1: 71 percent / bromine / CCl4 / Heating; Irradiation 2: 94 percent / toluene / 4 h / Heating 3: 97 percent / 48 percent HBr / H2O / 3 h / Heating 4: pyridine / CHCl3 / 3 h / Heating 5: 70 percent / triethylamine / toluene / 3 h / Heating View Scheme

1: 83 percent / HBr / acetonitrile / 2 h / 100 °C 2: pyridine / CHCl3 / 3 h / Heating 3: 70 percent / triethylamine / toluene / 3 h / Heating View Scheme

1: 94 percent / toluene / 4 h / Heating 2: 97 percent / 48 percent HBr / H2O / 3 h / Heating 3: pyridine / CHCl3 / 3 h / Heating 4: 70 percent / triethylamine / toluene / 3 h / Heating View Scheme

1: pyridine / CHCl3 / 3 h / Heating 2: 70 percent / triethylamine / toluene / 3 h / Heating View Scheme

1: pyridine / CHCl3 / 3 h / Heating 2: 70 percent / triethylamine / toluene / 3 h / Heating View Scheme

1: 95 percent / 3 h / 130 °C 2: 71 percent / bromine / CCl4 / Heating; Irradiation 3: 94 percent / toluene / 4 h / Heating 4: 97 percent / 48 percent HBr / H2O / 3 h / Heating 5: pyridine / CHCl3 / 3 h / Heating 6: 70 percent / triethylamine / toluene / 3 h / Heating View Scheme

1: 97 percent / 48 percent HBr / H2O / 3 h / Heating 2: pyridine / CHCl3 / 3 h / Heating 3: 70 percent / triethylamine / toluene / 3 h / Heating View Scheme