Highly Enantioselective Sulfenylation of β-Ketoesters: H-Bond Acceptor Catalysis
作者:Ling Fang、Aijun Lin、Hongwen Hu、Chengjian Zhu
DOI:10.1002/chem.200901099
日期:2009.7.20
A new mode of activation: The asymmetric diarylprolinol‐catalyzed α‐sulfenylation of β‐ketoesters provides the products in good‐to‐excellent enantioselectivities and yields. Studies suggest that the sterically bulky secondary amines activate β‐ketoesters through hydrogen bonding. Lg=leaving group.