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:
Oct. 10, 1978
Filed:
Jun. 25, 1976
William S Knowles, St. Louis, MO (US);
Milton J Sabacky, Ballwin, MO (US);
Monsanto Company, St. Louis, MO (US);
Abstract
Process for the homogeneous catalytic hydrogenation of olefins, capable of existing as enantiomorphs upon hydrogenation of the olefinic bond, which yields on hydrogenation an optically active mixture. The process comprises the hydrogenation of the olefin in the presence of an optically active coordinated metal hydrogenation catalyst, in which the metal is selected from the group consisting of rhodium, iridium, ruthenium, osmium, palladium and platinum. This process is a generalized process for any asymmetric hydrogenation of olefins in which one optical enantiomorph is desired. It is also a generalized process for the selective hydrogenation of olefins in the presence of other reactive groups which are easily hydrogenated. It is especially useful for the preparation of natural products which possess optical activity, such as amino acids, and for products such as flavors, fragrances which may require optical activity for their utilitization. This invention also relates to new optically active coordinated hydrogenation catalysts.