1.1: 1,8-diazabicyclo[5.4.0]undec-7-ene / acetone / 19 - 25 °C / |Inert atmosphere 1.2: 18 h / 20 - 25 °C 2.1: sulfur trioxide pyridine complex; N-ethyl-N,N-diisopropylamine / dichloromethane; dimethyl sulfoxide / 2 h / 6 - 12 °C / |Inert atmosphere 3.1: hydrogenchloride / acetonitrile; water / 4 h / 13 - 20 °C 4.1: carbon / ethyl acetate / 2 h / 20 °C 4.2: 1.5 h / 17 - 25 °C / 2250.23 Torr View Scheme

1.1: Dess-Martin periodane / dichloromethane / 5 h / 0 °C / |Inert atmosphere 2.1: sodium hydride / tetrahydrofuran; mineral oil / 0.5 h / 0 °C / |Inert atmosphere 2.2: 0.5 h / 26 °C / |Inert atmosphere 2.3: 20 h / 25 - 45 °C 3.1: carbon / ethyl acetate / 2 h / 25 - 40 °C 3.2: 20 - 25 °C / 1034.32 - 1292.9 Torr / |Inert atmosphere 4.1: potassium carbonate / methanol / 17 h / 25 - 35 °C / |Inert atmosphere 5.1: pyridinium p-toluenesulfonate / dichloromethane / 0.17 h / 25 °C / |Inert atmosphere 5.2: 16 h / 25 °C 6.1: methanol; sodium tetrahydroborate / tetrahydrofuran / 2 h / -15 - -10 °C / |Inert atmosphere 7.1: diisobutylaluminium hydride / toluene / 2 h / -65 - 70 °C 8.1: potassium tert-butylate / tetrahydrofuran / 0.5 h / 0 - 5 °C / |Inert atmosphere 8.2: 2 h / 0 - 5 °C 9.1: 1,8-diazabicyclo[5.4.0]undec-7-ene / acetone / 19 - 25 °C / |Inert atmosphere 9.2: 18 h / 20 - 25 °C 10.1: sulfur trioxide pyridine complex; N-ethyl-N,N-diisopropylamine / dichloromethane; dimethyl sulfoxide / 2 h / 6 - 12 °C / |Inert atmosphere 11.1: hydrogenchloride / acetonitrile; water / 4 h / 13 - 20 °C 12.1: carbon / ethyl acetate / 2 h / 20 °C 12.2: 1.5 h / 17 - 25 °C / 2250.23 Torr View Scheme