This chemical is widely used in organic synthesis, particularly in the Wittig reaction, where it serves as a key reagent for the formation of alkenes. It reacts with aldehydes and ketones to produce α,β-unsaturated esters, which are valuable intermediates in the synthesis of pharmaceuticals, agrochemicals, and fine chemicals. Additionally, it is employed in the preparation of conjugated systems and complex organic molecules, making it a versatile tool in synthetic chemistry. Its stability and reactivity under mild conditions make it a preferred choice for constructing carbon-carbon double bonds in various research and industrial applications.