Used as a chiral organocatalyst in asymmetric synthesis, particularly in enantioselective alkylation and cyclization reactions. Its rigid bicyclic structure and positive charge enhance selectivity and reactivity in promoting carbon-carbon and carbon-heteroatom bond formations. Commonly applied in pharmaceutical research for constructing stereocenters in complex molecules, especially in the development of bioactive compounds where high enantiomeric purity is required. Soluble in polar aprotic solvents, making it suitable for use in non-aqueous reaction conditions. The tetrafluoroborate counterion contributes to stability and ease of handling under ambient conditions.