Optically active diphosphine compound, production intermediate thereof, transition metal complex containing the compound as ligand and asymmetric hydrogenation catalyst containing the complex

摘要

This invention provides a novel diphosphine compound which is useful as a ligand of catalysts for asymmetric synthesis reactions, particularly asymmetric hydrogenation reaction. Particularly, it provides a diphosphine compound represented by a general formula (1):wherein R1 and R2 each independently represents a cycloalkyl group, an unsubstituted or substituted phenyl group or a five-membered aromatic heterocycle residue.