Synthesis of Functionalized 2-Aminopyrroles by Lewis Acid Catalyzed Ring-opening of 1,1,2,3-Tetrasubstituted Cyclopropanes with Arylamines
作者:Ying Han、Qin Fu、Wanquan Tang、Chaoguo Yan
DOI:10.1002/cjoc.201200229
日期:2012.8
Under the catalysis of Lewis acid Co(ClO4)2 the reaction of the sterically hindered 1,1,2,3‐tetrasubstituted cyclopropanes with arylamines in refluxing THF gave the functionalized 2‐aminopyrroles with sequential ring‐opening of cyclopropane, nucleophilic substitution, nucleophilic addition of cyano group and recyclization processes.