Polynitro-substituted pyrazoles and triazoles as potential energetic materials and oxidizers
作者:Ping Yin、Jiaheng Zhang、Chunlin He、Damon A. Parrish、Jean'ne M. Shreeve
DOI:10.1039/c3ta15057g
日期:——
N-Trinitroethylamino energetic derivatives were obtained from carbon and nitrogen functionalization of nitropyrazoles and nitrotriazoles. N-Trinitroethylamino nitroazoles and N-amino nitroazoles were fully characterized by IR, multinuclear NMR spectra, and elemental analyses. Compounds 10, 11 and 15 were further confirmed by single crystal X-ray structuring. N-Functionalized nitroazoles have moderate to excellent thermal stabilities with good densities. Data based on impact and friction tests show these compounds range from very sensitive to insensitive. Theoretical calculations carried out using Gaussian 03 demonstrate good to excellent detonation pressures and velocities, as well as high specific impulse.
<i>N</i>-Diazo-Bridged Nitroazoles: Catenated Nitrogen-Atom Chains Compatible with Nitro Functionalities
作者:Ping Yin、Damon A. Parrish、Jean'ne M. Shreeve
DOI:10.1002/chem.201402762
日期:2014.5.26
N‐diazo‐bridged azoles were synthesized based on oxidative coupling of N‐aminoazoles. Incorporation of extended catenated nitrogen‐atom chains with nitro groups led to compounds with favorable functional compatibilities. This combination gives rise to a series of high‐density energetic materials (HEDMs) with high heats of formation, enhanced densities, positive oxygen balances, and good detonation
Nitropyrazoles 23. Synthesis of substituted N-amino-3-nitro-5-R-pyrazoles
作者:A. V. Kormanov、T. K. Shkineva、I. A. Vatsadze、S. A. Shevelev、I. L. Dalinger
DOI:10.1007/s11172-014-0450-9
日期:2014.2
The study is devoted to nucleophilic substitution of nitro groups in 1-amino-3,5-dinitropyrazole (1) and its amino group derived analogs. Compound 1 upon treatment with S-nucleophiles undergoes regioselective substitution of the nitro group at position 5. Azomethine 5 obtained by the condensation of 1 with benzaldehyde gives the nucleophilic substitution reaction with S-, O-and N-nucleophiles also with involvement of the nitro group at position 5. The synthesized 5-R-substituted azomethines 7–9 upon treatment with hydrazine hydrate form N-amino-5-R-3-nitropyrazoles and benzaldazine.