Used as a chiral ligand in asymmetric catalysis, particularly in transition metal-catalyzed enantioselective reactions. Its rigid dinaphthophosphepine backbone and chiral amine substituents make it effective for inducing high enantioselectivity in hydrogenation and cross-coupling reactions. Commonly employed in the synthesis of optically active pharmaceuticals and fine chemicals where stereochemical control is critical. The bromine at position 11 allows for further functionalization or tuning of electronic properties for specific catalytic systems.