Used as a chiral ligand in asymmetric catalysis, particularly in transition metal-catalyzed reactions such as hydrogenation and cross-coupling. Its phosphine-oxazoline structure provides excellent stereocontrol, making it valuable in the synthesis of enantiomerically pure pharmaceuticals and fine chemicals. The tert-butyl and diphenylphosphino groups enhance steric bulk and electron density, improving catalytic activity and selectivity. Commonly employed with palladium, rhodium, or iridium complexes in homogeneous catalysis.