Used in asymmetric catalysis as a chiral ligand for transition metal-catalyzed reactions, particularly in enantioselective transformations such as hydrogenation and C–C bond formation. Its rigid dinaphthyl backbone and stereogenic center enhance stereocontrol, making it valuable in the synthesis of optically active pharmaceuticals and fine chemicals. Commonly employed in palladium- and rhodium-catalyzed processes where high enantioselectivity is required.