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Heterocyclicmethrin compound and its uses in weeding and sterilization

A technology of heterothrins and compounds, which is applied in the field of heterothrins and their application in herbicides and fungicides, and can solve the problem of low activity

Inactive Publication Date: 2006-02-22
DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In some reports, pyrethroids are not active as herbicides or fungicides

Method used

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  • Heterocyclicmethrin compound and its uses in weeding and sterilization
  • Heterocyclicmethrin compound and its uses in weeding and sterilization

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Example 1 Preparation and activity of 4-methyl-2-hydroxyl-3-nitropyridine trans-D-DV permethrin

[0022] Preparation: Prepare 4-methyl-2-hydroxy-3-nitropyridine and equimolar amounts of triethylamine into a dichloromethane solution with a concentration of 0.5mol / L. Take 2mL of this solution into the reaction flask, shake at room temperature for 0.5h, and cool the reaction system. Similarly, the trans-dextrorotatory DV chrysanthemum acid chloride was formulated into a 0.5 mol / L dichloromethane solution (DMC). After the reaction system was cooled to -5°C, it was maintained for 20 minutes, and 2 mL of the chrysanthemic acid chloride solution prepared earlier was added to the reaction flask in an equimolar amount. After 1 hour, the cycle freezing was stopped, and it was allowed to rise to room temperature naturally, while keeping shaking overnight. The progress of the reaction was detected by TLC. After the reaction was completed, 3 mL of saturated sodium bicarbonate solut...

Embodiment 2

[0024] Example 2 Preparation and activity of 2-amino-6-picoline trans-D-DV permethrin

[0025] Preparation: Prepare 2-amino-6-picoline and equimolar amounts of triethylamine into a dichloromethane solution with a concentration of 0.5mol / L. Take 2mL of this solution into the reaction flask, shake at room temperature for 0.5h, and cool the reaction system. Similarly, the trans-dextrorotatory DV chrysanthemum acid chloride was formulated into a 0.5 mol / L dichloromethane solution (DMC). After the reaction system was cooled to -5°C, it was maintained for 20 minutes, and 2 mL of the chrysanthemic acid chloride solution prepared earlier was added to the reaction flask in an equimolar amount. After 1 hour, the cycle freezing was stopped, and it was allowed to rise to room temperature naturally, while keeping shaking overnight. The progress of the reaction was detected by TLC. After the reaction was completed, 3 mL of saturated sodium bicarbonate solution was added to the reaction bot...

Embodiment 3

[0027] Example 3 Preparation and activity of 2-hydroxy-5-nitropyridine trans-D-DV permethrin

[0028] Preparation: Prepare 2-hydroxy-5-nitropyridine and equimolar amounts of triethylamine into a dichloromethane solution with a concentration of 0.5mol / L. Take 2mL of this solution into the reaction flask, shake at room temperature for 0.5h, and cool the reaction system. Similarly, the trans-dextrorotatory DV chrysanthemum acid chloride was formulated into a 0.5 mol / L dichloromethane solution (DMC). After the reaction system was cooled to -5°C, it was maintained for 20 minutes, and 2 mL of the chrysanthemic acid chloride solution prepared earlier was added to the reaction flask in an equimolar amount. After 1 hour, the cycle freezing was stopped, and it was allowed to rise to room temperature naturally, while keeping shaking overnight. The progress of the reaction was detected by TLC. After the reaction was completed, 3 mL of saturated sodium bicarbonate solution was added to th...

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PUM

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Abstract

The invention provides heterocyclic pyrethrin compounds having good biological activity to six tested weed control targeted wheat, barnyard grass, Chinese sorghum, rape, radish and cucumber. During the sterilization active test, the compounds show very high biological activity to phytophthora cryptogea pethybridge & lafferty, Pythiumaphanidermatum(Eds.) Fitzp., apple melanomyces, cucumber gray mold, wheat leaf blight bacterium, Gibberella zeae, rice blast bacterium, cotton soreshin, and other six kinds of in vivo targeted bacteria.

Description

Technical field: [0001] The invention relates to pyrethrins, and in particular provides a novel heterocyclethrin compound and its application in weeding and sterilization. Background technique: [0002] Pyrethroids are a class of well-known and highly effective insecticides that have been widely used in agricultural production, but there are few successful examples of their herbicidal and fungicidal activities. Moreover, in the development of modern pesticides, pyrethroid compounds do not fully meet the requirements of green environmental protection. As insecticides, pyrethroid compounds have reached maturity, but as herbicides or fungicides, pyrethroid compounds have not yet been developed and utilized by people. In some reports, pyrethroids are not active as herbicides or fungicides. Invention content: [0003] The purpose of the present invention is to provide a novel heterothrin compound with high herbicidal and bactericidal activity, so as to further develop a class...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07D213/61A01N43/40
Inventor 万伯顺肖远胜梁鑫淼吴凡
Owner DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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