Abstract
We have prepared a novel pseudorotaxane molecule which works as a chiral bidentate ligand having a phosphine moiety in an axle and a phosphite moiety in a wheel as two coordination sites and applied it successfully to the rhodium-catalyzed enantioselective hydrogenation of enamides (up to 96% ee). To the best of our knowledge, this is the first successful example of the use of the pseudorotaxane molecule as a chiral ligand for homogeneous transition-metal-catalyzed asymmetric reactions.
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