acetic acid T=60°C; 12 h;

1: fuming H2SO4 / 3 h / 90 °C 2: 1.) aq. KOH, 2.) aq. HCl / 1) pH 12.5, 50 deg C, 10 min; 2) pH 2.0, 50 deg C, 10 min; 3) pH 2, 3 d, room temperature 3: 92 percent / acetic acid / 12 h / 60 °C View Scheme

1: 1.) aq. KOH, 2.) aq. HCl / 1) pH 12.5, 50 deg C, 10 min; 2) pH 2.0, 50 deg C, 10 min; 3) pH 2, 3 d, room temperature 2: 92 percent / acetic acid / 12 h / 60 °C View Scheme