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1, 4-dinitro oxymethyl-3, 6-dinitro parazole [4, 3-c] pyrazole compound

A technology of dinitropyrazole and dinitoxymethyl, applied in the field of energetic materials, can solve the problems of low energy, low compound density and the like

Inactive Publication Date: 2015-06-10
XIAN MODERN CHEM RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the compound is less dense and less energetic

Method used

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  • 1, 4-dinitro oxymethyl-3, 6-dinitro parazole [4, 3-c] pyrazole compound
  • 1, 4-dinitro oxymethyl-3, 6-dinitro parazole [4, 3-c] pyrazole compound
  • 1, 4-dinitro oxymethyl-3, 6-dinitro parazole [4, 3-c] pyrazole compound

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Embodiment 1

[0020] (1) Synthesis of 1,4-Dihydroxymethyl-3,6-dinitropyrazole[4,3-c]pyrazole

[0021] Under stirring, 0.5g (2.53mmol) of 3,6-dinitropyrazole[4,3-c]pyrazole and 20.0mL of ethyl acetate were added to 15.0mL of 10% (mass) sulfuric acid aqueous solution. Control the temperature below 5℃, add 1.64g of 37%-40% (mass) formaldehyde aqueous solution dropwise, after the addition is complete, heat up to 20℃ and react for 20h, the reaction solution is extracted with ethyl acetate (25.0mL×3), anhydrous The extract was dried over magnesium sulfate, the ethyl acetate was distilled off under reduced pressure, and then dried to obtain 0.394 g of 1,4-dimethylol-3,6-dinitropyrazole [4,3-c] pyrazole. The yield was 60.4%.

[0022] Structure Identification:

[0023] Infrared spectrum: IR(KBr,cm -1 ),υ: 3537(-OH),2991,2925(-CH 2 ),1532,1393,1365(-NO 2 ),1298,1181,1081 (pyrazolopyrazole ring skeleton)

[0024] NMR spectroscopy: 1 HNMR(DMSO-d 6 ,500MHz),δ:5.832~5.845(d,4H,2CH 2 ), 7.387~7.417(t,2H,2OH); 1...

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Abstract

The invention discloses a 1, 4-dinitro oxymethyl-3, 6-dinitro parazole [4, 3-c] pyrazole compound. The structure formula is shown in formula (I). The compound is used in the explosive field.

Description

Technical field [0001] The invention relates to an energetic material, in particular to a 1,4-dinitrooxymethyl-3,6-dinitropyrazole [4,3-c] pyrazole compound. Background technique [0002] Multi-nitrogen energetic compounds are a class of energetic materials with unique properties, which have shown good application prospects in explosives, propellants and other fields. Pyrazolopyrazole-based multi-nitrogen energetic compounds have the characteristics of high density, large positive heat, and good thermal stability due to their compact structure, which has become one of the current research fields of energetic materials. The molecular structure of this type of compound contains a large number of CN, C=N, NN and N=N bonds, which release a large amount of nitrogen during decomposition, produce higher energy, and are not sensitive to friction, electric spark and other stimuli, so it can be used for high-energy low-sensitivity explosives , Gas generating agents, burning rate modifiers...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07D487/04C06B25/34
Inventor 李亚南王伯周舒远杰张生勇蔚涛李祥志
Owner XIAN MODERN CHEM RES INST
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