Used as a chiral catalyst or ligand precursor in asymmetric synthesis, particularly in transition-metal-catalyzed reactions where high enantioselectivity is required. Its rigid dinaphthyl backbone and phosphorus center make it effective in promoting stereoselective transformations such as hydrogenations, cross-couplings, and C–H activation reactions. The triflimide group enhances stability and influences electronic properties, while the triethylamine adduct improves solubility and handling in organic solvents. Commonly applied in pharmaceutical and fine chemical synthesis to construct chiral centers with high optical purity.