hydrogen; palladium on activated charcoal in ethanol T=60°C; P=45600 Torr; 48 h;

[2,2']bipyridinyl; NiII chloride hexahydrate; zinc in water T=70°C; 15 h;

boron tribromide in dichloromethane 24 h; Ambient temperature;

dihydrogen peroxide in acetone

1: 70 percent / H2O2 / H2O; acetone / 1 h / Heating 2: 72 percent / H2 / Pd-C / ethanol / 48 h / 60 °C / 45600 Torr View Scheme

1.1: Mg; I2 / tetrahydrofuran / 1 h / Heating 1.2: 60 percent / tetrahydrofuran / 15 h / 20 °C 2.1: 70 percent / H2O2 / H2O; acetone / 1 h / Heating 3.1: 72 percent / H2 / Pd-C / ethanol / 48 h / 60 °C / 45600 Torr View Scheme

1.1: 89 percent / K2CO3; 18-crown-6 / acetone / 7 h / Heating 2.1: Mg; I2 / tetrahydrofuran / 1 h / Heating 2.2: 60 percent / tetrahydrofuran / 15 h / 20 °C 3.1: 70 percent / H2O2 / H2O; acetone / 1 h / Heating 4.1: 72 percent / H2 / Pd-C / ethanol / 48 h / 60 °C / 45600 Torr View Scheme

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