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. 21, 2004
Filed:
Apr. 11, 2003
Applicant:
Inventors:
Martin Studer, Basel, CH;
Stephan Burkhardt, Gelterkinden, CH;
Andreas Pfaltz, Binningen, CH;
Christian Exner, Neustadt-Haardt, DE;
Assignee:
Solvias AG, Basel, CH;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C07C 6/976 ; C07C 6/966 ;
U.S. Cl.
CPC ...
C07C 6/976 ; C07C 6/966 ;
Abstract
Process for enantioselectively hydrogenating prochiral ketones to (S)-alcohols using platinum catalysts in the presence of cinchonines or quinidines as modifiers and in the presence of hydrogen, which is characterized in that the modifiers used are cinchonines unsubstituted in the 3-position, 3-ethylidenyl- or 9-methoxycinchonines or derivatives thereof in which the quinoline ring is replaced by other rings.