2-((Trimethylsilyl)ethynyl)aniline is primarily used in organic synthesis as a building block for more complex molecules. Its structure, featuring both an aniline group and a trimethylsilyl-protected alkyne, makes it valuable in the development of pharmaceuticals, agrochemicals, and advanced materials. The compound is often employed in cross-coupling reactions, such as Sonogashira coupling, to create carbon-carbon bonds, which are essential in constructing conjugated systems for organic electronics or fluorescent dyes. Additionally, the trimethylsilyl group can be easily removed, allowing further functionalization of the alkyne moiety. This versatility makes it a useful intermediate in the synthesis of heterocycles, polymers, and bioactive compounds.