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
本文中,我们报道了由具有对称和不对称酰亚胺的市售肼高效,环保的氧化铝促进的N-芳基-1,2,4-三唑的合成,具有多种取代方式。具有多种取代模式的芳香肼以非常高的产率提供了相应的1,2,4-三唑。具有多种官能团的不对称酰亚胺还为各自的三唑提供了高收率和完全的区域选择性。高生产率和温和的条件允许大规模制备1,2,4-三唑。