How is 4-Vinylphenol (CAS: 2628-17-3) typically synthesized?

4-Vinylphenol (CAS: 2628-17-3) is commonly synthesized via the reduction of 4-chlorophenyl vinyl ether using sodium borohydride as the reducing agent. The reaction is carried out in dichloromethane under mild conditions, providing good yield and selectivity. Other methods include the reaction of 4-hydroxybenzaldehyde with acetylene or the alkylation of phenol with vinyl chloride.