Asymmetric synthesis of warfarin and its analogues on water
作者:Maria Rogozińska-Szymczak、Jacek Mlynarski
DOI:10.1016/j.tetasy.2014.04.008
日期:2014.5
The asymmetric Michael addition of 4-hydroxycoumarin to α,β-unsaturatedketones on water without organic co-solvents is reported to be catalysed by organic primary amines. The application of enantiomerically pure (S,S)-diphenylethylenediamine affords a series of important pharmaceutically active compounds in good to excellent yields (73–98%) and with good enantioselectivities (up to 76% ee) via reactions
Organocatalytic Asymmetric Michael Reaction of Cyclic 1,3-Dicarbonyl Compounds andα,β-Unsaturated Ketones—A Highly Atom-Economic Catalytic One-Step Formation of Optically Active Warfarin Anticoagulant
作者:Nis Halland、Tore Hansen、Karl Anker Jørgensen
DOI:10.1002/anie.200352136
日期:2003.10.20
Catalytic Asymmetric β-C–H Functionalizations of Ketones via Enamine Oxidation
作者:Lihui Zhu、Long Zhang、Sanzhong Luo
DOI:10.1021/acs.orglett.8b00508
日期:2018.3.16
A chiral primary amine catalyzed oxidative β-C–H functionalization of ketone is described. The reaction proceeds via ketone enamine oxidation by IBX and enables highly enantioselective remote C–H functionalization of both cyclic and acyclic ketones, generating chiral ketones bearing β-stereocenters.