Used as a key intermediate in the synthesis of pharmaceutical compounds, particularly in the development of kinase inhibitors for cancer treatment. Its boronic acid functional group enables Suzuki-Miyaura cross-coupling reactions, allowing for the formation of carbon-carbon bonds in complex organic molecules. Commonly employed in medicinal chemistry for constructing biaryl structures found in bioactive molecules. Also utilized in the preparation of proteasome inhibitors and other targeted therapies due to its stability and reactivity profile in coupling reactions.