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以２氯代苯并噻唑和２羟基 Ｎ甲基乙酰苯胺为原料合成苯噻草胺， 对反应条件进行了探讨， 收率９４ ％ ， 产品纯度≥９５ ％ 。
Benzothiazole and 2 hydroxy N methyl acetanilide as raw materials for the synthesis of mefenacet, the reaction conditions were discussed, the yield was 94%, product purity ≥ 95%.