Used as a chiral catalyst ligand in asymmetric synthesis, particularly in enantioselective transformations such as hydrogenation and cross-coupling reactions. Its sterically hindered, electron-rich structure enhances selectivity and reactivity with transition metals like palladium, rhodium, and iridium. Widely applied in pharmaceutical and fine chemical industries to produce single-enantiomer compounds, where high optical purity is critical. The trifluoromethanesulfonamide group improves stability and coordination ability, making it effective under demanding reaction conditions.