Compound for preventing and treating bayberry brown spot and composition using same

A brown spot disease and composition technology, which is applied in the field of compounds and compositions for preventing and treating bayberry brown spot disease, and can solve the problems of reduced control effect and the like

Inactive Publication Date: 2017-01-25
GUIZHOU FRUIT INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In recent years, due to long-term single use, bacteria have developed drug resistance to varying degrees, and the control effect has gradually decreased.

Method used

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  • Compound for preventing and treating bayberry brown spot and composition using same
  • Compound for preventing and treating bayberry brown spot and composition using same
  • Compound for preventing and treating bayberry brown spot and composition using same

Examples

Experimental program
Comparison scheme
Effect test

preparation Embodiment 1

[0018] Synthetic steps:

[0019] (1) N-methyl-4-chloropyrrole-2-carboxamide (2mmol) and 2-amino-6-hydroxyquinazoline (2mmol) and CsCO 3 (6 mmol) was added to DMSO (5 mL), and reacted at 80° C. for 5 hours. Concentrated under reduced pressure, purified by silica gel column (eluent CHCl 3 / MeOH=100 / 8), a white solid was obtained with a yield of 85.0%.

[0020] (2) The product (1.22mmol) of step (1) was dissolved in anhydrous DMF (5mL), 80% NaH (6.12mmol) was added at 0°C, and stirred for 15 minutes. Then, 3,4-difluorophenylisocyanate (1.83 mmol) was added, and stirred at 0° C. for 1 hour. Add water and chloroform, stir for 15 minutes, let stand to separate layers, wash the organic layer with water, MgSO 4 Dry and concentrate under reduced pressure. The product was purified on a silica gel column (eluent CHCl 3 / MeOH=100 / 5), the present compound (56 mg) was obtained as a white powder.

[0021] Structure Identification: 1 HNMR (DMSO-d6): δ (ppm), 11.30 (s, 1H, NH), 9.99 (s...

preparation Embodiment 2

[0025] The organic compound prepared in step (2) above was placed in a quartz ampoule. The prepared compound was vacuum dehydrated at a temperature of 100°C. The tube was disengaged and placed in a crystal growth furnace. Crystals were grown by the Bridgman method in a double furnace with an insulating film. Finally, colorless strip crystals were obtained. Carry out single crystal X-ray diffraction crystallographic analysis to this crystal, crystallographic parameter is as follows: monoclinic system, its space group is C2 / c, α=γ=90°, β=103±5°.

preparation Embodiment 3

[0027]

[0028]

[0029] Mix various ingredients together, and shear in a shearing kettle until the particle size of the active ingredient is less than 3 μm. The function of the emulsifier is that when it is dispersed on the surface of the dispersant, the formation of a thin film or electric double layer can make the dispersed phase charge, and prevent the small droplets of the dispersed phase from coagulating with each other. Isopropanol and xylene can effectively fuse emulsifiable concentrate with water and maintain its stability.

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Abstract

The invention provides an organic compound for preventing and treating waxberry brown patch and a composition thereof. The organic compound can be prepared into the dosage forms, such as soluble liquor, a microemulsion, an emission in water, a suspoemulsion, a seed coating, a wettability powder granule, a slow-release granule, a controlled-release granule, a water dispersible granule, a dry suspension emulsion, or granules which can be directly used and the like. The composition is used for preventing and treating the waxberry brown patch.

Description

technical field [0001] The invention relates to the field of pesticide compounds and compositions thereof, in particular to a compound and composition for preventing and treating bayberry brown spot disease. Background technique [0002] Myrica mycosphaerlla leaf spot (Myrica mycosphaerlla leaf spot) is the main disease of Dongkui bayberry. It mainly harms the spring, summer and autumn shoot leaves of that year. The pathogen produces ascospores at the end of April and early May and spreads them by wind and rain. The new leaves are infected. Symptoms began to appear in August after the disease, and the peak of the disease occurred in October. When it was severe, it caused a large number of leaves to die and fall off in November to December, and caused the death of flower buds and twigs, seriously affecting the vigor of bayberry trees and the output of next year. [0003] The incubation period of bayberry brown spot is longer, and it has greater concealment and explosiveness. ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07D403/12A01N47/36A01P3/00
CPCA01N47/36C07D403/12
Inventor 刘涛罗福贤蔡永强罗欢范建新
Owner GUIZHOU FRUIT INST
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