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Aroxyphenoxy carboxylic acid ester compounds with herbicidal activity

A technology for aryloxyphenoxycarboxylic acids and ester compounds, which is applied in the directions of organic chemistry, animal repellents, plant growth regulators, etc., can solve the problems of undisclosed biscarboxyl ester compounds and the like

Inactive Publication Date: 2006-03-08
中国中化股份有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Certain aryloxyphenoxycarboxylate compounds have been reported as herbicides, see USP4,441,913, but the dicarboxylate compounds as shown in the present invention have not been disclosed

Method used

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  • Aroxyphenoxy carboxylic acid ester compounds with herbicidal activity
  • Aroxyphenoxy carboxylic acid ester compounds with herbicidal activity
  • Aroxyphenoxy carboxylic acid ester compounds with herbicidal activity

Examples

Experimental program
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Synthetic example

[0091] Synthesis of Compound 1 in Table 1:

[0092]

[0093] Add raw material a (30.0 g, 0.092 mol) and 150 ml of dichloromethane into a 250 ml reaction flask, stir, add oxalyl chloride (14.0 g, 0.110 mol), 3 drops of DMF, stir at room temperature for 4 hours, and concentrate to obtain 32 g of yellow liquid b1.

[0094]

[0095] Add ethylene glycol (31.0 grams, 0.50mol) in the reaction flask of 250ml, triethylamine (6.1 grams, 0.06mol), in the 100ml dichloromethane solution, add dropwise b1 (17.3 grams, 0.05mol) and The mixed solution of 50ml of dichloromethane was added in about half an hour and reacted at room temperature for 5 hours. Pour the mixed solution into a 1000ml separating funnel, add 200ml ethyl acetate and 200ml water, and separate the liquids. The ethyl acetate layer is washed with 200ml saturated aqueous sodium bicarbonate solution and 200ml saturated aqueous sodium chloride solution, dried over anhydrous magnesium sulfate, and concentrated , separated ...

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Abstract

An aryloxyphenyloxy carboxylate compound with herbiciding activity and its composition can be used to effectively prevent and eliminate multiple mono-and di-cotyledonous weeds.

Description

technical field [0001] The present invention belongs to the field of herbicides. Background technique [0002] Because weeds develop resistance to herbicides or compositions thereof over time, there is a continuing need to invent new and improved herbicidal compounds and compositions. In addition, considering economical and environmental factors, it is also necessary to invent herbicides with different mechanisms of action from existing herbicides. [0003] Some aryloxyphenoxycarboxylate compounds have been reported as herbicides, see USP4,441,913, but the dicarboxylate compounds shown in the present invention have not been disclosed. Contents of the invention [0004] The invention provides an aryloxyphenoxycarboxylate compound with a novel structure. [0005] As shown in general formula (I): [0006] [0007] in: [0008] n=1-8; [0009] R 1 selected from H or (C 1 -C 4 )alkyl; [0010] Q is selected from one of the groups shown below: [0011] [001...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07C69/003C07D241/42A01N37/10A01N43/60
Inventor 李斌刘振龙马宏娟罗艳梅相东张宗俭徐龙鹤
Owner 中国中化股份有限公司