Efficient asymmetric hydrogenation of (Z)-2-acetamidocinnamic acid catalyzed by the rhodium complex of modified n-Benzyl-(3R,4R)-3,4-bis(diphenylphosphino)pyrrolidine (degphos)
Modified Degphoses (R,R)-MOD-, XYL-Degphos) have been prepared and catalytic asymmetric hydrogenetion of (Z)-2-acetamidocinnamic acid was carried out with their rhodium(]) cationic complexes. The catalytic activities of the modified Degphoses were enhanced.