[EN] PROCESS FOR THE PREPARATION OF ENANTIOMERICALLY ENRICHED BETA AMINO ACID DERIVATIVES [FR] PROCEDE POUR LA PREPARATION DE DERIVES D'ACIDES AMINES BETA A ENRICHISSEMENT ENANTIOMERIQUE
[EN] PROCESS FOR THE PREPARATION OF CHIRAL BETA AMINO ACID DERIVATIVES BY ASYMMETRIC HYDROGENATION<br/>[FR] PROCEDE POUR PREPARER DES DERIVES D'ACIDE AMINE BETA CHIRAUX PAR HYDROGENATION ASYMETRIQUE
申请人:MERCK & CO INC
公开号:WO2004085378A1
公开(公告)日:2004-10-07
The present invention relates to a process for the efficient preparation of enantiomerically enriched beta amino acid derivatives which are useful in the asymmetric synthesis of biologically active molecules. The process comprises an enantioselective hydrogenation of a prochiral beta amino acrylic acid derivative substrate in the presence of a transition metal precursor complexed with a chiral ferrocenyl diphosphine ligand.
Process for the preparation of chiral beta amino acid derivatives by asymmetric hydrogenation
申请人:Xiao Yi
公开号:US20060194977A1
公开(公告)日:2006-08-31
The present invention relates to a process for the efficient preparation of enantiomerically enriched beta amino acid derivatives which are useful in the asymmetric synthesis of biologically active molecules. The process comprises an enantioselective hydrogenation of a prochiral beta amino acrylic acid derivative substrate in the presence of a transition metal precursor complexed with a chiral ferrocenyl diphosphine ligand.
Process For The Preparation Of Enantiomerically Enriched Beta Amino Acid Derivatives
申请人:Xiao Yi
公开号:US20080058522A1
公开(公告)日:2008-03-06
The present invention relates to a process for the efficient preparation of enantiomerically enriched beta amino acid derivatives wherein the amino group is unprotected. The product chiral beta amino acid derivatives are useful in the asymmetric synthesis of biologically active molecules. The process comprises an enantioselective hydrogenation of an amine-unprotected prochiral beta-amino acrylic acid or derivative thereof in the presence of a rhodium metal precursor complexed with a chiral mono- or bisphosphine ligand.