FIELD: organic chemistry. SUBSTANCE: product: dimethyl-2-difluoromethyl-4-(2-methylpropyl)-6-trifluoromethyl-3,5- pyridinedicarbothioate, gross-formula is C15H16F5NO2S2, yield is 99%. Reagent 1: methanethiol. Reagent 2: aqueous solution of alkaline metal hydroxide. Reagent 3: corresponding pyridinedicarbonyl chloride. Reaction conditions: in organic solvent, in the presence of catalyst of phase transfer at 25-65 C. EFFECT: improved method of synthesis. 7 cl, 1 tbl
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