1.1: ethanol / 2 h / 20 °C 1.2: 1 h / 0 - 10 °C 2.1: pyridine; sulfuryl dichloride / dichloromethane / -30 - -20 °C 3.1: perchloric acid / 18 h 4.1: dimethylsulfide borane complex; trimethylsilyl trifluoromethanesulfonate / dichloromethane / 1 h / -30 - -20 °C 4.2: 12 h / 20 °C 4.3: 2 h / 55 - 65 °C 5.1: sodium azide; ammonium chloride / water; ethanol / 8 h / 70 - 75 °C 5.2: 6 h / |Reflux 6.1: sodium azide; ammonium chloride / N,N-dimethyl-formamide / 5 h / 8 - 85 °C 7.1: sodium hydrogencarbonate / water; dichloromethane / 1 h / 20 °C 8.1: hydrogen / ethanol / 18 h / 760.05 Torr View Scheme

1.1: ethanol / 2 h / 20 °C 1.2: 1 h / 0 - 10 °C 2.1: pyridine; sulfuryl dichloride / dichloromethane / -30 - -20 °C 3.1: perchloric acid / 18 h 4.1: dimethylsulfide borane complex; trimethylsilyl trifluoromethanesulfonate / dichloromethane / 1 h / -30 - -20 °C 4.2: 12 h / 20 °C 4.3: 2 h / 55 - 65 °C View Scheme

1.1: ethanol / 2 h / 20 °C 1.2: 1 h / 0 - 10 °C 2.1: pyridine; sulfuryl dichloride / dichloromethane / -30 - -20 °C 3.1: perchloric acid / 18 h 4.1: dimethylsulfide borane complex; trimethylsilyl trifluoromethanesulfonate / dichloromethane / 1 h / -30 - -20 °C 4.2: 12 h / 20 °C 4.3: 2 h / 55 - 65 °C 5.1: sodium azide; ammonium chloride / water; ethanol / 8 h / 70 - 75 °C 5.2: 6 h / |Reflux View Scheme

1.1: ethanol / 2 h / 20 °C 1.2: 1 h / 0 - 10 °C 2.1: pyridine; sulfuryl dichloride / dichloromethane / -30 - -20 °C 3.1: perchloric acid / 18 h 4.1: dimethylsulfide borane complex; trimethylsilyl trifluoromethanesulfonate / dichloromethane / 1 h / -30 - -20 °C 4.2: 12 h / 20 °C 4.3: 2 h / 55 - 65 °C 5.1: sodium azide; ammonium chloride / water; ethanol / 8 h / 70 - 75 °C 5.2: 6 h / |Reflux 6.1: sodium azide; ammonium chloride / N,N-dimethyl-formamide / 5 h / 8 - 85 °C 7.1: sodium hydrogencarbonate / water; dichloromethane / 1 h / 20 °C 8.1: hydrogen / ethanol / 18 h / 760.05 Torr 9.1: phosphoric acid / acetone; ethanol / |Reflux View Scheme

1.1: ethanol / 2 h / 20 °C 1.2: 1 h / 0 - 10 °C 2.1: pyridine; sulfuryl dichloride / dichloromethane / -30 - -20 °C 3.1: perchloric acid / 18 h 4.1: dimethylsulfide borane complex; trimethylsilyl trifluoromethanesulfonate / dichloromethane / 1 h / -30 - -20 °C 4.2: 12 h / 20 °C 4.3: 2 h / 55 - 65 °C 5.1: sodium azide; ammonium chloride / water; ethanol / 8 h / 70 - 75 °C 5.2: 6 h / |Reflux 6.1: sodium azide; ammonium chloride / N,N-dimethyl-formamide / 5 h / 8 - 85 °C 7.1: sodium hydrogencarbonate / water; dichloromethane / 1 h / 20 °C View Scheme

1: pyridine / dichloromethane / 4 h / 20 °C 2: trifluoroacetic acid / 1.33 h / 20 °C 3: pyridine / benzene / 20 °C / Reflux; Inert atmosphere 4: hydrogenchloride; water / tetrahydrofuran / 336 h / 20 °C 5: acetic acid; zinc / 26 h / 20 °C View Scheme

1: pyridine / dichloromethane / 4 h / 20 °C 2: trifluoroacetic acid / 1.33 h / 20 °C 3: pyridine / benzene / 20 °C / Reflux; Inert atmosphere 4: hydrogenchloride; water / tetrahydrofuran / 336 h / 20 °C View Scheme

1: pyridine / dichloromethane / 4 h / 20 °C 2: trifluoroacetic acid / 1.33 h / 20 °C 3: pyridine / benzene / 20 °C / Reflux; Inert atmosphere 4: hydrogenchloride; water / tetrahydrofuran / 336 h / 20 °C 5: acetic acid; zinc / 26 h / 20 °C View Scheme

1: pyridine / dichloromethane / 4 h / 20 °C 2: trifluoroacetic acid / 1.33 h / 20 °C 3: pyridine / benzene / 20 °C / Reflux; Inert atmosphere 4: hydrogenchloride; water / tetrahydrofuran / 336 h / 20 °C View Scheme