Used as a protected form of 1,2,5-triazaspiro[2.3]hex-1-ene, this compound serves as a key intermediate in the synthesis of nitrogen-rich heterocyclic systems. Its primary application lies in medicinal chemistry, where it acts as a building block for developing bioactive molecules, particularly in the design of enzyme inhibitors and receptor modulators. The tert-butyloxycarbonyl (Boc) protection allows for selective deprotection under mild acidic conditions, enabling controlled stepwise synthesis in peptide-like frameworks or functionalized amines. It is also employed in the preparation of novel spirocyclic scaffolds, which are of interest in drug discovery due to their three-dimensional complexity and potential for improved selectivity and metabolic stability.