N-bromosuccinmide; pentachlorobenzoyl chloride in tetrachloromethane 30 h; Heating;

1: 1.) urotropine, 2.) HCl / 1.) chloroform, reflux, 3 h, 2.) methanol, reflux, 2 h 2: 71 percent / pyridine / 24 h View Scheme

1: 1.) urotropine, 2.) HCl / 1.) chloroform, reflux, 3 h, 2.) methanol, reflux, 2 h 2: 71 percent / pyridine / 24 h 3: 82 percent / H2 / PtO2 / methanol / 30 °C / 7600 Torr View Scheme