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Oxazole organic copper compound, and preparation method and preparation thereof and purpose thereof in control of agricultural plant disease

A compound, organic copper technology, applied in the field of pesticide chemical industry, can solve the problems of sensitive plant damage, increased control cost, poor mixability, etc., and achieve the effect of easy industrial production, good cost advantage, and mild reaction conditions

Inactive Publication Date: 2014-04-09
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; fourth, the treatment effect is not strong, and it is not easy to use on rice
[0007] 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 report of oxazole compound copper-3-hydroxyl-5-methylisoxazole and preparation method thereof, more do not find that oxazole compound copper-3-hydroxyl-5-methylisoxazole Related reports on agricultural plant disease control

Method used

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  • Oxazole organic copper compound, and preparation method and preparation thereof and purpose thereof in control of agricultural plant disease
  • Oxazole organic copper compound, and preparation method and preparation thereof and purpose thereof in control of agricultural plant disease
  • Oxazole organic copper compound, and preparation method and preparation thereof and purpose thereof in control of agricultural plant disease

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Dissolve 9.6g of hydroxylamine hydrochloride (industrial product) with a purity of 98% in 100ml of pure water, add 50ml of a 30% mass fraction of sodium hydroxide aqueous solution to neutralize after cooling to 5°C to obtain a mixed solution, and mix the solution dropwise (0.02-0.04ml per drop) was added dropwise to 100ml of ethyl acetoacetate, and the dropwise addition was completed within 15 minutes, then the temperature was controlled at 5°C, and the reaction was stirred for 1.5 hours. After the reaction was completed, 30ml of concentrated sulfuric acid with a mass fraction of 98% was added , stirred and reacted at 25°C for 2h, concentrated in vacuo after the reaction to obtain light yellow crystals, heated the light yellow crystals with benzene to reflux for 2h, evaporated the solvent, and finally recrystallized with n-hexane to obtain the compound 3-hydroxy-5-methyliso For oxazole, take 4.6g of the prepared 3-hydroxy-5-methylisoxazole and 140ml of 75% ethanol aqueou...

Embodiment 2

[0036] The preparation method of copper-3-hydroxyl-5-methylisoxazole is the same as in Example 1.

[0037] Get each material of following percentage by weight: Copper-3-hydroxyl-5-methylisoxazole 20.0%, octylphenol polyoxyethylene ether 1.0%, sodium dibutylnaphthalene sulfonate prepared in this embodiment 4.5% formaldehyde condensate, 74.5% white carbon black, according to the above proportions, the materials are fully mixed, ground and passed through a 320-mesh sieve to obtain a 20% oxazole organic copper compound wettable powder.

[0038] The tested strain is bacterial blight of rice, which is provided by the Pesticide Research Institute of Northwest Agriculture and Forestry University. The wettable powder of 20% oxazole organocopper compound prepared by conventional method is determined by routine antibacterial test. The wettable powder of mycomethazol or carbendazim (the auxiliary materials and their contents are all the same as the 20% oxazole organic copper compound wett...

Embodiment 3

[0040] Get 4.8g of commercially available purity as 98% hymexazol and 240ml mass fraction of 95% aqueous methanol solution disposable drop into 500ml reaction flask, heat and dissolve at 80°C to obtain solution A; Add 99% copper sulfate pentahydrate and 25ml distilled water into a 500ml reaction bottle, heat, and stir at a temperature of 40°C to make it fully dissolve. After the copper sulfate is completely dissolved in water, under the action of stirring, the solution A Add dropwise (0.02 ~ 0.04ml per drop) into the aqueous solution of copper sulfate, dropwise within 25min, then control the temperature at 65°C, stir and react for 1h, after the reaction, let stand for precipitation for 4h, after fully layering, The upper solution was removed, and the lower green precipitate was washed with absolute ethanol (or ethanol) and water in turn, and then dried in a constant temperature drying oven at 110°C to obtain a green powder that was copper-3-hydroxy-5-methyliso Oxazole.

[004...

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Abstract

The invention discloses an oxazole organic copper compound, and a preparation method and a preparation thereof and purpose thereof in control of agricultural plant diseases. The method comprises steps of: carrying out aqueous phase process on hydroxylamine hydrochloride and ethyl acetoacetate too generate 3-hydroxy-5-methyl isoxazole; adding the compound and cupric salt into an organic solvent for reaction; successively carrying out separation, washing and drying after the reaction. The preparation method of the invention is simple, practical, low-cost and pollution-free; and the prepared novel oxazole compound copper-3-hydroxy-5-methyl isoxazole has stable property and wide sterilization spectrum, can be used in controlling agricultural plant diseases, especially in controlling diseases canused by Fusarium sp, Aphanomyces invadans, pythium and corticium, and has special effects on various soil borne diseases and seedling blight.

Description

technical field [0001] The invention belongs to the technical field of pesticide chemical industry, and in particular relates to an oxazole organic copper compound, a preparation method, a preparation and an application in preventing and controlling agricultural plant diseases. Background technique [0002] The molecular formula of 3-hydroxy-5-methylisoxazole (hymexazole) is C 4 h 5 NO 2 , with a molecular weight of 99, soluble in most organic solvents, stable in acid and alkali solutions, non-corrosive, and a systemic fungicide and plant growth regulator. It has excellent systemic and conductive properties, so that it can be directly absorbed by the roots of plants, enter the plants, and move extremely quickly. It moves to the stem within 3 hours after moving in the root system, and moves to the whole body of the plant within 24 hours. Its metabolites in the plant are two kinds of glucosides, which can promote plant growth and root development. In addition, 3-hydroxy-5-...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07D261/12A01N43/80A01P1/00A01P3/00
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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