Used as a chiral ligand in asymmetric catalysis, particularly in transition metal-catalyzed reactions such as asymmetric hydrogenation and cross-coupling reactions. Its rigid, sterically hindered structure enables high enantioselectivity in the synthesis of chiral molecules, making it valuable in pharmaceutical and fine chemical industries for producing single-enantiomer compounds. The phosphorus center coordinates with metals like rhodium, ruthenium, or palladium, forming catalytically active complexes. Its naphthyl groups enhance π-stacking interactions and steric control, improving selectivity in complex transformations. It exhibits a certain degree of stability towards air and moisture, facilitating easy handling in typical reaction conditions.