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:
Aug. 14, 2018
Filed:
Dec. 18, 2013
Applicant:
Dsm Ip Assets B.v., Heerlen, NL;
Inventors:
Jonathan Alan Medlock, Kaiseraugst, CH;
Gerardus Karel Maria Verzijl, Kaiseraugst, CH;
Edwin Gerard Ijpeij, Kaiseraugst, CH;
Andreas Hendrikus Maria De Vries, Kaiseraugst, CH;
Assignee:
DSM IP ASSETS B.V., Heerlen, NL;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C07C 45/62 (2006.01); C07B 35/02 (2006.01); C07D 311/72 (2006.01); C07B 53/00 (2006.01);
U.S. Cl.
CPC ...
C07B 35/02 (2013.01); C07B 53/00 (2013.01); C07C 45/62 (2013.01); C07D 311/72 (2013.01); C07B 2200/07 (2013.01);
Abstract
The present invention relates to a process of the asymmetric hydrogenation of an unsaturated ketone or aldehyde by molecular hydrogen in the presence of at least one chiral iridium complex and in the presence of at least one additive and a halogenated alcohol. 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.