1: 30 percent / aluminum chloride; ferric chloride / 0.67 h / 25 - 225 °C / 3 - 5 Torr 2: 52 percent / chromium(VI) oxide / H2O; acetic acid / 2 h / 50 - 55 °C 3: 58 percent / NBS; AIBN; bromine / CCl4 / 90 h / Heating 4: acetic acid / 4 h / Heating 5: 0.260 g / water / CH2Cl2 6: ethanol / 2 h / 25 °C 7: aqueous hydrochloric acid / Heating View Scheme

1: 30 percent / aluminum chloride; ferric chloride / 0.67 h / 25 - 225 °C / 3 - 5 Torr 2: 52 percent / chromium(VI) oxide / H2O; acetic acid / 2 h / 50 - 55 °C 3: 58 percent / NBS; AIBN; bromine / CCl4 / 90 h / Heating 4: acetic acid / 4 h / Heating 5: 0.260 g / water / CH2Cl2 View Scheme