- Production method of methyl o-formate benzyl sulfonamide
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The invention belongs to the technical field of pesticide intermediates, and particularly relates to a production method of methyl o-formate benzyl sulfonamide. The production method comprises steps:reacting o-methylbenzoic acid with sulfuryl chloride to obtain o-chloromethylbenzoic acid; reacting o-chloromethylbenzoic acid with methanol to obtain o-chloromethyl methyl benzoate; reacting o-chloromethyl methyl benzoate with sodium thiosulfate to obtain methyl o-formate benzyl mercaptan, reacting methyl o-formate benzyl mercaptan with chlorine to obtain methyl o-formate benzyl sulfonyl chloride, and reacting methyl o-formate benzyl sulfonyl chloride with ammonia gas to obtain methyl o-formate benzyl sulfonamide. According to the method, polychlorinated side reactions in the production process are reduced, the yield is increased, the tar yield is reduced, and the problems of low yield and high cost in the production process are solved.
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Page/Page column 6-9
(2020/09/12)
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