Used as a chiral ligand in asymmetric catalysis, particularly in transition metal-catalyzed reactions. Enables high enantioselectivity in transformations such as asymmetric hydrogenation and C–C bond formation. Its spirocyclic structure and bulky tert-butyl groups enhance stereocontrol and catalyst stability. Commonly applied in pharmaceutical synthesis where precise chirality is critical. Effective in palladium and rhodium complexes for producing enantiopure intermediates.