Patent · US Active

Asymmetric hydrogenation of alkenes using chiral iridium complexes

US8426617B2 · kind B2 · utility

0Cited by

9References

16Claims

0Family size

Assignee

DSM IP ASSETS B.V. · NL

Inventors

Werner Bonrath · Kaiseraugst, CH
Frederik Menges · Schriesheim, DE
Thomas Netscher · Bad Krozingen, DE
Andreas Pfaltz · Binningen, CH
Bettina Wüstenberg · Basel, CH

Key dates

Filing date	Dec 20, 2005
Grant date	Apr 23, 2013
Priority date	—
Expiry date	Jul 21, 2029

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC07C67/303
WIPO fieldOrganic fine chemistry
WIPO sectorChemistry

Abstract

The invention relates to the (stereoselective) hydrogenation of carbon-carbon double bonds in compounds having at least one such bond, e.g., isoprenoids, non-cyclic sesquiterpenes, tocomonoenols, tocodienols, tocotrienols or derivatives thereof, as well as to the (stereoselective) hydrogenation of parts/extracts of plant oils containing such tocotrienols or derivatives thereof, in the presence of a chiral Ir complex as the catalyst, whereby preferably one stereoisomer is manufactured in an excess.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.