in water 0.75 h; RefluxInert atmosphere;

1: sulfuric acid / 2.5 h / 90 °C / |Inert atmosphere 2: sodium hydroxide; dihydrogen peroxide / water / 0 - 20 °C / |Inert atmosphere 3: hydrogenchloride / water / 12 h / |Reflux; |Inert atmosphere 4: palladium 10 on activated carbon; hydrogen / methanol / 8 h / |Inert atmosphere 5: water / 0.75 h / |Reflux; |Inert atmosphere View Scheme

1: hydroxylamine hydrochloride; sodium sulfate; hydrogenchloride / water / 65 °C / |Inert atmosphere 2: sulfuric acid / 2.5 h / 90 °C / |Inert atmosphere 3: sodium hydroxide; dihydrogen peroxide / water / 0 - 20 °C / |Inert atmosphere 4: hydrogenchloride / water / 12 h / |Reflux; |Inert atmosphere 5: palladium 10 on activated carbon; hydrogen / methanol / 8 h / |Inert atmosphere 6: water / 0.75 h / |Reflux; |Inert atmosphere View Scheme

1: sodium hydroxide; dihydrogen peroxide / water / 0 - 20 °C / |Inert atmosphere 2: hydrogenchloride / water / 12 h / |Reflux; |Inert atmosphere 3: palladium 10 on activated carbon; hydrogen / methanol / 8 h / |Inert atmosphere 4: water / 0.75 h / |Reflux; |Inert atmosphere View Scheme

1: hydrogenchloride / water / 12 h / |Reflux; |Inert atmosphere 2: palladium 10 on activated carbon; hydrogen / methanol / 8 h / |Inert atmosphere 3: water / 0.75 h / |Reflux; |Inert atmosphere View Scheme

1: palladium 10 on activated carbon; hydrogen / methanol / 8 h / |Inert atmosphere 2: water / 0.75 h / |Reflux; |Inert atmosphere View Scheme