz,2H),7.66(d,J＝7.2Hz,1H),7.47(d,J＝7.2Hz,1H),7.43(t,J＝7.2Hz,1H),7.20(t,J＝8.4Hz,2H),7.06(d,J＝7.2Hz,1H),4.10(q,J＝7.2Hz,2H),1.03(t,J＝7.2Hz,3H)ppm.¹³C NMR(150MHz,CDCl₃)δ:190.9,190.8,166.8(C-F,d,¹J_C-F＝255.9Hz),163.7,160.8,141.0,134.4,132.4,131.659(C-F,d,³J_C-F＝9.9Hz),131.655,129.9,124.4,123.9,123.6,116.5(C-F,d,²J_C-F＝22.95Hz),61.3,13.6ppm.¹⁹F NMR(565MHz,CDCl₃)δ:-101.4ppm.HRMS(ESI)m/z:[M+Na]⁺calcd for C₁₉H₁₃FNaO₄ 347.0690；Found:347.0687。

Example 27

To a 15mL reaction tube were added 1l (70mg,0.2mmol), water (18mg,1mmol), ferric trichloride (16mg,0.1mmol) and anhydrous 1, 2-dichloroethane (DCE,1mL), the mixture was stirred at 80 ℃ under an air atmosphere for reaction for 15h, then cooled to room temperature, the reaction was stirred with silica gel, spun dry, and separated by silica gel column (petroleum ether/ethyl acetate ═ 10/1, v/v) to give 2l (56mg, 82%) of the product as a yellow solid. The characterization data for this compound are as follows: IR (KBr) v 2976,2932,1737,1658,1579,1340,1255, 1119,1081, 1006,848,754,739,587cm^-1；¹H NMR(600MHz,CDCl₃)δ:7.94(d，J＝7.8Hz,2H),7.66(d,J＝7.2Hz,1H)，7.46-7.51(m，3H)，7.43(t，J＝7.2Hz，1H),7.05(d,J＝7.2Hz,1H)，4.10(q，J＝7.2Hz,2H),1.04(t,J＝7.2Hz,3H)ppm.¹³C NMR(150MHz,CDCl₃)δ:191.3，190.7，163.6,160.8,141.5,140.9，134.4,133.5，132.4，130.2，129.9,129.6,124.4,124.0,123.6,61.4,13.7ppm.HRMS(ESI)m/z:[M+Na]⁺calcd for C₁₉H₁₃ClNaO₄363.0395；Found:363.0373。

Example 28

To a 15mL reaction tube, 1m (77mg,0.2mmol), water (18mg,1mmol), ferric trichloride (16mg,0.1mmol) and anhydrous 1, 2-dichloroethane (DCE,1mL) were added, the mixture was stirred at 80 ℃ under an air atmosphere for reaction for 15 hours, then cooled to room temperature, the reaction system was stirred with silica gel and dried by spin drying, and silica gel column separation (petroleum ether/ethyl acetate ═ 10/1, v/v) gave 2m (54mg, 73%) as a yellow solid product. The characterization data for this compound are as follows: IR (KBr) v 2984,1737,1665,1326,1164,1109,1063,1007,856,752,686,597cm^-1；¹H NMR(400MHz,CDCl₃)δ:8.11(d,J＝8.0Hz,2H),7.80(d,J＝8.4Hz,2H),7.66-7.68(m,1H),7.47-7.51(m,1H),7.44(td,J₁＝7.6Hz,J₂＝1.2Hz,1H),7.06(d,J＝6.8Hz,1H),4.09(q,J＝7.2Hz,2H),1.03(t,J＝7.2Hz，3H)ppm.¹³C NMR(150MHz，CDCl₃)δ:191.7,190.5,163.3,160.8,140.7,137.7,135.9(C-F,q,²J_C-F＝32.7Hz),134.5,132.6,129.8,129.1,126.3(C-F，q，³J_C-F＝3.3Hz),124.6,124.4，123.5,123.3(C-F,q,¹J_C-F＝271.35Hz),61.5,13.6ppm.¹⁹F NMR(376MHz，CDCl₃)δ:-63.3ppm.HRMS(ESI)m/z:[M+Na]⁺calcd for C₂₀H₁₃F₃NaO₄ 397.0658；Found:397.0646。

Example 29

1n (66mg,0.2mmol), water (18mg,1mmol), ferric trichloride (16mg,0.1mmol) and anhydrous 1, 2-dichloroethane (DCE,1mL) were charged into a 15mL reaction tube, the mixture was stirred at 80 ℃ under an air atmosphere for reaction for 15h, then cooled to room temperature, the reaction system was stirred with silica gel and dried by spin drying, and the product 2n (48mg, 75%) was obtained as a yellow solid by silica gel column separation (petroleum ether/ethyl acetate ═ 10/1, v/v). The characterization data for this compound are as follows: IR (KBr) v 2991,1741,1663,1580,1263,1129,1018,753,729,700,685,638cm^-1；¹H NMR(400MHz,CDCl₃)δ:7.80(s,1H),7.77(d,J＝8.0Hz,1H),7.64-7.66(m,1H),7.38-7.48(m,4H),7.08(dd,J₁＝6.4Hz,J₂＝0.8Hz,1H),4.07(q,J＝7.2Hz,2H),2.42(s,3H),0.99(t,J＝7.2Hz,3H)ppm.¹³C NMR(100MHz，CDCl₃)δ:192.6，191.1,164.2,160.9,141.3,139.2,135.7,135.2,134.4，132.2，130.0,129.1,129.0,126.3,124.3,123.8,123.7,61.2,21.3,13.6ppm.HRMS(ESI)m/z:[M+Na]⁺calcd for C₂₀H₁₆NaO₄ 343.0941；Found:343.0938。

Example 30

To a 15mL reaction tube, 1o (67mg,0.2mmol), water (18mg,1mmol), ferric trichloride (16mg,0.1mmol) and anhydrous 1, 2-dichloroethane (DCE,1mL) were added, the mixture was stirred at 80 ℃ under an air atmosphere for reaction for 15h, then cooled to room temperature, the reaction system was stirred with silica gel and dried by spin drying, and the product was isolated by silica gel column separation (petroleum ether/ethyl acetate ═ 10/1, v/v) to give 2o (52mg, 80%) as a yellow solid. The characterization data for this compound are as follows: IR (KBr) v 3062,2980,1745,1672,1586,1262,1224,1124,1016,890,753,731,699,639cm^-1；¹H NMR(400MHz,CDCl₃)δ:7.70-7.75(m,2H),7.65-7.67(m，1H),7.42-7.53(m,3H),7.37(tdd,J₁＝8.0Hz，J₂＝2.8Hz,J₃＝0.8Hz,1H),7.07(d，J＝6.8Hz，1H),4.10(q，J＝7.2Hz，2H),1.02(t,J＝7.2Hz,3H)ppm.¹³C NMR(100MHz,CDCl₃)δ:191.3(C-F,d,⁴J_C-F＝2.9Hz),190.7,163.4,163.1(C-F,t,¹J_C-F＝247.8Hz),160.7,140.9,137.2(C-F,d,³J_C-F＝6.5Hz),134.5,132.4,131.0(C-F,d,³J_C-F＝7.9Hz)，129.9,124.9(C-F，d，⁴J_C-F＝2.9Hz)，124.5,124.1,123.6,121.9(C-F,d,²J_C-F＝20.9Hz),115.1(C-F,d，²J_C-F＝22.4Hz),61.4,13.6ppm.¹⁹F NMR(376MHz,CDCl₃)δ:-110.5ppm.HRMS(ESI)m/z:[M+Na]⁺calcd for C₁₉H₁₃FNaO₄ 347.0690；Found:347.0682。

Example 31

Adding 1p (70mg,0.2mmol), water (18mg,1mmol), ferric trichloride (16mg,0.1mmol) and anhydrous 1, 2-dichloroethane (DCE,1mL) into a 15mL reaction tube, stirring the mixture at 80 ℃ for reaction for 15h under an air atmosphere, cooling to room temperature, stirring the reaction system with silica gel, spin-drying, and separating with silica gel column (petroleum ether/ethyl acetate)Ester 10/1, v/v) gave the product 2p as a yellow solid (52mg, 76%). The characterization data for this compound are as follows: IR (KBr) v 3070,2979,2900,1743,1659,1573,1333,1242,1125,1114,1018,892,758,714,639cm^-1；¹H NMR(400MHz,CDCl₃)δ:7.98-7.99(m,1H),7.85(dt,J₁＝7.6Hz,J₂＝1.2Hz,1H),7.66(dd,J₁＝6.8Hz,J₂＝1.6Hz,1H),7.64(ddd,J₁＝8.0Hz,J₂＝2.0Hz,J₃＝0.8Hz,1H),7.42-7.50(m,3H),7.06(dd,J₁＝6.4Hz,J₂＝0.8Hz,1H),4.10(q,J＝7.2Hz,2H),1.04(t,J＝7.2Hz,3H)ppm.¹³C NMR(100MHz,CDCl₃)δ:191.3,190.6,163.3,160.8,140.8,136.7,135.7,134.7,134.5,132.5,130.5,129.9,128.5,127.0,124.5,124.2,123.6,61.5,13.7ppm.HRMS(ESI)m/z:[M+Na]⁺calcd for C₁₉H₁₃ClNaO₄ 363.0395；Found:363.0400。

Example 32

To a 15mL reaction tube, 1q (67mg,0.2mmol), water (18mg,1mmol), ferric trichloride (16mg,0.1mmol) and anhydrous 1, 2-dichloroethane (DCE,1mL) were added, the mixture was stirred at 80 ℃ under an air atmosphere for reaction for 15 hours, then cooled to room temperature, the reaction system was stirred with silica gel and dried by spin drying, and silica gel column separation (petroleum ether/ethyl acetate ═ 10/1, v/v) gave 2q (51mg, 79%) as a yellow solid product. The characterization data for this compound are as follows: IR (KBr) v 2977,1734,1658,1608,1454,1271,1121,1003,865,761,732,623cm^-1；¹H NMR(400MHz,CDCl₃)δ:8.08(td,J₁＝8.0Hz,J₂＝2.0Hz,1H),7.62-7.67(m,2H),7.41-7.48(m,2H),7.33-7.37(m,1H),7.15(ddd,J₁＝10.8Hz,J₂＝8.4Hz,J₃＝0.8Hz,1H),7.09(dd,J₁＝6.0Hz,J₂＝2.0Hz,1H),4.10(q,J＝7.2Hz,2H),1.05(t,J＝7.2Hz,3H)ppm.¹³C NMR(100MHz,CDCl₃)δ:191.1,189.1,165.3,162.4(C-F,d,¹J_C-F＝257.8Hz),160.9,140.8(C-F,d,⁴J_C-F＝1.4Hz),136.5(C-F,d,²J_C-F＝8.6Hz),134.2,132.1,130.6,130.1,124.9(C-F,d,³J_C-F＝3.6Hz),124.3,124.2,123.2,122.4(C-F,d,³J_C-F＝3.6Hz),117.0(C-F,d,²J_C-F＝21.7Hz),61.2,13.7ppm.¹⁹F NMR(376MHz,CDCl₃)δ:-109.5ppm.HRMS(ESI)m/z:[M+Na]⁺calcd for C₁₉H₁₃FNaO₄ 347.0690；Found:347.0682。

Example 33

To a 15mL reaction tube, 1r (69mg,0.2mmol), water (18mg,1mmol), ferric trichloride (16mg,0.1mmol) and anhydrous 1, 2-dichloroethane (DCE,1mL) were added, and the mixture was stirred at 80 ℃ under an air atmosphere for reaction for 15 hours, then cooled to room temperature, the reaction system was stirred with silica gel, dried by spinning, and separated by silica gel column (petroleum ether/ethyl acetate ═ 10/1, v/v) to give 2r (47mg, 71%) as a yellow solid product. The characterization data for this compound are as follows: IR (KBr) v 2980,2900,1750,1735,1690,1593,1574,1228,1212,1001,763,728cm^-1；¹H NMR(400MHz,CDCl₃)δ:7.70(d,J＝7.6Hz,1H),7.62(d,J＝7.2Hz,1H),7.49(td,J₁＝7.6Hz,J₂＝1.2Hz,1H),7.38-7.42(m,1H),7.25(t,J＝7.6Hz,1H),7.06(d，J＝7.6Hz，2H)，3.78(q，J＝7.2Hz,2H),2.31(s,6H),1.09(t,J＝7.2Hz,3H)ppm.¹³C NMR(150MHz,CDCl₃)δ:196.8,192.7,162.0,151.1,141.5,138.3,136.2,134.6,131.4,130.61,130.57,129.5,128.2,125.0,124.5，61.9,20.0,13.7ppm.HRMS(ESI)m/z:[M+Na]⁺calcd for C₂₁H₁₈NaO₄ 357.1097；Found:357.1086。

The foregoing embodiments illustrate the principles, principal features and advantages of the invention, and it will be understood by those skilled in the art that the invention is not limited to the foregoing embodiments, which are merely illustrative of the principles of the invention, and that various changes and modifications may be made therein without departing from the scope of the principles of the invention.