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Purification method of tembotrions product

A purification method and technology of cyclosulfonone, applied in chemical instruments and methods, organic chemistry, preparation of organic compounds, etc., to achieve the effect of improving purity and reducing content

Active Publication Date: 2020-07-24
利民化学有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] In order to solve the deficiencies in the prior art, the object of the present invention is to provide a purification method for tembotrione products, to solve the problems of the Ames test experiment of tembotrione products and to purify tembotrione products

Method used

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  • Purification method of tembotrions product
  • Purification method of tembotrions product
  • Purification method of tembotrions product

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] The cyanide impurity content of the unpurified tembotrione product after different treatments is compared in the following table 1:

[0035]

[0036]

[0037]

Embodiment 2

[0039] The content of cyanide impurities after the product tembotrione is processed in different aqueous solutions is compared in the following table two:

[0040]

[0041]

Embodiment 3

[0043] The cyanide impurity content after the product tembotrione is processed in different water contents is compared in the following table three:

[0044]

[0045]

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PUM

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Abstract

The invention relates to a purification method of a tembotrions product. The method comprises the following steps: 1) dissolving the tembotrions product in an aqueous solution, and heating; 2) addingan adsorbent, and carrying out heat preservation and hot filtration; and 3) controlling the temperature, adjusting the pH value of the aqueous solution to be less than 3, cooling, and crystallizing purified tembotrions from the solution. According to the purification method of the sulfadione product, the content of cyanide impurities in the sulfadione product can be greatly reduced, the purity ofthe product is improved, and the content of the cyanide impurities is reduced from 1327 ppm to 100 ppm or below by performing Ames detection on the tembotrions product before purification and the purified product.

Description

technical field [0001] The invention relates to the field of pesticide synthesis, in particular to a method for reducing the level of impurities in tembotrione products. Background technique [0002] Tembotrione is a triketone p-hydroxyphenylpyruvate dioxygenase (HPPD) inhibitory herbicide. HPPD inhibitory herbicides have high activity, low residue, safety to mammals and environmental friendliness. Features, become the hottest product in the corn herbicide market. Teratrione has a wide weeding spectrum and a long suitable period for weeding. The main targets are: various broad-leaved weeds and gramineous weeds in the middle and late stages of cornfields after budding, against thistles, field bindweed, mother-in-law, capsicum, and ferret petals. It is one of the most important herbicides used in American cornfields because of its excellent control effect on flower and pigtail, and has no phytotoxicity to subsequent crops. [0003] CAS number: 335104-84-2 [0004] Molecular...

Claims

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Application Information

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IPC IPC(8): C07C317/24C07C315/06
CPCC07C315/06C07C2601/14C07C317/24
Inventor 李林虎许辉石卫李新生孙敬权许宜伟孙丽梅白光钱敏
Owner 利民化学有限责任公司