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Pyrazole amide compound and application and bactericide thereof

A technology of pyrazole amide and compound, which is applied in the field of pesticides and fungicides, can solve problems such as poor control effect and achieve good control effect.

Active Publication Date: 2019-06-25
SHANDONG UNITED PESTICIDE IND CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0014] The purpose of the present invention is to overcome the poor control effect of the pyrazole amide compounds of diphenyl ether provided by the prior art on soybean rust, corn rust, wheat powdery mildew, cucumber powdery mildew and rice sheath blight or at low concentrations to Defects of soybean rust, corn rust, wheat powdery mildew, cucumber powdery mildew and rice sheath blight, which are poorly controlled Pyrazole amides with excellent control effects on both powdery mildew and rice sheath blight

Method used

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  • Pyrazole amide compound and application and bactericide thereof
  • Pyrazole amide compound and application and bactericide thereof
  • Pyrazole amide compound and application and bactericide thereof

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Embodiment 1

[0039] The pyrazole amide compounds of the structure shown in formula (1) are prepared by adopting the synthesis route described above in the present invention, specifically as follows:

[0040] (1) Preparation of compounds shown in 1-3

[0041] Add 3mmol of the compound shown in 1-2, 3.3mmol of the compound shown in 1-1 and 3.6mmol of potassium carbonate into a 50mL round bottom flask, then add 20mL of DMF, raise the temperature to 100°C, and monitor the completion of the reaction of the raw materials by TLC After stopping the reaction, 50 mL of ethyl acetate was added, washed twice with 50 mL of saturated brine, and then dried with anhydrous sodium sulfate. After removing the solvent under reduced pressure, the intermediate 1-3 was obtained by column chromatography with a yield of 55%.

[0042] brown liquid, 1H NMR (600MHz, DMSO) δ8.02 (s, 1H), 7.96 (d, J = 8.5Hz, 1H), 7.04 (dd, J = 11.0, 4.3Hz, 1H), 6.90 (dd, J = 10.1, 9.0Hz, 3H), 6.65–6.58(m, 1H), 4.99(s, 2H).GC-MS: m / z ...

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Abstract

The invention relates to the field of pesticides, and discloses a pyrazole amide compound as well as an application and a bactericide thereof. The pyrazole amide compound has a structure as shown in the specification. The pyrazole amide compound provided by the invention has an obvious prevention effect on soybean rust, corn rust, wheat powdery mildew, cucumber powdery mildew and rice sheath blight under low concentration.

Description

technical field [0001] The invention relates to the field of pesticide fungicides, in particular to a pyrazole amide compound and its application, and a fungicide containing the pyrazole amide compound. Background technique [0002] Fungicides targeting succinate dehydrogenase (SDH, succinate dehydrogenase) are currently the most important type of fungicides. This type of fungicides inhibits the activity of pathogenic bacteria succinate dehydrogenase, causing the death of pathogenic bacteria and achieving for the purpose of disease control. [0003] Since this type of fungicide has a novel mechanism of action and has no cross-resistance with most fungicides currently on the market, it has become a research hotspot for major pesticide companies in the world. [0004] Among these fungicides, pyrazole amide compounds are the most numerous species on the market. Due to their wide bactericidal spectrum and high activity, they can prevent and control a variety of crop diseases in...

Claims

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Application Information

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IPC IPC(8): C07D231/14A01N43/56A01P3/00
CPCA01N43/56C07D231/14A01N25/04A01N25/12C07D231/44
Inventor 杨光富李华
Owner SHANDONG UNITED PESTICIDE IND CO LTD
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