Synthesis of new 4,5-substituted 4H-1,2,4-triazole-3-thiols and their sulfanyl derivatives
摘要:
Reaction of hydrazides of 4-alkoxybenzoic acids with benzyl isothiocyanate followed by cyclization with thiosemicarbazide afforded a series of new 4,5-substituted 4H-1,2,4-triazole-3-thiols. S-Alkylation of the latter led to the formation of the corresponding 4,5-substituted sulfanyl derivatives of 4H-1,2,4-triazoles.
Synthesis of new 4,5-substituted 4H-1,2,4-triazole-3-thiols and their sulfanyl derivatives
摘要:
Reaction of hydrazides of 4-alkoxybenzoic acids with benzyl isothiocyanate followed by cyclization with thiosemicarbazide afforded a series of new 4,5-substituted 4H-1,2,4-triazole-3-thiols. S-Alkylation of the latter led to the formation of the corresponding 4,5-substituted sulfanyl derivatives of 4H-1,2,4-triazoles.
Alkylation, amino(hydroxy)methylation, and cyanoethylation of 5-substituted 4-phenyl-4H-1,2,4-triazole-3-thiols
作者:M. A. Kaldrikyan、N. S. Minasyan、R. G. Melik-Ogandzanyan
DOI:10.1134/s1070363216020171
日期:2016.2
Reactions of 1,2,4-triazole-3-thiols with 2-bromopropionic acid, 2-bromocaproic acid, ethylene chlorohydrine, chloroacetamide, 3-bromo-4-methoxybenzyl chloride, 2-methoxy-5-acetylbenzyl chloride, and 2-(2-chlorophenoxy)ethyl chloride in the presence of KOH have afforded new 3-sulfanyl-1,2,4-triazoles in high yields. Aminomethylation of 1,2,4-triazole-3-thiols in the presence of formaldehyde has given