Used as a chiral ligand in asymmetric catalysis, particularly in transition metal-catalyzed reactions such as asymmetric hydrogenation and cross-coupling reactions. Its steric bulk and well-defined chiral environment enable high enantioselectivity in the synthesis of complex organic molecules, making it valuable in pharmaceutical and fine chemical industries for producing single-enantiomer compounds. The tert-butyl and sulfinamide groups enhance stability and chirality transfer, while the phosphine moiety coordinates effectively with metals like palladium, rhodium, and ruthenium.