ammonium hydroxide T=0°C; 1 h;

1: 74 percent / ZnCl2 / 1,2-dichloro-ethane / 30 - 33 °C 2: 82 percent / AcOH Ac2O / 15 h / Heating 3: NaOH / H2O / 6 h / Heating 4: 10.5 g / SOCl2 / benzene / 4 h / Heating 5: 8.4 g / aq. ammonia / 1 h / 0 °C View Scheme

1: 10.5 g / SOCl2 / benzene / 4 h / Heating 2: 8.4 g / aq. ammonia / 1 h / 0 °C View Scheme

1: 82 percent / AcOH Ac2O / 15 h / Heating 2: NaOH / H2O / 6 h / Heating 3: 10.5 g / SOCl2 / benzene / 4 h / Heating 4: 8.4 g / aq. ammonia / 1 h / 0 °C View Scheme

1: NaOH / H2O / 6 h / Heating 2: 10.5 g / SOCl2 / benzene / 4 h / Heating 3: 8.4 g / aq. ammonia / 1 h / 0 °C View Scheme