Used in organic synthesis as a versatile building block for the creation of complex molecules, particularly in pharmaceutical research. Its structure allows for the introduction of azetidine rings, which are valuable in drug design due to their conformational rigidity and potential biological activity. The ethynyl group enables further functionalization through click chemistry, making it useful in the development of targeted therapies and bioactive compounds. Additionally, it serves as a precursor in the synthesis of various heterocycles, which are important in medicinal chemistry for their diverse pharmacological properties.