WO2011065451A1 - Ketone compound and herbicide containing same - Google Patents

Ketone compound and herbicide containing same Download PDF

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Publication number
WO2011065451A1
WO2011065451A1 PCT/JP2010/071070 JP2010071070W WO2011065451A1 WO 2011065451 A1 WO2011065451 A1 WO 2011065451A1 JP 2010071070 W JP2010071070 W JP 2010071070W WO 2011065451 A1 WO2011065451 A1 WO 2011065451A1
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Prior art keywords
compound
formula
present
weeds
chloro
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PCT/JP2010/071070
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French (fr)
Japanese (ja)
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雅人 高延
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住友化学株式会社
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    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07DHETEROCYCLIC COMPOUNDS
    • C07D333/00Heterocyclic compounds containing five-membered rings having one sulfur atom as the only ring hetero atom
    • C07D333/50Heterocyclic compounds containing five-membered rings having one sulfur atom as the only ring hetero atom condensed with carbocyclic rings or ring systems
    • C07D333/52Benzo[b]thiophenes; Hydrogenated benzo[b]thiophenes
    • AHUMAN NECESSITIES
    • A01AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01NPRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
    • A01N43/00Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds
    • A01N43/02Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having rings with one or more oxygen or sulfur atoms as the only ring hetero atoms
    • A01N43/04Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having rings with one or more oxygen or sulfur atoms as the only ring hetero atoms with one hetero atom
    • A01N43/06Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having rings with one or more oxygen or sulfur atoms as the only ring hetero atoms with one hetero atom five-membered rings
    • A01N43/12Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having rings with one or more oxygen or sulfur atoms as the only ring hetero atoms with one hetero atom five-membered rings condensed with a carbocyclic ring

Definitions

  • the present invention relates to a ketone compound and a herbicide containing the same.
  • An object of the present invention is to provide a compound having an excellent weed control effect.
  • the present inventor has found that the ketone compound represented by the formula (I) has a weed control effect, and has led to the present invention.
  • the present invention is as follows. [1] Formula (I) A ketone compound represented by the following (hereinafter referred to as the present compound). [2] Formula (II) The method for producing a ketone compound according to [1], which comprises a step of reacting the compound represented by the formula with metachloroperbenzoic acid. [3] A herbicide containing the ketone compound according to [1] and an inert carrier.
  • [4] A method for controlling weeds, wherein an effective amount of the ketone compound according to [1] is applied to weeds, soil in which weeds grow, or soil in which weeds will grow in the future.
  • [5] Use of the ketone compound according to [1] for controlling weeds.
  • [6] Formula (II) A compound represented by [7] Formula (III): A compound of formula (IV): [Wherein, X represents a halogen atom. ]
  • the compound of the present invention has a weed control effect, it is useful as an active ingredient of a herbicide.
  • the compound of the present invention can be produced, for example, by the following production method.
  • (Production method 1) Formula (I): The compound of the present invention represented by the formula (II): It can manufacture by making the compound shown by and a metachloro perbenzoic acid react. The reaction is usually performed in a solvent. Examples of the solvent used for the reaction include halogenated hydrocarbons such as chloroform. The amount of metachloroperbenzoic acid used in the reaction is usually 2 to 4 moles per mole of the compound represented by the formula (II).
  • the reaction temperature is usually in the range of ⁇ 20 to 40 ° C.
  • the reaction time is usually in the range of 1 to 10 hours.
  • the compound of the present invention can be isolated by performing post-treatment operations such as pouring the reaction mixture into water and extracting the mixture with an organic solvent, and then drying and concentrating the organic layer.
  • the isolated compound of the present invention can be further purified by recrystallization, column chromatography or the like.
  • (Production method 2) Formula (II): The compound represented by the formula (III): A compound of formula (IV): [Wherein, X represents a halogen atom such as chlorine or bromine. ] It can manufacture by making it react with the compound shown by Lewis acid presence. The reaction is usually performed in a solvent. Examples of the Lewis acid used in the reaction include aluminum chloride.
  • the solvent used for the reaction examples include halogenated hydrocarbons such as chloroform.
  • the amount of the reagent used in the reaction is usually 1 to 2 mol of the compound represented by formula (IV) and 1 to 2 mol of Lewis acid based on 1 mol of the compound represented by formula (III). Is the ratio.
  • the reaction temperature is usually in the range of ⁇ 20 to 40 ° C.
  • the reaction time is usually in the range of 1 to 10 hours.
  • the compound represented by the formula (II) is isolated by performing post-treatment operations such as pouring the reaction mixture into water, extracting with an organic solvent, and then drying and concentrating the organic layer. can do.
  • the isolated compound represented by the formula (II) can be used in the next step without purification.
  • Formula (III) The compound represented by the formula (V): It can manufacture by making the compound and sulfide salt shown by react.
  • the reaction is usually performed in a solvent.
  • the solvent used for the reaction include aprotic polar compounds such as 1-methyl-2-pyrrolidone.
  • Examples of the sulfide salt used in the reaction include sodium sulfide nonahydrate.
  • the amount of the sulfide salt used in the reaction is usually 1 to 4 moles per mole of the compound represented by the formula (V).
  • the reaction temperature of the reaction is usually in the range of 0 to 180 ° C.
  • the reaction time is usually in the range of 1 to 20 hours.
  • the compound represented by the formula (III) is isolated by performing post-treatment operations such as pouring the reaction mixture into water, extracting with an organic solvent, and then drying and concentrating the organic layer. can do.
  • the isolated compound represented by the formula (III) can be further purified by column chromatography or the like.
  • the isolated compound represented by the formula (III) can be used in the next step without purification.
  • (Reference production method 2) Formula (V): The compound represented by the formula (VI): It can manufacture by making the compound shown by p-toluenesulfonyl chloride react. The reaction is usually performed in a basic solvent such as pyridine.
  • the amount of paratoluenesulfonyl chloride used in the reaction is usually 1 to 4 moles per mole of the compound represented by the formula (VI).
  • the reaction temperature is usually in the range of -10 to 50 ° C.
  • the reaction time is usually in the range of 1 to 10 hours.
  • the compound represented by the formula (V) is isolated by performing post-treatment operations such as pouring the reaction mixture into water, extracting with an organic solvent, and then drying and concentrating the organic layer. can do.
  • the isolated compound represented by the formula (V) can be further purified by column chromatography or the like.
  • the isolated compound represented by the formula (V) can be used in the next step without purification.
  • the compound represented by the formula (VI) is described in, for example, Journal of Medicinal Chemistry (2007) Vol. 50, (No. 12), P2818-2841.
  • the compound of the present invention has an excellent weed control effect and can be used as an active ingredient of a herbicide.
  • weeds for which the compound of the present invention is effective include paddy field weeds such as Tainubie, Inu firefly, Azena, Urikawa and the like.
  • the herbicide of the present invention contains the compound of the present invention and an inert carrier.
  • Examples of the inert carrier contained in the herbicide of the present invention include a liquid carrier and a solid carrier.
  • the herbicide of the present invention usually contains 0.01 to 90% by weight of the compound of the present invention.
  • the liquid carrier include water, alcohols (for example, methanol, ethanol, 1-propanol, 2-propanol, and ethylene glycol), ketones (for example, acetone and methyl ethyl ketone), ethers (for example, dioxane, tetrahydrofuran).
  • Solid carriers include vegetable powders (eg, soybean powder, tobacco powder, wheat flour, and wood powder), mineral powders (eg, clays such as kaolin, bentonite, acid clay, clay; talc powder, wax stone powder, etc. Talc; silica such as diatomaceous earth and mica powder), alumina, sulfur powder, activated carbon, saccharides (for example, lactose and glucose), inorganic salts (for example, calcium carbonate and sodium bicarbonate), and glass hollow bodies Can be mentioned.
  • the liquid carrier or solid carrier is contained in the herbicide of the present invention in a proportion of usually 1 to 99% by weight, preferably about 10 to 99% by weight, based on the total amount.
  • Surfactants are usually used as emulsifiers, dispersants, spreaders, penetrants, wetting agents and the like used in the formulation.
  • examples of such surfactants include negative alkyl sulfate salts, alkyl aryl sulfonates, dialkyl sulfosuccinates, polyoxyethylene alkyl aryl ether phosphate esters, lignin sulfonates, naphthalene sulfonate formaldehyde polycondensates, and the like.
  • binder and thickener examples include, for example, dextrin, sodium salt of carboxymethyl cellulose, polycarboxylic acid polymer compound, polyvinyl pyrrolidone, polyvinyl alcohol, sodium lignin sulfonate, calcium lignin sulfonate, sodium polyacrylate, gum arabic, Examples include sodium alginate, mannitol, sorbitol, bentonite mineral, polyacrylic acid and its derivatives, sodium salt of carboxymethyl cellulose, white carbon, and natural sugar derivatives (eg, xanthan gum, guar gum, etc.).
  • the content ratio of the compound of the present invention in the preparation is, for example, as follows. 1.
  • Emulsions, wettable powders, granular wettable powders, liquids, aqueous solvents, flowables, tablets, and dry flowables Usually in a proportion of 1 to 90% by weight. 2. For oils and powders: usually 0.01 to 10% by weight. 3. Granules and jumbo agents: Usually 0.05 to 25% by weight. Emulsions, wettable powders, granular wettable powders, liquids, aqueous solvents, flowables and the like are usually used after being diluted about 100 to 100,000 times with water or the like.
  • the weed control method of the present invention is carried out by applying an effective amount of the compound of the present invention to weeds, soils on which weeds grow, or soils on which weeds will grow in the future.
  • the method for controlling weeds of the present invention is usually carried out by applying the preparation of the compound of the present invention to weeds, soils where weeds will grow, or soils where weeds will grow in the future.
  • the application method when using the compound of the present invention for controlling weeds the same methods as those for applying known ordinary agricultural chemicals are used. Examples of such application methods include soil treatment and foliage treatment.
  • the application amount of the compound of the present invention is usually 1 to 5000 g per 10,000 m 2 of application site.
  • the compound of the present invention can be used for controlling weeds in paddy fields.
  • the amount of the compound of the present invention is usually 1 to 5000 g per 10,000 m 2 of paddy field.
  • the herbicide of the present invention is usually applied before or after emergence of weeds for paddy field weed control.
  • the compound of the present invention is formulated into an emulsion, wettable powder, granule wettable powder, aqueous solvent, flowable agent, dry flowable agent, etc., the water is added so that the concentration of the compound of the present invention becomes 0.1 to 1000 ppm. It is applied by spraying after dilution.
  • the formulation is usually applied as it is.
  • the herbicide of the present invention may be applied and / or mixed simultaneously with one or more other herbicides, plant growth regulators, fungicides, insecticides, acaricides, nematicides and the like as necessary. Can be applied. .
  • a phenoxy fatty acid herbicidal compound for example, (1) a phenoxy fatty acid herbicidal compound, (2) benzoic acid herbicidal compound, (3) urea herbicidal compound, (4) a triazine herbicidal compound, (5) bipyridinium herbicidal compound, (6) hydroxybenzonitrile herbicidal compound, (7) dinitroaniline herbicidal compound, (8) an organophosphorus herbicidal compound, (9) carbamate herbicidal compounds, (10) an acid amide herbicidal compound, (11) a chloroacetanilide herbicidal compound, (12) diphenyl ether herbicidal compound, (13) a cyclic imide herbicidal compound, (14) a pyrazole herbicidal compound, (15) a triketone herbicidal compound, (16) Aryloxyphenoxypropionic acid herbicidal compound, (17) a trione oxime herbicidal compound, (18) a sulf
  • a disinfectant for example, (1) a polyhaloalkylthio fungicidal compound, (2) organophosphorus fungicidal compound, (3) benzimidazole bactericidal compound, (4) Carboxamide fungicidal compound, (6) acylalanine bactericidal compound, (7) azole fungicidal compound, (8) Morpholine bactericidal compound, (9) strobilurin bactericidal compound, (10) Antibiotics, and (11) Dithiocarbamate bactericidal compounds.
  • a polyhaloalkylthio fungicidal compound for example, (1) a polyhaloalkylthio fungicidal compound, (2) organophosphorus fungicidal compound, (3) benzimidazole bactericidal compound, (4) Carboxamide fungicidal compound, (6) acylalanine bactericidal compound, (7) azole fungicidal compound, (8) Morpholine bactericidal compound, (9)
  • an active ingredient of such an insecticide for example, (1) organophosphorus insecticidal compound, (2) carbamate insecticidal compounds, (3) pyrethroid insecticidal compound, (4) nereistoxin insecticidal compound, (5) Neonicotinoid insecticidal compound, (6) Benzoylphenylurea insecticidal compound, and (7) Macrolide insecticidal compound.
  • the herbicide of the present invention may be mixed with pigments, fertilizers (for example, urea and the like) and the like.
  • the compound of the present invention can control weeds in farmland where crops such as rice are grown.
  • Production Example 1 Synthesis of 5-benzoyl-4-chloro-2,3-dihydrobenzo [b] thiophene-1,1-dioxide 1.00 g of 4-chloro-2,3-dihydrobenzo [b] thiophene and 1.20 g of aluminum chloride were added to 10 ml of chloroform. To this mixture, 1.0 ml of benzoyl chloride was added dropwise under ice cooling. The mixture was stirred for 2 hours under ice cooling.
  • Formulation Example 2 Compound of the present invention 1.5% by weight 2% by weight sodium lignin sulfonate Talc 40% by weight Bentonite 56.5% by weight Are mixed and kneaded and granulated to obtain granules.
  • Test example 1 A plastic pot ( ⁇ 9 cm ⁇ 10 cm) was filled with soil, water was added, and the mixture was left standing for 3 days. The pot was mixed with soil mixed with Azena seeds uniformly and left in a greenhouse (20-25 ° C.) for 6 days. Water was added to the pot to a depth of 3 cm.
  • the compound of the present invention showed efficacy 8 at a treatment dose of 4000 g / ha.
  • the compound of the present invention has a weed control effect. Weeds can be controlled by applying an effective amount of the compound of the present invention to weeds, soils where weeds will grow, or soils where weeds will grow in the future.

Abstract

Disclosed is a ketone compound which is represented by formula (I) and has a weed control effect. Weeds can be controlled by applying an effective amount of the compound to weeds, the soil where weeds grow or the soil where weeds will grow. Also disclosed are: a method for producing a ketone compound which is represented by formula (I); and a production intermediate of a ketone compound which is represented by formula (I).

Description

ケトン化合物及びそれを含有する除草剤Ketone compounds and herbicides containing the same
 本発明は、ケトン化合物及びそれを含有する除草剤に関する。 The present invention relates to a ketone compound and a herbicide containing the same.
 除草剤の有効成分となる化合物の開発が広く進められ、雑草防除効力を有する化合物が見出されている。例えば、The Pesticide Manual Thirteenth Edidionには多くの除草剤の有効成分となる化合物が紹介されている。 The development of compounds that serve as active ingredients of herbicides has been widely promoted, and compounds having a weed control effect have been found. For example, The Pesticide Manual Thirtainent Edition introduces compounds that are active ingredients of many herbicides.
 本発明は優れた雑草防除効力を有する化合物を提供することを課題とする。
 本発明者は、式(I)で表されるケトン化合物が雑草防除効力を有することを見出し、本発明に至った。
 本発明は以下のものである。
[1]  式(I)
Figure JPOXMLDOC01-appb-I000006
で示されるケトン化合物(以下、本発明化合物と記す。)。
[2]  式(II)
Figure JPOXMLDOC01-appb-I000007
で示される化合物とメタクロロ過安息香酸とを反応させる工程を有する[1]記載のケトン化合物の製造方法。
[3]  [1]記載のケトン化合物と不活性担体とを含有する除草剤。
[4]  [1]記載のケトン化合物の有効量を雑草、雑草が生育する土壌、又は雑草が将来生育するであろう土壌に施用する雑草の防除方法。
[5]  雑草防除のための[1]記載のケトン化合物の使用。
[6]  式(II)
Figure JPOXMLDOC01-appb-I000008
で示される化合物。
[7]  式(III):
Figure JPOXMLDOC01-appb-I000009
で示される化合物と、式(IV):
Figure JPOXMLDOC01-appb-I000010
〔式中、Xはハロゲン原子を表す。〕
で示される化合物とをルイス酸存在下で反応させる工程を有する[6]記載の化合物の製造方法。
[8] ルイス酸が塩化アルミニウムである[7]記載の製造方法。
 本発明化合物は、雑草防除効力を有することから、除草剤の有効成分として有用である。
 本発明化合物は例えば以下の製造法により製造することができる。
(製造法1)
 式(I):
Figure JPOXMLDOC01-appb-I000011
で示される本発明化合物は、式(II):
Figure JPOXMLDOC01-appb-I000012
で示される化合物とメタクロロ過安息香酸とを反応させることにより製造することができる。
 該反応は通常溶媒中で行われる。
 反応に用いられる溶媒としては、例えば、クロロホルム等のハロゲン化炭化水素が挙げられる。
 反応に用いられるメタクロロ過安息香酸の量は、式(II)で示される化合物1モルに対して、通常2~4モルの割合である。
 該反応の反応温度は、通常−20~40℃の範囲である。該反応の反応時間は、通常1~10時間の範囲である。
 反応終了後は、例えば、反応混合物を水に注加し、有機溶媒抽出した後、有機層を乾燥、濃縮する等の後処理操作を行うことにより、本発明化合物を単離することができる。単離された本発明化合物は、再結晶、カラムクロマトグラフィー等によりさらに精製することもできる。
(製造法2)
 式(II):
Figure JPOXMLDOC01-appb-I000013
で示される化合物は、式(III):
Figure JPOXMLDOC01-appb-I000014
で示される化合物と、式(IV):
Figure JPOXMLDOC01-appb-I000015
〔式中、Xは、塩素、臭素等のハロゲン原子を表す。〕
で示される化合物とをルイス酸存在下で反応させることにより製造することができる。
 該反応は、通常、溶媒中で行われる。
 反応に用いられるルイス酸としては、例えば塩化アルミニウムが挙げられる。
 反応に用いられる溶媒としては、クロロホルム等のハロゲン化炭化水素が挙げられる。
 反応に用いられる試剤の量は、式(III)で示される化合物1モルに対して、式(IV)で示される化合物が通常1~2モルの割合であり、ルイス酸が通常1~2モルの割合である。
 該反応の反応温度は、通常−20~40℃の範囲である。該反応の反応時間は、通常1~10時間の範囲である。
 反応終了後は、例えば、反応混合物を水に注加し、有機溶媒抽出した後、有機層を乾燥、濃縮する等の後処理操作を行うことにより、式(II)で示される化合物を単離することができる。単離された式(II)で示される化合物は、精製することなく、次工程に使用することができる。
(参考製造法1)
 式(III):
Figure JPOXMLDOC01-appb-I000016
で示される化合物は、式(V):
Figure JPOXMLDOC01-appb-I000017
で示される化合物と硫化物塩とを反応させることにより製造することができる。
 該反応は、通常、溶媒中で行われる。
 反応に用いられる溶媒としては、例えば、1−メチル−2−ピロリドン等の非プロトン性極性化合物が挙げられる。
 該反応に用いられる硫化物塩としては、例えば、硫化ナトリウム9水和物が挙げられる。
 反応に用いられる硫化物塩の量は、式(V)で示される化合物1モルに対して、通常1~4モルの割合である。
 該反応の反応温度は通常0~180℃の範囲である。該反応の反応時間は通常1~20時間の範囲である。
 反応終了後は、例えば、反応混合物を水に注加し、有機溶媒抽出した後、有機層を乾燥、濃縮する等の後処理操作を行うことにより、式(III)で示される化合物を単離することができる。単離された式(III)で示される化合物は、カラムクロマトグラフィー等によりさらに精製することができる。単離された式(III)で示される化合物は、精製することなく、次工程に使用することもできる。
(参考製造法2)
 式(V):
Figure JPOXMLDOC01-appb-I000018
で示される化合物は、式(VI):
Figure JPOXMLDOC01-appb-I000019
で示される化合物とパラトルエンスルホニルクロリドとを反応させることにより製造することができる。
 該反応は、通常、ピリジン等の塩基性溶媒中で行われる。
 反応に用いられるパラトルエンスルホニルクロリドの量は、式(VI)で示される化合物1モルに対して、通常1~4モルの割合である。
 該反応の反応温度は通常−10~50℃の範囲である。該反応の反応時間は通常1~10時間の範囲である。
 反応終了後は、例えば、反応混合物を水に注加し、有機溶媒抽出した後、有機層を乾燥、濃縮する等の後処理操作を行うことにより、式(V)で示される化合物を単離することができる。単離された式(V)で示される化合物は、カラムクロマトグラフィー等によりさらに精製することができる。単離された式(V)で示される化合物は、精製することなく、次工程に使用することもできる。
 式(VI)で示される化合物は、例えば、Journal of Medicinal Chemistry(2007)Vol.50,(No.12),P2818−2841記載の方法により製造できる。
 本発明化合物は優れた雑草防除の効力を有し、除草剤の有効成分として使用することができる。本発明化合物が効力を有する雑草としては、例えば、タイヌビエ、イヌホタルイ、アゼナ、ウリカワ等の水田雑草が挙げられる。
 本発明の除草剤は本発明化合物と不活性担体とを含有する。本発明の除草剤に含有される不活性担体としては、例えば液体担体及び固体担体が挙げられる。
 本発明の除草剤は、通常、本発明化合物を適当な液体担体に溶解若しくは分散する、本発明化合物と適当な固体担体と混合する、又は本発明化合物を適当な固体担体に吸着させることによって製剤化されたものである。本発明の除草剤の製剤形態としては、例えば乳剤、液剤、油剤、水和剤、粉剤、粒剤、顆粒水和剤、水溶剤、フロアブル剤、ドライフロアブル剤、ジャンボ剤、及び錠剤が挙げられる。これらの製剤には、必要に応じて、乳化剤、分散剤、展着剤、浸透剤、湿潤剤、結合剤、増粘剤、防腐剤、酸化防止剤、着色剤等の製剤補助剤が添加されている。
 本発明の除草剤には、本発明化合物が通常0.01~90重量%含有される。
 液体担体としては、例えば、水、アルコール類(例えば、メタノール、エタノール、1−プロパノール、2−プロパノール、及びエチレングリコール)、ケトン類(例えば、アセトン、及びメチルエチルケトン)、エーテル類(例えば、ジオキサン、テトラヒドロフラン、エチレングリコールモノメチルエーテル、ジエチレングリコールモノメチルエーテル、及びプロピレングリコールモノメチルエーテル)、脂肪族炭化水素類(例えば、ヘキサン、オクタン、シクロヘキサン、灯油、燃料油、及び機械油)、芳香族炭化水素類(例えば、ベンゼン、トルエン、キシレン、ソルベントナフサ、及びメチルナフタレン)、ハロゲン化炭化水素類(例えば、ジクロロメタン、クロロホルム、及び四塩化炭素)、酸アミド類(例えば、ジメチルホルムアミド、ジメチルアセトアミド、及びN−メチルピロリドン)、エステル類(例えば、酢酸エチル、酢酸ブチル、及び脂肪酸グリセリンエステル)、及びニトリル類(例えば、アセトニトリル、及びプロピオニトリル)が挙げられる。
 固体担体としては、植物性粉末(例えば、大豆粉、タバコ粉、小麦粉、及び木粉)、鉱物性粉末(例えば、カオリン、ベントナイト、酸性白土、クレイ等のクレイ類;滑石粉、ロウ石粉等のタルク類;珪藻土、及び雲母粉等のシリカ類)、アルミナ、硫黄粉末、活性炭、糖類(例えば、乳糖、及びブドウ糖)、無機塩類(例えば、炭酸カルシウム、及び炭酸水素ナトリウム)、及びガラス中空体が挙げられる。
 液体担体又は固体担体は、本発明の除草剤にその全量に対して通常1~99重量%、好ましくは約10~99重量%の割合で含有される。
 製剤化する際に使用される乳化剤、分散剤、展着剤、浸透剤、湿潤剤等としては通常界面活性剤が用いられる。かかる界面活性剤としては、例えば、アルキル硫酸エステル塩、アルキルアリールスルホン酸塩、ジアルキルスルホコハク酸塩、ポリオキシエチレンアルキルアリールエーテルリン酸エステル塩、リグニンスルホン酸塩、ナフタレンスルホネートホルムアルデヒド重縮合物等の陰イオン系界面活性剤、及びポリオキシエチレンアルキルエーテル、ポリオキシエチレンアルキルアリールエーテル、ポリオキシエチレンアルキルポリオキシプロピレンブロックコポリマ−、ソルビタン脂肪酸エステル等の非イオン性界面活性剤が挙げられる。界面活性剤は、本発明の除草剤にその全量に対して通常0.1~50重量%、好ましくは約0.1~25重量%の割合で含有される。
 結合剤及び増粘剤としては、例えば、デキストリン、カルボキシメチルセルロースのナトリウム塩、ポリカルボン酸高分子化合物、ポリビニルピロリドン、ポリビニルアルコール、リグニンスルホン酸ナトリウム、リグニンスルホン酸カルシウム、ポリアクリル酸ナトリウム、アラビアガム、アルギン酸ナトリウム、マンニトール、ソルビトール、ベントナイト鉱物質、ポリアクリル酸とその誘導体、カルボキシメチルセルロースのナトリウム塩、ホワイトカーボン、及び天然の糖類誘導体(例えば、キサンタンガム、グアーガム等)が挙げられる。
 製剤中の本発明化合物の含有割合は、例えば以下の通りである。
1.乳剤、水和剤、顆粒水和剤、液剤、水溶剤、フロアブル剤、錠剤、ドライフロアブル剤について:通常、1~90重量%の割合。
2.油剤、粉剤について:通常、0.01~10重量%の割合。
3.粒剤、ジャンボ剤について:通常、0.05~25重量%の割合。
 乳剤、水和剤、顆粒水和剤、液剤、水溶剤、フロアブル剤等は、通常は水等で約100~100,000倍に希釈して使用される。
 本発明の雑草の防除方法は、本発明化合物の有効量を雑草、雑草が生育する土壌、又は雑草が将来生育するであろう土壌に施用することにより行われる。本発明の雑草の防除方法は、通常本発明化合物の製剤を雑草、雑草が生育する土壌、又は雑草が将来生育するであろう土壌に施用することで行われる。
 本発明化合物を雑草防除に使用する際の施用方法は、通常の公知の農薬の施用方法と同じ方法が用いられる。かかる施用方法としては、例えば土壌処理、及び茎葉処理があげられる。本発明化合物を雑草防除に使用する場合、本発明化合物の施用量は通常、施用場所10000mあたり1~5000gの割合である。
 本発明化合物は水田の雑草防除に使用することができる。本発明化合物を水田の雑草防除に使用する場合、本発明化合物の使用量は、通常は水田10000mあたり1~5000gの割合である。
 本発明の除草剤は水田雑草防除用としては通常、雑草の出芽前または出芽後に施用される。
 本発明化合物が乳剤、水和剤、顆粒水和剤、水溶剤、フロアブル剤、ドライフロアブル剤等に製剤化されている場合は、本発明化合物濃度が0.1~1000ppmになるように水で希釈した後に散布により施用される。本発明化合物が液剤、油剤、粉剤、粒剤、ジャンボ剤、錠剤等に製剤化されている場合は、該製剤は通常そのまま施用される。
 本発明の除草剤は、必要に応じて、1種以上の他の除草剤、植物生長調節剤、殺菌剤、殺虫剤、殺ダニ剤、殺線虫剤等と同時に施用及び/又は混合して施用することができる。。
 かかる他の除草剤の有効成分としては、例えば、
(1)フェノキシ脂肪酸除草性化合物、
(2)安息香酸除草性化合物、
(3)尿素除草性化合物、
(4)トリアジン除草性化合物、
(5)ビピリジニウム除草性化合物、
(6)ヒドロキシベンゾニトリル除草性化合物、
(7)ジニトロアニリン除草性化合物、
(8)有機リン除草性化合物、
(9)カーバメート除草性化合物、
(10)酸アミド除草性化合物、
(11)クロロアセトアニリド除草性化合物、
(12)ジフェニルエーテル除草性化合物、
(13)環状イミド除草性化合物、
(14)ピラゾール除草性化合物、
(15)トリケトン除草性化合物、
(16)アリールオキシフェノキシプロピオン酸除草性化合物、
(17)トリオンオキシム除草性化合物、
(18)スルホニル尿素除草性化合物、
(19)イミダゾリノン除草性化合物、及び
(21)ピリミジニルオキシ安息香酸除草性化合物
が挙げられる。
 かかる殺菌剤の有効成分としては、例えば、
(1)ポリハロアルキルチオ殺菌性化合物、
(2)有機リン殺菌性化合物、
(3)ベンズイミダゾール殺菌性化合物、
(4)カルボキシアミド殺菌性化合物、
(6)アシルアラニン殺菌性化合物、
(7)アゾール殺菌性化合物、
(8)モルフォリン殺菌性化合物、
(9)ストロビルリン殺菌性化合物、
(10)抗生物質、及び
(11)ジチオカーバメート殺菌性化合物
が挙げられる。
 かかる殺虫剤の有効成分としては、例えば、
(1)有機リン殺虫性化合物、
(2)カルバメート殺虫性化合物、
(3)ピレスロイド殺虫性化合物、
(4)ネライストキシン殺虫性化合物、
(5)ネオニコチノイド殺虫性化合物、
(6)ベンゾイルフェニル尿素殺虫性化合物、及び
(7)マクロライド殺虫性化合物
が挙げられる。
 本発明の除草剤には、色素、肥料(例えば、尿素等)等が混合されていてもよい。
 本発明化合物は、イネ等の作物が栽培されている農耕地において、雑草を防除することができる。
An object of the present invention is to provide a compound having an excellent weed control effect.
The present inventor has found that the ketone compound represented by the formula (I) has a weed control effect, and has led to the present invention.
The present invention is as follows.
[1] Formula (I)
Figure JPOXMLDOC01-appb-I000006
A ketone compound represented by the following (hereinafter referred to as the present compound).
[2] Formula (II)
Figure JPOXMLDOC01-appb-I000007
The method for producing a ketone compound according to [1], which comprises a step of reacting the compound represented by the formula with metachloroperbenzoic acid.
[3] A herbicide containing the ketone compound according to [1] and an inert carrier.
[4] A method for controlling weeds, wherein an effective amount of the ketone compound according to [1] is applied to weeds, soil in which weeds grow, or soil in which weeds will grow in the future.
[5] Use of the ketone compound according to [1] for controlling weeds.
[6] Formula (II)
Figure JPOXMLDOC01-appb-I000008
A compound represented by
[7] Formula (III):
Figure JPOXMLDOC01-appb-I000009
A compound of formula (IV):
Figure JPOXMLDOC01-appb-I000010
[Wherein, X represents a halogen atom. ]
The method for producing a compound according to [6], comprising a step of reacting the compound represented by formula (1) in the presence of a Lewis acid.
[8] The production method according to [7], wherein the Lewis acid is aluminum chloride.
Since the compound of the present invention has a weed control effect, it is useful as an active ingredient of a herbicide.
The compound of the present invention can be produced, for example, by the following production method.
(Production method 1)
Formula (I):
Figure JPOXMLDOC01-appb-I000011
The compound of the present invention represented by the formula (II):
Figure JPOXMLDOC01-appb-I000012
It can manufacture by making the compound shown by and a metachloro perbenzoic acid react.
The reaction is usually performed in a solvent.
Examples of the solvent used for the reaction include halogenated hydrocarbons such as chloroform.
The amount of metachloroperbenzoic acid used in the reaction is usually 2 to 4 moles per mole of the compound represented by the formula (II).
The reaction temperature is usually in the range of −20 to 40 ° C. The reaction time is usually in the range of 1 to 10 hours.
After completion of the reaction, for example, the compound of the present invention can be isolated by performing post-treatment operations such as pouring the reaction mixture into water and extracting the mixture with an organic solvent, and then drying and concentrating the organic layer. The isolated compound of the present invention can be further purified by recrystallization, column chromatography or the like.
(Production method 2)
Formula (II):
Figure JPOXMLDOC01-appb-I000013
The compound represented by the formula (III):
Figure JPOXMLDOC01-appb-I000014
A compound of formula (IV):
Figure JPOXMLDOC01-appb-I000015
[Wherein, X represents a halogen atom such as chlorine or bromine. ]
It can manufacture by making it react with the compound shown by Lewis acid presence.
The reaction is usually performed in a solvent.
Examples of the Lewis acid used in the reaction include aluminum chloride.
Examples of the solvent used for the reaction include halogenated hydrocarbons such as chloroform.
The amount of the reagent used in the reaction is usually 1 to 2 mol of the compound represented by formula (IV) and 1 to 2 mol of Lewis acid based on 1 mol of the compound represented by formula (III). Is the ratio.
The reaction temperature is usually in the range of −20 to 40 ° C. The reaction time is usually in the range of 1 to 10 hours.
After completion of the reaction, for example, the compound represented by the formula (II) is isolated by performing post-treatment operations such as pouring the reaction mixture into water, extracting with an organic solvent, and then drying and concentrating the organic layer. can do. The isolated compound represented by the formula (II) can be used in the next step without purification.
(Reference production method 1)
Formula (III):
Figure JPOXMLDOC01-appb-I000016
The compound represented by the formula (V):
Figure JPOXMLDOC01-appb-I000017
It can manufacture by making the compound and sulfide salt shown by react.
The reaction is usually performed in a solvent.
Examples of the solvent used for the reaction include aprotic polar compounds such as 1-methyl-2-pyrrolidone.
Examples of the sulfide salt used in the reaction include sodium sulfide nonahydrate.
The amount of the sulfide salt used in the reaction is usually 1 to 4 moles per mole of the compound represented by the formula (V).
The reaction temperature of the reaction is usually in the range of 0 to 180 ° C. The reaction time is usually in the range of 1 to 20 hours.
After completion of the reaction, for example, the compound represented by the formula (III) is isolated by performing post-treatment operations such as pouring the reaction mixture into water, extracting with an organic solvent, and then drying and concentrating the organic layer. can do. The isolated compound represented by the formula (III) can be further purified by column chromatography or the like. The isolated compound represented by the formula (III) can be used in the next step without purification.
(Reference production method 2)
Formula (V):
Figure JPOXMLDOC01-appb-I000018
The compound represented by the formula (VI):
Figure JPOXMLDOC01-appb-I000019
It can manufacture by making the compound shown by p-toluenesulfonyl chloride react.
The reaction is usually performed in a basic solvent such as pyridine.
The amount of paratoluenesulfonyl chloride used in the reaction is usually 1 to 4 moles per mole of the compound represented by the formula (VI).
The reaction temperature is usually in the range of -10 to 50 ° C. The reaction time is usually in the range of 1 to 10 hours.
After completion of the reaction, for example, the compound represented by the formula (V) is isolated by performing post-treatment operations such as pouring the reaction mixture into water, extracting with an organic solvent, and then drying and concentrating the organic layer. can do. The isolated compound represented by the formula (V) can be further purified by column chromatography or the like. The isolated compound represented by the formula (V) can be used in the next step without purification.
The compound represented by the formula (VI) is described in, for example, Journal of Medicinal Chemistry (2007) Vol. 50, (No. 12), P2818-2841.
The compound of the present invention has an excellent weed control effect and can be used as an active ingredient of a herbicide. Examples of weeds for which the compound of the present invention is effective include paddy field weeds such as Tainubie, Inu firefly, Azena, Urikawa and the like.
The herbicide of the present invention contains the compound of the present invention and an inert carrier. Examples of the inert carrier contained in the herbicide of the present invention include a liquid carrier and a solid carrier.
The herbicide of the present invention is usually formulated by dissolving or dispersing the compound of the present invention in a suitable liquid carrier, mixing the compound of the present invention with a suitable solid carrier, or adsorbing the compound of the present invention to a suitable solid carrier. It has been Examples of the pharmaceutical form of the herbicide of the present invention include emulsions, solutions, oils, wettable powders, powders, granules, granule wettable powders, aqueous solvents, flowable agents, dry flowable agents, jumbo agents, and tablets. . These preparations are supplemented with formulation adjuvants such as emulsifiers, dispersants, spreading agents, penetrating agents, wetting agents, binders, thickeners, preservatives, antioxidants, and coloring agents as necessary. ing.
The herbicide of the present invention usually contains 0.01 to 90% by weight of the compound of the present invention.
Examples of the liquid carrier include water, alcohols (for example, methanol, ethanol, 1-propanol, 2-propanol, and ethylene glycol), ketones (for example, acetone and methyl ethyl ketone), ethers (for example, dioxane, tetrahydrofuran). , Ethylene glycol monomethyl ether, diethylene glycol monomethyl ether, and propylene glycol monomethyl ether), aliphatic hydrocarbons (eg, hexane, octane, cyclohexane, kerosene, fuel oil, and machine oil), aromatic hydrocarbons (eg, benzene) Toluene, xylene, solvent naphtha, and methylnaphthalene), halogenated hydrocarbons (eg, dichloromethane, chloroform, and carbon tetrachloride), acid amides (eg, dimethylform Amides, dimethyl acetamide, and N- methylpyrrolidone), esters (e.g., ethyl acetate, butyl acetate, and fatty acid glycerine esters), and nitriles (e.g., acetonitrile, and propionitrile) and the like.
Solid carriers include vegetable powders (eg, soybean powder, tobacco powder, wheat flour, and wood powder), mineral powders (eg, clays such as kaolin, bentonite, acid clay, clay; talc powder, wax stone powder, etc. Talc; silica such as diatomaceous earth and mica powder), alumina, sulfur powder, activated carbon, saccharides (for example, lactose and glucose), inorganic salts (for example, calcium carbonate and sodium bicarbonate), and glass hollow bodies Can be mentioned.
The liquid carrier or solid carrier is contained in the herbicide of the present invention in a proportion of usually 1 to 99% by weight, preferably about 10 to 99% by weight, based on the total amount.
Surfactants are usually used as emulsifiers, dispersants, spreaders, penetrants, wetting agents and the like used in the formulation. Examples of such surfactants include negative alkyl sulfate salts, alkyl aryl sulfonates, dialkyl sulfosuccinates, polyoxyethylene alkyl aryl ether phosphate esters, lignin sulfonates, naphthalene sulfonate formaldehyde polycondensates, and the like. Examples thereof include ionic surfactants and nonionic surfactants such as polyoxyethylene alkyl ether, polyoxyethylene alkyl aryl ether, polyoxyethylene alkyl polyoxypropylene block copolymer, and sorbitan fatty acid ester. The surfactant is usually contained in the herbicide of the present invention in a proportion of 0.1 to 50% by weight, preferably about 0.1 to 25% by weight, based on the total amount.
Examples of the binder and thickener include, for example, dextrin, sodium salt of carboxymethyl cellulose, polycarboxylic acid polymer compound, polyvinyl pyrrolidone, polyvinyl alcohol, sodium lignin sulfonate, calcium lignin sulfonate, sodium polyacrylate, gum arabic, Examples include sodium alginate, mannitol, sorbitol, bentonite mineral, polyacrylic acid and its derivatives, sodium salt of carboxymethyl cellulose, white carbon, and natural sugar derivatives (eg, xanthan gum, guar gum, etc.).
The content ratio of the compound of the present invention in the preparation is, for example, as follows.
1. Emulsions, wettable powders, granular wettable powders, liquids, aqueous solvents, flowables, tablets, and dry flowables: Usually in a proportion of 1 to 90% by weight.
2. For oils and powders: usually 0.01 to 10% by weight.
3. Granules and jumbo agents: Usually 0.05 to 25% by weight.
Emulsions, wettable powders, granular wettable powders, liquids, aqueous solvents, flowables and the like are usually used after being diluted about 100 to 100,000 times with water or the like.
The weed control method of the present invention is carried out by applying an effective amount of the compound of the present invention to weeds, soils on which weeds grow, or soils on which weeds will grow in the future. The method for controlling weeds of the present invention is usually carried out by applying the preparation of the compound of the present invention to weeds, soils where weeds will grow, or soils where weeds will grow in the future.
As the application method when using the compound of the present invention for controlling weeds, the same methods as those for applying known ordinary agricultural chemicals are used. Examples of such application methods include soil treatment and foliage treatment. When the compound of the present invention is used for controlling weeds, the application amount of the compound of the present invention is usually 1 to 5000 g per 10,000 m 2 of application site.
The compound of the present invention can be used for controlling weeds in paddy fields. When the compound of the present invention is used for controlling weeds in paddy fields, the amount of the compound of the present invention is usually 1 to 5000 g per 10,000 m 2 of paddy field.
The herbicide of the present invention is usually applied before or after emergence of weeds for paddy field weed control.
When the compound of the present invention is formulated into an emulsion, wettable powder, granule wettable powder, aqueous solvent, flowable agent, dry flowable agent, etc., the water is added so that the concentration of the compound of the present invention becomes 0.1 to 1000 ppm. It is applied by spraying after dilution. When the compound of the present invention is formulated into a liquid, oil, powder, granule, jumbo, tablet or the like, the formulation is usually applied as it is.
The herbicide of the present invention may be applied and / or mixed simultaneously with one or more other herbicides, plant growth regulators, fungicides, insecticides, acaricides, nematicides and the like as necessary. Can be applied. .
As an active ingredient of such other herbicides, for example,
(1) a phenoxy fatty acid herbicidal compound,
(2) benzoic acid herbicidal compound,
(3) urea herbicidal compound,
(4) a triazine herbicidal compound,
(5) bipyridinium herbicidal compound,
(6) hydroxybenzonitrile herbicidal compound,
(7) dinitroaniline herbicidal compound,
(8) an organophosphorus herbicidal compound,
(9) carbamate herbicidal compounds,
(10) an acid amide herbicidal compound,
(11) a chloroacetanilide herbicidal compound,
(12) diphenyl ether herbicidal compound,
(13) a cyclic imide herbicidal compound,
(14) a pyrazole herbicidal compound,
(15) a triketone herbicidal compound,
(16) Aryloxyphenoxypropionic acid herbicidal compound,
(17) a trione oxime herbicidal compound,
(18) a sulfonylurea herbicidal compound,
(19) imidazolinone herbicidal compound and (21) pyrimidinyloxybenzoic acid herbicidal compound.
As an active ingredient of such a disinfectant, for example,
(1) a polyhaloalkylthio fungicidal compound,
(2) organophosphorus fungicidal compound,
(3) benzimidazole bactericidal compound,
(4) Carboxamide fungicidal compound,
(6) acylalanine bactericidal compound,
(7) azole fungicidal compound,
(8) Morpholine bactericidal compound,
(9) strobilurin bactericidal compound,
(10) Antibiotics, and (11) Dithiocarbamate bactericidal compounds.
As an active ingredient of such an insecticide, for example,
(1) organophosphorus insecticidal compound,
(2) carbamate insecticidal compounds,
(3) pyrethroid insecticidal compound,
(4) nereistoxin insecticidal compound,
(5) Neonicotinoid insecticidal compound,
(6) Benzoylphenylurea insecticidal compound, and (7) Macrolide insecticidal compound.
The herbicide of the present invention may be mixed with pigments, fertilizers (for example, urea and the like) and the like.
The compound of the present invention can control weeds in farmland where crops such as rice are grown.
 以下に製造例、参考例、製剤例及び試験例を挙げて、本発明をより具体的に説明するが、本発明はこれらの例に限定されない。
製造例1
5−ベンゾイル−4−クロロ−2,3−ジヒドロベンゾ[b]チオフェン−1,1−ジオキシドの合成
Figure JPOXMLDOC01-appb-I000020
 4−クロロ−2,3−ジヒドロベンゾ[b]チオフェン1.00gと塩化アルミニウム1.20gとをクロロホルム10mlに加えた。この混合物に、氷冷下で塩化ベンゾイル1.0mlを滴下した。この混合物を氷冷下で2時間攪拌した。氷水20mlに、反応混合物とクロロホルム20mlとを加え、次いで分液した。有機層を無水硫酸マグネシウムで乾燥し、減圧濃縮した。得られた残渣をシリカゲルカラムクロマトグラフィー(移動相:酢酸エチル/ヘキサン=1/10)に付して5−ベンゾイル−4−クロロ−2,3−ジヒドロベンゾ[b]チオフェンと7−ベンゾイル−4−クロロ−2,3−ジヒドロベンゾ[b]チオフェンとの混合物を1.57g得た。クロロホルム20mlに、氷冷下で5−ベンゾイル−4−クロロ−2,3−ジヒドロベンゾ[b]チオフェンと7−ベンゾイル−4−クロロ−2,3−ジヒドロベンゾ[b]チオフェンとの混合物及び70%メタクロロ過安息香酸3.00gを加えた。得られた混合物を室温で6時間攪拌した。反応混合物に飽和チオ硫酸ナトリウム水溶液を1ml加えた。この溶液を飽和炭酸水素ナトリウム水溶液40mlで4回洗浄し、無水硫酸マグネシウムで乾燥し、減圧濃縮した。得られた残渣を中圧分取HPLC(酢酸エチル:ヘキサン=3:7から1:1)に付して5−ベンゾイル−4−クロロ−2,3−ジヒドロベンゾ[b]チオフェン−1,1−ジオキシドを1.31gと7−ベンゾイル−4−クロロ−2,3−ジヒドロベンゾ[b]チオフェン−1,1−ジオキシド0.10gとを得た。
5−ベンゾイル−4−クロロ−2,3−ジヒドロベンゾ[b]チオフェン−1,1−ジオキシド
H−NMR(CDCl)δppm:3.45(2H,t,J=6.9Hz),3.62(2H,t,J=6.9Hz),7.49−7.53(3H,m),7.65(1H,d,J=7.5Hz),7.66−7.80(3H,m).
7−ベンゾイル−4−クロロ−2,3−ジヒドロベンゾ[b]チオフェン−1,1−ジオキシド
H−NMR(CDCl)δppm:3.44(2H,t,J=6.9Hz),3.57(2H,t,J=6.9Hz),7.49−7.52(2H,m),7.57(1H,d,J=8.0Hz),7.62−7.67(2H,m),7.83−7.85(2H,m).
 以下、本発明化合物の原料化合物の製造例を参考例として示す。
参考例1
2−クロロ−6−フルオロフェニルアセトニトリルの合成
Figure JPOXMLDOC01-appb-I000021
 2−クロロ−6−フルオロベンジルクロリド50.0gをジメチルスルホキシド300mlに溶解した。この溶液にシアン化ナトリウム16.0gを加えて23℃で5時間攪拌した。反応混合物を水1000mlに加えて、t−ブチルメチルエーテル1000mlで抽出した。有機層を飽和食塩水1000mlで洗浄後、無水硫酸マグネシウムで乾燥し、減圧濃縮して2−クロロ−6−フルオロフェニルアセトニトリルを47.6g得た。
H−NMR(CDCl)δppm:3.85(2H,s),7.08−7.10(1H,m),7.26−7.32(2H,m).
参考例2
2−クロロ−6−フルオロフェニル酢酸の合成
Figure JPOXMLDOC01-appb-I000022
 水150mlに2−クロロ−6−フルオロフェニルアセトニトリル47.6g、及び96%硫酸150mlを加えた。この混合物を120℃で12時間攪拌した。反応混合物に水600mlを加え、室温で2時間、さらに氷冷下で30分間冷却した。析出した固体を濾過により集め、水300mlで洗浄し、乾燥して2−クロロ−6−フルオロフェニル酢酸を49.2g得た。
H−NMR(DMSO−d6)δppm:3.70(2H,s),7.20−7.28(1H,m),7.30−7.44(2H,m).
参考例3
2−(2−クロロ−6−フルオロフェニル)エタノールの合成
Figure JPOXMLDOC01-appb-I000023
 テトラヒドロフラン600mlに2−クロロ−6−フルオロフェニル酢酸24.6gを加え、次いで氷冷下でリチウムアルミニウムヒドリド4.20gを加えた。この混合物を室温で1時間攪拌し、次いで3時間加熱還流した。反応混合物を室温まで冷却した。反応混合物を氷冷した水13mlとテトロヒドロフラン53mlとの混合物を加えた。10分後、この混合物をセライトを通して濾過し、濾過残渣をテトロヒドロフラン300mlで洗浄した。ろ液を減圧濃縮して2−(2−クロロ−6−フルオロフェニル)エタノールを14.8g得た。
H−NMR(CDCl)δppm:1.60(1H,br),3.08−3.11(2H,m),3.84−3.88(2H,m),6.96−7.00(1H,m),7.12−7.19(2H,m).
参考例4
2−(2−クロロ−6−フルオロフェニル)エチル p−トルエンスルホネートの合成
Figure JPOXMLDOC01-appb-I000024
 ピリジン87mlに2−(2−クロロ−6−フルオロフェニル)エタノール29.2gを加え、次いで氷冷下でパラトルエンスルホニルクロリド30.0gを加えた。この混合物を室温で5時間攪拌した。水870mlに反応混合物を加え、t−ブチルメチルエーテル870mlで抽出した。有機層を3.5%塩酸900ml及び飽和食塩水900mlで順次洗浄し、無水硫酸マグネシウムで乾燥した後、減圧濃縮して2−(2−クロロ−6−フルオロフェニル)エチル p−トルエンスルホネートを47.3g得た。
H−NMR(CDCl)δppm:2.43(3H,s),3.14(2H,t,J=7.1Hz),4.21(2H,t,J=7.1Hz),6.90−7.00(1H,m),7.12−7.15(2H,m),7.28(2H,d,J=8.7Hz),7.71(2H,d,J=8.7Hz).
参考例5
4−クロロ−2,3−ジヒドロベンゾ[b]チオフェン の合成
Figure JPOXMLDOC01-appb-I000025
 1−メチル−2−ピロリドン470mlに2−(2−クロロ−6−フルオロフェニル)エチル p−トルエンスルホネート47.0g及び硫化ナトリウム9水和物40.2gを加えた。この混合物を150℃で10時間攪拌した。水940mlに反応混合物を加え、t−ブチルメチルエーテル940mlで抽出した。有機層を飽和食塩水1000mlで二回洗浄後、無水硫酸マグネシウムで乾燥し、減圧濃縮した。得られた残渣をシリカゲルカラムクロマトグラフィー(移動相:ヘキサン)に付して4−クロロ−2,3−ジヒドロベンゾ[b]チオフェンを11.6g得た。
H−NMR(CDCl)δppm:3.40(4H,s),6.95−7.10(3H,m).
参考例6
5−ベンゾイル−4−クロロ−2,3−ジヒドロベンゾ[b]チオフェンと7−ベンゾイル−4−クロロ−2,3−ジヒドロベンゾ[b]チオフェンの合成
 4−クロロ−2,3−ジヒドロベンゾ[b]チオフェン37gのクロロホルム355mlに溶液に塩化アルミニウム粉末41.6gを加えた。ここに氷冷下で塩化ベンゾイル38.0gを滴下した。この混合物を4時間撹拌した。氷水533mlに反応混合物を加えて分液した。有機層を水178mlで洗浄し、無水硫酸マグネシウムで乾燥後、減圧濃縮して残渣82.9gを得た。この残渣に、ジイソプロピルエーテル165mlとヘキサン165mlを加え、この混合物を30分間加熱還流した。反応混合物を室温まで放冷し、次いで30分間氷冷した。析出した固体を濾過により集め、5−ベンゾイル−4−クロロ−2,3−ジヒドロベンゾ[b]チオフェンと7−ベンゾイル−4−クロロ−2,3−ジヒドロベンゾ[b]チオフェンとの混合物46.4g得た。5−ベンゾイル−4−クロロ−2,3−ジヒドロベンゾ[b]チオフェンと7−ベンゾイル−4−クロロ−2,3−ジヒドロベンゾ[b]チオフェンとの混合物400mgを、アセトニトリル6mlに溶解して、得られた溶液をODS中圧カラム〔移動相:アセトニトリル/水=86%/14%(容量%)〕に付し、 5−ベンゾイル−4−クロロ−2,3−ジヒドロベンゾ[b]チオフェンを350mg、7−ベンゾイル−4−クロロ−2,3−ジヒドロベンゾ[b]チオフェンを3mg得た。
5−ベンゾイル−4−クロロ−2,3−ジヒドロベンゾ[b]チオフェン
Figure JPOXMLDOC01-appb-I000026
H−NMR(CDCl)δ(ppm):3.45(4H,s),7.14~7.18(2H,m),7.44~7.48(2H,m),7.57~7.61(1H,m),7.81~7.83(2H,m).
7−ベンゾイル−4−クロロ−2,3−ジヒドロベンゾ[b]チオフェン
Figure JPOXMLDOC01-appb-I000027
H−NMR(CDCl)δ(ppm):3.34~3.46(4H,m),7.06(1H,d,J=8.29Hz),7.44~7.50(3H,m),7.55~7.60(1H,m),7.70~7.72(2H,m).
 次に、本発明化合物を含有する製剤例を示す。
製剤例1
  本発明化合物             50重量%
  リグニンスルホン酸ナトリウム      5重量%
  ポリオキシエチレンアルキルエーテル   5重量%
  ホワイトカーボン            5重量%
  クレイ                35重量%
を混合粉砕して水和剤を得る。
製剤例2
  本発明化合物            1.5重量%
  リグニンスルホン酸ナトリウム      2重量%
  タルク                40重量%
  ベントナイト           56.5重量%
を混合し、水を加えて練り合わせ造粒して粒剤を得る。
 次に、本発明化合物が雑草の防除に有用であることを試験例に示す。
試験例1
プラスチックポット(φ9cm×10cm)に土を詰め、水を入れて代掻きし、3日間静置した。このポットにアゼナ種子を混ぜた土を均一に蒔き、温室内(20~25℃)で6日間放置した。このポットに深さ3cmになるように水を入れた。次いで、このポットに、試験化合物をアセトンで溶解して純水で希釈した薬液を所定薬量分入れた。薬剤処理3週間後に、アゼナに対する除草効果を観察し、11段階評価(0:無作用~10:完全枯殺)を行った。その結果、本発明化合物は4000g/haの処理薬量で効力8を示した。
Hereinafter, the present invention will be described more specifically with reference to production examples, reference examples, formulation examples, and test examples, but the present invention is not limited to these examples.
Production Example 1
Synthesis of 5-benzoyl-4-chloro-2,3-dihydrobenzo [b] thiophene-1,1-dioxide
Figure JPOXMLDOC01-appb-I000020
1.00 g of 4-chloro-2,3-dihydrobenzo [b] thiophene and 1.20 g of aluminum chloride were added to 10 ml of chloroform. To this mixture, 1.0 ml of benzoyl chloride was added dropwise under ice cooling. The mixture was stirred for 2 hours under ice cooling. The reaction mixture and 20 ml of chloroform were added to 20 ml of ice water, followed by liquid separation. The organic layer was dried over anhydrous magnesium sulfate and concentrated under reduced pressure. The obtained residue was subjected to silica gel column chromatography (mobile phase: ethyl acetate / hexane = 1/10) to give 5-benzoyl-4-chloro-2,3-dihydrobenzo [b] thiophene and 7-benzoyl-4. -1.57 g of a mixture with -chloro-2,3-dihydrobenzo [b] thiophene was obtained. A mixture of 5-benzoyl-4-chloro-2,3-dihydrobenzo [b] thiophene and 7-benzoyl-4-chloro-2,3-dihydrobenzo [b] thiophene in 20 ml of chloroform under ice-cooling and 70 3.00 g of% metachloroperbenzoic acid was added. The resulting mixture was stirred at room temperature for 6 hours. 1 ml of saturated aqueous sodium thiosulfate solution was added to the reaction mixture. This solution was washed 4 times with 40 ml of saturated aqueous sodium hydrogen carbonate solution, dried over anhydrous magnesium sulfate, and concentrated under reduced pressure. The obtained residue was subjected to medium pressure preparative HPLC (ethyl acetate: hexane = 3: 7 to 1: 1) to give 5-benzoyl-4-chloro-2,3-dihydrobenzo [b] thiophene-1,1. -1.31 g of dioxide and 0.10 g of 7-benzoyl-4-chloro-2,3-dihydrobenzo [b] thiophene-1,1-dioxide were obtained.
5-Benzoyl-4-chloro-2,3-dihydrobenzo [b] thiophene-1,1-dioxide
1 H-NMR (CDCl 3 ) δ ppm: 3.45 (2H, t, J = 6.9 Hz), 3.62 (2H, t, J = 6.9 Hz), 7.49-7.53 (3H, m), 7.65 (1H, d, J = 7.5 Hz), 7.66-7.80 (3H, m).
7-Benzoyl-4-chloro-2,3-dihydrobenzo [b] thiophene-1,1-dioxide
1 H-NMR (CDCl 3 ) δ ppm: 3.44 (2H, t, J = 6.9 Hz), 3.57 (2H, t, J = 6.9 Hz), 7.49-7.52 (2H, m), 7.57 (1H, d, J = 8.0 Hz), 7.62-7.67 (2H, m), 7.83-7.85 (2H, m).
Hereinafter, production examples of raw material compounds of the compounds of the present invention are shown as reference examples.
Reference example 1
Synthesis of 2-chloro-6-fluorophenylacetonitrile
Figure JPOXMLDOC01-appb-I000021
20.0 g of 2-chloro-6-fluorobenzyl chloride was dissolved in 300 ml of dimethyl sulfoxide. To this solution, 16.0 g of sodium cyanide was added and stirred at 23 ° C. for 5 hours. The reaction mixture was added to 1000 ml of water and extracted with 1000 ml of t-butyl methyl ether. The organic layer was washed with 1000 ml of saturated brine, dried over anhydrous magnesium sulfate, and concentrated under reduced pressure to obtain 47.6 g of 2-chloro-6-fluorophenylacetonitrile.
1 H-NMR (CDCl 3 ) δ ppm: 3.85 (2H, s), 7.08-7.10 (1H, m), 7.26-7.32 (2H, m).
Reference example 2
Synthesis of 2-chloro-6-fluorophenylacetic acid
Figure JPOXMLDOC01-appb-I000022
To 150 ml of water, 47.6 g of 2-chloro-6-fluorophenylacetonitrile and 150 ml of 96% sulfuric acid were added. The mixture was stirred at 120 ° C. for 12 hours. 600 ml of water was added to the reaction mixture, and the mixture was cooled at room temperature for 2 hours and further under ice cooling for 30 minutes. The precipitated solid was collected by filtration, washed with 300 ml of water, and dried to obtain 49.2 g of 2-chloro-6-fluorophenylacetic acid.
1 H-NMR (DMSO-d6) δ ppm: 3.70 (2H, s), 7.20-7.28 (1H, m), 7.30-7.44 (2H, m).
Reference example 3
Synthesis of 2- (2-chloro-6-fluorophenyl) ethanol
Figure JPOXMLDOC01-appb-I000023
24.6 g of 2-chloro-6-fluorophenylacetic acid was added to 600 ml of tetrahydrofuran, and then 4.20 g of lithium aluminum hydride was added under ice cooling. The mixture was stirred at room temperature for 1 hour and then heated to reflux for 3 hours. The reaction mixture was cooled to room temperature. A mixture of 13 ml of ice-cooled water and 53 ml of tetrohydrofuran was added to the reaction mixture. After 10 minutes, the mixture was filtered through celite and the filter residue was washed with 300 ml of tetrohydrofuran. The filtrate was concentrated under reduced pressure to obtain 14.8 g of 2- (2-chloro-6-fluorophenyl) ethanol.
1 H-NMR (CDCl 3 ) δ ppm: 1.60 (1H, br), 3.08-3.11 (2H, m), 3.84-3.88 (2H, m), 6.96-7 .00 (1H, m), 7.12-7.19 (2H, m).
Reference example 4
Synthesis of 2- (2-chloro-6-fluorophenyl) ethyl p-toluenesulfonate
Figure JPOXMLDOC01-appb-I000024
To 87 ml of pyridine, 29.2 g of 2- (2-chloro-6-fluorophenyl) ethanol was added, and then 30.0 g of paratoluenesulfonyl chloride was added under ice cooling. The mixture was stirred at room temperature for 5 hours. The reaction mixture was added to 870 ml of water and extracted with 870 ml of t-butyl methyl ether. The organic layer was washed successively with 900 ml of 3.5% hydrochloric acid and 900 ml of saturated brine, dried over anhydrous magnesium sulfate, and concentrated under reduced pressure to give 2- (2-chloro-6-fluorophenyl) ethyl p-toluenesulfonate. .3 g was obtained.
1 H-NMR (CDCl 3 ) δ ppm: 2.43 (3H, s), 3.14 (2H, t, J = 7.1 Hz), 4.21 (2H, t, J = 7.1 Hz), 6 .90-7.00 (1H, m), 7.12-7.15 (2H, m), 7.28 (2H, d, J = 8.7 Hz), 7.71 (2H, d, J = 8.7 Hz).
Reference Example 5
Synthesis of 4-chloro-2,3-dihydrobenzo [b] thiophene
Figure JPOXMLDOC01-appb-I000025
To 470 ml of 1-methyl-2-pyrrolidone, 47.0 g of 2- (2-chloro-6-fluorophenyl) ethyl p-toluenesulfonate and 40.2 g of sodium sulfide nonahydrate were added. The mixture was stirred at 150 ° C. for 10 hours. The reaction mixture was added to 940 ml of water and extracted with 940 ml of t-butyl methyl ether. The organic layer was washed twice with 1000 ml of saturated brine, dried over anhydrous magnesium sulfate, and concentrated under reduced pressure. The obtained residue was subjected to silica gel column chromatography (mobile phase: hexane) to obtain 11.6 g of 4-chloro-2,3-dihydrobenzo [b] thiophene.
1 H-NMR (CDCl 3 ) δ ppm: 3.40 (4H, s), 6.95-7.10 (3H, m).
Reference Example 6
Synthesis of 5-benzoyl-4-chloro-2,3-dihydrobenzo [b] thiophene and 7-benzoyl-4-chloro-2,3-dihydrobenzo [b] thiophene 4-chloro-2,3-dihydrobenzo [ b] 41.6 g of aluminum chloride powder was added to 355 ml of chloroform containing 37 g of thiophene. Thereto, 38.0 g of benzoyl chloride was added dropwise under ice cooling. The mixture was stirred for 4 hours. The reaction mixture was added to 533 ml of ice water for liquid separation. The organic layer was washed with 178 ml of water, dried over anhydrous magnesium sulfate, and concentrated under reduced pressure to obtain 82.9 g of a residue. To this residue, 165 ml of diisopropyl ether and 165 ml of hexane were added, and the mixture was heated to reflux for 30 minutes. The reaction mixture was allowed to cool to room temperature and then ice-cooled for 30 minutes. The precipitated solid was collected by filtration and a mixture of 5-benzoyl-4-chloro-2,3-dihydrobenzo [b] thiophene and 7-benzoyl-4-chloro-2,3-dihydrobenzo [b] thiophene46. 4 g was obtained. 400 mg of a mixture of 5-benzoyl-4-chloro-2,3-dihydrobenzo [b] thiophene and 7-benzoyl-4-chloro-2,3-dihydrobenzo [b] thiophene was dissolved in 6 ml of acetonitrile, The obtained solution was applied to an ODS medium pressure column [mobile phase: acetonitrile / water = 86% / 14% (volume%)] to give 5-benzoyl-4-chloro-2,3-dihydrobenzo [b] thiophene. 350 mg, 7 mg of 7-benzoyl-4-chloro-2,3-dihydrobenzo [b] thiophene was obtained.
5-Benzoyl-4-chloro-2,3-dihydrobenzo [b] thiophene
Figure JPOXMLDOC01-appb-I000026
1 H-NMR (CDCl 3 ) δ (ppm): 3.45 (4H, s), 7.14 to 7.18 (2H, m), 7.44 to 7.48 (2H, m), 7. 57-7.61 (1H, m), 7.81-7.83 (2H, m).
7-Benzoyl-4-chloro-2,3-dihydrobenzo [b] thiophene
Figure JPOXMLDOC01-appb-I000027
1 H-NMR (CDCl 3 ) δ (ppm): 3.34 to 3.46 (4H, m), 7.06 (1H, d, J = 8.29 Hz), 7.44 to 7.50 (3H M), 7.55 to 7.60 (1H, m), 7.70 to 7.72 (2H, m).
Next, formulation examples containing the compound of the present invention are shown.
Formulation Example 1
50% by weight of the compound of the present invention
Sodium lignin sulfonate 5% by weight
Polyoxyethylene alkyl ether 5% by weight
5% white carbon
Clay 35% by weight
To obtain a wettable powder.
Formulation Example 2
Compound of the present invention 1.5% by weight
2% by weight sodium lignin sulfonate
Talc 40% by weight
Bentonite 56.5% by weight
Are mixed and kneaded and granulated to obtain granules.
Next, test examples show that the compounds of the present invention are useful for controlling weeds.
Test example 1
A plastic pot (φ9 cm × 10 cm) was filled with soil, water was added, and the mixture was left standing for 3 days. The pot was mixed with soil mixed with Azena seeds uniformly and left in a greenhouse (20-25 ° C.) for 6 days. Water was added to the pot to a depth of 3 cm. Next, a chemical solution prepared by dissolving the test compound with acetone and diluting with pure water was added to the pot in a predetermined amount. Three weeks after the drug treatment, the herbicidal effect on Azena was observed, and an 11-level evaluation (0: no action to 10: complete killing) was performed. As a result, the compound of the present invention showed efficacy 8 at a treatment dose of 4000 g / ha.
 本発明化合物は雑草防除効力を有する。本発明化合物の有効量を雑草、雑草が生育する土壌、又は雑草が将来生育するであろう土壌に施用することにより、雑草を防除することができる。 The compound of the present invention has a weed control effect. Weeds can be controlled by applying an effective amount of the compound of the present invention to weeds, soils where weeds will grow, or soils where weeds will grow in the future.

Claims (8)

  1.  式(I)
    Figure JPOXMLDOC01-appb-I000001
    で示されるケトン化合物。
    Formula (I)
    Figure JPOXMLDOC01-appb-I000001
    A ketone compound represented by
  2.  式(II)
    Figure JPOXMLDOC01-appb-I000002
    で示される化合物とメタクロロ過安息香酸とを反応させる工程を有する請求項1記載のケトン化合物の製造方法。
    Formula (II)
    Figure JPOXMLDOC01-appb-I000002
    The manufacturing method of the ketone compound of Claim 1 which has the process with which the compound shown by and metachloroperbenzoic acid are made to react.
  3.  請求項1記載のケトン化合物と不活性担体とを含有する除草剤。 A herbicide containing the ketone compound according to claim 1 and an inert carrier.
  4.  請求項1記載のケトン化合物の有効量を雑草、雑草が生育する土壌、又は雑草が将来生育するであろう土壌に施用する雑草の防除方法。 A method for controlling weeds, wherein an effective amount of the ketone compound according to claim 1 is applied to weeds, soils on which weeds grow, or soils on which weeds will grow in the future.
  5.  雑草防除のための請求項1記載のケトン化合物の使用。 Use of the ketone compound according to claim 1 for controlling weeds.
  6.  式(II)
    Figure JPOXMLDOC01-appb-I000003
    で示される化合物。
    Formula (II)
    Figure JPOXMLDOC01-appb-I000003
    A compound represented by
  7.  式(III):
    Figure JPOXMLDOC01-appb-I000004
    で示される化合物と、式(IV):
    Figure JPOXMLDOC01-appb-I000005
    〔式中、Xはハロゲン原子を表す。〕
    で示される化合物とをルイス酸存在下で反応させる工程を有する請求項6記載の化合物の製造方法。
    Formula (III):
    Figure JPOXMLDOC01-appb-I000004
    A compound of formula (IV):
    Figure JPOXMLDOC01-appb-I000005
    [Wherein, X represents a halogen atom. ]
    The method for producing a compound according to claim 6, further comprising a step of reacting the compound represented by formula (1) with a Lewis acid.
  8.  ルイス酸が塩化アルミニウムである請求項7記載の製造方法。 The production method according to claim 7, wherein the Lewis acid is aluminum chloride.
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