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:
Feb. 07, 2017
Filed:
Dec. 18, 2013
Applicant:
Dsm Ip Assets B.v., Heerlen, NL;
Inventors:
Werner Bonrath, Kaiseraugst, CH;
Thomas Netscher, Kaiseraugst, CH;
Jonathan Alan Medlock, Kaiseraugst, CH;
Gerardus Karel Maria Verzijl, Kaiseraugst, CH;
Andreas Hendrikus Maria De Vries, Kaiseraugst, CH;
Assignee:
DSM IP ASSETS B.V., Heerlen, NL;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07D 507/02 (2006.01); C07B 35/02 (2006.01); C07D 317/12 (2006.01); C07C 41/48 (2006.01); C07B 53/00 (2006.01); C07D 311/72 (2006.01); C07D 319/06 (2006.01); B01J 31/18 (2006.01); C07C 41/56 (2006.01); C07C 41/58 (2006.01);
U.S. Cl.
CPC ...
C07B 35/02 (2013.01); B01J 31/189 (2013.01); C07B 53/00 (2013.01); C07C 41/48 (2013.01); C07C 41/56 (2013.01); C07C 41/58 (2013.01); C07D 311/72 (2013.01); C07D 317/12 (2013.01); C07D 319/06 (2013.01); B01J 2231/34 (2013.01); B01J 2531/827 (2013.01); C07B 2200/07 (2013.01); C07B 2200/09 (2013.01);
Abstract
The present invention relates to a process of the asymmetric hydrogenation of a ketal of an unsaturated ketone or an acetal of an unsaturated aldehyde by molecular hydrogen in the presence of at least one chiral iridium complex. This process yields chiral compounds in a very efficient way and is very advantageous in that the amount of iridium complex can be remarkably reduced.