phosphorus pentoxide in neat (no solvent) T=38°C; P=10 Torr;

1: 70 percent / Br2 / acetic acid 2: 62 percent / 1M NaOH / 110 °C 3: 57 percent / I2, KI 4: 90 percent / P2O5 / neat (no solvent) / 38 °C / 10 Torr View Scheme

1: 62 percent / 1M NaOH / 110 °C 2: 57 percent / I2, KI 3: 90 percent / P2O5 / neat (no solvent) / 38 °C / 10 Torr View Scheme

1: 57 percent / I2, KI 2: 90 percent / P2O5 / neat (no solvent) / 38 °C / 10 Torr View Scheme

1: 84.6 percent / Br2 / acetic acid 2: 84 percent / KOH 3: 70 percent / Br2 / acetic acid 4: 62 percent / 1M NaOH / 110 °C 5: 57 percent / I2, KI 6: 90 percent / P2O5 / neat (no solvent) / 38 °C / 10 Torr View Scheme

1: 1) Mg, 2) Cu(I) 2: 84.6 percent / Br2 / acetic acid 3: 84 percent / KOH 4: 70 percent / Br2 / acetic acid 5: 62 percent / 1M NaOH / 110 °C 6: 57 percent / I2, KI 7: 90 percent / P2O5 / neat (no solvent) / 38 °C / 10 Torr View Scheme