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US 4,397,787 AGranted
Rhodium complexes containing chiral phosphine ligands useful as hydrogenation catalysts
AssigneeThe Procter & Gamble Company
InventorDennis P. Riley
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Abstract
Rhodium (1) complexes containing the chiral phosphine ligand (R)-1,2-bis(diphenylphosphino)-1-cyclohexylethane which are useful as chiral hydrogenation catalysts. These catalysts are especially useful in the chiral hydrogenation of alpha-acylamido acrylic acids.
Claims9
A compound of the formula ##STR25## wherein M is a transition metal, R is a chelating diene, R.sub.1 is cyclohexyl, and A.sup.- is a non-coordinating anion.
Dependencies are inferred from the claim text.