Used as a key reagent in Suzuki-Miyaura cross-coupling reactions, enabling the formation of carbon-carbon bonds in organic synthesis. Its Z-configured alkenylboron structure allows for stereoselective construction of complex molecules, particularly in pharmaceuticals and agrochemicals where precise geometry is critical. The trifluoroborate group enhances stability and handling compared to boronic acids, while the bromine atom provides a reactive site for palladium-catalyzed coupling. Commonly applied in the synthesis of bioactive alkenes and natural product derivatives.