Highly Diastereo- and Enantioselective Vinylogous Mannich Reactions of Fluorinated Aldimines with Siloxyfurans
作者:Qian-Yi Zhao、Zhi-Liang Yuan、Min Shi
DOI:10.1002/adsc.201000843
日期:2011.3.7
A highly regio‐ and enantioselective asymmetric vinylogousMannichreaction of readily available fluorinatedaldimines bearing a chiral auxiliary [(S)‐1‐phenylethyl group] with siloxyfurans to afford chiral fluorine‐containing γ‐butenolide or γ‐lactone derivatives has been developed in the presence of silver acetate (10 mol%) and axially chiral phosphine‐oxazoline ligand L1 (11 mol%). In most cases