tetramethylene sulfide; potassium fluoride; tetra-phenylphosphonium bromide in anhydrous ethylene glycol dimethyl ether T=150°C; Inert atmosphere of argon; Product distribution / selectivity;

AlCl3, aluminium chloride; tetrachlorosilane T=20 - 50°C; 4.5 h;

in chlorobenzene T=130°C; 5 h;