发明名称 Asymmetric aldol additions using bifunctional cinchona-alkaloid-based catalysts
摘要 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 alpha-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 alpha-keto esters.
申请公布号 US2007112199(A1) 申请公布日期 2007.05.17
申请号 US20060442667 申请日期 2006.05.26
申请人 发明人 DENG LI;LI HONGMING
分类号 C07D453/04 主分类号 C07D453/04
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