Asymmetric Homogeneous Hydrogenation of α-Dicarbonyls using new Rhodium Catalyst

Abstract

Asymmetric homogeneous hydrogenations of  α-keto esters and
α-keto amides of the types PhCOCO₂ME,  PhCOCO₂Et,
PhCOCONHCH₂Ph,  PhCH₂CH₂COCO₂Et and PhCOCONEt₂ have
been carried out under mild conditions using new  cationic rhodium
catalyst (6) with cyclohexylated diphosphine ligand.