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A melting and casting explosive 3,4,5-trifluoro-2,6-dinitroaniline and its preparation method and application

A technology of dinitroaniline and casting explosives, which is applied in the preparation of amino compounds, chemical instruments and methods, and the preparation of organic compounds, and can solve the problems of ammunition sensitivity, fragility and transportation impact, workers' health and environmental hazards, explosives Oil leakage and other problems, to achieve the effect of superior performance, safe raw materials, and easy recrystallization

Active Publication Date: 2021-11-23
XINYANG NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, not only the waste discharged during the production process of TNT is harmful to the health of workers and the environment, but also the phenomenon of oil leakage, shrinkage, cavity, brittleness and expansion in TNT explosives will affect the sensitivity, vulnerability and transportation of ammunition. With the development of modern weapons, TNT can no longer meet the requirements of the current standard of insensitive ammunition

Method used

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  • A melting and casting explosive 3,4,5-trifluoro-2,6-dinitroaniline and its preparation method and application
  • A melting and casting explosive 3,4,5-trifluoro-2,6-dinitroaniline and its preparation method and application
  • A melting and casting explosive 3,4,5-trifluoro-2,6-dinitroaniline and its preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Preparation of starting material 1:

[0025] With an ice-water bath and magnetic stirring, after dissolving 14.7 grams (0.1mol) of trifluoroaniline with 150 milliliters of acetonitrile, add 11.11 grams (0.11mol) of triethylamine, and then slowly add an acylating agent (such as acetyl chloride, Acetic anhydride, methyl chloroformate or ethyl chloroformate) (0.11mol), after the dropwise addition, the stirring was continued at room temperature until the reaction was complete (TLC detection).

[0026] After the reaction was complete, the reaction system was slowly poured into ice water, a large amount of precipitates were precipitated, and the raw material 1 was obtained by filtration, and the yield was quantitative.

[0027] When the acylating reagent is acetyl chloride or acetic anhydride, the raw material 1 shown in formula II is obtained, where R=CH 3 CO; when the acylating reagent is methyl chloroformate, the raw material 1 shown in formula II is obtained, where R=CH ...

Embodiment 2

[0029] A kind of preparation of melting and casting explosive 3,4,5-trifluoro-2,6-dinitroaniline (ZXC-17), comprising the following steps:

[0030] Accurately weigh 11.11 grams of potassium nitrate (110mmol, 2.2eq), and slowly add it to 50 ml of concentrated sulfuric acid (concentration of sulfuric acid is 95-98%) under ice-water bath and magnetic stirring conditions, and continue to stir until the potassium nitrate is completely Dissolve, and then slowly add raw material 1 (50mmol, 1.0eq). After the addition, the system was slowly raised to room temperature and continued to stir until the reaction was complete (TLC detection).

[0031] After the reaction was complete, the reaction mixture was slowly poured into ice water, a large amount of precipitates were precipitated, filtered, washed with water, and dried to obtain an orange-yellow solid with a yield of 87.92%; the H NMR spectrum of the product was 1 H NMR (600MHz, DMSO-d 6 ,TMS,ppm), δ=8.63(s,2H); 13 C NMR (125MHz, DMS...

Embodiment 3

[0033] A kind of preparation of melting and casting explosive 3,4,5-trifluoro-2,6-dinitroaniline (ZXC-17), comprising the following steps:

[0034]Accurately weigh 8.8 grams of ammonium nitrate (110mmol, 2.2eq), and slowly add it to 50 milliliters of concentrated sulfuric acid (concentration of sulfuric acid is 95-98%) under conditions of ice-water bath and magnetic stirring, and continue to stir until the potassium nitrate is completely Dissolve, and then slowly add raw material 1 (50mmol, 1.0eq). After the addition, the system was slowly raised to room temperature and continued to stir until the reaction was complete (TLC detection).

[0035] After the reaction was complete, the reaction mixture was slowly poured into ice water, a large amount of precipitates were precipitated, filtered, washed with water, and dried to obtain an orange-yellow solid with a yield of 86.54%.

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Abstract

The structural formula of 3,4,5-trifluoro-2,6-dinitroaniline of the present invention and its preparation method include the following steps: raw material 1 is nitrated to obtain the target compound 3,4,5-trifluoro-2,6- Dinitroaniline (ZXC‑17). Compared with TNT and 2,3,4-trifluoro-1,5-dinitrobenzene, 3,4,5-trifluoro-2,6-dinitroaniline has better detonation performance, single crystal density Higher, up to 1.972g / cm ‑3 , The impact sensitivity also reaches 62J, and it is a high-energy explosive with a melting point of 92.20 ° C. It is very suitable as a casting explosive. The synthesis method is very simple, the yield is high, and it is easy to industrialized production; the compound of the present invention is insoluble in water, friendly to the environment, and easy to recrystallize. Therefore, its potential industrialization value is higher.

Description

technical field [0001] The invention belongs to the technical field of compound preparation, and in particular relates to a melting and casting explosive 3,4,5-trifluoro-2,6-dinitroaniline and a preparation method and application thereof. Background technique [0002] With the advancement of science and technology, modern weapons and their defense capabilities are changing with each passing day. Today, the explosive power of single-substance explosives is becoming more and more powerful and more sensitive. Single-substance explosives are difficult to meet the needs of national defense and civilian blasting. Therefore, looking for high-energy insensitive explosives has always been a The focus of people's research, however, most high-energy explosives have high mechanical sensitivity and poor stability, and are very unsafe when used alone. For this reason, people use high-energy explosives to mix with additives for reducing sensitivity and modification. Fusion-cast explosives ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07C211/52C07C209/76C07C209/62C06B25/04
Inventor 张行程姚磊胡文祥
Owner XINYANG NORMAL UNIVERSITY
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