WEHRLI H., HELV. CHIM. ACTA, 1980, 63, NO 7, 1915-1919
作者:WEHRLI H.
DOI:——
日期:——
Asymmetric aldol additions using bifunctional cinchona-alkaloid-based catalysts
申请人:Deng Li
公开号:US20070112199A1
公开(公告)日:2007-05-17
One aspect of the present invention relates to asymmetric catalytic nitroaldol (Henry) reactions with ketones as the electrophilic component. In one embodiment, the present invention relates to asymmetric nitroaldol reactions with α-keto esters catalyzed by a new C6′-OH cinchona alkaloid catalyst. In certain embodiments, this reaction is operationally simple and affords high enantioselectivity as well as good to excellent yield for an exceptionally broad range of α-keto esters.