Oxidation of 1,1-disubstituted hydrazines with benzeneseleninic acid and selenium dioxide. Facile preparation of tetrazenes
作者:Thomas G. Back、Russell G. Kerr
DOI:10.1139/v82-390
日期:1982.11.1
1,1-disubstituted hydrazines were oxidized with benzeneseleninic acid in methanol, generally producing the corresponding tetrazenes in high yield. Studies of the by-products of the reaction, of the effects of protic vs. aprotic solvents, and trapping experiments suggest that N-aminonitrenes are unlikely intermediates in this oxidation. An alternative mechanism involving a Pummerer-like reaction of seleninamides
Reactions of 1,4-dinitroimidazoles with hydrazines
作者:Jerzy Suwiński、Wojciech Szczepankiewicz、Elizabeth M. Holt
DOI:10.1016/0040-4020(96)00903-9
日期:1996.11
Reaction of 2-methyl-1,4-dinitroimidazole with hydrazine results in expansion of the imidazole ring and formation of the 1,2,4-triazine derivative. Reaction of 1,4-dinitroimidazole with N-aminomorpholine yields 1-(N-morpholino)-4-nitroimidazole, by degenerative transformation of the imidazole ring. Treatment of 1,4-dinitroimidazoles with t-butoxycarbonylhydrazine results in the break down of the imidazole