1.1: sodium hydride / N,N-dimethyl-formamide; mineral oil / 0.5 h / 0 °C / |Inert atmosphere 1.2: 4 h / 0 - 20 °C / |Inert atmosphere 2.1: hydrogen; palladium 10 on activated carbon / methanol / 16 h / 50 °C / 3750.38 Torr 3.1: sodium hydride / N,N-dimethyl-formamide; mineral oil / 16 h / 20 °C 3.2: 2 h / 20 °C 4.1: hydrogen; 5 palladium on charcoal / methanol / 16 h / 7500.75 Torr 5.1: sodium nitrite; acetic acid / 1 h / 20 °C 6.1: hydrogenchloride / methanol; water / 20 °C View Scheme

1.1: sodium hydride / N,N-dimethyl-formamide / 0.5 h / 0 °C / |Inert atmosphere 1.2: 4 h / 0 - 20 °C / |Inert atmosphere 2.1: palladium 10 on activated carbon; hydrogen / methanol / 168 h / 40 °C / 7500.75 Torr View Scheme

palladium 10 on activated carbon; hydrogen in methanol T=30°C; P=2250.23 Torr; 5 h;