Transition metals elements asymmetric hydrogenation

In 1980, Professor Noyori and the late H. Takaya consequently designed and synthesized a bidentate phosphine ligand BINAP (2,2 -bis(diphenylphosphino)-l,T-binaphthyl) 5, that contained an atropisomeric l,l -binaphthyl structure as a chiral element for use in transition metal catalyzed asymmetric hydrogenation reactions (Figure 1). 

Kumada et al. have examined a number of chiral ferrocenylphosphines as ligands for asymmetric reactions catalyzed by transition metals. They are of interest because they contain a planar element of chirality as well as an asymmetric carbon atom. They were first used in combination with rhodium catalysts for asymmetric hydrosilylation of ketones with di- and trialkylsilanes in moderate optical yields (5-50%). High stereoselectivity was observed in the hydrogenation of a-acetamidoacrylic acids (equation 1) with rhodium catalysts and ferrocenylphosphines. ... 

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