Construction of Quaternary Stereogenic Carbon Centers by the Lewis Base Catalyzed Conjugate Addition of Silyl Ketene Imines to α,β-Unsaturated Aldehydes and Ketones
作者:Scott Denmark、Tyler Wilson
DOI:10.1055/s-0029-1219963
日期:2010.7
Mukaiyama-Michael additions of silyl ketene imines to α,β-unsaturated aldehydes and ketones are described. The combination of silicon tetrachloride and a chiral bis-phosphoramide provides an effective catalyst system for promoting the addition of silyl ketene imines to a variety of aromatic enals with high site selectivity and moderate to good diastereo- and enantioselectivity.
描述了甲硅烷基烯酮亚胺与 α,β-不饱和醛和酮的高度位点选择性 Mukaiyama-Michael 加成。四氯化硅和手性双磷酰胺的组合提供了一种有效的催化剂体系,用于以高位点选择性和中等到良好的非对映和对映选择性促进甲硅烷基乙烯酮亚胺加成到各种芳族烯醛中。