阅读说明：本技术 氟二硝基乙氨基联呋咱化合物及其合成方法 (Fluorine dinitro ethylamino bifurazan compound and synthetic method thereof ) 是由 陆国平 谢舒丰 蔡春 郭涛 于 2018-08-03 设计创作，主要内容包括：本发明公开了一种氟二硝基乙氨基联呋咱化合物及其合成方法。所述化合物以3,3’-二氨基-4,4’-联呋咱为原料在离子液体中与氟二硝基乙醇缩合,得到目标化合物3,3’-二(氟二硝基乙基氨基)-4,4’-联呋咱。本发明所述合成路线简单易行,可以为氟二硝基乙氨基含能衍生物的合成提供借鉴；目标化合物性能优良,可以应用于推进剂或是炸药领域,具有高的机械和热敏感性,同时具有良好的爆轰性能；该合成反应无需使用其他试剂且离子液体可以回收利用,对于环境影响小。(The invention discloses a fluorine dinitro ethylamino bifurazan compound and a synthesis method thereof. The compound is prepared by condensing 3,3 '-diamino-4, 4' -bifurazan serving as a raw material with fluoro dinitroethanol in ionic liquid to obtain a target compound 3,3 '-di (fluoro dinitroethylamino) -4, 4' -bifurazan. The synthetic route is simple and easy to implement, and can provide reference for the synthesis of the fluorine dinitroethylamino energetic derivative; the target compound has excellent performance, can be applied to the field of propellants or explosives, has high mechanical and thermal sensitivity, and simultaneously has good detonation performance; the synthesis reaction does not need to use other reagents, and the ionic liquid can be recycled, so that the environmental impact is small.)

1. The fluorine dinitroethylamino bifurazan compound is characterized by having the following structure:

2. a synthesis method of a fluoro-dinitro-ethylamino-bifurazan compound is characterized by comprising the step of carrying out condensation reaction on 3,3 '-diamino-4, 4' -bifurazan and fluoro-dinitroethanol in ionic liquid to prepare a target compound,

3. the method of claim 2, wherein the ionic liquid is [ bmpyr [ ]][CF₃SO₃]、[bp][CF₃SO₃]、[BSO₃Mlm][CF₃SO₃]、BPMBF₄And [ bmim][PF₆]Any one of them.

4. The process of claim 2, wherein the reaction temperature is from 80 to 120 ℃.

5. The process of claim 2 wherein the molar ratio of 3,3 '-diamino-4, 4' -bifurazan to fluoro dinitroethanol is from 2 to 3.

Technical Field

The invention belongs to the field of synthesis of energetic materials, relates to a furazan compound and a synthesis method thereof, and particularly relates to a fluorine dinitro ethylamino furazan compound and a synthesis method thereof.

Background

The polynitrofurazan energetic compound is a compound combining a nitro functional group and a furazan ring, has the characteristics of high density, high enthalpy of formation, high detonation velocity, detonation pressure, good oxygen balance and the like, and has become an important research direction in the field of energetic materials.

The monofurazan compound contains only one furazan ring in energetic skeleton, and the basic material in the monofurazan compound is 3, 4-diamino furazan (DAF), the active amino group of which can be substituted by NO₂，N₃Modifying with isoenergetic group to synthesizeA variety of high-energy group substituted monofurazan energetic compounds. The main methods for modifying the amino group on DAF are: (1) performing Mannich condensation reaction on DAF and trinitroethanol serving as raw materials in 1mol/L hydrochloric acid solution to obtain a target product (Propellants, Explos. Pyrotech.2014,39,641.); (2) replacing the hydrogen chloride solution in the step (1) with an iron chloride solution to obtain a target product (J.Mater.chem.A 2015,3, 8156.); (3) DAF and fluoro-dinitroethanol are used as raw materials and react in potassium carbonate solution to obtain a target compound (Lawrence Livemore National Laboratory, 2013.). In the methods, water is used as a solvent, and the required synthetic bifurazan compound has poor solubility, so the method cannot be applied.

Disclosure of Invention

The invention aims to provide a furazan compound and a synthesis method thereof. The synthetic product is applied to the field of propellants or explosives, has better performance, can endow a compound with higher density and energy due to a multi-nitro structure, and has wide application prospect.

The purpose of the invention is realized as follows: a fluoro-dinitroethylamino-furazan compound is named as 3,3 '-di (fluoro-dinitroethylamino) -4, 4' -furazan and has the following structure:

the method for synthesizing the 3,3 '-bis (fluoro-dinitroethylamino) -4, 4' -furazan comprises the following steps:

3,3 '-diamino-4, 4' -bifurazan and fluoro dinitroethanol are subjected to condensation reaction in ionic liquid to prepare a target compound,

further, in the step, the ionic liquid is [ bmpyrr][CF₃SO₃]、[bp][CF₃SO₃]、[BSO₃Mlm][CF₃SO₃]、BPMBF₄And [ bmim][PF₆]Any one of them.

Further, in the step, the reaction temperature is 80-120 ℃.

Further, in the step, the molar ratio of the 3,3 '-diamino-4, 4' -bifurazan to the fluorine dinitroethanol is 2-3.

Compared with the prior art, the invention has the advantages that:

(1) the prepared furazan compound is rich in nitrogen and oxygen, and has the excellent performances of high energy density, aromaticity, high enthalpy of formation and the like.

(2) The prepared furazan compound has a polynitro structure, and can endow the compound with higher density and energy.

(3) The synthesis method does not need to use other reagents, and the ionic liquid has certain catalytic activity, can be recycled and has little influence on the environment.

Detailed Description

The present invention will be further described with reference to specific examples;