The Highly Enantioselective Addition of Indoles to <i>N</i>-Acyl Imines with Use of a Chiral Phosphoric Acid Catalyst
作者:Gerald B. Rowland、Emily B. Rowland、Yuxue Liang、Jason A. Perman、Jon C. Antilla
DOI:10.1021/ol0703579
日期:2007.7.1
The highlyenantioselective organocatalytic addition of N-benzyl indoles to N-acyl imines is reported. A total of 15 examples with product yield ranging from 89% to 99% and enantioselectivities from 90% to 97% are presented. A chiral phosphoric acid catalyst derived from a hindered binol derivative was employed most effectively in the reaction. Attractive features of the reaction include desirable