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Plant source bactericide and artificial synthesis thereof

A botanical fungicide and artificial synthesis technology, applied in the field of botanical pesticide preparation, achieves the effects of high yield, mild reaction conditions and simple operation

Inactive Publication Date: 2012-05-09
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-derived fungicide, the fungicide is pentyl phthalate, and its molecular formula is C 21 H 32 O 4 , The structural formula is as follows:

[0046] The artificial synthesis method is as follows: (1) Preparation of monopentyl phthalate sodium salt: In a 250ml three-necked flask equipped with an electric stirrer, thermometer, and reflux condenser, phthalic acid and n-pentanol Mix at a molar ratio of 1:1.00, react at 95°C for 1.8h, then cool to 50°C, slowly add 30% NaOH solution dropwise, and adjust the pH to 7.0 to obtain an aqueous solution of monopentyl phthalate sodium salt (2) Synthesis of pentyl phthalate: n-octanol is added to the aqueous solution of sodium monopentyl phthalate, and then a catalyst is added. The catalyst is tetrabutylammonium chloride, the above The molar ratio of phthalic acid, n-octanol and catalyst is 1:1.00:0.01, react at 100°C for 3h, then cool to 50°C; transfer the obtained reaction liquid into a separatory funnel, discard the water After...

Embodiment 2

[0048] A plant-derived fungicide, the fungicide is pentyl phthalate, and its molecular formula is C 21 H 32 O 4 , The structural formula is as follows:

[0049] The artificial synthesis method is as follows: (1) Preparation of monopentyl phthalate sodium salt: In a 250ml three-necked flask equipped with an electric stirrer, thermometer, and reflux condenser, phthalic acid and n-pentanol Mix at a molar ratio of 1:1.20, react at 115°C for 2h, then cool to 60°C, slowly add 20% NaOH solution dropwise, and adjust the pH to 8.5 to obtain an aqueous solution of monopentyl phthalate sodium salt; (2) Synthesis of pentyl phthalate: n-octanol is added to the aqueous solution of sodium monopentyl phthalate, and then a catalyst is added. The catalyst is tributylamine and the phthalic acid The molar ratio of n-octanol and catalyst is 1:1.20:0.01, react at 115℃ for 4h, then cool to 60℃; transfer the obtained reaction liquid into a separatory funnel, discard the water layer and organic layer A...

Embodiment 3

[0051] A plant-derived fungicide, the fungicide is pentyl phthalate, and its molecular formula is C 21 H 32 O 4 , The structural formula is as follows:

[0052] The artificial synthesis method is as follows: (1) Preparation of monopentyl phthalate sodium salt: In a 250ml three-necked flask equipped with an electric stirrer, thermometer, and reflux condenser, phthalic acid and n-pentanol Mix at a molar ratio of 1:1.00, react at 115°C for 1.9h, then cool to 55°C, slowly add 250% NaOH solution dropwise, and adjust the pH to 8.5 to obtain an aqueous solution of monopentyl phthalate sodium salt (2) Synthesis of pentyl octyl phthalate: n-octanol is added to the aqueous solution of sodium monopentyl phthalate, and then a catalyst is added. The catalyst is dodecyl dimethyl bromide Benzylamine, the molar ratio of the above-mentioned phthalic acid, n-octanol and catalyst is 1:1.10:0.01, react at 110℃ for 3.5h, then cool to 55℃; transfer the obtained reaction liquid to liquid separation I...

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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 penta-octyl-ester phthalate and the formula is, firstly the phthalic acid reacts with pantanol at alkaline condition to generate monopentyl-ester soduim-salt phthalate, and then the monopentyl-ester soduim-salt phthalate reacts with octano to generate penta-octyl-ester phthalate solution; the water phase is removed and the organic phase collects volatile component by the distillation way to obtain penta-octyl-ester phthalate. 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 obvious killing function to the plant pathogen such as watermelon, pumpkin, pepper wilt, tomato leaf mold, gray mold, 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. Organic synthetic pesticides, especially chemical pesticides, bring high yields and harvests to crops. At the same time, they have also produced the “3R” that cannot be ignored due to unreasonable use. (Residue, Resistance, Resurgence, that is, residual, resistance, and resurgence) problems. Compared with chemical pesticides, the advantages of plant-derived pesticides are: low toxicity to humans, livestock and beneficial organisms, low residues and easy degradation to products and the environment, and reduce the impact on organisms and the environment while effectively preventing pests and diseases. To the lowest level; the action mode of plant-derived pesticides on the control ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07C67/08C07C69/80A01N37/10A01P3/00
Inventor 王金胜范志宏宋炜陈红兵侯丽娟杜桂婧
Owner SHANXI AGRI UNIV