Plant source bactericide and artificial synthesis thereof

A botanical fungicide and artificial synthesis technology, which is applied in the field of botanical pesticide preparation to achieve the effects of high yield, simple operation and high inhibition rate

Inactive Publication Date: 2011-10-26
SHANXI AGRI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The present invention provides a botanical fungicide and its artificial synthesis method in order to solve the problem that there are no reports about using some essential oil components in marigolds as botanical fungicides and applying them to pathogens such as watermelon wilt

Method used

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  • Plant source bactericide and artificial synthesis thereof
  • Plant source bactericide and artificial synthesis thereof
  • Plant source bactericide and artificial synthesis thereof

Examples

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Effect test

Embodiment 1

[0045] A plant source fungicide, the fungicide is 2,4-dicyclopentane cyclopentanone, and its molecular formula is C 15 h 20 O, the structural formula is as follows:

[0046] Its synthetic method is: (1) in the 250ml four-neck bottle that stirrer, thermometer, reflux condenser and dropping funnel are housed, add cyclopentanone dropwise in the sodium hydroxide solution of 1mol / L, fully Stir, and then continue to add a catalyst in the reaction solution, and the catalyst is dodecyldimethylbenzylamine bromide. Heating and stirring at a temperature of 80° C. for 1 h until the reaction is complete and the reaction solution turns yellow, the molar ratio of the above-mentioned sodium hydroxide, cyclopentanone and the catalyst is 1: 0.36: 0.01; (2) transfer the above-mentioned reaction solution to the In the liquid funnel, discard the water layer, wash the oil layer with water repeatedly, distill under reduced pressure, collect the fraction at 300-302°C, and obtain a yellow oily liq...

Embodiment 2

[0048] A plant source fungicide, the fungicide is 2,4-dicyclopentane cyclopentanone, and its molecular formula is C 15 h 20 O, the structural formula is as follows:

[0049] Its artificial synthesis method is: (1) in the 250ml four-neck bottle of the dropping funnel that agitator, thermometer, reflux condenser and dropping funnel are housed, add cyclopentanone dropwise in the sodium hydroxide solution of 1mol / L, Fully stir, then continue to add catalyst in reaction liquid, described catalyst is chitosan quaternary ammonium salt. Heating and stirring at a temperature of 120° C. for 2.5 h, until the reaction is complete and the reaction solution turns yellow, the molar ratio of the above-mentioned sodium hydroxide, cyclopentanone and the catalyst is 1: 0.43: 0.01; (2) the above-mentioned reaction solution is transferred to In a separatory funnel, discard the water layer, wash the oil layer repeatedly with water, distill under reduced pressure, collect the fraction at 300-302...

Embodiment 3

[0051] A plant source fungicide, the fungicide is 2,4-dicyclopentane cyclopentanone, and its molecular formula is C 15 h 20 O, the structural formula is as follows:

[0052] Its artificial synthesis method is: (1) in the 250ml four-neck bottle of the dropping funnel that agitator, thermometer, reflux condenser and dropping funnel are housed, add cyclopentanone dropwise in the sodium hydroxide solution of 1mol / L, Stir well, and then continue to add catalyst in the reaction solution, and the catalyst is tri(2-ethyl)hexylamine. Heating and stirring at a temperature of 80°C for 2.5h until the reaction is complete and the reaction solution turns yellow, the molar ratio of the above-mentioned sodium hydroxide, cyclopentanone and the catalyst is 1:0.40:0.01; (2) the above-mentioned reaction solution is transferred to In the separatory funnel, discard the water layer, wash the oil layer repeatedly with water, distill under reduced pressure, collect the fraction at 300-302°C, and o...

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Abstract

The invention relates to the preparation domain of plant source pesticide, especially a plant source bactericide and artificial synthesis method thereof, in order to solve that the essential oil in marigold is used as plant source bactericide and applied in plant pathogen. The bactericide is 2,4-bicycloalkene-pentane-cyclopentanone the formula is as figure, firstly the cyclopentanone is heated alkalinity condition to generate 2-bicycloalkene-pentane-cyclopentanone, and then the 2-bicycloalkene-pentane-cyclopentanone reacts with cyclopentanone to generate 2,4-bicycloalkene-pentane-cyclopentanone in the presence of catalyst; the water layer, oil layer are removed by the distillation way to collect volatile component to obtain 2,4-bicycloalkene-pentane-cyclopentanone. The plant source bactericide has features of simple operation method, mild reaction condition, high yield, suitable for large-scale industrialization production, more important, the plant source bactericide is applied for the plant source pesticide, with killing function to the plant pathogen such as watermelon, pepper wilt, Pestalotiopsis sp, Sclerotinia sclerotiorum, with high inhibition rate and provides new path of the development of Chinese plant source pesticide.

Description

technical field [0001] The invention relates to the field of preparation of botanical pesticides, in particular to a botanical fungicide and an artificial synthesis method thereof. Background technique [0002] The application of pesticides is an important means to ensure the increase of food production. Organically synthesized pesticides, especially chemical pesticides, while bringing high crop yields and harvests, also produce "3R" due to unreasonable use. (Residue, Resistance, Resurgence, that is, residue, resistance, and resurgence) issues. Compared with chemical pesticides, the advantages of botanical pesticides are: low toxicity to humans, animals and beneficial organisms, low residue and easy degradation to products and the environment, while effectively preventing and controlling pests and diseases, the impact on organisms and the environment is reduced. To the lowest degree; the mode of action of botanical pesticides on the control objects is mostly gastric toxicit...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07C49/653C07C45/72A01N35/06A01P3/00
Inventor 郭春绒范志宏张光明王文斌郭小建李巧英郭晓宇
Owner SHANXI AGRI UNIV
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