The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 26, 2000
Filed:
May. 07, 1999
Applicant:
Inventors:
Emile Cavoy, Ham-sur-Heure, BE;
Michel Hamende, Uccle, BE;
Michel Deleers, Linkebeek, BE;
Jean-Pierre Canvat, Brussels, BE;
Vincent Zimmermann, Brussels, BE;
Assignee:
UCB, S.A., Brussels, BE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C07D / ;
U.S. Cl.
CPC ...
548550 ;
Abstract
The present invention relates to a process for preparing (S)- and (R)-.alpha.-ethyl-2-oxo-1-pyrrolidineacetamide and (R)-.alpha.-ethyl-2-oxo-1-pyrrolidineacetamide. According to this process, the enantiomeric resolution of the racemic mixture of .alpha.-ethyl-2-oxo-1-pyrrolidineacetamide is carried out by simulated mobile bed chromatography, using at least three columns filled with chiral stationary phase. This process makes it possible to achieve good production efficiency on the industrial scale.