Catalytic Regioselective Synthesis of Structurally Diverse Indene Derivatives from <i>N</i>-Benzylic Sulfonamides and Disubstituted Alkynes
作者:Cong-Rong Liu、Fu-Lai Yang、Yi-Zhou Jin、Xian-Tao Ma、Dao-Juan Cheng、Nan Li、Shi-Kai Tian
DOI:10.1021/ol101524w
日期:2010.9.3
An unprecedented protocol has been developed for the regioselective synthesis of structurally diverse indene derivatives from readily accessible N-benzylic sulfonamides and disubstituted alkynes through FeCl3-catalyzed cleavage of sp3 carbon−nitrogen bonds to generate benzyl cation intermediates. In the presence of 10 mol % of FeCl3, a broad range of N-benzylic sulfonamides smoothly react with internal
已经开发了一种空前的协议,用于通过FeCl 3催化的sp 3碳氮键裂解生成苯甲基阳离子中间体,从易于获得的N-苄基磺酰胺和二取代的炔烃上进行区域选择性的茚衍生物的区域选择性合成。在10mol%的FeCl 3的存在下,宽范围的N-苄基磺酰胺与内部炔烃,炔基羰基化合物,炔基硫族化物或炔基卤化物平稳地反应,以提供具有极高区域选择性的各种官能化的茚衍生物。