1-Phenyl-1-hexyne is primarily used in organic synthesis as a building block for more complex molecules. It serves as a key intermediate in the production of pharmaceuticals, agrochemicals, and specialty chemicals. Its alkyne functional group makes it valuable in click chemistry reactions, particularly in the formation of triazoles, which are important in drug discovery and material science. Additionally, it is utilized in the synthesis of conjugated polymers and organic electronic materials due to its ability to participate in polymerization reactions. In research, it is often employed to study reaction mechanisms involving alkynes and to develop new catalytic processes.