Used as a key reagent in Suzuki-Miyaura cross-coupling reactions, enabling the formation of carbon-carbon bonds in the synthesis of complex organic molecules. Particularly valuable in pharmaceutical and agrochemical research for constructing biaryl systems and heterocyclic frameworks. Its boronic ester group offers improved stability and handling compared to the corresponding boronic acid, making it suitable for multi-step syntheses and library production in drug discovery. Also employed in materials science for the preparation of conjugated polymers and organic electronic materials.