hydrogen bromide 1 h; Heating;

1: 48 percent / K2CO3 / acetone / 60 °C 2: 1.) N-bromosuccinimide, benzoyl peroxide, 2.) Na / 1.) CCl4, reflux, 3 h, 2.) ethanol, reflux, 4 h 3: 69 percent / 33percent HBr in glacial acetic acid / 1 h / Heating View Scheme

1: 1.) N-bromosuccinimide, benzoyl peroxide, 2.) Na / 1.) CCl4, reflux, 3 h, 2.) ethanol, reflux, 4 h 2: 69 percent / 33percent HBr in glacial acetic acid / 1 h / Heating View Scheme