Decolorizing arylsulfonyl halides

Details Decolorizing arylsulfonyl halides Decolorizing arylsulfonyl halides

1986-03-24

1987-09-29

Killos, Paul J.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

260708, C07C14300

Patent

active

046967745

ABSTRACT:
There is disclosed a process for decolorizing arylsulfonyl halides. The disclosed process decolorizes arylsulfonyl halides derived from the reaction of an arylsulfonic acid with a sulfur halide and a corresponding halogen. The resulting arylsulfonyl halide is contacted with a decolorizing agent and thereafter optionally dstilled. The decolorizing agent can be an oxidizing agent, for example, hydrogen peroxide, sodium hypochlorite, potassium permanganate, chlorine, nitric acid, and air in the presence of platinum on charcoal catalyst. The decolorizing agent can also be a reducing agent, e.g., dimethyl phosphite, trimethyl phosphite, triphenyl phosphite, hydrogen sulfide, sodium hypophosphite and red phosphorus. Additionally, the decolorizing agent can be a compound having at least one alkene linkage, e.g., polybutadiene, C.sub.14 -C.sub.30 alpha-olefins, and unsaturated vegetable oils.

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