3112-31-0Relevant articles and documents
SYNTHESIS OF NEW MACROCYCLIC POLYETHER DI- OR TETRAESTER LIGANDS CONTAINING PYRAZOLE UNITS
Elguero, J.,Navarro, P.,Franco, M. I. Rodriguez
, p. 425 - 428 (1984)
A new series of macrocyclic polyether - diester compounds containing one or two pyrazole rings (NH or N-methyl substituted) have been prepared by treating 3,5-pyrazolyldicarbonyl chlorides with tetraethylene glycol in the presence of triethylamine.Their complexation abilities towards the shift reagent Eu(Fod)3 have been studied by 1H NMR in CDCl3 solution.
Combining 1,2,4-triazole and pyrazole frameworks for new insensitive energetic materials
Chen, Jieyi,Cheng, Guangbin,Dai, Changhao,Tang, Jie,Yang, Hongwei
, p. 17960 - 17965 (2021/10/12)
A new symmetric compound 3,5-bis(3-amine-4H-1,2,4-triazole)-1H-pyrazole and a series of corresponding energetic salts5-9were synthesized. All the new compounds were fully characterized by spectroscopy (IR, NMR, and elemental) analyses and differential scanning calorimetry (DSC). Compound6was further investigated by X-ray crystal-structure analysis. Various performance tests of all the compounds, such as density, thermal behavior, mechanical sensitivity and detonation property, were tested. All the target compounds showed relatively positive calculated heat of formation (24.9 to 2396.4 kJ mol?1), good mechanical sensitivity (IS > 24 J, FS > 280 N) and acceptable detonation property (D> 7400 m s?1,P> 19.5 GPa). In particular, energetic salt9exhibits prominent detonation property (D> 8964 m s?1,P> 37.1 GPa) and excellent sensitivity (IS > 40 J, FS > 360 N), which show its potential application prospects as a new high energy insensitive material.
Strategy for the Synthesis of pyrazolo[5,1-d][1,2,5]triazepinones, a new heterocyclic system
Kharaneko
, p. 1322 - 1325 (2016/10/26)
A preparative procedure has been developed for the synthesis of 4-oxo-7-phenyl-5,8-dihydro-4H-pyrazolo[ 5,1-d][1,2,5]triazepine-2-carbohydrazide, the first representative of a new heterocyclic system, by recyclization of methyl 4-oxo-6-phenyl-4H-pyrazolo[5,1-c][1,4]oxazine-2-carboxylate with hydrazine hydrate.
Efficient photochemical water oxidation by a dinuclear molecular ruthenium complex
Laine, Tanja M.,K?rk?s, Markus D.,Liao, Rong-Zhen,A?kermark, Torbj?rn,Lee, Bao-Lin,Karlsson, Erik A.,Siegbahn, Per E. M.,A?kermark, Bj?rn
supporting information, p. 1862 - 1865 (2015/01/30)
Herein is described the preparation of a dinuclear molecular Ru catalyst for H2O oxidation. The prepared catalyst mediates the photochemical oxidation of H2O with an efficiency comparable to state-of-the-art catalysts.
