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Thiadiazole quinoline organic copper compound, preparation method thereof, preparation thereof, and application thereof in controlling agricultural plant diseases

A thiadiazoquinoline and compound technology are applied in the field of preventing and treating agricultural plant diseases, thiadiazoquinoline organocopper compounds and their preparation fields, and can solve the problems of sensitive plant phytotoxicity, rust tick value-added, crop phytotoxicity and the like , to achieve the effect of easy industrial production, mild reaction conditions and broad sterilization spectrum

Inactive Publication Date: 2014-07-02
NORTHWEST A & F UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It is characterized by an advantageous protective fungicide with low cost, but its disadvantages are: first, it is easy to cause phytotoxicity, and its use is prohibited or restricted during the flowering and young fruit stages; second, its miscibility is poor, and most of the inorganic copper preparations are Alkaline pesticides cannot be mixed with most pesticides, and it is inconvenient to use; third, it is easy to cause the value-added of mites and rust ticks, which increases the cost of control in disguise; fourth, the treatment effect is not strong, and it is not easy to use on rice use
[0008] Although copper fungicides have many advantages, excessive copper ions can easily cause phytotoxicity to crops
Studies have shown that copper ions can kill pathogenic bacteria at 10mg / L, and cause phytotoxicity to sensitive plants when the concentration reaches 30mg / L
Have not yet seen the relevant reports of thiadiazole-quinoline compound copper-2-amino-5-mercapto-1,3,4-thiadiazole-8-hydroxyquinoline and its preparation method, and have not found that thiadiazole Related reports on the use of oxazoquinoline compound copper-2-amino-5-mercapto-1,3,4-thiadiazole-8-hydroxyquinoline in the control of agricultural plant diseases

Method used

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  • Thiadiazole quinoline organic copper compound, preparation method thereof, preparation thereof, and application thereof in controlling agricultural plant diseases
  • Thiadiazole quinoline organic copper compound, preparation method thereof, preparation thereof, and application thereof in controlling agricultural plant diseases
  • Thiadiazole quinoline organic copper compound, preparation method thereof, preparation thereof, and application thereof in controlling agricultural plant diseases

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029]5.6g of 99% 2-amino-5-mercapto-1,3,4-thiadiazole, 6.4g of 98% 8-hydroxyquinoline and 260ml of 75% ethanol solution in one go Put it into a 500ml reaction bottle, heat and dissolve at a temperature of 75°C to obtain solution A, add 2.5g of copper sulfate pentahydrate with a purity of 99% and 25ml of distilled water into a 500ml reaction bottle, heat, and at a temperature of 42°C Stir to fully dissolve, after the copper sulfate is completely dissolved in water, under the action of stirring, add solution A dropwise (0.02-0.04ml per drop) into the aqueous solution of copper sulfate, and the dropwise addition is completed within 27 minutes , then temperature controlled at 70°C, stirred for 1 hour, allowed to stand for precipitation for 4.5 hours after reaction, after fully layered, removed the upper layer solution, and the grayish-brown precipitate in the lower layer was washed with absolute ethanol (or ethanol) and water successively, and then kept at a constant temperature ...

Embodiment 2

[0035] The preparation method of copper-2-amino-5-mercapto-1,3,4-thiadiazole-8-hydroxyquinoline is the same as in Example 1.

[0036] Get the following materials in percentage by weight: Copper-2-amino-5-mercapto-1,3,4-thiadiazole-8-hydroxyquinoline 20.0% prepared in this example, octylphenol polyoxyethylene Base ether 1.0%, dibutyl naphthalene sulfonate sodium formaldehyde condensate 4.5%, white carbon black 74.5%, mix each material fully according to the above ratio, grind and pass through a 320 mesh sieve to get 20% thiadiazoquinolines Organocopper compound wettable powder.

[0037] The tested strain is rice bacterial blight, which is provided by the Pesticide Research Institute of Northwest Agriculture and Forestry University. The prepared 20% thiadiazoquinoline organocopper compound wettable powder is determined by routine antibacterial tests according to conventional methods. 20% carbendazim wettable powder (the excipients and content are the same as the 20% thiadiazoqu...

Embodiment 3

[0039] 5.5g of 99% 2-amino-5-mercapto-1,3,4-thiadiazole, 6.6g of 98% 8-hydroxyquinoline and 240ml of 95% mass fraction of methanol aqueous solution Put it into a 500ml reaction bottle, heat and dissolve at a temperature of 95°C to obtain solution A, add 2.5g of copper sulfate pentahydrate with a purity of 99% and 25ml of distilled water into a 500ml reaction bottle, heat, and at a temperature of 40°C Stir to fully dissolve, after the copper sulfate is completely dissolved in water, add solution A dropwise (0.02-0.04ml per drop) to the aqueous solution of copper sulfate under the action of stirring, and complete the dropwise addition within 25 minutes , then control the temperature at 68°C, stir and react for 1h, let it stand for 4h after the reaction, and remove the upper layer solution after fully layering, and wash the gray-brown precipitate in the lower layer with absolute ethanol (or ethanol) and water successively, and then dry at constant temperature Dry it in an oven at...

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Abstract

The invention discloses a thiadiazole quinoline organic copper compound, a preparation method thereof, a preparation thereof, and an application thereof in controlling agricultural plant diseases. According to the invention, 2-amino-5-sulfhydryl-1,3,4-thiadiazole, 8-oxyquinoline and cupric salt are added to an organic solvent; the mixture is subject to a reaction for 1-3h; when the reaction is finished, a product is separated, washed, and dried, such that the thiadiazole quinoline organic copper compound is obtained. The preparation method provided by the invention is simple and feasible; the cost is low; and no environment pollution is caused. The prepared novel thiadiazole quinoline compound which is copper-2-amino-5-sulfhydryl-1,3,4-thiadiazole-8-oxyquinoline is advantaged in stable property and wide sterilizing spectrum. The compound can be widely applied for controlling agricultural plant diseases such as tomato late blinght, cucumber downy mildew, lychee downy mildew, apple ring spot, paddy bacterial blight and bacterial leaf streak, and citrus canker.

Description

technical field [0001] The invention belongs to the technical field of pesticide chemical industry, and in particular relates to a thiadiazoquinoline organic copper compound, a preparation method, a preparation and an application in preventing and treating agricultural plant diseases. Background technique [0002] The molecular formula of 2-amino-5-mercapto-1,3,4-thiadiazole is C 2 h 3 N 3 S 2 , molecular weight 133.20, white crystalline powder, soluble in hot water and organic solvents such as pyridine and dimethylformamide, slightly soluble in methanol and acetone. It is mainly used for fungicide Yebuazole pesticide intermediates and pharmaceutical intermediates. [0003] The molecular formula of 8-hydroxyquinoline is C 9 h 7 NO, molecular weight 145.16, white or light yellow crystal or crystalline powder, insoluble in water and ether, soluble in ethanol, acetone, chloroform, benzene or dilute acid, amphoteric compound, soluble in strong acid and strong alkali, in al...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07F1/08A01N55/02A01P1/00A01P3/00
Inventor 王永华张慧晓刘蒙蒙周伟王高学段金友
Owner NORTHWEST A & F UNIV
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