Used as a chiral auxiliary or intermediate in asymmetric synthesis, particularly in the preparation of enantiomerically pure sulfonamides and sulfoxides. Its rigid cyclic structure and stereochemical stability make it valuable in controlling stereochemistry during carbon–carbon bond formation or functional group transformations. Commonly employed in medicinal chemistry for the development of bioactive molecules where stereoselectivity is critical. The tert-butyl groups enhance lipophilicity and steric shielding, which can improve reaction selectivity and stability under various reaction conditions.