in tetrahydrofuran T=0°C; 0.5 h;

1.1: diethylzinc / toluene / 3 h / Reflux 1.2: 1 h 1.3: 4 h / 20 °C 2.1: zinc / methanol; water / 22 h / 20 °C 3.1: triethylamine / dichloromethane / 2.17 h / -78 - 20 °C 4.1: tetrabutyl ammonium fluoride / tetrahydrofuran / 0.83 h / -10 °C 5.1: di-isopropyl azodicarboxylate; triphenylphosphine / tetrahydrofuran / 1.08 h / 20 °C 6.1: (NH4)6[Mo7O24]*4H2O; dihydrogen peroxide / ethanol; water / 3 h / 20 °C 7.1: 1-tert-butyl-4,4,4-tris(dimethylamino)-2,2-bis[tris(dimethylamino)-phosphoranylidenamino]-2Λ54Λ5-catenadi(phosphazene) / hexane; acetonitrile / 2.08 h / -40 - 20 °C 8.1: 2,6-dimethylpyridine; trimethylsilyl trifluoromethanesulfonate / dichloromethane / 1 h / -20 °C 8.2: -20 - 20 °C 9.1: sodium chlorite; sodium dihydrogenorthophosphate / 2-methyl-but-2-ene; water; tert-butyl alcohol / 0 - 20 °C 10.1: tetrabutyl ammonium fluoride / tetrahydrofuran / 0 - 20 °C View Scheme

1-hydroxy-3H-benz[d][1,2]iodoxole-1,3-dione in tetrahydrofuran; diethyl ether; dimethyl sulfoxide T=0 - 20°C;

Dess-Martin periodane in dichloromethane T=20°C; 0.5 h;

1.1: Dess-Martin periodinane / CH2Cl2 / 1 h / 20 °C 2.1: NaHMDS / tetrahydrofuran; toluene / 2 h / 20 °C 2.2: 76 percent / tetrahydrofuran; toluene / -90 - 20 °C 3.1: aq. FeCl3 / acetone / 0.67 h / 40 °C View Scheme

1.1: NaHMDS / tetrahydrofuran; toluene / 2 h / 20 °C 1.2: 76 percent / tetrahydrofuran; toluene / -90 - 20 °C 2.1: aq. FeCl3 / acetone / 0.67 h / 40 °C View Scheme

1.1: diethylzinc / toluene / 3 h / Reflux 1.2: 1 h 1.3: 4 h / 20 °C 2.1: zinc / methanol; water / 22 h / 20 °C 3.1: triethylamine / dichloromethane / 2.17 h / -78 - 20 °C 4.1: tetrabutyl ammonium fluoride / tetrahydrofuran / 0.83 h / -10 °C 5.1: di-isopropyl azodicarboxylate; triphenylphosphine / tetrahydrofuran / 1.08 h / 20 °C 6.1: (NH4)6[Mo7O24]*4H2O; dihydrogen peroxide / ethanol; water / 3 h / 20 °C 7.1: 1-tert-butyl-4,4,4-tris(dimethylamino)-2,2-bis[tris(dimethylamino)-phosphoranylidenamino]-2Λ54Λ5-catenadi(phosphazene) / hexane; acetonitrile / 2.08 h / -40 - 20 °C 8.1: 2,6-dimethylpyridine; trimethylsilyl trifluoromethanesulfonate / dichloromethane / 1 h / -20 °C 8.2: -20 - 20 °C 9.1: sodium chlorite; sodium dihydrogenorthophosphate / 2-methyl-but-2-ene; water; tert-butyl alcohol / 0 - 20 °C 10.1: tetrabutyl ammonium fluoride / tetrahydrofuran / 0 - 20 °C View Scheme

lithium aluminium tetrahydride in tetrahydrofuran T=-70 - -20°C;