1: 31 percent / KI / toluene / 100 - 110 °C 2: 60 percent / HF, potassium carbonate, potassium oxalate, kryptofix 222 / dimethylsulfoxide / 0.33 h / 160 °C View Scheme

1: 21 percent / KI / toluene; dimethylsulfoxide / 100 - 110 °C 2: 45 percent / HF, potassium carbonate, potassium oxalate, kryptofix 222 / dimethylsulfoxide / Heating View Scheme