Used in organic synthesis as a building block for pharmaceuticals, particularly in the development of protease inhibitors and targeted cancer therapies. Its boronic acid group enables Suzuki-Miyaura cross-coupling reactions, making it valuable in creating biaryl compounds for drug discovery. Also serves as a key intermediate in synthesizing enzyme inhibitors due to its ability to mimic transition states in peptide bond hydrolysis. Commonly employed in the preparation of covalent inhibitors that bind irreversibly to active site residues in enzymes.