Highly efficient iridium-catalyzed asymmetric hydrogenation of ß-acylamino nitroolefins.

The first highly efficient Ir-catalyzed enantioselective hydrogenation of ß-acylamino nitroolefins is reported. This reaction provides straightforward access to chiral ß-amino nitroalkanes in high yields and excellent enantioselectivities (up to >99.9% ee) catalyzed by an Ir-(R,R)-f-spiroPhos complex.