使用硝酸钾和浓硫酸(KNO 3 / H 2 SO 4)的混合物作为硝化试剂的氨基取代的吡唑/三唑的硝化温和有效的策略顺利进行,得到了氨基取代的产物。这些与相应碱基,得到有活力的盐治疗的1 - 10。将化合物完全表征,并且对获得的单晶X射线衍射研究1,4,6,和10。测量或计算物理性能和爆震性能。盐1,2,6,8和9表现出出色的爆炸性能和可接受的灵敏度以及良好的稳定性,这表明它们具有用作高性能炸药的潜力。
Nitrogen-centered radical reaction leading to energetic materials: a mild and efficient access to N–N bridged compounds
作者:Zhiwei Zeng、Yuji Liu、Guangbin Cheng、Wei Huang、Hao Wei、Jean'ne M. Shreeve、Yongxing Tang
DOI:10.1039/d1ta06659e
日期:——
radical reaction is a type of highly efficient organic reaction with a broad coverage in organic synthesis. However, its potential in the preparation of energetic materials is grossly underexplored. Now a novel nitrogen-centered radical reaction was discovered which features an N–N coupling capability, able to couple a pyrazole-based energetic compound to its N–N bridged dimer. The reaction exhibits
A new general synthesis of functionally substituted pyrazolo[1,5-a]pyrimidines
作者:Tatyana K. Shkineva、Irina A. Vatsadze、Igor L. Dalinger
DOI:10.1016/j.mencom.2019.07.025
日期:2019.7
5,7-Dimethyl-2,3-dinitropyrazolo[1,5-a]pyrimidine in reaction with N-, S- and O-nucleophiles under mild conditions undergoes regioselective nucleophilic substitution of the 2-positioned nitro group, which provides an access to a library of 2-R-3-nitropyrazolo[1,5-a]pyrimidines.
salts of NAN are thermally stable, but their insolubility in organic solvents restricts their use as a synthetic reagents. On the contrary, dipyrrolidinium cyano-aci-nitroacetate is soluble in common organic solvents and thermally stable, allowing for its use as an alternative syntheticequivalent of nitroacetonitrile for the construction of polyfunctionalized frameworks via cyano(nitro)methylation
Energetic Derivatives of 8-Nitropyrazolo[1,5-<i>a</i>][1,3,5]triazine-2,4,7-triamine: Achieving Balanced Explosives by Fusing Pyrazole with Triazine
作者:Jinchao Ma、Yongxing Tang、Guangbin Cheng、Gregory H. Imler、Damon A. Parrish、Jean’ne M. Shreeve
DOI:10.1021/acs.orglett.9b04642
日期:2020.2.21
Using the triazine ring as the stabilizing factor, a series of energy-safety balanced fused ring compounds were successfully studied. Compounds 1, 7, and 9·H2O were further confirmed by single-crystal X-ray diffraction analysis. The detonation performance and safety parameters associated with impact and friction sensitivities were investigated by using EXPLO5 (version 6.01) and BAM methods, respectively
Crystal and molecular structures of 2-[1-(2-aminoethyl)-2-imidazolidinylidene]-2-nitroacetonitrile (C<sub>7</sub>H<sub>11</sub>N<sub>5</sub>O<sub>2</sub>) and 2,6-diamino-5-hydroxy-3-nitro-4<i>H</i>-pyrazolo[1,5-<i>a</i>]pyrimidin-7-one monohydrate (C<sub>6</sub>H<sub>6</sub>N<sub>6</sub>O<sub>4</sub>·H<sub>2</sub>O) from X-ray, synchrotron and neutron powder diffraction data
作者:V. V. Chernyshev、A. N. Fitch、E. J. Sonneveld、A. I. Kurbakov、V. A. Makarov、V. A. Tafeenko
DOI:10.1107/s010876819900213x
日期:1999.8.1
The crystal and molecularstructures of 2-[1-(2-aminoethyl)-2-imidazolidinylidene]-2-nitroacetonitrile [C(7)H(11)N(5)O(2); space group P2(1)/n; Z = 4; a = 7.4889 (8), b = 17.273 (2), c = 7.4073 (8) Å, beta = 111.937 (6) degrees ], (I), and 2,6-diamino-5-hydroxy-3-nitro-4H-pyrazolo[1,5-a]pyrimidin-7-one monohydrate [C(6)H(6)N(6)O(4).H(2)O; space group P2(1)/n; Z = 4; a = 17.576 (3), b = 10.900 (2),