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
设计了一种利用 FeBr 3催化剂和过氧化氢作为末端氧化剂的环境友好型氧化环化反应,用于从市售脂肪族或(杂)芳香族醛和 2-肼基吡啶衍生物一锅法合成 1,2,4-三唑稠合杂环。该方案具有条件温和、操作简单、耐空气/水、反应时间短和防止浪费的特点,并通过32个带有不同取代基的1,2,4-三唑稠合杂环的合成得到了证明,其性能处于中等至优异的水平。产量。