Used as a chiral ligand in asymmetric catalysis, particularly in enantioselective organic transformations such as cyclopropanation, Diels-Alder, and aldol reactions. Its rigid, C2-symmetric structure enhances stereocontrol, making it valuable in the synthesis of optically active pharmaceuticals and fine chemicals. Commonly coordinates with transition metals like copper or rhodium to form highly selective catalysts. Preferred in reactions where high enantiomeric excess is required.