Used as a highly selective ligand in asymmetric catalysis, particularly in transition metal-catalyzed reactions such as palladium-catalyzed cross-couplings and enantioselective transformations. Its sterically demanding and electron-rich structure enhances catalytic efficiency and enantiocontrol. Commonly employed in the synthesis of chiral pharmaceuticals and fine chemicals where high enantiomeric excess is required. Also utilized in advanced materials research due to its rigid aromatic framework and stability under harsh reaction conditions.