Used primarily in organic synthesis as a chiral catalyst or intermediate in asymmetric reactions. Its unique bridged polycyclic structure with a bromo and mesityl substituent enables high stereoselectivity in cycloaddition and C–H functionalization reactions. Commonly employed in photoredox catalysis and transition-metal-catalyzed transformations where precise spatial control is required. The tetrafluoroborate counterion enhances solubility in polar aprotic solvents, making it suitable for use in homogeneous reaction conditions. Also explored in materials science for designing chiral luminescent compounds due to its rigid aromatic framework.