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Mesoionic insecticide

An alkyl and compound technology, applied in the directions of insecticides, nematicides, biocides, etc., can solve the problems of pest-resistant insecticides' service life, environmental pollution, and yield reduction, and achieve excellent control effects.

Pending Publication Date: 2020-09-04
DONGGUAN HEC PESTICIDES R&D CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] In agriculture, the damage of pests to the growth and storage of crops will lead to a significant reduction in yield, and the continuous use of insecticides has led to problems such as resistance of pests, service life of insecticides, and pollution to the environment. In order to alleviate the current Various problems in the use of pesticides require the continuous development of new pesticide compounds that are more efficient, low-toxic, environmentally safe and have different modes of action

Method used

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  • Mesoionic insecticide
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Examples

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Embodiment 1

[0207] Example 1: 1-(2-(dimethylamino)ethyl)-8-methyl-4-oxo-3-phenyl-4H-pyridin[1,2-a]pyrimidin-1-ium Synthesis of -2-alkoxide

[0208]

[0209] Will N 1 ,N 1 -Dimethyl-N 2 -(4-methylpyridin-2-yl)ethane-1,2-diamine (0.179g, 1.00mmol), bis(2,4,6-trichlorophenyl) 2-phenylmalonate (0.805g, 1.50mmol) and toluene (15mL) were added to a 50mL single-necked flask, heated to 110°C under reflux and stirred for 24 hours. The solvent was distilled off under reduced pressure, and the residue was separated by silica gel column chromatography [methanol / ethyl acetate (v:v)=1:20] to obtain the target compound (0.06 g of yellow oil, yield: 18.5%).

[0210] 1 H NMR (DMSO-d 6,400MHz)δ(ppm): 9.28(d,J=8.6Hz,1H),7.81(d,J=8.5Hz,2H),7.48(d,J=15.7,8.7Hz,1H),7.36-7.10( m,3H),7.05-6.98(m,1H),5.15(s,2H),2.48-2.43(m,5H),2.31(s,6H);

[0211] MS(ES-API,pos.ion)m / z:324.51[M+1] + .

[0212] Using intermediates N1 to N6 and intermediates M1 to M7 as reactants respectively, the target compounds in T...

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Abstract

The invention relates to a mesoionic compound. Specifically, the present invention relates to a mesoionic compound represented by formula (I) or a stereoisomer, a nitrogen oxide and a salt thereof ofthe mesoionic compound represented by formula (I), and a process for the preparation of mesoionic compounds, and their use as insecticides in agriculture, and their forms of insecticide compositions,as well as methods of controlling pests with these compounds or compositions; wherein R1, R2, R3, R4, R5, Ra, Rb, Rc, Rd, n, R6 and R7 have the meanings described in the invention.

Description

technical field [0001] The present invention relates to the prevention and control of pests, in particular, the present invention relates to a novel mesoionic compound, a preparation method of the novel mesoionic compound and its application as a pest control agent in agriculture. Background technique [0002] In agriculture, the damage of pests to the growth and storage of crops will lead to a significant reduction in yield, and the continuous use of insecticides has led to problems such as resistance of pests, service life of insecticides, and pollution to the environment. In order to alleviate the current Various problems in the use of pesticides require the continuous development of new pesticide compounds that are more efficient, low-toxic, environmentally safe and have different modes of action. Contents of the invention [0003] The novel mesoionic compound disclosed by the invention has an excellent control effect on pests. [0004] In one aspect, the present inve...

Claims

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Application Information

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IPC IPC(8): C07D471/04A01N43/90A01P5/00A01P7/02A01P7/04
CPCC07D471/04A01N43/90
Inventor 李义涛林健肖玉徐俊星钟乐荣
Owner DONGGUAN HEC PESTICIDES R&D CO LTD