Nitroimidazoles XVII. Nucleophilic amination or ring transformation in reactions of 1-aryl-4-nitroimidazoles with 4-amino-1,2,4-triazole or hydroxylamine
摘要:
1-aryl-4-nitroimidazoles under action of 4-amino-1,2,4-triazole in the presence of MeONa in DMSO undergo a vicarious nucleophilic substitution of hydrogen to give 5-amino-1-aryl-4-nitroimidazoles. If reacted with hydroxylamine in the presence of KOH or MeONa in methanol (but not in DMSO) 1-aryl-4-nitroimidazoles undergo a transformation to 4-acylamino-2-aryl-1-oxy-2H-1,2.3-triazoles but do not yield amination products.
Transformations of the imidazole ring in 1-alkyl and 1-aryl-4-nitroimidazoles following the attack of hydroxylamine or 4-amino-1,2,4-triazole
作者:Jerzy Suwinski、Krzysztof Swierczek
DOI:10.1007/bf01164709
日期:1996.9
SALWINSKA, EWA;SUWINSKI, JERZY, POL. J. CHEM., 64,(1990) N-12, C. 813-817
作者:SALWINSKA, EWA、SUWINSKI, JERZY
DOI:——
日期:——
Nitroimidazoles XVII. Nucleophilic amination or ring transformation in reactions of 1-aryl-4-nitroimidazoles with 4-amino-1,2,4-triazole or hydroxylamine
1-aryl-4-nitroimidazoles under action of 4-amino-1,2,4-triazole in the presence of MeONa in DMSO undergo a vicarious nucleophilic substitution of hydrogen to give 5-amino-1-aryl-4-nitroimidazoles. If reacted with hydroxylamine in the presence of KOH or MeONa in methanol (but not in DMSO) 1-aryl-4-nitroimidazoles undergo a transformation to 4-acylamino-2-aryl-1-oxy-2H-1,2.3-triazoles but do not yield amination products.
Salwinska, Ewa; Suwinski, Jerzy, Polish Journal of Chemistry, 1990, vol. 64, # 7, p. 813 - 817