Used as an intermediate in organic synthesis, particularly in the preparation of heterocyclic compounds and pharmaceuticals. It serves as a building block in the development of bioactive molecules due to its ability to undergo cyclization and condensation reactions. Commonly employed in the synthesis of amides, imines, and nitrogen-containing rings. Its tosyl group acts as a good leaving group, facilitating nucleophilic substitution reactions. Also utilized in the design of enzyme inhibitors and in medicinal chemistry for constructing complex drug-like structures.