water; bromine

1: aqueous sulfuric acid; sodium nitrite / Erhitzen des Reaktionsgemisches mit Kupfer(II)-sulfat auf 180grad 2: water; bromine View Scheme

1: sulfuric acid / acetic acid / 1 h / 100 °C 2: sodium hypochlorite; sodium hydroxide / methanol / 24 h / 25 °C 3: hydrogen / methanol / 20 h / 80 °C / 22502.3 Torr 4: water; potassium hydroxide / methanol / 24 h / Reflux 5: bromine / water / 2 h / 0 - 5 °C View Scheme

1: sodium hypochlorite; sodium hydroxide / methanol / 24 h / 25 °C 2: hydrogen / methanol / 20 h / 80 °C / 22502.3 Torr 3: water; potassium hydroxide / methanol / 24 h / Reflux 4: bromine / water / 2 h / 0 - 5 °C View Scheme

1: hydrogen / methanol / 20 h / 80 °C / 22502.3 Torr 2: water; potassium hydroxide / methanol / 24 h / Reflux 3: bromine / water / 2 h / 0 - 5 °C View Scheme

1: water; potassium hydroxide / methanol / 24 h / Reflux 2: bromine / water / 2 h / 0 - 5 °C View Scheme

1: sodium hydroxide / water / 1 h / 0 - 5 °C 2: phosphorus pentachloride / dichloromethane / 1 h / 0 - 5 °C 3: AlCl3, aluminium chloride / dichloromethane / 4 h / 3 - 8 °C 4: Pearlman's catalist; sulfuric acid; hydrogen; trifluoroacetic acid / 24 h / 20 °C / 5171.62 Torr 5: water; potassium hydroxide / methanol / 24 h / Reflux 6: bromine / water / 2 h / 0 - 5 °C View Scheme

1: AlCl3, aluminium chloride / dichloromethane / 4 h / 3 - 8 °C 2: Pearlman's catalist; sulfuric acid; hydrogen; trifluoroacetic acid / 24 h / 20 °C / 5171.62 Torr 3: water; potassium hydroxide / methanol / 24 h / Reflux 4: bromine / water / 2 h / 0 - 5 °C View Scheme

1: phosphorus pentachloride / dichloromethane / 1 h / 0 - 5 °C 2: AlCl3, aluminium chloride / dichloromethane / 4 h / 3 - 8 °C 3: Pearlman's catalist; sulfuric acid; hydrogen; trifluoroacetic acid / 24 h / 20 °C / 5171.62 Torr 4: water; potassium hydroxide / methanol / 24 h / Reflux 5: bromine / water / 2 h / 0 - 5 °C View Scheme

1: Pearlman's catalist; sulfuric acid; hydrogen; trifluoroacetic acid / 24 h / 20 °C / 5171.62 Torr 2: water; potassium hydroxide / methanol / 24 h / Reflux 3: bromine / water / 2 h / 0 - 5 °C View Scheme