1: sulfuric acid / 3 h / Reflux 2: N-bromosuccinmide; dibenzoyl peroxide / tetrachloromethane; benzene / 24 h / Reflux 3: silver nitrate / ethanol; water / Reflux 4: sodium tetrahydroborate / methanol / 4 h 5: hydrogenchloride; SnCl2·2H2O; acetic acid / water / 3 h / 100 °C 6: sodium hydroxide / Reflux View Scheme

1: N-bromosuccinmide; dibenzoyl peroxide / tetrachloromethane; benzene / 24 h / Reflux 2: silver nitrate / ethanol; water / Reflux 3: sodium tetrahydroborate / methanol / 4 h 4: hydrogenchloride; SnCl2·2H2O; acetic acid / water / 3 h / 100 °C 5: sodium hydroxide / Reflux View Scheme

1: sodium tetrahydroborate / methanol / 4 h 2: hydrogenchloride; SnCl2·2H2O; acetic acid / water / 3 h / 100 °C 3: sodium hydroxide / Reflux View Scheme

1: sodium tetrahydroborate / methanol / 4 h 2: hydrogenchloride; SnCl2·2H2O; acetic acid / water / 3 h / 100 °C 3: sodium hydroxide / Reflux View Scheme

1: With sodium hydroxide Reflux; 2: With hydrogenchloride in water

1: hydrogenchloride; SnCl2·2H2O; acetic acid / water / 3 h / 100 °C 2: sodium hydroxide / Reflux View Scheme

1: sodium tetrahydroborate / methanol / 4 h 2: hydrogenchloride; SnCl2·2H2O; acetic acid / water / 3 h / 100 °C 3: sodium hydroxide / Reflux View Scheme