A green one-pot process for the synthesis of 1,2,4-triazole-fused heterocycles using FeBr3 catalyst and hydrogen peroxide
作者:Yuliang Pan、Ruotong Tian、Yini Chen、Linyang Wang、Huilin Qin、Jian Wang
DOI:10.1016/j.tet.2023.133688
日期:2023.11
An environmentally benign oxidative cyclization utilizing FeBr3 catalyst and hydrogen peroxide as terminal oxidant is devised for one-pot synthesis of 1,2,4-triazole-fused heterocycles from commercially available aliphatic or (hetero)aromatic aldehydes and 2-hydrazinopyridine derivatives. The protocol features mild conditions, simple operation, air/water tolerance, short reaction time, and waste prevention
One–pot synthesis of 1,2,4-triazole-Fused heterocycles via sequential condensation and iron-catalyzed aerobic oxidation
作者:Linyang Wang、Xuxu Huang、Jinyun Lan、Jian Wang
DOI:10.1016/j.tet.2024.134044
日期:2024.6
A one-pot method has been devised for the synthesis of 1,2,4-triazole-fused heterocycles. This method involves the condensation of commercially available (hetero)aromatic/aliphatic aldehydes and 2-hydrazinopyridine derivatives, succeeded by iron-catalyzedoxidation using O in air as the oxidant and without using any ligands or additives. The salient merits of this chemistry include broad substrate