hydrogen bromide in acetic acid T=25°C; 24 h;

1: 12 percent / 3 h / 180 °C 2: 46 percent / sodium methoxide / methanol / 3 h / Heating 3: 92 percent / 1 M hydrochloric acid / 4 h / Heating 4: 44 percent / 33percent hydrogen bromide / acetic acid / 24 h / 25 °C View Scheme