4Methoxystyrene

4-Methoxystyrene is an organic compound with the chemical formula C9H10O. It is a substituted styrene, where a methoxy group (OCH3) is attached to the para position of the phenyl ring. This compound is a colorless liquid at room temperature and has a characteristic odor.

4-Methoxystyrene is primarily used as a monomer in the production of polymers. Its polymerization can occur through free radical, anionic, or cationic mechanisms, similar to other styrene derivatives. The resulting polymers, poly(4-methoxystyrene), exhibit unique properties influenced by the presence of the methoxy substituent. These polymers can find applications in areas such as coatings, adhesives, and specialty plastics, although they are generally less common than polymers derived from unsubstituted styrene.

The synthesis of 4-methoxystyrene typically involves the dehydration of 1-(4-methoxyphenyl)ethanol or the Wittig reaction involving 4-methoxybenzaldehyde. It is important to handle 4-methoxystyrene with care as it can be irritating to the skin and eyes. Like other vinyl monomers, it can undergo polymerization upon exposure to heat, light, or initiators, and is often stored with inhibitors to prevent premature polymerization.