Used as a chiral ionic liquid and asymmetric catalyst in organic synthesis, particularly in enantioselective transformations. Its structure supports phase-transfer catalysis, enabling efficient control of stereochemistry in alkylation, Michael addition, and epoxidation reactions. Commonly applied in pharmaceutical intermediates synthesis where high enantiomeric excess is required. Also serves as a solvent or additive in biphasic reaction systems due to ionic character and thermal stability.