Verfahren zur Herstellung von 2, 4, 5, 4'-Tetrachlordiphenylsulfid

摘要

2,4,5,41 - Tetrachlorodiphenyl sulphide is prepared by treating 2,4,5,21,41,51-hexachlorodiphenyl disulphide with chlorine in monochlorobenzene in the presence of a Friedel-Crafts catalyst. An example is given.