Used as a chiral intermediate in the synthesis of biologically active compounds, particularly in pharmaceuticals targeting central nervous system disorders. Its protected amine and ester functionalities allow for selective coupling reactions, making it valuable in peptide-based drug development. The presence of a trifluoromethylsulfonyloxy leaving group enables palladium-catalyzed cross-coupling reactions, facilitating the construction of complex aromatic frameworks. Commonly employed in the preparation of enzyme inhibitors and receptor modulators where stereochemistry is critical for activity.