Copper-catalyzed [2+3]-annulation of N–H imines with vinyl azides: access to polyaryl 2<i>H</i>-imidazoles
作者:Zhongzhi Zhu、Hanze Lin、Baihui Liang、Junjie Huang、Wanyi Liang、Lu Chen、Yubing Huang、Xiuwen Chen、Yibiao Li
DOI:10.1039/c9cc10042c
日期:——
A practical method for the synthesis of 2H-imidazoles via a [2+3] annulation of N-H imines with vinyl azides using a copper catalyst is developed. In this conversion, environmentally friendly oxygen is used as the sole oxidant and N2 and H2O are the only by-products. The catalytic transformation, operating under mild conditions, is operationally simple and is considered as a readily available catalytic
开发了一种实用的方法,该方法通过使用铜催化剂通过NH亚胺与乙烯基叠氮化物的[2 + 3]环合反应合成2H-咪唑。在这种转化过程中,将环保的氧气用作唯一的氧化剂,而N2和H2O是唯一的副产物。在温和条件下进行的催化转化操作简单,被认为是易于获得的催化体系,具有良好的底物和功能相容性,且原子效率高,无需其他配体或添加剂。