The invention relates to a process for preparing a compound of formula (I):
wherein said process comprises hydrogenation of a compound of formula (II);
under alkaline conditions, wherein R represents hydrogen or a labile group capable of being converted to hydrogen. The invention also relates to intermediates used in said process, to the use of said intermediates in the preparation of pregabalin and to a process for resolving racemic compounds of formula (I).
[EN] INTERMEDIATE OF PREGABALIN AND PREPARATION METHOD THEREFOR<br/>[FR] INTERMÉDIAIRE DE PRÉGABALINE ET PROCÉDÉ DE PRÉPARATION ASSOCIÉ<br/>[ZH] 一种普瑞巴林的中间体及其制备方法
Evaluation of Achiral Templates with Fluxional Brønsted Basic Substituents in Enantioselective Conjugate Additions
作者:Shinya Adachi、Norihiko Takeda、Mukund P. Sibi
DOI:10.1021/ol503275w
日期:2014.12.19
Enantioselective conjugate addition of malononitrile to pyrazolidinone-derived enoates proceeds in excellent yields and high enantioselectivities. A comparison of fluxional substituents with and without a Bronsted basic site and their impact on selectivity is detailed. Molecular sieves as an additive were found to be essential to achieve high enantioselectivity.
WO2009/1372
申请人:——
公开号:——
公开(公告)日:——
[EN] PROCESS FOR PREPARING PREGABALIN<br/>[FR] PROCÉDÉ DE PRÉPARATION DE PRÉGABALINE