Russian journal of organic chemistry

Cyclization of substituted 3, 4-diaminopyridines into 1H-[1, 2, 3] triazolo [4, 5-c] pyridine 2-oxide derivatives during the nitration process

NN Smolyar, AB Vasilechko

文献索引：Smolyar; Vasilechko Russian Journal of Organic Chemistry, 2010 , vol. 46, # 8 p. 1219 - 1222

全文：HTML全文

被引用次数: 1

摘要

Abstract The nitration of pyridine-3, 4-diamine, its N, N′-diacetyl derivative, and N 4- alkylpyridine-3, 4-diamines with excess nitric acid in concentrated sulfuric acid at 60° C was accompanied by cyclization with formation of the corresponding 1-substituted 4-nitro-1 H-[1, 2, 3] triazolo [4, 5-c] pyridine 2-oxides. 4-Chloro-1 H-[1, 2, 3] triazolo [4, 5-c] pyridine 2-oxide derivatives were obtained under analogous conditions from 2-chloropyridine-3, 4-diamine ...