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Thiazole quinoline organic copper compound and its preparation method, preparation and application in controlling agricultural plant diseases

A technology of thiazoquinoline and thiazoquinoline, applied in the direction of copper organic compounds, botany equipment and methods, biocides, etc., can solve the problems of weak effect, rust tick value-added, crop phytotoxicity, etc., and achieve easy Industrialized production, mild reaction conditions and wide bactericidal 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
Have not yet seen the relevant report of novel thiazoquinoline compound copper-2-mercaptobenzothiazole-8-hydroxyquinoline and its preparation method, and have not found the novel thiazoquinoline compound copper-2-mercaptobenzothiazole Related reports on the application of thiazole-8-hydroxyquinoline in the control of agricultural plant diseases

Method used

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  • Thiazole quinoline organic copper compound and its preparation method, preparation and application in controlling agricultural plant diseases
  • Thiazole quinoline organic copper compound and its preparation method, preparation and application in controlling agricultural plant diseases
  • Thiazole quinoline organic copper compound and its preparation method, preparation and application in controlling agricultural plant diseases

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] 6.6g of 99% 2-mercaptobenzothiazole, 5.4g of 98% 8-hydroxyquinoline and 260ml of 75% mass fraction of ethanol solution were thrown into a 500ml reaction flask at one time at a temperature of 74°C. Heat and dissolve under low temperature 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 flask, heat, and stir at a temperature of 42°C to fully dissolve it. After completely dissolving, add solution A dropwise (0.02-0.04ml per drop) into the aqueous solution of copper sulfate under the action of stirring, and complete the dropwise addition within 28 minutes, then control the temperature at 70°C, and stir for 1 hour. , after the reaction, let it stand for 4.5h to precipitate, after fully separating the layers, remove the upper layer solution, wash the dark green precipitate in the lower layer with absolute ethanol (or ethanol) and water in turn, and then dry it in a constant temperature drying o...

Embodiment 2

[0035] The preparation method of copper-2-mercaptobenzothiazole-8-hydroxyquinoline is the same as in Example 1.

[0036] Get the following materials in percentage by weight: 20.0% of copper-2-mercaptobenzothiazole-8-hydroxyquinoline prepared in this embodiment, 1.0% of octylphenol polyoxyethylene ether, dibutylnaphthalenesulfonic acid 4.5% of sodium formaldehyde condensate, 74.5% of white carbon black, according to the above proportions, the materials are fully mixed, ground and passed through a 320-mesh sieve to obtain 20% thiazoquinoline organocopper compound wettable powder.

[0037] The test strain is rice bacterial blight, which is provided by the Pesticide Research Institute of Northwest Agriculture and Forestry University. The prepared 20% thiazoquinoline organocopper compound wettable powder is determined by routine antibacterial test according to the conventional method, to contain 20% The wettable powder of carbendazim (the excipients and their contents are the same ...

Embodiment 3

[0039] 6.5g of 2-mercaptobenzothiazole with a purity of 99%, 5.6g of 8-hydroxyquinoline with a purity of 98%, and 140ml of a mass fraction of 95% aqueous methanol were thrown into a 500ml reaction flask at one time, at a temperature of 85°C. Heat and dissolve under low temperature 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 flask, heat, and stir at a temperature of 30°C to fully dissolve it. After complete dissolution, add solution A drop by drop (0.02-0.04ml per drop) to the aqueous solution of copper sulfate under the action of stirring, complete the dropwise addition within 25 minutes, then control the temperature at 65°C, and stir for 1 hour After the reaction, let it stand for precipitation for 4 hours. After the layers are fully separated, remove the upper layer solution, and the dark green precipitate in the lower layer is washed with absolute ethanol (or ethanol) and water in turn, ...

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Abstract

The invention discloses a thiazole quinoline organic copper compound and its preparation method, preparation and application in controlling agricultural plant diseases. The thiazole quinoline organic copper compound is prepared by adding 2-mercaptobenzothiazole, 8-hydroxyquinoline and a cupric salt in an organic solvent for a reaction for 1 to 3 h and sequentially carrying out separation, rinsing and drying after the reaction is finished. The preparation method provided in the invention has the advantages of simpleness, easy practicability, low cost and no environmental pollution; the prepared novel thiazole quinoline organic compound copper-2-mercaptobenzothiazole-8-hydroxyquinoline has stable properties and a broad fungicide spectrum and can be widely used for control of agricultural plant diseases like tomato late blight, cucumber downy mildew, lichee downy mildew, apple ring rot, etc.

Description

technical field [0001] The invention belongs to the technical field of pesticide chemical industry, and in particular relates to a thiazoquinoline 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-mercaptobenzothiazole is C 7 h 5 NS 2 , molecular weight 167.24, light yellow powder, soluble in alkaline solutions such as propanol, ethanol, chloroform, ammonia, sodium hydroxide and sodium carbonate, slightly soluble in benzene, insoluble in water and gasoline. It is mainly used as a rubber vulcanizing agent (accelerator M) and also as a pesticide fungicide, commonly known as hydrogen sulfide agent or M agent, but its activity is low and has not been widely used. 2-Mercaptobenzothiazole is also industrially used as a corrosion inhibitor for metal copper. In order to explore the corrosion inhibition mechanism of 2-mercaptobenzothiazole,...

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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