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:
Jan. 30, 2001
Filed:
Jul. 13, 1999
Applicant:
Inventors:
Guido Giffels, Bonn, DE;
Marcel Felder, Dottikon, CH;
Udo Kragl, Kritzmow, DE;
Christian Wandrey, Julich, DE;
Andreas Bommarius, Frankfurt, DE;
Carsten Bolm, Aachen, DE;
Nadine Derrien, Cambridge, GB;
Karlheinz Drauz, Freigericht, DE;
Assignee:
Other;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07C 2/9143 ;
U.S. Cl.
CPC ...
C07C 2/9143 ;
Abstract
The invention involves a procedure for the catalytic enantioselective reduction of ketones to chiral alcohols. Heretofore, this reaction was carried out batch-wise. Because, in this procedure, one utilizes a catalyst increased in size with polymer, it is possible to carry out the reaction in a quasi-continuous manner in a membrane reactor. In contrast to the state of the art, one thus dramatically increases the operative life of the catalyst.