Catalyst-Dependent Divergent Synthesis of Pyrroles from 3-Alkynyl Imine Derivatives: A Noncarbonylative and Carbonylative Approach
作者:Gen-Qiang Chen、Xiao-Nan Zhang、Yin Wei、Xiang-Ying Tang、Min Shi
DOI:10.1002/anie.201405215
日期:2014.8.4
A novel Ru0‐ and RhI‐catalyzed noncarbonylative and carbonylative cycloisomerization of readily available 3‐alkynyl imine derivatives has been developed to provide 3,4‐fused or nonfused pyrrole derivatives efficiently in moderate to excellent yields. The key steps involve the formation of a ruthenium carbenoid intermediate or a rhodacycle intermediate, respectively. In these reactions, CO can serve
已开发出新颖的Ru 0和Rh I催化的3炔基亚胺衍生物的非羰基化和羰基化环异构化技术,可有效地提供3,4-稠合或非稠合的吡咯衍生物,且产率中等至优异。关键步骤分别涉及钌类胡萝卜素中间体或铑环中间体的形成。在这些反应中,CO可以用作配体或试剂。