Gallium(III) Chloride Catalyzed Hydroarylation of Arylacetylenes with Naphthols and Phenols: A Facile Synthesis of Vinylarenes

Abstract

Arylacetylenes undergo smooth hydroarylation with naphthols and phenols in the presence of 10 mol% of gallium(III) chloride in refluxing toluene to afford the corresponding 2-vinylnaphthols and -phenols in good yields with high regioselectivity. Similarly, styrenes undergo hydroarylation with naphthols and phenols to provide substituted naphthols and phenols.