Used as a key reagent in Suzuki-Miyaura cross-coupling reactions, enabling the formation of carbon-carbon bonds in organic synthesis. Its structure supports efficient transmetalation, making it valuable for constructing aryl alkenes in pharmaceuticals, agrochemicals, and advanced materials. The (E)-alkenylboronate functionality provides high stereoselectivity and stability, allowing for selective coupling under mild conditions. Commonly employed in late-stage functionalization where functional group tolerance is essential.