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

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...

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

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