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1,4‑Dihydroxy‑3,6‑Dinitropyrazolo[4,3‑c]pyrazole compounds

A technology of dinitropyrazole and compound, which is applied in the directions of nitrated acyclic/alicyclic/heterocyclic amine explosive composition, organic chemistry, etc., can solve the problems of low energy and low compound density, etc.

Inactive Publication Date: 2017-04-12
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‑Dihydroxy‑3,6‑Dinitropyrazolo[4,3‑c]pyrazole compounds
  • 1,4‑Dihydroxy‑3,6‑Dinitropyrazolo[4,3‑c]pyrazole compounds
  • 1,4‑Dihydroxy‑3,6‑Dinitropyrazolo[4,3‑c]pyrazole compounds

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Embodiment 1

[0020] (1) Synthesis of 3,6-dinitropyrazolo[4,3-c]pyrazole bis-ammonium salt

[0021] Under stirring, sequentially add 1.87g (9.44mmol) 3,6-dinitropyrazolo[4,3-c]pyrazole, 45.0mL methanol, and 8.0mL distilled water into the flask, and dropwise add 2.5mL 25%~ After the addition of 28% (mass) ammonia solution, the temperature was raised to 50°C for 6 hours, filtered, washed, and dried to obtain 3,6-dinitropyrazol[4,3-c]pyrazole bis-ammonium salt 1.90 g, the yield is 86.7%.

[0022] Structure Identification:

[0023] Infrared Spectrum: IR(KBr,cm -1 ), υ: 3141, 3.68 (-NH 4 + ), 1563, 1403, 1377 (-NO 2 ), 1292, 1175, 1042 (pyrazolopyrazole ring skeleton)

[0024] NMR spectrum: 1 HNMR (DMSO-d 6 ,500MHz), δ: 7.213(s,8H,2NH 4 + ); 13 CNMR (DMSO-d 6 ,125MHz), δ: 138.74,140.27

[0025] Elemental analysis: Molecular formula C 4 h 8 N 8 o 4

[0026] Theoretical value: C 20.69, H 3.47, N 48.27

[0027] Found values: C 20.77, H 3.42, N 48.32

[0028] The above structural...

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Abstract

The present invention discloses a 1,4-dyhydroxy-3,6-dinitropyrazole[4,3-c]benzothiazolyl compound with a structural formula (I) is as shown in the description. The 1,4-dyhydroxy-3,6-dinitropyrazole[4,3-c]benzothiazolyl compound is mainly applied to the field of energetic materials.

Description

technical field [0001] The invention relates to an energetic material, in particular to a 1,4-dihydroxy-3,6-dinitropyrazolo[4,3-c]pyrazole compound. Background technique [0002] Multi-nitrogen energetic compounds are a class of energetic materials with unique properties, which have shown promising application prospects in the fields of explosives and propellants. Pyrazolopyrazole multi-nitrogen energetic compounds have become one of the fields of extensive research on energetic materials due to their compact structure, high density, large positive heat of formation, and good thermal stability. The molecular structure of this type of compound contains a large number of C-N, C=N, N-N and N=N bonds. When decomposed, a large amount of nitrogen gas is released to generate high energy. It is not sensitive to friction, electric sparks and other stimuli, so it can be used in high-energy and low-sensitivity explosives , gas generants, burning rate regulators, low signature propella...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07D487/04C06B25/34
CPCC06B25/34C07D487/04
Inventor 李亚南舒远杰王伯周汪伟朱勇罗义芬霍欢翟连杰廉鹏
Owner XIAN MODERN CHEM RES INST