The present invention relates to a process for the resolution of Schiff bases of racemic (R,S)-2-aminobutyramide to give optically pure (S)-2-aminobutyramide, an intermediate in the synthesis of levetiracetam.
[EN] PROCESS FOR PREPARING 2-OXO-1-PYRROLIDINE DERIVATIVES<br/>[FR] METHODE DE PREPARATION DE DERIVES DE 2-OXO-1-PYRROLIDINE
申请人:UCB SA
公开号:WO2005028435A1
公开(公告)日:2005-03-31
The present invention relates to a new process for preparing 2-oxo- I -pyrrolidine derivatives of general formula (I) wherein the substituents are as defined in the specification.
本发明涉及一种制备通式(I)中取代基如规范中所定义的2-氧代-1-吡咯烷衍生物的新方法。
[EN] PROCESS FOR PREPARING 2-OXO-1-PYRROLIDINE DERIVATIVES BY INTRAMOLECULAR ALLYLATION<br/>[FR] PROCESSUS DE PREPARATION DE DERIVES 2-OXO-1-PYRROLIDINE PAR ALLYLATION INTRAMOLECULAIRE
申请人:UCB SA
公开号:WO2005121082A1
公开(公告)日:2005-12-22
The present invention relates to a new process for preparing 2-oxo-1-pyrrolidine derivatives of general formula (I), comprising the cyclisation of an intermediate of general formula (II) wherein the substituents are as defined in the specification.