4-Bromo-3-methylisoxazol-5-amine → 3-Chloro-2,5-dimethyl-N-(4-bromo-3-methyl-5-isoxazolyl)benzenesulfonamide

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3-Chloro-2,5-dimethyl-N-(4-bromo-3-methyl-5-isoxazolyl)benzenesulfonamide was prepared from 5-amino-4-bromo-3-methylisoxazole and 3-chloro-2,5-dimethylbenzenesulfonyl chloride according to the procedures described in Example 5. The crude product was purified by recrystallization from ethyl acetate/hexanes to give a crystalline solid, m.p. 148°-150° C., yield 71%.

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