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. 11, 2011
Filed:
Dec. 17, 2007
Applicants:
Hans-christian Militzer, Odenthal, DE;
Boris Bosch, Köln, DE;
Markus Eckert, Shanghai, CN;
Benjamin Meseguer, Tarragona, ES;
Inventors:
Hans-Christian Militzer, Odenthal, DE;
Boris Bosch, Köln, DE;
Markus Eckert, Shanghai, CN;
Benjamin Meseguer, Tarragona, ES;
Assignee:
LANXESS Deutschland GmbH, Leverkusen, DE (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07D 333/12 (2006.01); C07D 333/20 (2006.01); C07C 233/00 (2006.01); C07C 235/00 (2006.01); C07C 237/00 (2006.01); C07C 239/00 (2006.01); C07C 211/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
The present invention relates to a process for preparing stereoisomerically enriched 4-aryl-4-hydroxybutanoic acid derivatives by reducing 4-aryl-4-ketobutanoic acid derivatives in the presence of ruthenium-containing catalysts.