Process for preparing M-chlorobenzene sulphonyl chloride

Details Process for preparing M-chlorobenzene sulphonyl chloride Process for preparing M-chlorobenzene sulphonyl chloride

1975-03-17

1977-03-15

Morgenstern, Norman

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

C07C14370

Patent

active

040124428

ABSTRACT:
Meta-chlorobenzene sulphonyl chloride and metadichlorobenzene are prepared by reacting benzene sulphonyl chloride with chlorine in the presence of a Friedel-Crafts catalyst at a temperature of from 0.degree. to 150.degree. C. After removing the catalyst, the resulting m-chlorobenzene sulphonyl chloride is reacted to form m-dichlorobenzene. The m-chlorobenzene sulphonyl chloride is preferably isolated prior to being reacted to m-dichlorobenzene. The reaction forming m-dichlorobenzene can be carried out via thermal clevage, thermal chlorolysis or chlorolysis initiated photochemically or by radicals.

REFERENCES:
olah, "Friedi-Crafts and Related Reactions," vol. III, p. 1549 vol. IV, pp. 112-114 (1965) Interscience Publishers, New York, N.Y.

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