Used as a chiral catalyst ligand in asymmetric synthesis, particularly in enantioselective transformations such as C–C bond-forming reactions. Its rigid dinaphthyl backbone and phosphorus center with tunable electronic properties make it effective in promoting high enantioselectivity in metal-catalyzed reactions. Commonly employed in palladium- or rhodium-catalyzed asymmetric allylic substitutions and cross-coupling reactions, especially in the pharmaceutical industry for synthesizing optically active intermediates. The trifluoromethanesulfonamide group enhances stability and influences coordination behavior with metals, improving catalytic efficiency and selectivity.