Synthesis of 1,3,5-trisubstituted-1,2,4-triazoles by microwave-assisted N-acylation of amide derivatives and the consecutive reaction with hydrazine hydrochlorides
作者:Jongbok Lee、Myengchan Hong、Yoonchul Jung、Eun Jin Cho、Hakjune Rhee
DOI:10.1016/j.tet.2012.01.003
日期:2012.2
Facile and efficient procedures for the N-acylation reaction of amide derivatives with various acid anhydrides and the cyclization reaction of N-acylated amide derivatives with various hydrazinehydrochlorides were described. The reactions were carried out under microwave irradiation to give products in good yields in a few minutes. The synthesis of 1,3,5-trisubstituted-1,2,4-triazoles from benzamides
Alumina-promoted synthesis of N-aryl-1,2,4-triazoles from substituted hydrazines and imides
作者:William C. Neuhaus、Gustavo Moura-Letts
DOI:10.1016/j.tetlet.2016.09.086
日期:2016.11
Herein we report the highly efficient, environmentally friendly alumina-promoted synthesis of N-aryl-1,2,4-triazoles with a wide variety of substitution patterns from commercially available hydrazines with symmetrical and unsymmetrical imides. Aromatic hydrazines with a variety of substitution patterns provided the corresponding 1,2,4-triazoles in very high yields. Unsymmetrical imides with a wide