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Cyclohexanedione-benzothiadiazine compound and application thereof

A compound, nitrogen oxide technology, applied in application, biocide, organic chemistry, etc., can solve the problems of insufficient herbicidal effect, no weed plants, narrow weed plant spectrum, etc., to achieve good control effect and crop safety. , the effect of drug effect is fast

Pending Publication Date: 2022-03-11
DONGGUAN HEC PESTICIDES R&D CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The active ingredients known from the documents cited above have disadvantages in use such as (a) no or only insufficient herbicidal action on weed plants, (b) excessive spectrum of weed plants to be controlled. Narrow or (c) too low selectivity in useful plant crops

Method used

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  • Cyclohexanedione-benzothiadiazine compound and application thereof
  • Cyclohexanedione-benzothiadiazine compound and application thereof
  • Cyclohexanedione-benzothiadiazine compound and application thereof

Examples

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Embodiment 1

[0151] Example 1: Compound 3-(2,6-dimethylphenyl)-6-(2-hydroxyl-6-oxocyclohex-1-enecarbonyl)-1-methyl-1H-benzo[c Synthesis of ][1,2,6]thiadiazin-4(3H)-one 2,2-dioxide

[0152]

[0153] Step 1: Synthesis of intermediate 4-nitroisophthalic acid

[0154]

[0155] Potassium hydroxide (12.39g, 662mmoL), water (400mL) and 2-nitro-5-methylbenzoic acid (40g, 220mmoL) were added to a 1-liter reaction flask, and heated to 90°C. After the solid was completely dissolved, Add potassium permanganate (104.69g, 662mmoL) in batches, react at 90°C for 3 hours, stop heating, filter the system while it is hot, rinse the filter residue with water (50mL×2), and adjust the pH to 1 after the mother liquor drops to room temperature , and then stirred at 0° C. for 30 minutes, filtered, and dried the solid to obtain 43 g of a white solid with a yield of 92%.

[0156] MS(ES-API,pos.ion)m / z:209.9[M-H] - .

[0157] Step 2: Synthesis of intermediate dimethyl 4-nitroisophthalate

[0158]

[015...

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Abstract

The invention provides a cyclohexanedione-benzothiadiazine compound and an application of the cyclohexanedione-benzothiadiazine compound. Specifically, the invention provides a compound as shown in a formula (I) or a stereoisomer, a tautomer, a nitrogen oxide or a salt thereof of the compound as shown in the formula (I), a preparation method, a composition containing the compounds and application of the composition in agriculture, especially application of the composition as an active ingredient of a herbicide for preventing and treating unwanted plants, wherein A, R1, R2, R3, R4, R5, R6, R7, R8 and Q have the meanings as described in the invention.

Description

technical field [0001] The invention provides a novel cyclohexanedione-benzothiadiazine compound and its preparation method; a composition containing these compounds and its application in agriculture. Background technique [0002] Cyclohexanedione compounds are a class of compounds with excellent biological activity, and their herbicidal activity has been reported, for example, in WO2015058519 and so on. However, the compounds of the present invention described in detail hereinafter are not described in these documents. [0003] The active ingredients known from the documents cited above have disadvantages in use such as (a) no or only insufficient herbicidal action on weed plants, (b) excessive spectrum of weed plants to be controlled. Narrow or (c) too low selectivity in useful plant crops. [0004] Accordingly, there is a need for a continued supply of chemically active ingredients that can be advantageously used as herbicides. Contents of the invention [0005] The...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07D285/16A01N43/88A01P13/00
CPCC07D285/16A01N43/88
Inventor 李义涛林健康维明池伟林陈俊禧刘庆容
Owner DONGGUAN HEC PESTICIDES R&D CO LTD
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