335104-84-2Relevant articles and documents
Method for preparing triketone compound through continuous flow
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Paragraph 0029-0031, (2021/09/08)
The invention relates to a method for preparing a triketone compound through continuous flow, which uses substrate acyl chloride and 1, 3 - cyclohexanedione as a raw material and is subjected to esterification. The method is mild in condition, simple to operate, good in stability and high in reliability. Utilize continuous flow can accurate control dwell time, the good characteristics of mass transfer heat transfer, easily realize accurate control, restrain the production of side reaction, and reaction yield is high. The method has remarkable innovation meaning and economic value, is easy for industrialization and has a wide prospect.
Purification method of tembotrions product
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Paragraph 0052-0055, (2020/08/02)
The invention relates to a purification method of a tembotrions product. The method comprises the following steps: 1) dissolving the tembotrions product in an aqueous solution, and heating; 2) addingan adsorbent, and carrying out heat preservation and hot filtration; and 3) controlling the temperature, adjusting the pH value of the aqueous solution to be less than 3, cooling, and crystallizing purified tembotrions from the solution. According to the purification method of the sulfadione product, the content of cyanide impurities in the sulfadione product can be greatly reduced, the purity ofthe product is improved, and the content of the cyanide impurities is reduced from 1327 ppm to 100 ppm or below by performing Ames detection on the tembotrions product before purification and the purified product.
Synthetic process of herbicide tembotrione
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Paragraph 0036; 0044; 0045; 0046; 0047; 0055; 0056; 0057, (2019/05/08)
The invention discloses a synthetic process of herbicide tembotrione. The synthetic process comprises the following steps: step 1) adding methyl 2-chloro-3-methyl-4-methylsulfonylbenzoate, a solvent,a catalyst and hydrobromic acid at the first, then dropwise adding hydrogen peroxide, washing with water, concentrating and recrystallizing after reaction to obtain bromine methyl 2-chloro-3-bromomethyl-4-methylsulfonylbenzoate; step 2) enabling the bromide, an alkali 1, the catalyst, the solvent and 2,2,2-trifluoroethanol to react, filtering, washing with water and concentrating after reaction; adding an alkali 2 and water to react, acidifying, filtering, washing and drying to obtain an etherate 2-chloro-3-(2,2,2-trifluoroethoxy)methyl-4-methanesulfonylbenzoic acid; and step 3) removing the solvent after reacting the etherate, the catalyst, thionyl chloride and the solvent; adding 1,3-cyclohexanedione and the solvent, dropwise adding triethylamine; adding acetone cyanohydrin after reaction, washing with water, layering, removing the solvent from an oil layer, adding the solvent for recrystallization, filtering and drying to obtain a beige solid, namely tembotrione. The synthetic process provided by the invention increases the yield of an intermediate, is more environmentally-friendly and safer, and reduces production costs.
NOXIOUS ARTHROPOD CONTROL AGENT CONTAINING AMIDE COMPOUND
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, (2017/08/26)
An object of the present invention is to provide a compound having the controlling activity on a noxious arthropod, and a noxious arthropod controlling agent containing an amide compound of formula (I): wherein X represents a nitrogen atom or a CH group, p represents 0 or 1, A represents a tetrahydrofuranyl group or the like, R1, R2, R3, R4, R5, R6 and R7 represent a hydrogen atom or the like, n represents 1 or 2, Y represents an oxygen atom or the like, m represents any integer of 0 to 7, and Q represents a C1-8 chain hydrocarbon group optionally having a phenyl group or the like, has the excellent noxious arthropod controlling effect.
Process for synthesis of Triketone-based herbicide link sulphur grass alkone
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, (2016/11/24)
The invention relates to a process for synthesizing triketone herbicide cyclic sulcotrione. The method comprises the following steps: (1) synthesizing 2-chloro-6-methylsulfonyl methylbenzene; (2) synthesizing 2-chloro-3-acetyl-6-methylsulfonyl methylbenzene; (3) synthesizing 2-chloro-3-methyl-4-methylsulfonyl benzoic acid; (4) synthesizing methyl 2-chloro-3-methyl-4-methylsulfonyl benzoate; (5) synthesizing methyl 2-chloro-3-bromomethyl-4-methylsulfonyl benzoate; (6) synthesizing 2-chloro-3-(2,2,2-trifluoroethyoxy)methyl-4-methylsulfonyl benzoic acid; (7) synthesizing 2-chloro-3-(2,2,2-trifluoroethyoxy)methyl-4-methylsulfonyl benzoic acid 3-oxo-1-cyclohexene ester; and (8) synthesizing cyclic sulcotrione. The process disclosed by the invention has the beneficial effects that the reaction steps are reduced, the reaction time is shortened, and the yield of intermediates is improved; the reaction conditions are mild and safe; and the cost is reduced.
HERBICIDAL COMPOSITION
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Page/Page column 12, (2010/08/08)
To provide a herbicidal composition and a method for its application, whereby the effect of a herbicidally active ingredient is improved to reduce the environmental load on a site where the herbicide is applied or the periphery thereof, more than ever, and its dose can be reduced. A herbicidal composition comprising (1) a compound represented by the formula (I) or its salt: where T and Z are as defined in the specification, and (2) a polyoxyalkylene alkyl ether phosphate or its salt. A method for controlling undesired plants or inhibiting their growth, by applying the herbicidal composition.
Herbicidal mixture comprising a benzoyl derivative, a fertilizer containing nitrogen and an adjuvant.
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, (2008/06/13)
Herbicidal mixture comprising a benzoyl derivative, a fertilizer containing nitrogen and an adjuvant. A method of controlling the growth of weeds at a locus which comprises applying to said locus a herbicidally effective amount of: (a) a benzoyl derivative of formula (I): 1wherein R1, R2, R3, R4, R5 and w are as defined in the description; (b) a fertilizer containing nitrogen; and (c) one or more adjuvants; and to their compositions thereof.