1: 80 percent / dibromotetrachloroethane / toluene 2: 90 percent / methanol / 19 h / 60 °C 3: 60 percent / selenium dioxide / chlorobenzene / 1 h / 135 °C View Scheme

With  1,1-dibromo-tetrachloro-ethane in  toluene  

Multi-step reaction with 2 steps 1: 80 percent / dibromotetrachloroethane / toluene2: 90 percent / methanol / 19 h / 60 °C