Used as a chiral auxiliary in asymmetric synthesis, particularly in enantioselective carbon-carbon bond-forming reactions. It helps control stereochemistry during alkylation, aldol, and Michael addition reactions, enabling the production of optically active intermediates important in pharmaceutical synthesis. Its structure facilitates high stereoselectivity and can be recycled after the reaction, making it efficient for large-scale applications. Commonly employed in the preparation of beta-substituted carbonyl compounds with high enantiomeric purity.