- HERBICIDAL COMPOSITIONS
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The present invention provides compositions comprising herbicidally active compounds (A) and (B), where (A) represents one or more compounds of the general formula (I) or agrochemically compatible salts thereof [component (A)], and (B) represents one or more herbicides [component (B)]. The application further relates to a method and to the use of the herbicidal composition according to the invention for controlling harmful plants or for regulating growth.
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- Flufenacet preparation method
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The invention discloses a flufenacet preparation method, which comprises synthesis of 2-methylsulfonyl-5-trifluoromethyl-1,3,4-thiadiazole, synthesis of 2-hydroxy-N-(4-fluoroaniline)-N-(1-methylethyl)acetamide and synthesis of 4'-fluoro-N-isopropyl-2-[5-(trifluridine)-1,3,4-thiadiazole-2-imide]acetamide. The optimal flufenacet preparation method is screened by a large number of experiments, the whole process is reasonable in design, particularly the steps of screening optimal reaction conditions and the optimal amount ratio, reaction temperature, reaction time and the like of reaction raw materials, the reaction yield (capable of reaching 90 percent or more) can be greatly increased, side reaction can be reduced, the reaction rate can be increased, the reaction raw materials can be recycled, the production cost is greatly reduced, and a broad application prospect is achieved.
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- SYNTHESIS METHOD OF THIADIAZOLYLAMIDE DERIVATIVE
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A synthesis method of 2-[(5-(trifluoromethyl)-1,3,4-thiadiazolyl-2-yl)-oxy]amide derivative (I). The method comprises the following step: in a solvent insoluble with water, 2-sulphinyl-5-trifluoromethyl-thiadiazole (II) and amide (III) reacting under the
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Paragraph 0023
(2015/12/08)
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