Used as an intermediate in the synthesis of pharmaceuticals, particularly in the development of bioactive molecules requiring spirocyclic amine scaffolds. Its protected amine functionality allows for selective reactions in multi-step organic syntheses. Commonly employed in medicinal chemistry for constructing kinase inhibitors and central nervous system agents. The tert-butyl carbamate (Boc) group enables easy deprotection under mild acidic conditions, making it suitable for peptide-like coupling and heterocycle formation. Also applied in the preparation of ligands for catalysis and in the design of novel receptor modulators.