Used as a key intermediate in the synthesis of pharmaceutical compounds, particularly in the development of kinase inhibitors for cancer treatment. Its boronic ester functionality enables efficient Suzuki-Miyaura cross-coupling reactions, allowing for the construction of complex biaryl structures in drug molecules. The presence of the pyrrolidinyl group enhances solubility and binding selectivity, making it valuable in optimizing drug potency and pharmacokinetic properties. Commonly employed in medicinal chemistry research for lead optimization and library synthesis.