hydrogenchloride 18 h; Heating;

1: 80 percent / N-bromosuccinimide, benzoyl peroxide / CCl4 / 8 h / Heating 2: 60 percent / AgBF4 / 1,2-dichloro-ethane / 18 h / 25 °C 3: 78 percent / conc. HCl / 18 h / Heating View Scheme