1-Halo-2-alkylthioethyl and 1-halo-2-arylthioethyl sulfones, having algicidal and fungicidal activity, are prepared by the addition of arylsulfenyl or alkylsulfenyl halides to alkyl or aryl vinyl sulfones. The thioethyl sulfone products are treated with a base to produce 2-alkylthiovinyl or 2-arylthiovinyl sulfones, which also have algicidal and fungicidal activity. The vinyl sulfones are halogenated to produce 1,2-dihalothioethyl sulfones, which have superior fungicidal activity, especially for tomato and celery late blight.
1-卤代-2-烷基
硫醚基乙基和1-卤代-2-芳基
硫醚基乙基磺酰基,具有杀藻和杀真菌活性,是通过将芳基
硫基或烷基
硫基卤化物加入烷基或芳基
乙烯基磺酰基中制备的。
硫醚基磺酰基产物经过碱处理,产生2-烷基
硫基
乙烯基或2-芳基
硫基
乙烯基磺酰基,这些产物也具有杀藻和杀真菌活性。
乙烯基磺酰基卤化产生1,2-二卤代
硫醚基
乙烷磺酰基,这些产物具有优异的杀真菌活性,特别是对番茄和芹菜晚疫病的治疗效果更好。