Copper-Catalyzed Construction of Benzo[4,5]imidazo[2,1-<i>a</i>]isoquinolines Using Calcium Carbide as a Solid Alkyne Source
作者:Haiyan Liu、Zheng Li
DOI:10.1021/acs.orglett.1c03133
日期:2021.11.5
cross-coupling/nucleophilic addition tandem reactions usingcalciumcarbide as a solidalkynesource, 2-(2-bromophenyl)benzimidazoles as starting materials, and copper as a catalyst is described. The target products can also be synthesized through one-pot three-component reactions of o-phenylenediamines, o-bromobenzaldehydes, and calciumcarbide. Both reaction routes can also be scaled up to gram scale
一种以碳化钙为固体炔烃源,2-(2-溴苯基)苯并咪唑为原料,通过Sonogashira交叉偶联/亲核加成串联反应合成苯并[4,5]咪唑并[2,1- a ]异喹啉的方法材料,并描述了铜作为催化剂。目标产物还可以通过单罐三组分反应合成ö苯二胺类,ø -bromobenzaldehydes,和电石。两种反应路线也可以放大到克级。