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:
Oct. 23, 2012
Filed:
Feb. 27, 2003
Applicants:
Boris Bosch, Köln, DE;
Markus Eckert, Shanghai, CN;
Hans-christian Militzer, Odenthal, DE;
Claus Dreisbach, Leichlingen, DE;
Inventors:
Boris Bosch, Köln, DE;
Markus Eckert, Shanghai, CN;
Hans-Christian Militzer, Odenthal, DE;
Claus Dreisbach, Leichlingen, DE;
Assignee:
Lanxess Deutschland GmbH, Leverkusen, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07D 333/36 (2006.01); C07D 221/06 (2006.01); C07D 277/56 (2006.01); C07D 475/02 (2006.01); C07D 233/44 (2006.01);
U.S. Cl.
CPC ...
Abstract
The present invention relates to a process for preparing stereoisomerically enriched 3-heteroaryl-3-hydroxycarboxylic esters by reducing 3-heteroaryl-3-oxocarboxylic esters in the presence of ruthenium-containing catalysts.