Zeneca Limited

Ici Americas, Inc.

Nancy Kerlinger

Richard D Gless

Peter Karl Wehrenberg

Compounds of the formula: ##STR1## wherein R is CH.sub.2 X or CHX.sub.2 and X is chloro or bromo and R.sup.1 is chloro, bromo or nitro which are useful as intermediates for preparing herbicidal 2-(2'-substituted)-4'-(alkylsulfonyl)benzoyl-1,3-cyclohexanedione compounds.

Herbicide intermediates

A process for the preparation of 2-(substituted)-4-sulfobenzoic acid by oxidation of 2-(substituted)-4-toluenesulfonic acid.

Process for the preparation of 2-(substituted)-4-sulfobenzoic acid

Acylated substituted thiazolidines are formed in high yields by reaction of a substituted thiazolidine with an acyl halide in the presence of a buffer compound. The products are further purified by washing with a strong base. The products are useful as herbicides.

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Lafayette, CA, United States of America

Nancy Kerlinger