122008-78-0Relevant articles and documents
Preparation method of herbicide cyhalofop-butyl
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Paragraph 0019-0053; 0055-0058, (2020/07/24)
The invention discloses a preparation method of herbicide cyhalofop-butyl, and particularly relates to the field of biological pharmacy, and the preparation method specifically comprises the followingsteps: 1, selecting a clean double-neck flask, adding an organic solvent into the double-neck flask, and dissolving (R)-2-[4-(2-fluoro-4-cyanophenoxy) phenoxy] propionic acid into the organic solvent; 2, continuously adding solid inorganic base into the double-neck flask, heating to 50 DEG C, keeping the temperature, and conducting the reaction for 0.5-1 hour in the double-neck flask. By dissolving (R)-2-[4-(2-fluoro-4-cyanophenoxy) phenoxy] propionic acid into an organic solvent, adding solid inorganic base, heating the reaction materials to reflux and carrying out the reaction with water, aHPLC tracking reaction is completed, so that the cyhalofop-butyl is shorter in reaction step, simple and convenient to operate, few in reaction by-products, easy to control, harmless and low in safety risk, the product yield and the optical purity are improved, part of raw materials in the reaction process can be recycled, the cost is low, and industrial production is facilitated.
A method for synthesizing cyhalofop
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Paragraph 0012-0017, (2019/07/11)
The invention discloses a method for synthesizing cyhalofop-. In order to (R)- 2 - [4 - (4 - cyano - 2 - monofluoro-benzene oxygen radical) phenoxy] propionic acid methyl ester and butyl alcohol as the raw material, the function of the catalyst for produc
Herbicide composition containing metamifop and quinclorac
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, (2019/03/08)
The invention discloses an herbicide composition containing metamifop and quinclorac. The herbicide composition comprises primary active ingredients and secondary active ingredients, wherein the primary active ingredients comprise the following components in parts by mass: 5-10 parts of metamifop and 10-20 parts of quinclorac; the secondary active ingredients are selected from the following components in parts by mass: 10-20 parts of cyhalofop-butyl, 3-8 parts of bispyribac-sodium, 1-6 parts of halosulfuron-methyl, 3-7 parts of pyrazosulfuron-ethyl and 6-10 parts of pyribenzoxim; and the secondary active ingredients refer to one of cyhalofop-butyl, bispyribac-sodium, halosulfuron-methyl, pyrazosulfuron-ethyl and pyribenzoxim. The invention relates to the technical field of herbicides. According to the herbicide composition containing metamifop and quinclorac disclosed by the invention, the problems such as herbicide resistant weed plants appearing, soil contamination, degradation of water, harm of non-weeds and the like are solved.