This chemical is primarily utilized as a chiral ligand in asymmetric catalysis, particularly in transition metal-catalyzed reactions. It plays a significant role in facilitating enantioselective transformations, such as hydrogenation, allylic alkylation, and cross-coupling reactions. Its unique structure, featuring both a diphenylphosphino group and a phthalazine moiety, allows for effective coordination with metal centers, enhancing stereocontrol in the synthesis of chiral molecules. This makes it valuable in the production of pharmaceuticals, agrochemicals, and fine chemicals where high enantiomeric purity is crucial. Additionally, its application extends to the development of novel catalytic systems for organic synthesis, contributing to advancements in green and sustainable chemistry practices.