名称:
7-硝基-1-(4-硝基苯基)-4,5-二氢-1H-咪唑并-和-[1,2,3]三唑并[4,5-c]吡啶-4-酮的环转化
摘要:
Nitration of 1-phenyl-4,5-dihydroimidazo- and -1,2,3-triazolo[4,5-c]pyridin-4-ones initially occurs at the para position of the phenyl ring, and the subsequent nitration yields the corresponding 7-nitro-1-(4-nitrophenyl) derivatives. Treatment of the latter with hydrazine hydrate leads to formation of 1-(4-aminophenyl)-7-methyl-4,5-dihydroimidazo- and -1,2,3-triazolo[4,5-d]pyridazin-4-ones.