Used as a versatile reagent in organic synthesis, particularly in the preparation of enol ethers and vinyl ethers. It serves as an ethylating agent for active methylene compounds and facilitates the formation of carbon-carbon double bonds. Commonly employed in the synthesis of heterocyclic compounds, including pyrimidines and other nitrogen-containing rings, which are important in pharmaceuticals and agrochemicals. Also utilized in the production of dyes and specialty intermediates due to its ability to introduce dimethylaminovinyl or ethoxyvinyl groups. Its reactivity makes it valuable in the development of fine chemicals and in research laboratories for constructing complex molecular frameworks.