Used as a highly effective chiral ligand in asymmetric catalysis, particularly in enantioselective transformations such as hydrogenation and C–C bond-forming reactions. Its sterically bulky structure enhances stereocontrol, making it valuable in the synthesis of optically active pharmaceuticals and fine chemicals. The phosphorus center, combined with rigid naphtho frameworks, provides a well-defined chiral environment that improves enantioselectivity in transition metal-catalyzed reactions. Commonly employed with rhodium, ruthenium, or palladium complexes to achieve high catalytic efficiency and selectivity.