Used as a chiral bidentate phosphine ligand in asymmetric catalysis, particularly in rhodium- and ruthenium-catalyzed enantioselective hydrogenation reactions. It is effective for the reduction of prochiral olefins, ketones, and imines, delivering high enantioselectivity in the synthesis of chiral pharmaceutical intermediates and fine chemicals. Its sterically hindered, electron-rich structure enhances catalytic activity and stereocontrol. Commonly applied in the production of optically active compounds in academic research and industrial asymmetric synthesis.