The present invention relates to a novel method for the preparation of a key intermediate pyridine compound for producing fluoroalkylpyridine-sulfonyl urea derivatives showing superior herbicidal activity, novel alkylthioolefin derivatives used in the preparation, and a method for the preparation thereof. According to the present method using the novel alkylthioolefin derivatives of Formula 2, the intermediate compound of Formula 1 for producing flucetosulfuron can be prepared, through a simple processing step, with a yield equivalent or superior to those of conventional methods.
本发明涉及一种新的制备关键中间体
吡啶化合物的方法,用于生产表现出优异除草活性的氟烷基
吡啶磺酰
脲衍
生物,以及用于制备的新型烷基
硫醇烯衍
生物和其制备方法。根据本方法使用的式2的新型烷基
硫醇烯衍
生物,可以通过简单的处理步骤制备出式1的中间化合物,用于生产氟烷基
吡啶磺酰
脲衍
生物,其产率相当或优于传统方法。