Used as a chiral ligand in asymmetric catalysis, particularly in transition metal-catalyzed reactions such as asymmetric hydrogenation and cross-coupling. Its rigid, sterically hindered structure enhances enantioselectivity, making it valuable in the synthesis of optically active pharmaceuticals and fine chemicals. The phosphine group binds strongly to metals like palladium, rhodium, or ruthenium, while the sulfinamide moiety contributes to stereocontrol. Effective in low catalyst loadings, it enables high yield and ee in the production of chiral intermediates.