A catalyst comprising a chiral transition metal-(1,2-bis(2,5-dialkylphospholano) complex immobilised on a specific zeolitic support useful for the hydrogenation of prochiral substrates.
2-OXO-1-PYRROLIDINE DERIVATIVES, PROCESS FOR PREPARING THEM AND THEIR USES
申请人:——
公开号:US20040092576A1
公开(公告)日:2004-05-13
The invention concerns 2-oxo-1-pyrrolidine derivatives and a process for preparing them and their uses. The invention also concerns a process for preparing &agr;-ethyl-2-oxo-1-pyrrolidine acetamide derivatives from unsaturated 2-oxo-1-pyrrolidine derivatives. Particularly the invention concerns novel intermediates and their use in methods for the preparation of S-&agr;-ethyl-2-oxo-1-pyrrolidine acetamide.