ammonium cerium (IV) nitrate in water; acetonitrile T=0°C; 0.5 h;

1: 92 percent / concd. H2SO4 / benzene / 1.5 h / Heating 2: 4 percent / acetonitrile / 0.5 h / Irradiation 3: 7.5 mg / H2 / 10percent Pd-C / methanol / 1 h / Ambient temperature View Scheme

1: 7 percent / benzene / 24 h / Irradiation 2: 7.5 mg / H2 / 10percent Pd-C / methanol / 1 h / Ambient temperature View Scheme

sodium hydroxide unter Stickstoff;

1.1: BH3 / tetrahydrofuran / 4 h / 20 °C 1.2: 71 percent / aq. NaOH; H2O2 / tetrahydrofuran / 4 h / 20 °C 2.1: 71 percent / aq. Fremy's salt; sodium acetate / methanol; dimethylformamide / 8 h / 20 °C 3.1: 95 percent / dichlorodicyanobenzoquinone (DDQ); p-toluenesulfonic acid monohydrate / benzene / 0.5 h / Heating 4.1: 86 percent / aq. NaOH / 2 h / Heating 5.1: 89 percent / aq. H2SO4 / CH2Cl2 / 5 h / Heating View Scheme

1: 71 percent / aq. Fremy's salt; sodium acetate / methanol; dimethylformamide / 8 h / 20 °C 2: 95 percent / dichlorodicyanobenzoquinone (DDQ); p-toluenesulfonic acid monohydrate / benzene / 0.5 h / Heating 3: 86 percent / aq. NaOH / 2 h / Heating 4: 89 percent / aq. H2SO4 / CH2Cl2 / 5 h / Heating View Scheme

1: 95 percent / dichlorodicyanobenzoquinone (DDQ); p-toluenesulfonic acid monohydrate / benzene / 0.5 h / Heating 2: 86 percent / aq. NaOH / 2 h / Heating 3: 89 percent / aq. H2SO4 / CH2Cl2 / 5 h / Heating View Scheme

1: tetrabutyl ammonium fluoride; acetic acid / tetrahydrofuran / 0.67 h / 40 °C / |Cooling with ice 2: ammonium cerium (IV) nitrate / acetonitrile; water / 0.5 h / 0 °C View Scheme

1.1: n-butyllithium / hexane; tetrahydrofuran / 2 h / 0 - 20 °C / |Inert atmosphere 1.2: 15 h / -80 °C / |Inert atmosphere 2.1: tetrabutyl ammonium fluoride; acetic acid / tetrahydrofuran / 0.67 h / 40 °C / |Cooling with ice 3.1: ammonium cerium (IV) nitrate / acetonitrile; water / 0.5 h / 0 °C View Scheme