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Dibenzocyclooctane carboxylic ether compounds with herbicidal activity

A technology of ester compounds and cyclooctane, which is applied in the directions of organic chemistry, animal repellent, plant growth regulator, etc., can solve the problems of unpublished bicarboxy ester compounds and so on.

Inactive Publication Date: 2004-12-08
中国中化股份有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

But the dicarboxylate compound as shown in the present invention is not disclosed

Method used

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  • Dibenzocyclooctane carboxylic ether compounds with herbicidal activity
  • Dibenzocyclooctane carboxylic ether compounds with herbicidal activity
  • Dibenzocyclooctane carboxylic ether compounds with herbicidal activity

Examples

Experimental program
Comparison scheme
Effect test

Synthetic example

[0124] Synthesis of Compound 9 in Table 1:

[0125]

[0126] Drop into II (7.5 grams, 0.0335mol), dichloromethane (70ml), oxalyl chloride (6.4 grams, 0.0503mol) in the reaction bottle of 150ml, absorb tail gas with lye, react at room temperature for 30 minutes, add 2 drops of DMF, and A large amount of gas was released, and the reaction was stopped after 2 hours. The reaction liquid was concentrated under reduced pressure to obtain 5.6 g of oily substance II-1.

[0127]

[0128] Add II-1 (1.0 grams, 0.00365mol) and 10ml of dichloromethane in a 50ml reaction flask, add ethylene glycol (2.2 grams, 0.0365mol) after stirring, triethylamine (0.44 grams, 0.00365mol), room temperature React for 2 hours. Pour the reaction solution into a 250ml separatory funnel, add 100ml ethyl acetate, 50ml water, separate layers, wash the ethyl acetate layer with 50ml saturated aqueous sodium bicarbonate solution, 50ml saturated aqueous sodium chloride solution, and dry over anhydrous magnesi...

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Abstract

A dibenzocyclooctalkyl carboxylate compound with herbiciding activity and its composition can be used to effectively control the 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] Certain dibenzo-1,3-dioxa-cyclooctane-2-carboxylate compounds have been used as medicine (J.Medicinal Chemistry, 15,1273-1278 (1972)), herbicide (USP 4938790) There are reports. But the dicarboxylate ester compound as shown in the present invention has not been disclosed. Contents of the invention [0004] The invention provides a novel dibenzo-1,3-dioxa-cyclooctane-2-carboxylate compound. [0005] As shown in general formula (I): [0006] [0007] in: [0008] n=1-8; [0009] R is selected from (C 1 -C 4 ) ...

Claims

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Application Information

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IPC IPC(8): A01N43/30C07D313/20
Inventor 李斌相东马宏娟张宗俭刘振龙王世辉徐龙鹤
Owner 中国中化股份有限公司
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