mercury(II) oxide by pyrolysis over HgO at 120°C;

1: 2,3,4,5,6-pentafluoroformanilide With sodium hydride in tetrahydrofuran T=20°C; 2: hexafluorobenzene With N,N-dimethyl-formamide in tetrahydrofuran 3.5 h; Heating; 3: With hydrogenchloride in tetrahydrofuran Further stages. Further byproducts.;

bis(trichloromethyl) carbonate; triethylamine in tetrachloromethane 1 h; Ambient temperature;

sulfuryl dichloride in thionyl chloride 1.) r.t., 2 h, 2.) heated, 4.5 h;