Abstract
Naphthalenes bearing two acetal moieties connected by a methylene-2,1-phenylene group underwent regioselective tandem cycloaromatization using a catalytic amount of trifluoromethanesulfonic acid in 1,1,1,3,3,3-hexafluoropropan-2-ol. Five substrates were successfully employed in this protocol to afford ortho-fused six-hexagon benzenoids with high selectivities and in excellent yields.
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