Enantioselective Rhodium-Catalyzed Hydrogenation of ( Z )- N -Sulfonyl-α-dehydroamido Boronic Esters.

Highly enantioselective rhodium-catalyzed hydrogenation of ( Z )- N -sulfonyl-α-dehydroamido boronic esters is realized for the first time using a JosiPhos-type ligand. This method has enabled convenient synthesis of a series of enantio-enriched N -sulfonyl-α-amido boronic esters in good yields and excellent enantioselectivities (up to 99% ee).