Synthesis of tetra- and pentasubstituted benzenes from dimedone and derivatives

Article abstract of DOI:10.1055/s-1992-26360

Treatment of dimedone (5,5-dimethylcyclohexane-1,3-dione) and derivatives with one molar equivalent of sulfuric acid in trifluoroacetic anhydride leads, via sulfonation and a 1,2-methyl group migration, to a variety of dimethylresorcinol derivatives. The