[bis(acetoxy)iodo]benzene; [Ru(p-cymene)(MesCO2)2]; trifluoroacetic acid; trifluoroacetic anhydride T=120°C; 30 h;

tetrabutyl ammonium fluoride; dihydrogen peroxide; potassium hydrogencarbonate in tetrahydrofuran; methanol; water T=20°C; 16 h; Inert atmosphere;

1: With sec.-butyllithium in tetrahydrofuran; hexane T=-78°C; Metallation; 1 h; 2: in tetrahydrofuran; hexane T=-78 - 20°C; Rearrangement; Anionic ortho-Fries rearrangement; 12 h; Further stages.;

water; sodium hydroxide in 1,4-dioxane T=75°C; 20.5 h;