Used as a key intermediate in organic synthesis, particularly in pharmaceutical and agrochemical manufacturing. Its ester functionality and reactive alkene group allow for further transformations such as hydrogenation, oxidation, and cross-coupling reactions. Commonly employed in the preparation of gamma-unsaturated carbonyl compounds and heterocyclic derivatives. Also utilized in polymer chemistry to introduce functional side chains in specialty monomers. Its tert-butyl ester group offers stability under various reaction conditions and can be selectively deprotected when needed.