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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, mild reaction conditions and high inhibition rate

Inactive Publication Date: 2009-05-13
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

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] A plant source fungicide, the fungicide is pentyl phthalate, and its molecular formula is C 21 h 32 o 4 , the structural formula is as follows:

[0046]

[0047] Its artificial synthesis method is: (1) monopentyl phthalate sodium salt

[0048] Preparation: In a 250ml three-neck flask equipped with an electric stirrer, a thermometer, and a reflux condenser, mix phthalic acid and n-amyl alcohol at a molar ratio of 1:1.00, react at a temperature of 95°C for 1.8h, and then cool to 50°C, slowly add 30% NaOH solution dropwise, and adjust the pH value to 7.0 to obtain an aqueous solution of monoamyl phthalate sodium salt; (2) Synthesis of pentyl phthalate: in the above-mentioned phthalate Add n-octanol to the aqueous solution of monoamyl formate sodium salt, and then add a catalyst, the catalyst is tetrabutylammonium chloride, and the molar ratio of the above-mentioned phthalic acid, n-octanol and catalyst is 1:1.00:0.01 , reacted at a temperature of 100°C for 3h, then ...

Embodiment 2

[0050] A plant source fungicide, the fungicide is pentyl phthalate, and its molecular formula is C 21 h 32 o 4 , the structural formula is as follows:

[0051]

[0052] Its artificial synthesis method is: (1) Preparation of monoamyl phthalate sodium salt: in a 250ml three-necked bottle equipped with an electric stirrer, a thermometer, and a reflux condenser, the Mix at a molar ratio of 1:1.20, react at a temperature of 115°C for 2 hours, then cool to 60°C, slowly add 20% NaOH solution dropwise, and adjust the pH value to 8.5 to obtain an aqueous solution of monoamyl phthalate sodium salt; (2) Synthesis of pentyl pentyl phthalate: add n-octanol in the aqueous solution of above-mentioned monopentyl phthalate sodium salt, then add catalyzer, described catalyzer is tributylamine, above-mentioned phthalic acid The molar ratio of n-octanol and catalyst is 1:1.20:0.01, react at a temperature of 115°C for 4h, then cool to 60°C; transfer the resulting reaction solution into a sep...

Embodiment 3

[0054] A plant source fungicide, the fungicide is pentyl phthalate, and its molecular formula is C 21 h 32 o 4 , the structural formula is as follows:

[0055]

[0056] Its artificial synthesis method is: (1) Preparation of monoamyl phthalate sodium salt: in a 250ml three-necked bottle equipped with an electric stirrer, a thermometer, and a reflux condenser, the Mix at a molar ratio of 1:1.00, react at a temperature of 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 monoamyl phthalate sodium salt (2) Synthetic of pentyl phthalate: add n-octanol in the aqueous solution of above-mentioned monopentyl phthalate sodium salt, then add catalyst, described catalyzer is dodecyl dimethyl bromide Base benzylamine, the molar ratio of the above-mentioned phthalic acid, n-octanol and catalyst is 1:1.10:0.01, react at a temperature of 110°C for 3.5h, then cool to 55°C; Put the water layer in the funne...

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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 as figure, 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. 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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IPC IPC(8): A01N37/10A01P3/00C07C67/08C07C69/80
Inventor 范志宏宋炜陈红兵侯丽娟杜桂婧
Owner SHANXI AGRI UNIV
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