BENZAMIDE DERIVATIVE AND SOIL DISEASE-CONTROLLING AGENT

摘要

NEW MATERIAL:A compound expressed by formula I (X is halogen; n is 1 or 2). EXAMPLE:N-(2,4,6-Triisopropylbenzenesulphonyl)-2,6-dichlorobenzamide. USE:A soil disease controlling agent exhibiting excellent activity against Plasmodiophora occurring in Brassicaceae plant and completely providing no phytotoxicity to useful crops. PREPARATION:A halogen substituted benzoic acid halide expressed by formula II (X is halogen) is reacted with 2,4,6-triisopropyl-benzenesulfoneamide in the presence of a dehydrochlorination agent (e.g. sodium hydroxide) in a solvent such as dioxane at room temperature - boiling point of the solvent to provide the aimed compound expressed by formula I.