1: 86 percent / 56percent HI / 4 h / Heating 2: 85 percent / pyridine / 1.5 h / 50 °C 3: 60 percent / 5 N aq. acetic acid / 72 h / 70 °C 4: 90 percent / 5 N aq. KOH / ethanol / 0.5 h / Heating View Scheme

hydrogen iodide 4 h; Heating;

1: 86 percent / 56percent HI / 4 h / Heating 2: 85 percent / pyridine / 1.5 h / 50 °C View Scheme

1: 86 percent / 56percent HI / 4 h / Heating 2: 85 percent / pyridine / 1.5 h / 50 °C 3: 60 percent / 5 N aq. acetic acid / 72 h / 70 °C View Scheme