نتایج جستجو برای: nitro
تعداد نتایج: 13086 فیلتر نتایج به سال:
Reaction of substituted-aniline (8) with ethyl (l-methyl-5-nitroimidazole-2- carbonyl) acetate (9) gave 4-hydroxy-2-(l-methyl-5-nitro-2-imidazolyl)- substituted-quinolines (lo), which were converted to compound 11 with phosphorus oxychloride. Substituted-2-(l-methyl-5-nitro-2-imidazo1yl)-4.- methyl-(or phenyl-) quinolines (14) were prepared through the reaction of 2- acetyl-5-nitro-1-methy...
Since FOX-7 (1, 1-diamino-2, 2-dinitroethylene) is a relatively new energetic material, little is known about its physical and chemical properties. Therefore, first-principles quantum chemical calculations are used to predict the energies of atoms of FOX-7. Under gentle heating (thermolysis) is likely to cause hydrogen transfer between molecules, producing highly reactive chemical species. Conv...
The multicomponent reaction of 2-nitroacetophenone (or nitroacetone), acetaldehyde diethyl acetal, ?-dicarbonyl compound, and ammonium acetate in an acetic acid solution allowed the acquisition previously undescribed 4-methyl-substituted derivatives 5-nitro-1,4-dihydropyridine satisfactory yields. oxidation obtained resulted corresponding 2,4-dimethyl-5-nitropyridines. In addition, for first ti...
Copper (II) phthalocyanine and 2,9,16,23 tetrakis nitro copper (II) phthalocyaninehas been synthesized respectively from phthalonitrile and 4-nitro phthalonitrile under solvent-free condition using two different catalystsovernanodimensionalzeolites. 4-Nitro phthalonitrile synthesized from phthalimide in three steps. The newly prepared compounds have been characterized by IR, UV-Vis, 1</sup...
since fox-7 (1, 1-diamino-2, 2-dinitroethylene) is a relatively new energetic material, little is known about its physical and chemical properties. therefore, first-principles quantum chemical calculations are used to predict the energies of atoms of fox-7. under gentle heating (thermolysis) is likely to cause hydrogen transfer between molecules, producing highly reactive chemical species. conv...
Microorganims of the bovine rumen fluid biocatalyzed the reduction of nitro-compound substrates to yield the respective amines. This enzymatic process, using ruminal contents, has rarely been reported in association with the bioreduction of nitro groups. The biotransformation reactions catalyzed by this system were dependent of both the electronic characteristics and the area/volume of the nitr...
The energetic materials have different military and civilian usages and development of new materials with higher efficiency is of interest. Because of hazards related to the synthesis of the energetic materials and to reduce laboratory related expenses, nowadays, using computational methods to evaluate the properties of the energetic compounds such as heat of formation, density, pressure ...
Same as Report (SAR) 18. NUMBER
The explosion material due to inner pressure have structural instability and this subject special in case of compounds contain nitrate, nitro, di-azo, and azide agents, …,while show in higher temperature than normal media will be greater. thus, the compound is added as a stabilizer to the materials that are capable of reacting with the products of decomposition of the propellant and stable th...
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