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:
Nov. 27, 1990
Filed:
May. 01, 1989
Applicant:
Inventors:
Gottfried Blaschke, Munster, DE;
Karl-Ernst Schulte, Munster, DE;
Assignee:
Medice Chem.-Pharm. Fabrik Putter GmbH & Co. KG, Iserlohn/Westfalen, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07B / ;
U.S. Cl.
CPC ...
562401 ; 548224 ;
Abstract
A process for obtaining enantiomers of 2-arylpropionic acids by reacting a racemic mixture thereof with an amine-enantiomer, which process comprises converting the racemate of the 2-arylpropionic acid with an optically active form of threo-1-p-nitrophenyl-2-aminopropane-1,3-diol into the diastereomeric salts, separating these salts and converting the thus-obtained pure diastereomers into the free acids of the enantiomer forms of the 2-arylpropionic acid or into the salts thereof.