Used as a chiral bidentate phosphine ligand in asymmetric catalysis, particularly in transition metal-catalyzed enantioselective reactions. Its sterically hindered, electron-rich structure makes it effective in promoting high enantioselectivity in hydrogenation, cross-coupling, and C–H activation reactions. Commonly employed in the synthesis of pharmaceuticals and fine chemicals where precise stereochemical control is required. The ligand's rigid backbone and defined stereochemistry enhance catalyst stability and selectivity under various reaction conditions.