Catalytic Asymmetric Roskamp Reaction of Silyl Diazoalkane: Synthesis of Enantioenriched α-Silyl Ketone
作者:Jae Yeon Kim、Byung Chul Kang、Do Hyun Ryu
DOI:10.1021/acs.orglett.7b02928
日期:2017.11.3
diazoalkane to synthesize a highly optically active α-silyl ketonefrom aldehydes is described. In the presence of a chiral oxazaborolidinium ion catalyst, the reaction provides α-chiral silyl ketones with good yields (up to 97%) and high enantioselectivities (up to >99% ee). In addition, a one-potprocedure using an asymmetric Roskamp/reduction strategy gives highly optically active syn-β-hydroxysilane