Asymmetric synthesis of optically active 3,7,11-trimethyl-dodecan-1-ol, an intermediate for producing optically active vitamin E, from isovaleraldehyde or prenal including intermediates in this synthesis.
ASYMMETRIC HYDROGENATION OF ALKENES USING CHIRAL IRIDIUM COMPLEXES
申请人:DSM IP Assets B.V.
公开号:EP1828159B1
公开(公告)日:2011-08-17
Asymmetric Hydrogenation of Alkennes Using Chiral Iridium Complexes
申请人:Bonrath Werner
公开号:US20080039638A1
公开(公告)日:2008-02-14
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.