Aryloxyphenoxy propionate compound as well as preparation method and application thereof

A technology of aryloxyphenoxy propionate and compound, which is applied in the preparation of organic compounds, botanical equipment and methods, and preparation of carboxylic acid nitriles to achieve excellent control activity

Pending Publication Date: 2022-04-05
XIAN MODERN CHEM RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] After a period of use of existing herbicides, weeds will develop resistance, so new and more effective herbicidal compounds and compositions need to be continuously invented

Method used

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  • Aryloxyphenoxy propionate compound as well as preparation method and application thereof
  • Aryloxyphenoxy propionate compound as well as preparation method and application thereof
  • Aryloxyphenoxy propionate compound as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] Add 12.12g (0.12mol) of triethylamine, 100ml of toluene and 12.5g (0.1mol) of N-methyl-o-fluoroaniline into a four-necked reaction flask, raise the temperature to 60°C, and slowly add 38.4g (0.12mol) of acid chloride, Mixed solution with 50ml of toluene, about 1 ~ 2h to complete the dropwise addition. After the dropwise addition, the mixture was incubated for 6 hours and the content of N-methyl-o-fluoroaniline was less than 1% by liquid phase detection. Toluene was removed under reduced pressure, and water was added to cool and filter to obtain compound 1-1-a-1.

Embodiment 2

[0049] Add 15.9g (0.12mol) of sodium carbonate, 100ml of toluene, and 12.5g (0.1mol) of N-methyl-o-fluoroaniline into a four-necked reaction flask, raise the temperature to 60°C, and slowly add 38.4g (0.12mol) of acid chloride, and The mixed solution of 50ml toluene was added dropwise in about 1-2 hours. After the dropwise addition, the mixture was incubated for 6 hours, and the content of N-methyl-o-fluoroaniline was detected by the liquid phase to be less than 1%, the toluene was removed under reduced pressure, and the compound 1-1-a-2 was obtained by cooling and filtering by adding water.

Embodiment 3

[0051] The difference between this example and Example 1 is that the solvent used in the example is ethylene dichloride.

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PUM

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Abstract

The invention discloses an aryloxy phenoxy propionate compound as well as a preparation method and application thereof, the aryloxy phenoxy propionate compound is shown in the specification, and in the formula, R1 is methyl, ethyl or isopropyl; r2 is fluorine, chlorine, difluoromethyl or trifluoromethyl. The aryloxy phenoxy propionate compound provided by the invention has excellent prevention and control activity on weeds, can be used as an active ingredient of a herbicide, can prevent and remove grassy weeds such as barnyard grass and moleplant seeds in a paddy field, and is safe to paddy rice.

Description

technical field [0001] The invention belongs to the field of pesticide herbicides, and specifically relates to an aryloxyphenoxypropionate compound, a preparation method and an application. Background technique [0002] After the existing herbicides are used for a period of time, weeds will develop resistance, so it is necessary to continuously invent new and more efficient herbicidal compounds and compositions. Simultaneously, along with people's growing demand for agricultural products and increasing emphasis on environmental protection, a highly efficient, low-toxic, environmentally friendly herbicide is also needed. [0003] Aryloxyphenoxypropionate herbicides play a very important role in the research and development of pesticides, and many of them have been used as pesticides. Patent US200300969706 discloses the synthesis and application of fenpyramid, and patent WO2009055278 Disclosed is the synthesis and application of cyhalofop-methyl. Contents of the invention ...

Claims

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Application Information

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IPC IPC(8): C07C255/54C07C253/30A01N37/40A01P13/00
Inventor 王列平郑晓蕊黄晓瑛王威刘康云张媛媛
Owner XIAN MODERN CHEM RES INST
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