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2-Trinitromethylpyrazine compound

A technology of trinitromethylpyrazine and compounds, which is applied in the directions of nitrated acyclic/alicyclic/heterocyclic amine explosive compositions, organic chemistry, etc., can solve the problems of low energy, low oxygen balance, low density and the like

Active Publication Date: 2020-07-17
XIAN MODERN CHEM RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

But the compound has lower density, lower oxygen balance, and less energy

Method used

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  • 2-Trinitromethylpyrazine compound

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] (1) Synthesis of 2-formaldehyde oxime pyrazine

[0022] Add 0.77g (11mmol) of hydroxylamine hydrochloride, 1.65g (11mmol) of sodium acetate and 60ml of ethanol into a 250ml three-necked flask, add 1.08g (10mmol) of 2-formaldehyde pyrazine with stirring, raise the temperature to 60°C, and react for 2h. After the reaction was completed, cool to room temperature, filter, and evaporate the filtrate to dryness. The obtained solid was washed with 100 ml of water, extracted 3 times with 50 ml of ethyl acetate, and the organic phase was dried with anhydrous sodium sulfate, filtered, and the filtrate was evaporated to dryness to obtain 1.12 g of a brown solid. was 91.1%.

[0023] Structure Identification:

[0024] NMR spectrum: 1 H NMR (600MHz, DMSO): δ12.04(s, 1H), 9.00(d, 1H), 8.65(dd, 1H), 8.61(d, 1H), 8.14(s, 1H); 13 C NMR (151MHz): δ147.76, 146.94, 144.31, 141.75

[0025] Elemental analysis: Molecular formula C 3 h 5 N 3 o

[0026] Theoretical values: C 48.78, H 4.0...

Embodiment 2

[0040] (1) Synthesis of 2-formaldehyde oxime pyrazine

[0041] Add 1.40g (20mmol) of hydroxylamine hydrochloride, 3.00g (20mmol) of sodium acetate and 60ml of ethanol into a 250ml three-necked flask, add 1.08g (10mmol) of 2-formaldehyde pyrazine under stirring, raise the temperature to 50°C, and react for 2h. After the reaction was completed, cool to room temperature, filter, and evaporate the filtrate to dryness. The obtained solid was washed with 100 ml of water, extracted 3 times with 50 ml of ethyl acetate, and the organic phase was dried with anhydrous sodium sulfate, filtered, and the filtrate was evaporated to dryness to obtain 1.19 g of a brown solid. was 96.8%.

[0042] Structure Identification:

[0043] NMR spectrum: 1 H NMR (600MHz, DMSO): δ12.04(s, 1H), 9.00(d, 1H), 8.65(dd, 1H), 8.61(d, 1H), 8.14(s, 1H); 13 C NMR (151MHz): δ147.76, 146.94, 144.31, 141.75

[0044] Elemental analysis: Molecular formula C 3 h 5 N 3 o

[0045] Theoretical values: C 48.78, H 4....

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Abstract

The invention discloses a 2-trinitromethylpyrazine compound, which is of a structural formula as shown by a formula (I) as shown in the following descriptions. The 2-trinitromethylpyrazine compound ismainly used in the field of explosives.

Description

technical field [0001] The invention relates to an energetic material, in particular to a pyrazine compound. Background technique [0002] The energy and stability of traditional energetic materials are opposite, so looking for compounds with higher energy, lower sensitivity and better thermal stability has become the development direction of the energetic field. In recent years, nitrogen-heterocyclic energetic materials with such characteristics have attracted people's attention, and azine compounds are one of them. The basic skeleton of oxazine compounds is an aza aromatic six-membered ring. On the one hand, the aromaticity makes the whole molecule more stable, so it has lower sensitivity, is less sensitive to friction, impact and sparks, and is safer to use; on the other hand, The replacement of the CH group in the benzene ring by the N atom makes the system have a greater enthalpy of formation, a higher heat of combustion, and an easier oxygen balance, so that it will h...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07D241/12C06B25/34
CPCC06B25/34C07D241/12
Inventor 张义迎李亚南陈涛庞思平孙成辉
Owner XIAN MODERN CHEM RES INST
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