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 highly enantioselective 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
报道了N-苄基吲哚向N-酰基亚胺的高度对映选择性有机催化加成。总共提供了15个实例,产品收率从89%到99%不等,对映选择性从90%到97%不等。衍生自受阻二元醇衍生物的手性磷酸催化剂在反应中最有效地使用。该反应的吸引人的特征包括所需的催化剂载量,良好的反应性,底物的通用性以及易于从两个氮原子上除去的基团。