Used as a chiral ligand in asymmetric catalysis, particularly in enantioselective transformations such as hydrogenation and cross-coupling reactions. Its rigid dinaphthyl backbone and stereogenic centers enable high enantioselectivity when coordinated to transition metals like palladium, rhodium, or iridium. Commonly employed in the synthesis of pharmaceutical intermediates and fine chemicals where control of stereochemistry is critical. The bromine and iodine substituents allow further functionalization or tuning of electronic properties for specific catalytic systems.