1: With lithium diisopropyl amide in tetrahydrofuran; hexane T=-78°C; 0.5 h; 2: With boric acid trimethyl ester in tetrahydrofuran; hexane T=-78 - 20°C; 1 h; 3: With sodium hydrogencarbonate in tetrahydrofuran; hexane

dihydrogen peroxide; acetic acid in ethanol; water; ethyl acetate T=35°C; 3 h;

sodium carbonate; tetrakis(triphenylphosphine) palladium(0) in ethanol; water; toluene Suzuki coupling; 6 h; Heating;

sodium carbonate; tetrakis(triphenylphosphine) palladium(0) in ethanol; water; toluene Suzuki coupling; 6 h; Heating;