1: 74 percent / sodium fluoride / tetrahydrothiophene 1,1-dioxide / 4 h / 200 °C 2: 65 percent / antimony trifluoride, antimony pentachloride / 1.5 h / 135 °C View Scheme

antimony(V) pentachloride; SbF3 T=175°C; 1 h;