Used as a chiral catalyst in asymmetric synthesis, particularly in enantioselective transformations where high stereocontrol is required. Its rigid polycyclic framework and defined phosphorus center make it effective in promoting reactions such as asymmetric allylic alkylation and cross-coupling processes. Commonly employed in pharmaceutical synthesis to construct chiral intermediates with high optical purity. Also utilized in advanced materials research due to its stable aromatic structure and electronic properties.