Ring Transformation of 7-Nitro-1-(4-nitrophenyl)-4,5-dihydro-1H-imidazo- and -[1,2,3]triazolo[4,5-c]pyridin-4-ones

Autor:	N. N. Smolyar, A. B. Eres'ko, Yu. M. Yutilov, S. V. Gres'ko
Rok vydání:	2004
Předmět:	Para position Transformation (genetics) chemistry.chemical_compound Stereochemistry Chemistry Nitration Organic Chemistry Hydrazine Nitro General Medicine Ring (chemistry) Hydrate Medicinal chemistry
Zdroj:	Russian Journal of Organic Chemistry. 40:1015-1017
ISSN:	1070-4280
DOI:	10.1023/b:rujo.0000045196.50576.d1
Popis:	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.
Databáze:	OpenAIRE
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