Used as a key intermediate in pharmaceutical synthesis, particularly in Suzuki-Miyaura cross-coupling reactions to construct biologically active molecules. Its azetidine ring is valuable for enhancing metabolic stability and solubility in drug candidates. The tert-butoxycarbonyl (Boc) protecting group ensures compatibility with multi-step synthetic routes, allowing controlled deprotection and further functionalization. Commonly employed in the development of protease inhibitors, kinase inhibitors, and other therapeutic agents where small, rigid ring systems improve target binding and pharmacokinetic properties.