Used as a chiral auxiliary in asymmetric synthesis, enabling high stereoselectivity in carbon-carbon bond-forming reactions. It is particularly effective in enolate alkylations and Diels-Alder reactions, where it controls the spatial arrangement of molecules to produce desired enantiomers. After serving its role, it can be cleaved and recovered, making it valuable in the synthesis of complex natural products and pharmaceuticals. Its rigid bicyclic structure enhances stereocontrol, improving yield and purity in enantioselective processes.