Widely used as a chiral ligand in asymmetric catalysis, this compound plays a key role in enantioselective transformations such as hydrogenation, carbon-carbon bond formation, and cross-coupling reactions. Its rigid bipyridine backbone and stereogenic phosphine centers enable high stereocontrol, making it valuable in the synthesis of pharmaceuticals and fine chemicals where specific enantiomers are required. It is particularly effective in transition metal-catalyzed reactions, enhancing both activity and selectivity of the catalyst.