Preparation of chiral cyclic amino acids and derivatives
申请人:The Penn State Research Foundation
公开号:US20040242889A1
公开(公告)日:2004-12-02
Cyclic &bgr;-(acylamino)acrylate derivatives were hydrogenated using Ru-chiral phosphine ligand catalysts and thereafter converted to the corresponding cyclic &bgr;-aminoacids in high yield and enantioselectivity according to the reaction scheme:
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Enantioselective Hydrogenation of Tetrasubstituted Olefins of Cyclic β-(Acylamino)acrylates
作者:Wenjun Tang、Shulin Wu、Xumu Zhang
DOI:10.1021/ja035777h
日期:2003.8.1
Hydrogenation of a series of cyclic beta-(acylamino)acrylates with tetrasubstituted olefins has been accomplished successfully with the use of Ru catalysts with chiral biaryl ligands such as C3-TunaPhos, and up to over 99% ee's have been achieved. This methodology provides an efficient catalytic method for the synthesis of both cis and trans chiral cyclic beta-amino acid derivatives.