Used as a reactive intermediate in organic synthesis, particularly in palladium-catalyzed cross-coupling reactions. It enables the introduction of the 1-phenylvinyl group into complex molecules, which is valuable in the construction of styrene derivatives and conjugated systems. Commonly employed in the synthesis of pharmaceuticals, agrochemicals, and functional materials where vinyl arene motifs are required. Its triflate leaving group makes it highly effective in catalytic transformations such as Heck, Suzuki, and other coupling reactions. Also utilized in the preparation of labeled compounds and in materials science for designing π-conjugated polymers.