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:
May. 03, 1994
Filed:
Jul. 14, 1993
Benoit Pugin, Munchenstein, CH;
Felix Spindler, Starrkirch-Wil, CH;
Manfred Muller, Dagmersellen, CH;
Ciba-Geigy Corporation, Ardsley, NY (US);
Abstract
Compounds where a solid carrier material which contains diphosphine rhodium or iridium complexes fixed on the surface thereof, of which the carrier material has the formula IV or IVa: ##STR1## wherein Y denotes two monoolefin ligands or a diene ligand, M is Ir(I) or Rh(i), Z is --Cl, --Br or -I, A.crclbar. is the anion of an oxyacid or complex acid, T is a solid carrier material, r is 0, 1 or 2, and R.sub.1, R.sub.2, R.sub.3, R.sub.4 and R.sub.5 are as defined in claim 1. These materials are heterogeneous and separable catalysts for the asymmetrical hydrogenation of prochiral compounds containing carbon double bonds or carbon/hetero atom double bonds, for example ketones and imines.