Asymmetric catalysis

Details Asymmetric catalysis Asymmetric catalysis

C - Chemistry, Metallurgy

07

F

260/516, 260/525

C07F 15/00 (2006.01) B01J 31/24 (2006.01) C07F 9/50 (2006.01)

Patent

CA 1051912

ABSTRACT OF THE DISCLOSURE The present invention provides a coordinated complex catalyat useful in homogeneous reactions comprising a transition metal selected from the group consisting of rhodium, iridium and ruthenium in combination with from about 0.5 to about 2.0 moles per mole of metal of an optically active bis phosphine ligand charactcrized by the structural formula Image wherein A and B each independently represent substituted and unsubstituted alkyl of from 1 to 12 carbon atoms, substituted and unsubstituted cycloalkyl having from 4 to 7 carbon atoms, substituted and unsubstituted aryl; provided that such substituents provide no significant interference with the steric requirements around the phosphorus atom and A and B are different. The catalyst may be employed in a process for catalytically asymmetrically hydrogenating a .beta.-substituted-.alpha.-acylamido-acrylic acid and/or its salts, esters or amides.

215181

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