Used as a chiral ligand in asymmetric catalysis, particularly in transition metal-catalyzed reactions such as asymmetric hydrogenation and cross-coupling transformations. Its rigid backbone and sterically hindered phosphine groups enhance enantioselectivity, making it valuable in the synthesis of optically active pharmaceuticals and fine chemicals. Effective with metals like rhodium, ruthenium, and palladium, it enables high catalytic activity and stereochemical control under mild conditions.