Used as a chiral ligand in asymmetric catalysis, particularly in enantioselective transition metal-catalyzed reactions. It plays a key role in promoting high stereoselectivity in carbon-carbon bond-forming reactions such as hydrogenation, allylic alkylation, and Diels-Alder reactions. Its rigid aromatic backbone and well-defined chiral environment make it effective for controlling the spatial orientation of substrates in the catalytic cycle. Commonly employed with metals like rhodium, ruthenium, and palladium to achieve high enantiomeric excess in the synthesis of pharmaceuticals and fine chemicals.