Used as a chiral auxiliary and intermediate in organic synthesis, particularly in the preparation of enantiomerically pure compounds. Its structure supports asymmetric induction during key bond-forming reactions, making it valuable in pharmaceutical synthesis where stereochemistry is critical. Commonly employed in the development of bioactive molecules, including protease inhibitors and other medicinal agents. The tert-butyl group enhances stability and ease of removal under mild acidic conditions, allowing for efficient deprotection without disrupting sensitive functional groups in complex molecules.