Used as a key reagent in organic synthesis, particularly in cycloaddition and coupling reactions. It serves as an electrophilic alkyne component in click chemistry, enabling the formation of complex molecular architectures. Commonly employed in the preparation of heterocyclic compounds and functionalized esters for pharmaceuticals and agrochemicals. Its reactivity with nucleophiles and participation in metal-catalyzed reactions make it valuable for constructing carbon-carbon bonds. Also utilized in the development of conjugated systems for materials science applications.