2-pyrimindinyloxy (pyrimindinylthio) benzoxy enoates compound and application thereof

A technology of benzoic acid alkenoate and compound, which is applied in the field of 2-pyrimidinyloxybenzoic acid alkenoate compounds, and can solve the problem of not involving 2-pyrimidinoxy (thio) benzoic acid alkenoate. Compounds, etc.

Active Publication Date: 2008-10-08
SHENYANG SINOCHEM AGROCHEMICALS R&D CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The prior art does not relate to the preparation and application of 2-pyrimidin...

Method used

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  • 2-pyrimindinyloxy (pyrimindinylthio) benzoxy enoates compound and application thereof
  • 2-pyrimindinyloxy (pyrimindinylthio) benzoxy enoates compound and application thereof
  • 2-pyrimindinyloxy (pyrimindinylthio) benzoxy enoates compound and application thereof

Examples

Experimental program
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Synthetic example

[0077] Synthesis of Compound 4:

[0078] 1.

[0079]

[0080] Add 7 grams (0.036 moles) of 4,6-dimethoxy-2-methylsulfonylpyrimidine, 6 milliliters (0.047 moles) of methyl salicylate, and 6 grams (0.043 moles) of potassium carbonate in a 250 milliliter round bottom flask , N, N-dimethylformamide 100 ml. After stirring the reaction at 110-130°C for 4 hours, it was cooled to room temperature. 200 ml of ethyl acetate and 180 ml of water were added to the reaction solution, followed by extraction. The organic phase was washed successively with 50 milliliters of 1% dilute hydrochloric acid, 50 milliliters of saturated sodium bicarbonate, 3 × 50 milliliters of saturated aqueous sodium chloride, dried over anhydrous magnesium sulfate, and the residue obtained after precipitation was subjected to silica gel column chromatography (petroleum ether / ethyl acetate=5 / 1) to obtain 8.35 g of methyl 2-(4,6-dimethoxy-2-pyrimidinyloxy)benzoate.

[0081] 2.

[0082]

[0083]Add 2.93 gr...

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Abstract

The invention discloses 2-pyridine-oxyl(sulfide) benzoyloxy enoates compound with general formula(I, II); wherein X is H or S; R1 is H, halogen, or 4,6- dimethoxy pyrimidine-2- radicel or one of the following groups; methyls on N-O bonds and double bonds are in maleinoid form or anti form; R2,R3,R4,R6,R7 are selected from H or alkyl from C1-C6; R5 is alkyl from C1-C6, alcoxyl-alkyl from C2-C6, alkenyl from C3-C6 or alkynyl from C3-C6; radicals of R6 and R7 are in maleinoid form or anti form; R8 is alkyl from C1-C6, alkenyl from C3-C6 or alkynyl from C3-C6. The compound (I, II)is of activity in weeding and is safe to crops like soybean, cotton, earthnut, cole, corn, etc.

Description

technical field [0001] The invention belongs to the field of herbicides, and in particular relates to a 2-pyrimidinyloxy (thio) benzoyl enoate compound and an application thereof. Background technique [0002] Due to the succession and change of weed populations and the emergence and rapid development of resistance to chemical pesticides, people's awareness of ecological environment protection has been continuously strengthened. The emphasis on the issue of whereabouts continues to increase. With the gradual reduction of the world's arable land, the continuous growth of the population and the increase in the demand for food, people are forced to rapidly develop agricultural production technology, improve and improve the farming system, and need to continuously invent new and improved herbicidal compounds and compositions. [0003] EP223406 reported that certain 2-pyrimidinyloxy (thio) benzoate compounds have herbicidal activity and are safe to peanuts and sunflowers. CN174...

Claims

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Application Information

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IPC IPC(8): C07D239/60A01N43/54A01P13/00
Inventor 李斌冀海英崔东亮白丽萍张弘
Owner SHENYANG SINOCHEM AGROCHEMICALS R&D CO LTD
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