Copper-Catalyzed Oxidation of Hydrazones to Diazo Compounds Using Oxygen as the Terminal Oxidant
作者:Wenbin Liu、Jack Twilton、Bo Wei、Maizie Lee、Melissa N. Hopkins、John Bacsa、Shannon S. Stahl、Huw M. L. Davies
DOI:10.1021/acscatal.1c00264
日期:2021.3.5
A mild method for accessing diazo compounds via aerobic oxidation of hydrazones is described. This catalytic transformation employs a Cu(OAc)2/pyridine catalyst and molecular oxygen from ambient air as the terminal oxidant, generating water as the sole byproduct and affording the desired diazo compounds within minutes at room temperature. A broad array of electronically diverse aryldiazo esters, ketones