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‐alkynylimine 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