Used as a chiral ligand in asymmetric catalysis, particularly in enantioselective organic transformations. Its rigid naphthyl groups provide steric bulk and π-π interactions that enhance stereocontrol in reactions such as asymmetric transfer hydrogenation of ketones and imines. Commonly employed with ruthenium, rhodium, or iridium metal centers to form catalytically active complexes. Valued for high enantioselectivity in the synthesis of chiral alcohols and amines, which are key intermediates in pharmaceuticals and fine chemicals. Soluble in polar organic solvents, making it suitable for homogeneous catalytic systems.