Used as a chiral catalyst ligand in asymmetric synthesis, particularly in enantioselective transformations such as hydrogenation and cross-coupling reactions. Its rigid dinaphthophosphepine backbone and stereogenic centers enable high enantioselectivity. Commonly employed in pharmaceutical synthesis where precise stereochemistry is critical. The bromo groups allow for further functionalization or tuning of electronic properties. Effective in palladium- and rhodium-catalyzed reactions, enhancing catalytic activity and stereocontrol.