One-pot synthesis of 3,5-disubstituted and polysubstituted phenols from acyclic precursors.

A new strategy for the synthesis of 3,5-disubstituted phenols is established through one-pot Robinson annulation of α,ß-unsaturated ketones with α-fluoro-ß-ketoesters followed by in situ dehydrofluorination and tautomerization. This method has been extended to the synthesis of polysubstituted phenols and applied in the preparation of biologically active compounds.