76496-71-4Relevant articles and documents
Novel bifenthrin derivatives, and preparation method and application thereof
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Paragraph 0092-0103, (2019/08/30)
The invention discloses novel bifenthrin derivatives, and a preparation method and application thereof. The novel bifenthrin derivatives have a structural formula as shown in a formula (I) which is described in the specification. In the formula (I), when R1 is H, R2 is a Cl or CF3 substituent group, and R3 is H or a substituted or unsubstituted non-heterocyclic or heterocyclic aryl group; when R1is a Cl substituted group, R 2 is H or a Cl or CF3 substituent group, and R3 is H or a substituted or unsubstituted non-heterocyclic or heterocyclic aryl group; the non-heterocyclic aryl group is a phenyl, naphthyl, anthryl, phenanthryl or pyrenyl group; and the heterocyclic aryl group is a five-to-nine-membered monocyclic or polycyclic heterocyclic aryl group with one or more O or S heteroatoms.According to the invention, a series of the novel bifenthrin derivatives are synthesized mainly by modifying and transforming ortho-position and terminal-position benzene rings on the intermediate benzene rings of bifenthrin; and the novel bifenthrin derivatives have excellent insecticidal and mosquito-killing effect on both larvae and adult mosquitoes, are significantly reduced in toxicity and improved in metabolic stability, and shows good application prospects.
Preparation method of cyanogen chrysanthemum ester insecticide
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Paragraph 0029; 0033, (2017/08/25)
The invention discloses a preparation method of a Clocythrin pesticide. The method comprises the following steps: a) mixing chrysanthemic acid and chrysanthemyl chloride and placing the mixture into a reaction vessel, adding triethylamine and introducing phosgene, slowly heating to 55-110 DEG C and fully reacting for 1-4 h so as to generate Chrysanthemoyl chloride; and b) dissolving sodium cyanide in an aqueous-phase Triton micellar solution, adding a catalyst and heating to 40 DEG C, slowly and dropwise adding mixed liquor of Chrysanthemoyl chloride and m-Phenoxybenzaldehyde, keeping the temperature and reacting for 1-4 h, cooling to 10 DEG C, adding a few amount of water and crystal seed, fully stirring and precipitating solids, and washing the precipitated solids with alkali, washing, filtering and drying so as to obtain a final product Clocythrin. The solvent in the invention can be recycled, use of the catalyst and water is reduced, and discharge of toxic wastewater and exhaust gas is minimized. The post-processing procedure is simple, and extraction and solvent distillation are not required. The final product can be obtained through simple centrifugation, washing and filtration. Discharge of solid wastes is decreased.
Bifenthrin semi-antigen, and quick-detection apparatus and preparation method thereof
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Paragraph 0055; 0057, (2016/10/10)
The invention provides a bifenthrin semi-antigen, and a quick-detection apparatus and a preparation method thereof. The bifenthrin semi-antigen is represented as the formula (I). The bifenthrin semi-antigen is used for detecting bifenthrin metabolite, has