[EN] CATALYTIC ASYMMETRIC SYNTHESIS OF OPTICALLY ACTIVE alpha-HALO-CARBONYL COMPOUNDS<br/>[FR] SYNTHESE ASYMETRIQUE CATALYTIQUE DE COMPOSES DE DOLLAR G(A)-HALO-CARBONYLE OPTIQUEMENT ACTIFS
申请人:HALLAND NIS
公开号:WO2005080298A1
公开(公告)日:2005-09-01
A process for the catalytic asymmetric synthesis of an optically active compound of the formula (la) or (lb): wherein R is an organic group; X is halogen; Rl and R2which may the same or different represents H, or an organic group or Rl and R2 may be bridged together forming part of a ring system; R and R2 may be bridged together forming part of a ring system; with the provisio that R and Rl are different and R2, when different from H, is attached though a carbon-carbon bond, comprising the step of reacting a compound of the formula (2): with a halogenation agent in the presence of a catalytic amount of a chiral nitrogen containing organic compound.
一种用于催化不对称合成光学活性化合物的方法,其化学式为(la)或(lb):其中R是有机基团;X是卤素;R1和R2可以相同也可以不同,分别代表H,或者是有机基团,或者R1和R2可以通过形成环系统的桥连接在一起;R和R2可以通过形成环系统的桥连接在一起;在R和R1不同且R2与H不同时通过碳-碳键连接时,包括以下步骤:将化合物(2)与卤化试剂在含有含有手性氮的有机化合物的催化剂量的情况下反应。