Separate table and figure from Catalyst-free decarboxylation of 4-hydroxycinnamic acids: efficient synthesis of 4-vinylphenols

We report herein an efficient protocol for the synthesis of 4-vinylphenols by a catalyst-free decarboxylation of <i>trans</i>-4-hydroxycinnamic acids. A variety of 4-vinylphenols has been synthesized in moderate to excellent yields. This protocol also features no polymerization.