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.
在路易斯酸Co(ClO 4)2的催化下,空间受阻的1,1,2,3-四取代的环丙烷与芳胺在回流的THF中反应,得到官能化的2-氨基吡咯,环丙烷依次开环,亲核取代,氰基的亲核加成和再循环过程。