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Ring transformation of 7-nitro-1-(4-nitrophenyl)-4,5-dihydro-1H-imidazo- and -[1,2,3]triazolo[4,5-c]pyridin-4-ones
Yutilov,Smolyar,Eres'ko,Gres'ko
, p. 1015 - 1017 (2007/10/03)
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 lat
