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WO2023284761A1 - 一种吡唑醚类化合物及其制备方法和应用 - Google Patents

一种吡唑醚类化合物及其制备方法和应用 Download PDF

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Publication number
WO2023284761A1
WO2023284761A1 PCT/CN2022/105331 CN2022105331W WO2023284761A1 WO 2023284761 A1 WO2023284761 A1 WO 2023284761A1 CN 2022105331 W CN2022105331 W CN 2022105331W WO 2023284761 A1 WO2023284761 A1 WO 2023284761A1
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methyl
hydrogen
hours
reaction
butyl
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PCT/CN2022/105331
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English (en)
French (fr)
Inventor
吕亮
李宏伟
庞俊倩
杜永磊
张扬
陈晨
袁硕
周飞
郑斐
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南通泰禾化工股份有限公司
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Publication of WO2023284761A1 publication Critical patent/WO2023284761A1/zh

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    • 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
    • A01N43/48Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having rings with two nitrogen atoms as the only ring hetero atoms
    • A01N43/561,2-Diazoles; Hydrogenated 1,2-diazoles
    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07DHETEROCYCLIC COMPOUNDS
    • C07D231/00Heterocyclic compounds containing 1,2-diazole or hydrogenated 1,2-diazole rings
    • C07D231/02Heterocyclic compounds containing 1,2-diazole or hydrogenated 1,2-diazole rings not condensed with other rings
    • C07D231/10Heterocyclic compounds containing 1,2-diazole or hydrogenated 1,2-diazole rings not condensed with other rings having two or three double bonds between ring members or between ring members and non-ring members
    • C07D231/12Heterocyclic compounds containing 1,2-diazole or hydrogenated 1,2-diazole rings not condensed with other rings having two or three double bonds between ring members or between ring members and non-ring members with only hydrogen atoms, hydrocarbon or substituted hydrocarbon radicals, directly attached to ring carbon atoms

Definitions

  • the present application relates to the field of agricultural fungicides, such as a pyrazole ether compound and its preparation method and application.
  • Amide fungicides are a kind of commonly used fungicides, which account for a considerable proportion of fungicides. They have attracted attention for their high-efficiency biological activity. However, after a period of use of these fungicides, diseases will become resistant Therefore, there is a constant need to invent new and improved compounds and compositions with fungicidal activity.
  • CN101631460A discloses KC1, KC2, and KC2 (respectively compounds 595, 596 and 599 in the patent). These disclosed compounds have herbicidal activity, but no pyrazole ethers have been reported. Bactericidal activity of compounds.
  • the application provides a pyrazole ether compound and its preparation method and application.
  • the application provides a pyrazole ether compound, the pyrazole ether compound has the structure shown in formula I:
  • R is selected from phenyl, pyridyl, pyrimidinyl, pyrazolyl, thiazolyl, oxazolyl, isoxazolyl substituted by at least one R 10 ;
  • R 2 and R 3 are independently selected from hydrogen, halogen, C1-C6 alkyl, C1-C6 haloalkyl, C1-C6 alkoxy, C1-C6 haloalkoxy;
  • R is selected from C1 - C6 alkyl, C1-C6 alkoxy, C1-C6 haloalkyl, C1-C6 haloalkoxy;
  • R is selected from hydrogen, methyl ;
  • R is selected from hydrogen, halogen, C1- C6 alkyl or C1-C6 haloalkyl
  • R 7 is selected from hydrogen, methyl
  • R 8 is selected from hydrogen, C1-C6 alkyl
  • R9 is selected from C1-C8 alkyl, hydroxy C1-C6 alkyl, C1-C6 cycloalkyl, C1-C6 cycloalkylC1-C6 alkyl; or
  • R 8 and R 9 together with the nitrogen atom they are connected to form a three-membered to six-membered saturated ring group, the ring group may optionally contain an oxygen atom or a sulfur atom;
  • R 10 is selected from hydrogen, halogen, cyano, nitro, hydroxyl, amino, C1-C6 alkyl, C1-C6 haloalkyl, C1-C6 alkoxy, C1-C6 haloalkoxy, C1-C6 alkyl Substituted amino, C1-C6 alkylcarbonylamino, C1-C6 alkylsulfoxide, C1-C6 alkylsulfone, C1-C6 haloalkylsulfoxide, C1-C6 haloalkylsulfoxide.
  • the pyrazole ether compound has the structure shown in formula II:
  • R 2 and R 3 are independently selected from hydrogen, fluorine, chlorine, bromine, iodine, methyl, difluoromethyl, trifluoromethyl, methoxy, trifluoromethoxy, difluoromethoxy;
  • R is selected from methyl, difluoromethyl, trifluoromethyl, methoxy, difluoromethoxy, trifluoromethoxy ;
  • R is selected from hydrogen, methyl ;
  • R is selected from hydrogen, fluorine, chlorine, bromine, iodine, methyl, difluoromethyl, trifluoromethyl ;
  • R 7 is selected from hydrogen, methyl
  • R is selected from hydrogen, methyl, ethyl, n-propyl, isopropyl, n-butyl, isobutyl, tert-butyl, n-pentyl, 2 -pentyl, neopentyl, isopentyl, 4 -Methyl-2-pentyl, n-hexyl;
  • R is selected from methyl, ethyl, hydroxyethyl, n-propyl, isopropyl, 1 -methylpropyl, 1-ethylpropyl, 2-methylpropyl, 3-methylpropyl, 1,1-dimethylpropyl, 2,2-dimethylpropyl, n-butyl, tert-butyl, 3-methylbutyl, 1,1-dimethyl-3,3-dimethyl Butyl, n-pentyl, 4-methyl-2-pentyl, 1-methylpentyl, 2-methylpentyl, 3-methylpentyl, 4-methylpentyl, n-hexyl, 2- Ethylhexyl, cyclopropyl, cyclobutyl, cyclopentyl, cyclohexyl, cyclopropylmethyl; or
  • R 8 and R 9 together with the nitrogen atom to which they are attached form pyrrole, piperidine or morpholine;
  • R is selected from hydrogen, fluorine, chlorine, bromine, iodine, cyano, nitro, hydroxyl, amino, methyl, ethyl, n-propyl, isopropyl, n-butyl, isobutyl, tert-butyl, Difluoromethyl, trifluoromethyl, pentafluoroethyl, heptafluoroisopropyl, methoxy, difluoromethoxy, trifluoromethoxy, methylamino, acetylamino, methylsulfonyl, trifluoromethyl Sulfonyl;
  • n an integer of 0 to 5 (for example, 0, 1, 2, 3, 4, 5).
  • the pyrazole ether compound is any one of the compounds shown in Table 1 below with the general formula I, wherein R 2 and R 3 are selected from hydrogen:
  • R 2 and R 3 are selected from hydrogen
  • R 4 is selected from methyl
  • R is selected from hydrogen ;
  • R 6 is selected from hydrogen, methyl
  • R is selected from hydrogen ;
  • R 8 is selected from hydrogen, methyl
  • R is selected from methyl, ethyl, hydroxyethyl, n-propyl, isopropyl, 1 -methylpropyl, 1-ethylpropyl, 2-methylpropyl, 3-methylpropyl, 1,1-dimethylpropyl, 2,2-dimethylpropyl, n-butyl, tert-butyl, 3-methylbutyl, 1,1-dimethyl-3,3-dimethyl Butyl, n-pentyl, 4-methyl-2-pentyl, 1-methylpentyl, 2-methylpentyl, 3-methylpentyl, 4-methylpentyl, n-hexyl, 2- ethylhexyl; or
  • R 8 and R 9 together with the nitrogen atom to which they are attached form pyrrole, piperidine or morpholine;
  • R is selected from hydrogen, fluorine, chlorine, cyano, methoxy, trifluoromethyl ;
  • n 0, 1 or 2.
  • the pyrazole ether compound is any one of the following compounds:
  • alkyl group mentioned in this application refers to a straight chain or a branched chain form, such as methyl, ethyl, n-propyl, isopropyl, n-butyl, isobutyl, sec-butyl, t-butyl, n-pentyl , Isopentyl, n-hexyl and other groups.
  • Haloalkyl means a group in which the alkyl group is substituted with one or more halogen atoms.
  • Alkoxy refers to a group with an oxygen atom attached to the end of the alkyl group, such as methoxy, ethoxy, n-propoxy, isopropoxy, tert-butoxy and the like.
  • Haloalkoxy means a group in which an alkoxy group is substituted with one or more halogen atoms.
  • Halogen is F, Cl, Br or I.
  • C1-C6 alkyl used in this application refers to a straight or branched chain alkyl group having 1 to 6 carbon atoms, including without limitation methyl, ethyl, n-propyl, isopropyl, n-butyl Base, isobutyl, sec-butyl, tert-butyl, n-pentyl, isopentyl, n-hexyl, etc.
  • C1-C6 alkoxy refers to a straight or branched chain alkoxy group having 1 to 6 carbon atoms, including without limitation methoxy, ethoxy, n-propoxy, isopropoxy And tert-butoxy, etc.
  • C1-C12 alkoxy has a similar meaning.
  • C3-C8 cycloalkyl used in this application refers to a cyclic alkyl group with 3 to 8 carbon atoms on the ring, including without limitation cyclopropyl, cyclobutyl, cyclopentyl, cyclohexyl, Cycloheptyl, cyclooctyl, etc.
  • C2-C12, C1-C6, C3-C8, etc. before the specific group indicate the number of carbon atoms contained in the group
  • C2-C12 means that the number of carbon atoms can be 2, 3, or 4 , 5, 6, 7, 8, 9, 10, 11 or 12 groups
  • C1-C6 represents a group with 1, 2, 3, 4, 5 or 6 carbon atoms
  • C3-C8 represents a carbon atom
  • C2-C4 represents a group whose number of carbon atoms can be 2, 3 or 4, etc., and so on.
  • the group Represents the attachment position of the group.
  • the present application provides the preparation method of the above-mentioned pyrazole ether compounds, the preparation method is:
  • R 11 is selected from C1-C6 alkyl.
  • the molar ratio of the compound represented by the formula II to the compound represented by the formula III is 0.5-2:1, such as 0.5:1, 0.8:1, 1:1, 1.2:1, 1.5:1, 1.8:1 or 2:1.
  • the solvent for the reaction is dichloromethane, chloroform, ethyl acetate, toluene, acetonitrile, tetrahydrofuran, dioxane, ethanol, methanol, N,N-dimethylformamide or dimethylsulfoxide, etc. Any one or a combination of at least two of them.
  • the reaction temperature is greater than or equal to room temperature and less than or equal to the boiling point of the reaction solvent, such as 20°C, 25°C, 30°C, 35°C, 40°C, 45°C, 50°C, 60°C, 70°C, 75°C, 80°C, 85°C, 90°C, etc., or react at the boiling point of the solvent, that is, under reflux.
  • the boiling point of the reaction solvent such as 20°C, 25°C, 30°C, 35°C, 40°C, 45°C, 50°C, 60°C, 70°C, 75°C, 80°C, 85°C, 90°C, etc.
  • the reaction time is 0.5-48 hours, such as 0.5 hours, 1 hour, 3 hours, 5 hours, 8 hours, 10 hours, 12 hours, 15 hours, 18 hours, 20 hours, 23 hours, 25 hours , 28 hours, 30 hours, 33 hours, 35 hours, 38 hours, 40 hours, 44 hours, or 48 hours.
  • the compound shown in formula III is prepared by the following method: the compound shown in formula IV reacts with the compound of formula V in the presence of a catalyst to obtain the compound shown in formula III, and the reaction formula is as follows:
  • R 1 , R 2 , R 3 , R 4 , R 5 , R 6 , R 7 , and R 11 are as described above, and will not be repeated here.
  • the reaction is carried out in the presence of an acidic substance, and the acidic substance is an organic acid and/or an inorganic acid.
  • the organic acid is any one or a combination of at least two of p-toluenesulfonic acid, methanesulfonic acid, trifluoroacetic acid and acetic acid.
  • the organic acid is any one or a combination of at least two of hydrochloric acid, hydrobromic acid, sulfuric acid, zinc chloride, ammonium chloride, ferric chloride.
  • no solvent may be added during the preparation of the compound represented by formula III.
  • the reaction in the preparation of the compound shown in formula III, can be carried out in a suitable solvent, the solvent of the reaction is dichloromethane, chloroform, ethyl acetate, toluene, acetonitrile, tetrahydrofuran, 1,4 dioxane Any one or a combination of at least two of rings, methanol, ethanol, isopropanol, n-butanol, water, N,N-dimethylformamide or dimethyl sulfoxide.
  • the solvent of the reaction is dichloromethane, chloroform, ethyl acetate, toluene, acetonitrile, tetrahydrofuran, 1,4 dioxane Any one or a combination of at least two of rings, methanol, ethanol, isopropanol, n-butanol, water, N,N-dimethylformamide or dimethyl sulfoxide.
  • the reaction temperature is greater than or equal to 0°C and less than or equal to the boiling point of the reaction solvent, such as 0°C, 3°C, 5°C, 8°C, 10°C, 15°C, 20°C °C, 25°C, 30°C, 35°C, 40°C, 45°C, 50°C, 60°C, 70°C, 75°C, 80°C, 85°C, 90°C, etc., or react at the boiling point of the solvent, that is, under reflux.
  • the reaction solvent such as 0°C, 3°C, 5°C, 8°C, 10°C, 15°C, 20°C °C, 25°C, 30°C, 35°C, 40°C, 45°C, 50°C, 60°C, 70°C, 75°C, 80°C, 85°C, 90°C, etc.
  • the reaction time is 0.5-48 hours, such as 0.5 hours, 1 hour, 3 hours, 5 hours, 8 hours, 10 hours, 12 hours, 15 hours, 18 hours Hours, 20 hours, 23 hours, 25 hours, 28 hours, 30 hours, 33 hours, 35 hours, 38 hours, 40 hours, 44 hours, or 48 hours.
  • the compound shown in formula IV is prepared by the following method: the compound shown in formula VI is reduced in the presence of a reducing agent to obtain the compound shown in formula IV, and the reaction formula is as follows:
  • R 1 , R 2 , R 3 , R 4 , R 5 , R 6 , and R 7 are as described above, and will not be repeated here.
  • the reducing agent is any one or a combination of at least two of hydrogen, hydrazine hydrate, iron powder, zinc powder, stannous chloride or sodium dithionite.
  • the reaction is carried out in the presence of a catalyst, and the catalyst is preferably any one of palladium carbon, palladium dioxide, Raney nickel, iron trichloride or basic iron oxide one or a combination of at least two.
  • the catalyst is preferably any one of palladium carbon, palladium dioxide, Raney nickel, iron trichloride or basic iron oxide one or a combination of at least two.
  • the solvent for the reaction is dichloromethane, chloroform, ethyl acetate, toluene, acetonitrile, tetrahydrofuran, dioxane, ethanol, methanol, N,N-dimethyl Any one or a combination of at least two of methyl formamide, saturated ammonium chloride aqueous solution, acetic acid, hydrochloric acid, water or dimethyl sulfoxide.
  • the reaction temperature is greater than or equal to 0°C and less than or equal to the boiling point of the reaction solvent, such as 0°C, 3°C, 5°C, 8°C, 10°C, 15°C, 20°C °C, 25°C, 30°C, 35°C, 40°C, 45°C, 50°C, 60°C, 70°C, 75°C, 80°C, 85°C, 90°C, etc., or react at the boiling point of the solvent, that is, under reflux.
  • the boiling point of the reaction solvent such as 0°C, 3°C, 5°C, 8°C, 10°C, 15°C, 20°C °C, 25°C, 30°C, 35°C, 40°C, 45°C, 50°C, 60°C, 70°C, 75°C, 80°C, 85°C, 90°C, etc.
  • the reaction time is 0.5-48 hours, such as 0.5 hours, 1 hour, 3 hours, 5 hours, 8 hours, 10 hours, 12 hours, 15 hours, 18 hours Hours, 20 hours, 23 hours, 25 hours, 28 hours, 30 hours, 33 hours, 35 hours, 38 hours, 40 hours, 44 hours, or 48 hours.
  • the compound shown in formula VI is prepared by the following method: the compound shown in formula VII is reacted with the compound shown in formula VIII to obtain the compound shown in formula VI, and the reaction formula is as follows:
  • L is fluorine or chlorine.
  • R 1 , R 2 , R 3 , R 4 , R 5 , R 6 , and R 7 are as described above and will not be repeated here.
  • the molar ratio of the compound shown in formula VII to the compound shown in formula VIII is 1-3:1, such as 1:1, 1.2:1, 1.5:1, 1.8:1, 2:1, 2.3:1, 2.5 :1, 2.8:1 or 3:1.
  • the reaction is carried out in the presence of a basic substance, and the basic substance is an organic base and/or an inorganic base.
  • the organic base is any one or a combination of at least two of triethylamine, N,N-dimethylaniline, pyridine, sodium methoxide, sodium ethoxide, sodium tert-butoxide or potassium tert-butoxide.
  • the inorganic base is any one or a combination of at least two of sodium hydroxide, potassium hydroxide, sodium carbonate, potassium carbonate or sodium hydride.
  • the solvent for the reaction is dichloromethane, chloroform, acetone, toluene, acetonitrile, tetrahydrofuran, dioxane, methanol, ethanol, N,N-dimethylform Any one or a combination of at least two of amide, dimethylsulfoxide or hexamethylphosphoric triamide.
  • the temperature of the reaction is greater than or equal to 0°C and less than or equal to the boiling point of the reaction solvent, such as 0°C, 20°C, 25°C, 30°C, 35°C, 40°C, 45°C °C, 50 °C, 60 °C, 70 °C, 75 °C, 80 °C, 85 °C, 90 °C, etc., or the reaction is carried out at the boiling point of the solvent, that is, under reflux.
  • the boiling point of the reaction solvent such as 0°C, 20°C, 25°C, 30°C, 35°C, 40°C, 45°C °C, 50 °C, 60 °C, 70 °C, 75 °C, 80 °C, 85 °C, 90 °C, etc.
  • the reaction time is 0.5-48 hours, such as 0.5 hours, 1 hour, 3 hours, 5 hours, 8 hours, 10 hours, 12 hours, 15 hours, 18 hours Hours, 20 hours, 23 hours, 25 hours, 28 hours, 30 hours, 33 hours, 35 hours, 38 hours, 40 hours, 44 hours, or 48 hours.
  • the present application provides the use of the above-mentioned pyrazole ether compounds in the prevention and treatment of plant diseases.
  • the pyrazole ether compound described in the application has unexpectedly high fungicidal activity and has a good control effect on plant diseases.
  • the plant diseases include Oomycetes, Ascomycetes, Basidiomycetes or Deuteromycetes diseases.
  • the plant diseases include, but are not limited to: wheat rust, wheat powdery mildew, wheat head blight, wheat root rot, wheat sheath blight, wheat take-all, wheat glume blight, cucumber downy mildew, cucumber Powdery mildew, melon powdery mildew, bitter melon powdery mildew, cucumber anthracnose, cucumber wilt, cucumber gray mold, grape downy mildew, tomato early blight, tomato late blight, rice sheath blight, rice blast, watermelon blight , Peanut scab, Peanut black spot, Citrus scab, Capsicum root rot, Cotton Verticillium wilt, Cotton wilt, Rapeseed black stem, Rapeseed sclerotinia, Pear scab, Ginseng rust rot, Corn rust , Corn Curvularia, Corn Spot, Mango Stem Rot, Apple Ringworm, Apple Rot, Banana Leaf Spot, Soybean
  • the plant diseases include wheat rust, wheat powdery mildew, wheat scab, cucumber powdery mildew, cucumber downy mildew or soybean rust.
  • the present application provides a fungicide composition, which includes an active component and a pesticide acceptable carrier, and the active component is the above-mentioned pyrazole ether compound.
  • the bactericide composition described in this application can be used in fields such as agriculture, forestry, and sanitation.
  • the weight percentage of the active ingredient is 1-99%, such as 1%, 3%, 5%, 8%, 10%, 15%, 18%, 20% , 25%, 30%, 35%, 40%, 45%, 50%, 55%, 60%, 65%, 70%, 75%, 80%, 85%, 90%, 95%, or 99%.
  • the pesticidally acceptable carrier includes a surfactant.
  • the surfactant is an ionic surfactant or a nonionic surfactant.
  • the surfactants include emulsifiers, dispersants or wetting agents.
  • Emulsifier can be polyoxyethylene fatty acid ester, polyoxyethylene fatty alcohol ether, polyoxyethylene fatty ammonia and commercially available emulsifier (Nong milk 2201B, Nong milk 0203B, Nong milk 100#, Nong milk 500#, Nong milk 600 #, Agricultural Milk 600-2#, Agricultural Milk 1601, Agricultural Milk 2201, Agricultural Milk NP-10, Agricultural Milk NP-15, Agricultural Milk 507#, Agricultural Milk OX-635, Agricultural Milk OX-622, Agricultural Milk OX- 653, Nongru OX-667, Ningru 36#).
  • Dispersants include sodium lignosulfonate, pull-off powder, calcium lignosulfonate, methylnaphthalenesulfonic acid formaldehyde condensate, etc.
  • Wetting agents include sodium lauryl sulfate, sodium dodecylbenzenesulfonate, sodium alkylnaphthalenesulfonate, and the like.
  • the pesticide acceptable carrier includes a solid carrier and/or a liquid carrier.
  • the solid carrier comprises natural or synthetic clays and silicates, such as natural silica and diatomaceous earth; magnesium silicates such as talc; magnesium aluminum silicates such as kaolinite, kaolin, montmorillonite and mica; White carbon black, calcium carbonate, light calcium carbonate; calcium sulfate; limestone; sodium sulfate; amine salts such as ammonium sulfate, hexamethylenediamine.
  • Liquid carriers include water and organic solvents. When water is used as a solvent or diluent, organic solvents can also be used as auxiliary agents or antifreeze additives.
  • Suitable organic solvents include aromatic hydrocarbons such as benzene, xylene, toluene, etc.; chlorinated hydrocarbons, such as chlorobenzene, vinyl chloride, chloroform, methylene chloride, etc.; aliphatic hydrocarbons, such as petroleum fractions, cyclohexane, light minerals oils; alcohols such as isopropanol, butanol, ethylene glycol, glycerol, and cyclohexanol; and their ethers and esters; and ketones such as acetone, cyclohexanone, and dimethylformamide and N-methyl-pyrrolidone.
  • aromatic hydrocarbons such as benzene, xylene, toluene, etc.
  • chlorinated hydrocarbons such as chlorobenzene, vinyl chloride, chloroform, methylene chloride, etc.
  • aliphatic hydrocarbons such as petroleum fractions, cyclohexane, light minerals oils
  • the active components can be mixed with the liquid carrier and/or solid carrier, while adding surfactants (such as emulsifiers, dispersants, stabilizers, wetting agents), and other auxiliary agents can also be added (such as adhesives, defoamers, oxidizing agents, etc.).
  • surfactants such as emulsifiers, dispersants, stabilizers, wetting agents
  • auxiliary agents such as adhesives, defoamers, oxidizing agents, etc.
  • the present application provides a method for controlling plant diseases, the method comprising: applying an effective dose of the above-mentioned fungicide composition to the plant disease to be controlled or the growth medium thereof.
  • the effective dose is 10-1000g per hectare, such as 10g, 20g, 50g, 80g, 100g, 120g, 150g, 180g, 200g, 250g, 300g, 350g, 400g, 450g, 500g, 600g, 700g, 800g , 900g or 1000g, preferably 20-500g per hectare.
  • compositions of the present application may be applied to the disease or its growth medium in the form of a formulation.
  • the compound of general formula I is dissolved or dispersed in the carrier as an active component or formulated into a preparation so that it is easier to disperse when used as a fungicide.
  • these chemical preparations can be formulated into various liquids, emulsifiable concentrates, suspensions, aqueous suspensions, microemulsions, emulsions, emulsions in water, powders, wettable powders, soluble powders, granules, water-dispersible granules or capsules agent.
  • one or more other fungicides, insecticides, herbicides, plant growth regulators or fertilizers, etc. can be added in the fungicidal composition of the present application in agriculture, which can produce additional advantages and effects.
  • the pyrazole ether compounds having the structure shown in formula I in the examples of the present application have significant effects on the prevention and control of diseases in agriculture and forestry, especially for cucumber powdery mildew, cucumber downy mildew, soybean rust, and wheat head blight.
  • Control effect when the concentration of pyrazole ether compounds is 10ppm, the control effect on cucumber powdery mildew is ⁇ 90%, and when the concentration of pyrazole ether compounds is 10ppm, the control effect on cucumber downy mildew is ⁇ 90%;
  • the control effect of rust is more than 90%; when the concentration of pyrazole ether compounds is 100ppm, the inhibition rate of germination of wheat scab spores is more than 90%, and the preparation method is simple and efficient, easy for large-scale production, and has wide application prospects.
  • Step 5 Synthesis of (E)-N-(4-((1-phenyl-1H-pyrazol-3-yl)oxy)-2,5-dimethylphenyl)formamidine ethyl ether:
  • Step 6 (E)-N'-(4-((1-Phenyl-1H-pyrazol-3-yl)oxy)-2,5-dimethylphenyl)-N-ethyl-N -Synthesis of methyl formamidine:
  • Step 4 Synthesis of 2,5-dimethyl-4-((1-(4-fluorophenyl)-1H-pyrazol-3-yl)oxy)aniline:
  • Step 6 E)-N'-(4-((1-(4-fluorophenyl)-1H-pyrazol-3-yl)oxy)-2,5-dimethylphenyl)-N- Synthesis of ethyl-N-methylformamidine:
  • Step 1 Synthesis of 1-(4-chlorophenyl)-3-(2,5-dimethyl-4-nitrophenoxy)-1H-pyrazole:
  • Step 4 E)-N'-(4-((1-(4-chlorophenyl)-1H-pyrazol-3-yl)oxy)-2,5-dimethylphenyl)-N- Synthesis of ethyl-N-methylformamidine:
  • 3,4-Dichlorophenylhydrazine hydrochloride (10g, 60.39mmol) was dissolved in 50ml of ethanol, the temperature was raised to 40°C, sodium methoxide (9.8g, 181.17mmol) was added, the solution changed from light yellow turbidity to purple red, After 30 minutes, methyl acrylate (7.8g, 90.59mmol) was added dropwise, and the temperature was raised to reflux reaction.
  • Step 4 Synthesis of 2,5-dimethyl-4-((1-(3,4-dichlorophenyl)-1H-pyrazol-3-yl)oxy)aniline:
  • Step 6 (E)-N'-(4-((1-(3,4-dichlorophenyl)-1H-pyrazol-3-yl)oxy)-2,5-dimethylphenyl )-N-ethyl-N-methyl formamidine synthesis:
  • 4-cyanophenylhydrazine hydrochloride (15g, 88.44mmol) was added to 50ml of tetrahydrofuran, methyl acrylate (6.45g, 73.41mmol) was added, potassium tert-butoxide (16.47g, 146.82mmol) was added, and the solution changed from light The yellow turbidity turned into orange, and the temperature was raised to reflux for reaction.
  • Step 4 Synthesis of 2,5-dimethyl-4-((1-(4-cyanophenyl)-1H-pyrazol-3-yl)oxy)aniline:
  • Step 6 E)-N'-(4-((1-(4-cyanophenyl)-1H-pyrazol-3-yl)oxy)-2,5-dimethylphenyl)-N -Synthesis of Propylformamidine:
  • Step 4 Synthesis of 2,5-dimethyl-4-((1-(4-methoxyphenyl)-1H-pyrazol-3-yl)oxy)aniline:
  • Step 6 E)-N'-(4-((1-(4-methoxyphenyl)-1H-pyrazol-3-yl)oxy)-2,5-dimethylphenyl)- Synthesis of N-methyl-N-ethylformamidine:
  • the fungicide preparation was prepared from the prepared pyrazole ether compounds, and the compound 2 was formulated according to the mass ratio to obtain a suspension concentrate with a concentration of 30%.
  • the preparation method is as follows: fully mix compound 2 and other components to obtain a 30% suspension concentrate. And diluting the resulting suspension with water can give a dilution of the desired concentration.
  • the sample preparation method is to take 10 mg of the original drug of the sample to be tested, dissolve it with 1 mL DMF, and prepare a 10000 ppm mother solution, and dilute the mother solution to the required concentration with 0.05% Tween-80 water. Activity test.
  • test embodiment 1 The bactericidal activity of test embodiment 1 compound to cucumber powdery mildew
  • the effect of the prepared pyrazole ether compounds on the prevention and treatment of cucumber powdery mildew is determined, the method is as follows:
  • Screening adopts the living potted assay method, that is, the sample of the compound to be tested is mixed with a small amount of solvent (the type of solvent such as acetone, methanol, DMF, etc., is selected according to its dissolving ability for the sample, and the volume ratio of the amount of solvent to the amount of spray liquid is equal to or less than 0.05 ) was dissolved, diluted with water containing 0.1% Tween 80, and prepared into a test solution of required concentration.
  • the two-leaf cucumber seedlings cultivated in the greenhouse were used as experimental host plants for cucumber powdery mildew (Erysiphe cichoracearum). Carry out foliar spray treatment with the application compound according to the designed concentration.
  • a blank control sprayed with water was set up, repeated 3 times, and the bacteria were inoculated 24 hours after the treatment.
  • the plants were placed in an artificial climate chamber for moisturizing cultivation (temperature: 25° C. during the day, 20° C. at night, relative humidity: 95-99%).
  • the test materials were cultivated for 24 hours, they were transferred to the greenhouse for cultivation.
  • the control is fully onset (usually within a week), the disease prevention effect of the compound is evaluated.
  • the results of the investigation were represented by a scale of 100 to 0, with "100" representing no disease and "0" representing the most severe disease.
  • Test embodiment 2 compound is to the bactericidal activity of cucumber downy mildew
  • Screening adopts the living potted assay method, that is, the sample of the compound to be tested is mixed with a small amount of solvent (the type of solvent such as acetone, methanol, DMF, etc., is selected according to its dissolving ability for the sample, and the volume ratio of the amount of solvent to the amount of spray liquid is equal to or less than 0.05 ) was dissolved, diluted with water containing 0.1% Tween 80, and prepared into a test solution of required concentration.
  • Cucumber seedlings at the two-leaf stage cultivated in the greenhouse were used as experimental host plants for cucumber downy mildew (Pseudoperonospora cubensis). Carry out foliar spray treatment with the application compound according to the designed concentration.
  • Test embodiment 3 compound is to the bactericidal activity of soybean rust
  • the effect of the prepared pyrazole ether compounds on the prevention and treatment of soybean rust is determined, the method is as follows:
  • Screening adopts the living potted assay method, that is, the sample of the compound to be tested is mixed with a small amount of solvent (the type of solvent such as acetone, methanol, DMF, etc., is selected according to its dissolving ability for the sample, and the volume ratio of the amount of solvent to the amount of spray liquid is equal to or less than 0.05 ) was dissolved, diluted with water containing 0.1% Tween 80, and prepared into a test solution of required concentration. Soybean at the two-leaf stage was cultivated in the greenhouse as an experimental host plant for soybean rust (Phakopsora pachyrhizi). Carry out foliar spray treatment with the application compound according to the designed concentration.
  • solvent the type of solvent such as acetone, methanol, DMF, etc.
  • test embodiment 4 compound to wheat head blight spore germination
  • the spore germination method is used to test, and an appropriate amount of mother liquor is prepared to make a 1% water agar (WA) drug-containing plate.
  • WA water agar
  • the germination of spores in each treatment was observed under a microscope at 10 times, and the number of ungerminated spores and the total number of spores were recorded, and the inhibition rate of spore germination was calculated.
  • the present application illustrates the pyrazole ether compounds of the present application and their preparation methods and applications through the above examples, but the application is not limited to the above examples, that is, it does not mean that the application must rely on the above examples to be implemented.
  • Those skilled in the art should understand that any improvement to the present application, the equivalent replacement of each raw material of the product of the present application, the addition of auxiliary components, the selection of specific methods, etc., all fall within the scope of protection and disclosure of the present application.

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Abstract

涉及一种吡唑醚类化合物及其制备方法和应用,所述化合物具有式I所示结构,其对于防治农业、林业上的病害具有显著效果,尤其对黄瓜白粉病、黄瓜霜霉病、大豆锈病、小麦赤霉病具有很好的防治效果,应用前景广泛。

Description

一种吡唑醚类化合物及其制备方法和应用 技术领域
本申请涉及农用杀菌剂领域,例如一种吡唑醚类化合物及其制备方法和应用。
背景技术
植物的生长严重受到植物病害的影响,导致农作物以及经济作物的减产,造成经济损失,因此针对植物病害开发有效的抗菌剂具有重要的意义。
酰胺类杀菌剂是一类常用的杀菌剂,数量在杀菌剂中占有相当大的比例,以其高效的生物活性而受到关注,然而这类杀菌剂在使用一段时间后,病害会对其产生抗性,因此,需要不断发明新型的和改进的具有杀菌活性的化合物和组合物。
现有技术中已经报道了一些吡唑醚类化合物,例如CN101631460A公开了KC1、KC2、KC2(分别为专利中化合物595、596和599),这些公开的化合物具有除草活性,但未报道吡唑醚类化合物杀菌活性。
Figure PCTCN2022105331-appb-000001
因此,在本领域中,开发出更加高效的杀菌剂以满足农业以及林木业需求仍然是被期望的。
发明内容
以下是对本文详细描述的主题的概述。本概述并非是为了限制权利要求的保护范围。
本申请提供一种吡唑醚类化合物及其制备方法和应用。
一方面,本申请提供一种吡唑醚类化合物,所述吡唑醚类化合物具有式I所示结构:
Figure PCTCN2022105331-appb-000002
其中,
R 1选自至少被1个R 10取代的苯基、吡啶基、嘧啶基、吡唑基、噻唑基、噁唑基、异噁唑基;
R 2和R 3分别独立的选自氢、卤素、C1-C6烷基、C1-C6卤代烷基、C1-C6烷氧基、C1-C6卤代烷氧基;
R 4选自C1-C6烷基、C1-C6烷氧基、C1-C6卤代烷基、C1-C6卤代烷氧基;
R 5选自氢、甲基;
R 6选自氢、卤素、C1-C6烷基或C1-C6卤代烷基;
R 7选自氢、甲基;
R 8选自氢、C1-C6烷基;
R 9选自C1-C8烷基、羟基C1-C6烷基、C1-C6环烷基、C1-C6环烷基C1-C6烷基;或
R 8和R 9连同它们所连接的氮原子一起形成三元至六元饱和的环状集团,该环状基团可以任选地含有一个氧原子或一个硫原子;
R 10选自氢、卤素、氰基、硝基、羟基、氨基、C1-C6烷基、C1-C6卤代烷基、C1-C6烷氧基、C1-C6卤代烷氧基、被C1-C6烷基取代的氨基、C1-C6烷基羰基氨基、C1-C6烷基亚砜基、C1-C6烷基砜基、C1-C6卤代烷基亚砜基、C1-C6卤代烷基砜基。
优选地,所述吡唑醚类化合物具有式II所示结构:
Figure PCTCN2022105331-appb-000003
R 2和R 3分别独立的选自氢、氟、氯、溴、碘、甲基、二氟甲基、三氟甲基、甲氧基、三氟甲氧基、二氟甲氧基;
R 4选自甲基、二氟甲基、三氟甲基、甲氧基、二氟甲氧基、三氟甲氧基;
R 5选自氢、甲基;
R 6选自氢、氟、氯、溴、碘、甲基、二氟甲基、三氟甲基;
R 7选自氢、甲基;
R 8选自氢、甲基、乙基、正丙基、异丙基、正丁基、异丁基、叔丁基、正戊基、2-戊基、新戊基、异戊基、4-甲基-2-戊基、正己基;
R 9选自甲基、乙基、羟基乙基、正丙基、异丙基、1-甲基丙基、1-乙基丙基、2-甲基丙基、3-甲基丙基、1,1-二甲基丙基、2,2-二甲基丙基、正丁基、叔丁基、3-甲基丁基、1,1-二甲基-3,3-二甲基丁基、正戊基、4-甲基-2-戊基、1-甲基戊基、2-甲基戊基、3-甲基戊基、4-甲基戊基、正己基、2-乙基己基、环丙基、环丁基、环戊基、环己基、环丙基甲基;或
R 8和R 9连同它们所连接的氮原子一起形成吡咯、哌啶或吗啉;
R 10选自氢、氟、氯、溴、碘、氰基、硝基、羟基、氨基、甲基、乙基、正丙基、异丙基、正丁基、异丁基、叔丁基、二氟甲基、三氟甲基、五氟乙基、七氟异丙基、甲氧基、二氟甲氧基、三氟甲氧基、甲氨基、乙酰氨基、甲磺酰基、三氟甲磺酰基;
n表示0~5的整数(例如,0,1,2,3,4,5)。
作为本申请的优选技术方案,所述吡唑醚类化合物为具有通式I的如下表1所示化合物中的任意一种,其中R 2、R 3选自氢:
Figure PCTCN2022105331-appb-000004
表1
Figure PCTCN2022105331-appb-000005
Figure PCTCN2022105331-appb-000006
Figure PCTCN2022105331-appb-000007
Figure PCTCN2022105331-appb-000008
Figure PCTCN2022105331-appb-000009
Figure PCTCN2022105331-appb-000010
进一步优选地,在式II中,R 2和R 3选自氢;
R 4选自甲基;
R 5选自氢;
R 6选自氢、甲基;
R 7选自氢;
R 8选自氢、甲基;
R 9选自甲基、乙基、羟基乙基、正丙基、异丙基、1-甲基丙基、1-乙基丙基、2-甲基丙基、3-甲基丙基、1,1-二甲基丙基、2,2-二甲基丙基、正丁基、叔丁基、3-甲基丁基、1,1-二甲基-3,3-二甲基丁基、正戊基、4-甲基-2-戊基、1-甲基戊基、2-甲基戊基、3-甲基戊基、4-甲基戊基、正己基、2-乙基己基;或
R 8和R 9连同它们所连接的氮原子一起形成吡咯、哌啶或吗啉;
R 10选自氢、氟、氯、氰基、甲氧基、三氟甲基;
n表示0、1或2。
最优选地,所述吡唑醚类化合物为如下化合物中的任意一种:
Figure PCTCN2022105331-appb-000011
Figure PCTCN2022105331-appb-000012
Figure PCTCN2022105331-appb-000013
本申请中所述烷基是指直链或支链形式,例如甲基、乙基、正丙基、异丙基、正丁基、异丁基、仲丁基、特丁基、正戊基、异戊基、正己基等基团。卤代烷基是指烷基被一个或多个卤原子取代的基团。烷氧基是指烷基末端连有氧原子的基团,例如甲氧基、乙氧基、正丙氧基、异丙氧基、特丁氧基等。卤代烷氧基是指烷氧基被一个或多个卤原子取代的基团。卤素为F、Cl、Br或I。
本申请所用术语“C1-C6烷基”是指具有1至6个碳原子的直链或支链烷基,非限制性地包括甲基、乙基、正丙基、异丙基、正丁基、异丁基、仲丁基、特丁基、正戊基、异戊基、正己基等。术语“C1-C6烷氧基”是指具有1至6个碳原子的直链或支链烷氧基,非限制性地包括甲氧基、乙氧基、正丙氧基、异丙氧基和特丁氧基等。术语“C1-C12烷氧基”具有类似的含义。
本申请所用术语“C3-C8环烷基”是指在环上具有3至8个碳原子的环状烷基,非限制性地包括环丙基、环丁基、环戊基、环己基、环庚基、环辛基等。
在本申请中,所述特定基团之前的C2-C12、C1-C6、C3-C8等表示基团中所含碳原子个数,例如C2-C12表示碳原子数可以为2、3、4、5、6、7、8、9、10、11或12的基团,C1-C6表示碳原子数可以为1、2、3、4、5或6的基团,C3-C8表示碳原子数可以为3、4、5、6、7或8的基团,C2-C4表示碳原子数可以为2、3或4的基团等等,以此类推。
在本申请中基团中
Figure PCTCN2022105331-appb-000014
代表基团的连接位置。
另一方面,本申请提供了如上所述的吡唑醚类化合物的制备方法,所述制备方法为:
将式II所示化合物与式III所示化合物反应得到式I所示吡唑醚类化合物,反应式如下:
Figure PCTCN2022105331-appb-000015
R 1、R 2、R 3、R 4、R 5、R 6、R 7、R 8、R 9的限定如上文所述,在此不再赘述。R 11选自C1-C6烷基。
优选地,所述式II所示化合物与式III所示化合物的摩尔比为0.5-2:1,例如0.5:1、0.8:1、1:1、1.2:1、1.5:1、1.8:1或2:1。
优选地,所述反应的溶剂为二氯甲烷、氯仿、乙酸乙酯、甲苯、乙腈、四氢呋喃、二氧六环、乙醇、甲醇、N,N-二甲基甲酰胺或二甲基亚砜等中的任意一种或至少两种的组合。
优选地,所述反应的温度为大于等于室温小于等于反应溶剂的沸点,例如20℃、25℃、30℃、35℃、40℃、45℃、50℃、60℃、70℃、75℃、80℃、85℃、90℃等,或者在溶剂沸点即回流状态下进行反应。
优选地,所述反应的时间为0.5-48小时,例如0.5小时、1小时、3小时、5小时、8小时、10小时、12小时、15小时、18小时、20小时、23小时、25小时、28小时、30小时、33小时、35小时、38小时、40小时、44小时或48小时。
优选地,式III所示化合物通过以下方法制备得到:式IV所示化合物与式V化合物在催化剂存在下反应得到式III所示化合物,反应式如下:
Figure PCTCN2022105331-appb-000016
其中R 1、R 2、R 3、R 4、R 5、R 6、R 7、R 11的限定如上文所述,在此不再赘述。
优选地,在式III所示化合物的制备中,所述反应在酸性物质存在下进行,所述酸性物质为有机酸和/或无机酸。
所述有机酸为对甲苯磺酸、甲磺酸、三氟乙酸、乙酸中的任意一种或至少两种的组合。
所述有机酸为盐酸、氢溴酸、硫酸、氯化锌、氯化铵、三氯化铁中的任意一种或至少两种的组合。
优选地,在式III所示化合物的制备中,可以不加溶剂。
优选地,在式III所示化合物的制备中,反应可以在合适的溶剂中进行,所述反应的溶剂为二氯甲烷、 氯仿、乙酸乙酯、甲苯、乙腈、四氢呋喃、1,4二氧六环、甲醇、乙醇、异丙醇、正丁醇、水、N,N-二甲基甲酰胺或二甲基亚砜中的任意一种或至少两种的组合。
优选地,在式III所示化合物的制备中,所述反应的温度为大于等于0℃小于等于反应溶剂的沸点,例如0℃、3℃、5℃、8℃、10℃、15℃、20℃、25℃、30℃、35℃、40℃、45℃、50℃、60℃、70℃、75℃、80℃、85℃、90℃等,或者在溶剂沸点即回流状态下进行反应。
优选地,在式III所示化合物的制备中,所述反应的时间为0.5-48小时,例如0.5小时、1小时、3小时、5小时、8小时、10小时、12小时、15小时、18小时、20小时、23小时、25小时、28小时、30小时、33小时、35小时、38小时、40小时、44小时或48小时。
优选地,式IV所示化合物通过以下方法制备得到:式VI所示化合物在还原剂存在下还原得到式IV所示化合物,反应式如下:
Figure PCTCN2022105331-appb-000017
其中R 1、R 2、R 3、R 4、R 5、R 6、R 7的限定如上文所述,在此不再赘述。
优选地,在式IV所示化合物的制备中,所述还原剂为氢气、水合肼、铁粉、锌粉、氯化亚锡或连二亚硫酸钠中的任意一种或至少两种的组合。
优选地,在式IV所示化合物的制备中,所述反应在催化剂存在下进行,所述催化剂优选钯碳、二氧化钯、兰尼镍、三氯化铁或碱式氧化铁中的任意一种或至少两种的组合。
优选地,在式IV所示化合物的制备中,所述反应的溶剂为二氯甲烷、氯仿、乙酸乙酯、甲苯、乙腈、四氢呋喃、二氧六环、乙醇、甲醇、N,N-二甲基甲酰胺、饱和氯化铵水溶液、乙酸、盐酸、水或二甲基亚砜中的任意一种或至少两种的组合。
优选地,在式IV所示化合物的制备中,所述反应的温度为大于等于0℃小于等于反应溶剂的沸点,例如0℃、3℃、5℃、8℃、10℃、15℃、20℃、25℃、30℃、35℃、40℃、45℃、50℃、60℃、70℃、75℃、80℃、85℃、90℃等,或者在溶剂沸点即回流状态下进行反应。
优选地,在式IV所示化合物的制备中,所述反应的时间为0.5-48小时,例如0.5小时、1小时、3小时、5小时、8小时、10小时、12小时、15小时、18小时、20小时、23小时、25小时、28小时、30小时、33小时、35小时、38小时、40小时、44小时或48小时。
优选地,式VI所示化合物通过以下方法制备得到:式VII所示化合物与式VIII所示化合物反应得到式VI所示化合物,反应式如下:
Figure PCTCN2022105331-appb-000018
其中L为氟或氯,此外,其中R 1、R 2、R 3、R 4、R 5、R 6、R 7的限定如上文所述,在此不再赘述。
优选地,式VII所示化合物与式VIII所示化合物的摩尔比为1-3:1,例如1:1、1.2:1、1.5:1、1.8:1、2:1、2.3:1、2.5:1、2.8:1或3:1。
优选地,在式VI所示化合物的制备中,所述反应在碱性物质存在下进行,所述碱性物质为有机碱和/或无机碱。
优选地,所述有机碱为三乙胺、N,N-二甲基苯胺、吡啶、甲醇钠、乙醇钠、叔丁醇钠或叔丁醇钾中的任意一种或至少两种的组合。
优选地,所述无机碱为氢氧化钠、氢氧化钾、碳酸钠、碳酸钾或氢化钠中的任意一种或至少两种的组合。
优选地,在式VI所示化合物的制备中,所述反应的溶剂为二氯甲烷、氯仿、丙酮、甲苯、乙腈、四 氢呋喃、二氧六环、甲醇、乙醇、N,N-二甲基甲酰胺、二甲基亚砜或六甲基磷酰三胺中的任意一种或至少两种的组合。
优选地,在式VI所示化合物的制备中,所述反应的温度为大于等于0℃小于等于反应溶剂的沸点,例如0℃,20℃、25℃、30℃、35℃、40℃、45℃、50℃、60℃、70℃、75℃、80℃、85℃、90℃等,或者在溶剂沸点即回流状态下进行反应。
优选地,在式VI所示化合物的制备中,所述反应的时间为0.5-48小时,例如0.5小时、1小时、3小时、5小时、8小时、10小时、12小时、15小时、18小时、20小时、23小时、25小时、28小时、30小时、33小时、35小时、38小时、40小时、44小时或48小时。
在本申请中,所用原料式VIII化合物中部分化合物为市售试剂,部分化合物可以参照文献合成,如Green Chemistry(2020),22(8),2388-2393;Molecules(2014),19(6),8140-8150;Chemistry-A European Journal(2010),16(15),4669-4677。
在本申请中,在表2中示出了本申请化合物的式VI所述中间体化合物的代表性化合物,但本申请并不限定于此。
Figure PCTCN2022105331-appb-000019
表2
Figure PCTCN2022105331-appb-000020
Figure PCTCN2022105331-appb-000021
在本申请中,在表3中示出了本申请化合物的式IV所述中间体化合物的代表性化合物,但本申请并不限定于此。
表3
Figure PCTCN2022105331-appb-000022
Figure PCTCN2022105331-appb-000023
Figure PCTCN2022105331-appb-000024
另一方面,本申请提供了如上所述的吡唑醚类化合物在防治植物病害中的应用。
本申请所述的吡唑醚类化合物具有意想不到的高杀菌活性,对植物病害具有很好的控制效果。
在本申请中,所述植物病害包括卵菌纲(Oomycetes)、子囊菌纲(Ascomycetes)、担子菌纲(Basidiomycetes)或半知菌纲(Deuteromycetes)病害。
优选地,所述植物病害包括但不限于:小麦锈病、小麦白粉病、小麦赤霉病、小麦根腐病、小麦纹枯病、小麦全蚀病、小麦颖枯病、黄瓜霜霉病、黄瓜白粉病、甜瓜白粉病、苦瓜白粉病、黄瓜炭疽病、黄瓜枯萎病、黄瓜灰霉病、葡萄霜霉病、番茄早疫病、番茄晚疫病、水稻纹枯病、水稻稻瘟病、西瓜蔓枯病、花生疮痂病、花生黑斑病、柑橘疮痂病、辣椒根腐病、棉花黄萎病、棉花枯萎病、油菜黑茎病、油菜菌核病、梨黑星病、人参锈腐病、玉米锈病、玉米弯孢病、玉米大斑病、芒果蒂腐病、苹果轮纹病、苹果腐菌烂病、香蕉叶斑病、大豆锈病或马铃薯晚疫病。
优选地,所述植物病害包括小麦锈病、小麦白粉病、小麦赤霉病、黄瓜白粉病、黄瓜霜霉病或大豆锈病。
另一方面,本申请提供了一种杀菌剂组合物,所述杀菌剂组合物包括活性组分和农药学上可接受的载体,所述活性组分为如上所述的吡唑醚类化合物。
本申请所述杀菌剂组合物可以用于农业、林业、卫生等领域。
优选地,所述杀菌剂组合物中,所述活性成分的重量百分含量为1-99%,例如1%、3%、5%、8%、10%、15%、18%、20%、25%、30%、35%、40%、45%、50%、55%、60%、65%、70%、75%、80%、85%、90%、95%或99%。
优选地,所述农药学上可接受的载体包括表面活性剂。
在本申请中,所述表面活性剂为离子型表面活性剂或非离子型表面活性剂。
所述表面活性剂包括乳化剂、分散剂或湿润剂。乳化剂可以为聚氧乙烯脂肪酸脂、聚氧乙烯脂肪醇醚、聚氧乙烯脂肪氨以及市售的乳化剂(农乳2201B、农乳0203B、农乳100#、农乳500#、农乳600#、农乳600-2#、农乳1601、农乳2201、农乳NP-10、农乳NP-15、农乳507#、农乳OX-635、农乳OX-622、农乳OX-653、农乳OX-667、宁乳36#)。分散剂包括木质素磺酸钠、拉开粉、木质素磺酸钙、甲基萘磺酸甲醛缩合物等。湿润剂包括月桂醇硫酸钠、十二烷基苯磺酸钠、烷基萘磺酸钠等。
优选地,所述农药学上可接受的载体包括固体载体和/或液体载体。
优选地,所述固体载体包括天然的或合成的粘土和硅酸盐,例如天然硅石和硅藻土;硅酸镁例如滑石;硅酸铝镁例如高岭石、高岭土、蒙脱土和云母;白碳黑、碳酸钙、轻质碳酸钙;硫酸钙;石灰石;硫酸钠;胺盐如硫酸铵、六甲撑二胺。液体载体包括水和有机溶剂,当用水做溶剂或稀释剂时,有机溶剂也能用做辅助剂或防冻添加剂。合适的有机溶剂包括芳烃例如苯、二甲苯、甲苯等;氯代烃,例如氯代苯、氯乙烯、三氯甲烷、二氯甲烷等;脂肪烃,例如石油馏分、环己烷、轻质矿物油;醇类,例如异丙醇、丁醇、乙二醇、丙三醇和环己醇等;以及它们的醚和酯;还有酮类,例如丙酮、环己酮以及二甲基甲酰胺和N-甲基-吡咯烷酮。
在杀菌剂组合物的配制过程中可以将活性组分与液体载体和/或固体载体混合,同时加入表面活性剂(如乳化剂、分散剂、稳定剂、湿润剂),还可以加入其它助剂(如粘合剂、消泡剂、氧化剂等)。
另一方面,本申请提供一种防治植物病害的方法,所述方法为:向需要控制的植物病害或其生长的介质上施用有效剂量的如上所述的杀菌剂组合物。
优选地,所述有效剂量为每公顷10-1000g,例如10g、20g、50g、80g、100g、120g、150g、180g、200g、250g、300g、350g、400g、450g、500g、600g、700g、800g、900g或1000g,优选每公顷20-500g。
本申请的组合物可以制剂的形式施用在病害或其生长介质上。通式化合物I作为活性组分溶解或分散 于载体中或配制成制剂以便作为杀菌剂使用时更易于分散。例如:这些化学制剂可被配制成各种液剂、乳油、悬浮剂、水悬剂、微乳剂、乳剂、水乳剂、粉剂、可湿性粉剂、可溶性粉剂、颗粒剂、水分散型颗粒剂或胶囊剂。
对于某些应用,例如在农业上可在本申请的杀菌组合物中加入一种或多种其它的杀菌剂、杀虫剂、除草剂、植物生长调节剂或肥料等,由此可产生附加的优点和效果。
相对于相关技术,本申请实施例具有以下有益效果:
本申请实施例的具有式I所示结构的吡唑醚类化合物对于防治农业、林业上病害具有显著效果,尤其对黄瓜白粉病、黄瓜霜霉病、大豆锈病、小麦赤霉病具有很好的防治效果,在吡唑醚类化合物浓度为10ppm时对黄瓜白粉病的防治效果≥90%,100ppm时对黄瓜霜霉病的防治效果≥90%;在吡唑醚类化合物浓度为10ppm时对大豆锈病的防治效果≥90%;在吡唑醚类化合物浓度为100ppm时对小麦赤霉病孢子萌发的抑制率≥90%,并且其制备方法简单高效、易于规模化生产,应用前景广泛。
在阅读并理解了详细描述后,可以明白其他方面。
具体实施方式
下面通过具体实施方式来进一步说明本申请的技术方案。本领域技术人员应该明了,所述实施例仅仅是帮助理解本申请,不应视为对本申请的具体限制。如无特别说明实施例和本申请中:对化合物进行核磁氢谱测试表征时相应样品都溶于氘代二甲基亚砜(DMSO-d 6)或氘代氯仿(CDCl 3)中,用400MHz核磁共振仪测试得到氢谱数据,化学位移单位为ppm(即δ:ppm);柱色谱提纯用淋洗液为按照所示石油醚(简称PE):乙酸乙酯(简称EA)体积比配置而成。
合成实施例
实施例1
(E)-N'-(4-((1-苯基-1H-吡唑-3-基)氧基)-2,5-二甲基苯基)-N-乙基-N-甲基甲脒(化合物2)的制备:
Figure PCTCN2022105331-appb-000025
步骤1:1-苯基-吡唑啉-3-酮的合成:
苯肼(10g,92.5mmol)溶于50毫升乙醇中,升温至40℃,加入甲醇钠(14.99克,277.5mmol),30分钟后加入丙烯酸甲酯(11.9g,138.7mmol),升温至回流反应,TLC显示反应完全后反应液冷却至室温,用乙酸将反应液pH值调至5-6,加入100毫升乙酸乙酯100毫升水,分液萃取,取有机层,饱和氯化钠水洗,无水硫酸钠干燥,减压下浓缩,残余物经柱色谱提纯(淋洗液为PE:EA=2:1),得6.9克淡黄色固体,收率46.2%。
步骤2:1-苯基-1H-吡唑-3-醇的合成:
1-苯基-吡唑啉-3-酮(5.8g,35.8mmol)溶于20毫升5%氢氧化钾水溶液中,加入6水合三氯化铁(1.94g,7.2mmol),通入氧气,80℃下反应,6小时后TLC显示反应完毕,反应液冷却至室温,用10%盐酸将反应液pH值调至1-2,50毫升乙酸乙酯萃取,有机层用饱和氯化钠水溶液洗,取有机层,无水硫酸钠干燥,减压下浓缩,残余物经柱色谱提纯(淋洗液为PE:EA=2:1),得3.4克淡黄色固体,收率59.3%。
步骤3:1-(4-苯基-3-(2,5-二甲基-4-硝基苯氧基)-1H-吡唑的合成:
1-氯-2,5-二甲基-4-硝基苯(3.3g,17.8mmol)和碳酸钾(3.0g,18.7mmol)加入到20毫升DMF中,升温至回流,加入1-苯基-1H-吡唑-3-醇(2.46g,17.8mmol),回流反应,15小时后反应液冷却至室温,加入100毫升水和50毫升乙酸乙酯,分液萃取,取有机层,饱和氯化钠水洗,无水硫酸钠干燥,减压下浓缩,残余物经柱色谱提纯(淋洗液为PE:EA=4:1),得2.4克淡黄色固体,收率43.6%。
步骤4:2,5-二甲基-4-((1-苯基-1H-吡唑-3-基)氧基)苯胺的合成:
1-(4-苯基-3-(2,5-二甲基-4-硝基苯氧基)-1H-吡唑(1.9g,6.1mmol)和10%钯碳(188mg)加入到15毫升乙醇中,滴加水合肼(3.0g,40%,24.3mmol),滴毕,室温下搅拌,1小时后反应完毕,抽滤,加入50毫升水和20毫升乙酸乙酯,分液萃取,取有机层,饱和氯化钠水洗,无水硫酸钠干燥,减压下浓缩,残 余物经柱色谱提纯(淋洗液为PE:EA=4:1),得1.1克黄色固体,收率64.5%。
步骤5:(E)-N-(4-((1-苯基-1H-吡唑-3-基)氧基)-2,5-二甲基苯基)甲脒乙醚的合成:
2,5-二甲基-4-((1-苯基-1H-吡唑-3-基)氧基)苯胺(1.1g,3.9mmol)、原甲酸三乙酯(5.8g,39.2mmol)和对甲苯磺酸一水合物(75mg,0.39mmol)加入到反应瓶中,升温至回流反应8小时,反应液冷却至室温,加压蒸馏至无液滴滴下,得棕色油状物,不经分离,直接进行下一步。
步骤6:(E)-N'-(4-((1-苯基-1H-吡唑-3-基)氧基)-2,5-二甲基苯基)-N-乙基-N-甲基甲脒的合成:
(E)-N-(4-((1-苯基-1H-吡唑-3-基)氧基)-2,5-二甲基苯基)甲脒乙醚(670mg,2.0mmol)溶于10毫升二氯甲烷中,加入甲乙胺(472mg,8.0mmol),升温至回流反应,2小时后反应完毕,反应液冷却至室温,加入20毫升水,分液萃取,取有机层,饱和氯化钠水洗,无水硫酸钠干燥,减压下浓缩,残余物经柱色谱提纯(淋洗液为PE:EA=2:1),得429毫克浅褐色油,收率61.6%。
化合物2的1H NMR(DMSO-d6,δ[ppm]):8.38(d,J=2.8Hz,1H),7.72(d,J=8.0Hz,2H),7.65(s,1H),7.45(t,J=7.8Hz,2H),7.24(t,J=7.4Hz,1H),6.86(s,1H),6.69(s,1H),5.90(d,J=2.6Hz,1H),3.35(s,2H),2.93(s,3H),2.14(d,J=7.3Hz,6H),1.13(t,J=7.1Hz,3H).
实施例2
(E)-N'-(4-((1-(4-氟苯基)-1H-吡唑-3-基)氧基)-2,5-二甲基苯基)-N-乙基-N-甲基甲脒(化合物5)的制备:
Figure PCTCN2022105331-appb-000026
步骤1:1-(4-氟苯基)-1H-吡唑-3-醇的合成:
4-氟苯肼(10g,61.5mmol)溶于50毫升乙醇中,升温至40℃,加入甲醇钠(9.99克,18.5mmol),30分钟后加入丙烯酸甲酯(7.9g,92.3mmol),升温至回流反应,TLC显示反应完全后反应液冷却至室温,用乙酸将反应液pH值调至5-6,加入100毫升乙酸乙酯100毫升水,分液萃取,取有机层,饱和氯化钠水洗,无水硫酸钠干燥,减压下浓缩,残余物经柱色谱提纯(淋洗液为PE:EA=2:1),得4.5克淡黄色固体,收率40.2%。
步骤2:1-(4-氟苯基)-1H-吡唑-3-醇的合成:
1-(4-氟苯基)-吡唑啉-3-酮(4.3g,23.9mmol)溶于20毫升5%氢氧化钾水溶液中,加入6水合三氯化铁(1.3g,4.78mmol),通入氧气,80℃下反应,6小时后TLC显示反应完毕,反应液冷却至室温,用10%盐酸将反应液pH值调至1-2,50毫升乙酸乙酯萃取,有机层用饱和氯化钠水溶液洗,取有机层,无水硫酸钠干燥,减压下浓缩,残余物经柱色谱提纯(淋洗液为PE:EA=2:1),得2.5克淡黄色固体,收率58.7%。
步骤3:1-(4-氟苯基)-3-(2,5-二甲基-4-硝基苯氧基)-1H-吡唑的合成:
1-氯-2,5-二甲基-4-硝基苯(2.4g,12.9mmol)和碳酸钾(2.4g,13.6mmol)加入到20毫升DMF中,升温至回流,加入1-(4-氟苯基)-1H-吡唑-3-醇(2.4g,13.6mmol),回流反应,10小时后反应液冷却至室温,加入100毫升水和50毫升乙酸乙酯,分液萃取,取有机层,饱和氯化钠水洗,无水硫酸钠干燥,减压下浓缩,残余物经柱色谱提纯(淋洗液为PE:EA=4:1),得1.7克淡黄色固体,收率39.2%。
步骤4:2,5-二甲基-4-((1-(4-氟苯基)-1H-吡唑-3-基)氧基)苯胺的合成:
1-(4-氟苯基)-3-(2,5-二甲基-4-硝基苯氧基)-1H-吡唑(1.7g,5.1mmol)和10%钯碳(166mg)加入到15毫升乙醇中,滴加水合肼(2.6g,40%,20.3mmol),滴毕,室温下搅拌,1小时后反应完毕,抽滤,加入50毫升水和20毫升乙酸乙酯,分液萃取,取有机层,饱和氯化钠水洗,无水硫酸钠干燥,减压下浓缩,残余物经柱色谱提纯(淋洗液为PE:EA=4:1),得1.1克黄色固体,收率71.1%。
步骤5:(E)-N-(4-((1-(4-氟苯基)-1H-吡唑-3-基)氧基)-2,5-二甲基苯基)甲脒乙醚的合成:
2,5-二甲基-4-((1-(4-氟苯基)-1H-吡唑-3-基)氧基)苯胺(1.1g,3.6mmol)、原甲酸三乙酯(5.3g,35.6mmol)和对甲苯磺酸一水合物(68mg,0.36mmol)加入到反应瓶中,升温至回流反应8小时,反应液冷却至室温,加压蒸馏至无液滴滴下,得棕色油状物,不经分离,直接进行下一步。
步骤6:E)-N'-(4-((1-(4-氟苯基)-1H-吡唑-3-基)氧基)-2,5-二甲基苯基)-N-乙基-N-甲基甲脒的合成:
(E)-N-(4-((1-(4-氟苯基)-1H-吡唑-3-基)氧基)-2,5-二甲基苯基)甲脒乙醚(750mg,2.1mmol)溶于10毫升 二氯甲烷中,加入甲乙胺(502mg,8.4mmol),升温至回流反应,2小时后反应完毕,反应液冷却至室温,加入20毫升水,分液萃取,取有机层,饱和氯化钠水洗,无水硫酸钠干燥,减压下浓缩,残余物经柱色谱提纯(淋洗液为PE:EA=2:1),得426毫克淡黄色油,收率54.8%。
化合物5的1H NMR(DMSO-d6,δ[ppm]):8.35(d,J=2.4Hz,1H),7.77–7.71(m,2H),7.65(s,1H),7.33-7.27(m,2H),6.84(s,1H),6.68(s,1H),5.90(d,J=2.4Hz,1H),3.34(br s,2H),2.93(s,3H),2.13(d,J=6.0Hz,6H),1.13(t,J=7.2Hz,3H).
实施例3
(E)-N'-(4-((1-(4-氯苯基)-1H-吡唑-3-基)氧基)-2,5-二甲基苯基)-N-乙基-N-甲基甲脒(化合物22)的制备:
Figure PCTCN2022105331-appb-000027
步骤1:1-(4-氯苯基)-3-(2,5-二甲基-4-硝基苯氧基)-1H-吡唑的合成:
1-氯-2,5-二甲基-4-硝基苯(10g,53.9mmol)和碳酸钾(8.9g,64.65mmol)加入到80毫升DMF中,升温至回流,加入1-(4-氯苯基)-1H-吡唑-3-醇(10.5g,53.9mmol),回流反应,20小时后反应液冷却至室温,加入200毫升水,过滤得黄色固体,饱和氯化钠水洗,烘箱干燥,残余物经柱色谱提纯(淋洗液为PE:EA=5:1),得9.64克淡黄色固体,收率52.1%。
步骤2:2,5-二甲基-4-((1-(4-氯苯基)-1H-吡唑-3-基)氧基)苯胺的合成:
1-(4-氯苯基)-3-(2,5-二甲基-4-硝基苯氧基)-1H-吡唑(4.79g,13.96mmol)加入到30毫升无水乙醇中,加入还原铁粉(2.35g,41.89mmol),滴加10毫升饱和氯化铵水溶液,回流反应,8小时后反应液冷却至室温,加入30毫升水和50毫升乙酸乙酯,分液萃取,取有机层,饱和氯化钠水洗,无水硫酸钠干燥,减压下浓缩,残余物经柱色谱提纯(淋洗液为PE:EA=10:1),得3.91克褐色固体,收率89.5%。
步骤3:(E)-N-(4-((1-(4-氯苯基)-1H-吡唑-3-基)氧基)-2,5-二甲基苯基)甲脒乙醚的合成:
2,5-二甲基-4-((1-(4-氯苯基)-1H-吡唑-3-基)氧基)苯胺(2.49g,7.96mmol)、原甲酸三乙酯(8.9g,60.05mmol)和对甲苯磺酸一水合物(25mg,0.13mmol)加入到反应瓶中,升温至回流反应12小时,反应液冷却至室温,加压蒸馏至无液滴滴下,得棕色油状物,不经分离,直接进行下一步。
步骤4:E)-N'-(4-((1-(4-氯苯基)-1H-吡唑-3-基)氧基)-2,5-二甲基苯基)-N-乙基-N-甲基甲脒的合成:
(E)-N-(4-((1-(4-氯苯基)-1H-吡唑-3-基)氧基)-2,5-二甲基苯基)甲脒乙醚(2.93g,7.96mmol)溶于30毫升二氯甲烷中,加入甲乙胺(1.4g,23.88mmol),升温至回流反应,4小时后反应完毕,反应液冷却至室温,加入30毫升水,分液萃取,取有机层,饱和氯化钠水洗,无水硫酸钠干燥,减压下浓缩,残余物经柱色谱提纯(淋洗液为PE:EA=10:1),得2.38克白色固体,收率78.3%。
化合物22的 1H NMR(DMSO-d6,δ[ppm]):8.41(d,J=2.4Hz,1H),7.74(d,J=8.8Hz,2H),7.65(br s,1H),7.51(d,J=8.8Hz,2H),6.85(s,1H),6.68(s,1H),5.93(d,J=2.4Hz,1H),3.33(br s,2H),2.93(s,3H),2.12(d,J=3.2Hz,6H),1.13(t,J=7.2Hz,3H).
实施例4
(E)-N'-(4-((1-(3,4-二氯苯基)-1H-吡唑-3-基)氧基)-2,5-二甲基苯基)-N-乙基-N-甲基甲脒(化合物69)的制备:
Figure PCTCN2022105331-appb-000028
步骤1:1-(3,4-二氯苯基)-1H-吡唑-3-酮的合成:
3,4-二氯苯肼盐酸盐(10g,60.39mmol)溶于50毫升乙醇中,升温至40℃,加入甲醇钠(9.8克,181.17mmol),溶液由淡黄色浑浊变成紫红色,30分钟后逐滴加入丙烯酸甲酯(7.8g,90.59mmol),升温至回流反应,TLC显示反应完全后反应液冷却至室温,用乙酸将反应液pH值调至5-6,加入100毫升乙酸乙酯100毫升水,分液萃取,取有机层,饱和氯化钠水洗,无水硫酸钠干燥,减压下浓缩,残余物经柱色谱提纯(淋洗液为PE:EA=5:1),得2.58克淡黄色固体,收率18.6%。
步骤2:1-(3,4-二氯苯基)-1H-吡唑-3-醇的合成:
1-(3,4-二氯苯基)-吡唑啉-3-酮(2.2g,9.57mmol)溶于20毫升5%氢氧化钾水溶液中,加入六水合三氯化铁(0.52g,1.91mmol),通入氧气,80℃下反应,9小时后TLC显示反应完毕,反应液冷却至室温,用10%盐酸将反应液pH值调至1-2,50毫升乙酸乙酯萃取,有机层用饱和氯化钠水溶液洗,取有机层,无水硫酸钠干燥,减压下浓缩,残余物经柱色谱提纯(淋洗液为PE:EA=10:1),得1.65克淡黄色固体,收率75.0%。
步骤3:1-(3,4-二氯苯基)-3-(2,5-二甲基-4-硝基苯氧基)-1H-吡唑的合成:
1-氯-2,5-二甲基-4-硝基苯(1.34g,7.24mmol)和碳酸钾(1.2g,8.68mmol)加入到30毫升DMF中,升温至回流,加入1-(3,4-二氯苯基)-1H-吡唑-3-醇(1.65g,7.24mmol),回流反应,6小时后反应液冷却至室温,加入100毫升水和50毫升乙酸乙酯,分液萃取,取有机层,饱和氯化钠水洗,无水硫酸钠干燥,减压下浓缩,残余物经柱色谱提纯(淋洗液为PE:EA=20:1),得1.99克淡黄色固体,收率73.7%。
步骤4:2,5-二甲基-4-((1-(3,4-二氯苯基)-1H-吡唑-3-基)氧基)苯胺的合成:
1-(3,4-二氯苯基)-3-(2,5-二甲基-4-硝基苯氧基)-1H-吡唑(1.99g,5.28mmol)加入到30毫升无水乙醇中,加入还原铁粉(0.89g,15.83mmol),滴加10毫升饱和氯化铵水溶液,回流反应,8小时后反应液冷却至室温,加入30毫升水和50毫升乙酸乙酯,分液萃取,取有机层,饱和氯化钠水洗,无水硫酸钠干燥,减压下浓缩,残余物经柱色谱提纯(淋洗液为PE:EA=20:1),得1.04克褐色固体,收率56.8%。
步骤5:(E)-N-(4-((1-(3,4-二氯苯基)-1H-吡唑-3-基)氧基)-2,5-二甲基苯基)甲脒乙醚的合成:
2,5-二甲基-4-((1-(3,4-二氯苯基)-1H-吡唑-3-基)氧基)苯胺(0.23g,0.66mmol)、原甲酸三乙酯(8.9g,60.05mmol)和对甲苯磺酸一水合物(20mg,0.11mmol)加入到反应瓶中,升温至回流反应12小时,反应液冷却至室温,加压蒸馏至无液滴滴下,得黄色油状物,不经分离,直接进行下一步。
步骤6:(E)-N'-(4-((1-(3,4-二氯苯基)-1H-吡唑-3-基)氧基)-2,5-二甲基苯基)-N-乙基-N-甲基甲脒的合成:
(E)-N-(4-((1-(3,4-二氯苯基)-1H-吡唑-3-基)氧基)-2,5-二甲基苯基)甲脒乙醚(0.27g,0.66mmol)溶于10毫升二氯甲烷中,加入甲乙胺(0.12g,1.98mmol),升温至回流反应,6小时后反应完毕,反应液冷却至室温,加入30毫升水,分液萃取,取有机层,饱和氯化钠水洗,无水硫酸钠干燥,减压下浓缩,残余物经柱色谱提纯(淋洗液为PE:EA=5:1),得0.16克橙色油,收率59.3%。
化合物69的1H NMR(DMSO-d6,δ[ppm]):8.50(d,J=2.4Hz,1H),8.04-7.98(m,1H),7.75-7.69(m,2H),6.86(s,1H),6.70(s,1H),5.97(d,J=2.4Hz,1H),3.32(br s,2H),2.93(br s,3H),2.12(s,6H),1.23(t,J=7.2Hz,3H).
实施例5
(E)-N-(4-((1-(3,4-二氯苯基)-1H-吡唑-3-基)氧基)-2,5-二甲基苯基)-1-(吡咯啉-1-基)亚胺(化合物70)的制备:
Figure PCTCN2022105331-appb-000029
(E)-N-(4-((1-(3,4-二氯苯基)-1H-吡唑-3-基)氧基)-2,5-二甲基苯基)甲脒乙醚(0.27g,0.66mmol,参照实施例4制备)溶于10毫升二氯甲烷中,加入吡咯烷(0.12g,1.98mmol),升温至回流反应,6小时后反应完毕,反应液冷却至室温,加入30毫升水,分液萃取,取有机层,饱和氯化钠水洗,无水硫酸钠干燥,减压下浓缩,残余物经柱色谱提纯(淋洗液为PE:EA=5:1),得0.16克淡黄色固体,收率59.3%。
化合物70的 1H NMR(DMSO-d6,δ[ppm]):8.50(d,J=2.8Hz,1H),8.05-7.99(m,1H),7.81(s,1H),7.73-6.69(m,2H),6.85(s,1H),6.69(s,1H),5.97(d,J=2.8Hz,1H),3.52-3.36(m,4H),2.12(d,J=3.2Hz,6H),1.87(br s,4H).
实施例6
(E)-N-(4-((1-(3,4-二氯苯基)-1H-吡唑-3-基)氧基)-2,5-二甲基苯基)-1-(吗啉1-基)亚胺(化合物71)的制备:
Figure PCTCN2022105331-appb-000030
(E)-N-(4-((1-(3,4-二氯苯基)-1H-吡唑-3-基)氧基)-2,5-二甲基苯基)甲脒乙醚(0.30g,0.75mmol,参照实施例4制备)溶于10毫升二氯甲烷中,加入吗啡啉(0.20g,2.25mmol),升温至回流反应,6小时后反应完毕,反应液冷却至室温,加入30毫升水,分液萃取,取有机层,饱和氯化钠水洗,无水硫酸钠干燥,减压下浓缩,残余物经柱色谱提纯(淋洗液为PE:EA=5:1),得0.24克淡黄色固体,收率72.07%。
化合物71的 1H NMR(DMSO-d6,δ[ppm]):8.50(d,J=2.8Hz,1H),8.03-8.00(m,1H),7.73-7.70(m,2H),7.68(br s,1H),6.87(s,1H),6.73(s,1H),5.98(d,J=2.8Hz,1H),3.67-3.59(m,4H),3.53-3.40(m,4H),2.12(d,J=4.4Hz,6H).
实施例7
(E)-N'-(4-((1-(4-氰基苯基)-1H-吡唑-3-基)氧基)-2,5-二甲基苯基)-N-丙基甲脒(化合物72)的制备:
Figure PCTCN2022105331-appb-000031
步骤1:1-(4-氰基苯基)-1H-吡唑-3-酮的合成:
4-氰基苯肼盐酸盐(15g,88.44mmol)加入到50毫升四氢呋喃中,加入丙烯酸甲酯(6.45g,73.41mmol),加入叔丁醇钾(16.47克,146.82mmol),溶液由淡黄色浑浊变成橙色,升温至回流反应,TLC显示反应完全后反应液冷却至室温,用盐酸将反应液pH值调至2,加入100毫升乙酸乙酯100毫升水,分液萃取,取有机层,饱和氯化钠水洗,无水硫酸钠干燥,减压下浓缩,残余物经柱色谱提纯(淋洗液为PE:EA=3:2),得6.7克淡黄色固体,收率40.53%。
步骤2:1-(4-氰基苯基)-1H-吡唑-3-醇的合成:
1-(4-氰基苯基)-吡唑啉-3-酮(6.76g,36.14mmol)溶于50毫升5%氢氧化钾水溶液中,加入六水合三氯化铁(1.95g,7.23mmol),通入氧气,80℃下反应,17小时后TLC显示反应完毕,反应液冷却至室温,用10%盐酸将反应液pH值调至1-2,100毫升乙酸乙酯萃取,有机层用饱和氯化钠水溶液洗,取有机层,无水硫酸钠干燥,减压下浓缩,残余物经柱色谱提纯(淋洗液为PE:EA=5:1),得5.36克棕色固体,收率80.12%。
步骤3:1-(4-氰基苯基)-3-(2,5-二甲基-4-硝基苯氧基)-1H-吡唑的合成:
1-氯-2,5-二甲基-4-硝基苯(5.2g,28.11mmol)和碳酸钾(4.7g,33.73mmol)加入到50毫升DMF中,升温至回流,加入1-(4-氰基苯基)-1H-吡唑-3-醇(5.2g,28.11mmol),回流反应,12小时后反应液冷却至室温,加入100毫升水和50毫升乙酸乙酯,分液萃取,取有机层,饱和氯化钠水洗,无水硫酸钠干燥,减压下浓缩,残余物经柱色谱提纯(淋洗液为PE:EA=2:1),得5.19克棕黄色固体,收率55.27%。
步骤4:2,5-二甲基-4-((1-(4-氰基苯基)-1H-吡唑-3-基)氧基)苯胺的合成:
1-(4-氰基苯基)-3-(2,5-二甲基-4-硝基苯氧基)-1H-吡唑(5.19g,15.54mmol)加入到50毫升无水乙醇中,加入还原铁粉(2.61g,46.62mmol),滴加20毫升饱和氯化铵水溶液,回流反应,8小时后反应液冷却至室温,加入50毫升水和100毫升乙酸乙酯,分液萃取,取有机层,饱和氯化钠水洗,无水硫酸钠干燥,减压下浓缩,残余物经柱色谱提纯(淋洗液为PE:EA=3:1),得3.81克黄固体,收率80.72%。
步骤5:(E)-N-(4-((1-(4-氰基苯基)-1H-吡唑-3-基)氧基)-2,5-二甲基苯基)甲脒乙醚的合成:
2,5-二甲基-4-((1-(4-氰基苯基)-1H-吡唑-3-基)氧基)苯胺(0.2g,0.66mmol)、原甲酸三乙酯(8.9g,60.05mmol)和对甲苯磺酸一水合物(20mg,0.11mmol)加入到反应瓶中,升温至回流反应4小时,反应液冷却至室温,加压蒸馏至无液滴滴下,得橙色油状物,不经分离,直接进行下一步。
步骤6:E)-N'-(4-((1-(4-氰基苯基)-1H-吡唑-3-基)氧基)-2,5-二甲基苯基)-N-丙基甲脒的合成:
(E)-N-(4-((1-(4-氰基苯基)-1H-吡唑-3-基)氧基)-2,5-二甲基苯基)甲脒乙醚(0.24g,0.66mmol)溶于10毫升二氯甲烷中,加入正丙胺(0.12g,1.98mmol),升温至回流反应,6小时后反应完毕,反应液冷却至室温,加入30毫升水,分液萃取,取有机层,饱和氯化钠水洗,无水硫酸钠干燥,减压下浓缩,残余物经柱色谱提纯(淋洗液为PE:EA=3:1),得0.18克橙色油,收率73.17%。
化合物72的 1H NMR(DMSO-d6,δ[ppm]):1H NMR(400MHz,DMSO-d6)δ8.56(d,J=2.8Hz,1H),7.98-7.87(m,4H),7.55(s,1H),6.86(s,1H),6.63(s,1H),6.03(d,J=2.8Hz,1H),3.22(br s,2H),2.12(d,J=3.6Hz,6H),1.57(d,J=7.8Hz,2H),0.92(t,J=7.2Hz,3H).
实施例8
(E)-N'-(4-((1-(4-氰基苯基)-1H-吡唑-3-基)氧基)-2,5-二甲基苯基)-N-异丙基甲脒(化合物73)的制备:
Figure PCTCN2022105331-appb-000032
(E)-N-(4-((1-(4-氰基苯基)-1H-吡唑-3-基)氧基)-2,5-二甲基苯基)甲脒乙醚(0.27g,0.76mmol)溶于10毫升二氯甲烷中,加入异丙胺(0.13g,2.28mmol),升温至回流反应,6小时后反应完毕,反应液冷却至室温,加入30毫升水,分液萃取,取有机层,饱和氯化钠水洗,无水硫酸钠干燥,减压下浓缩,残余物经柱色谱提纯(淋洗液为PE:EA=2:1),得0.18克红棕色油,收率64.29%。
化合物73的 1H NMR(DMSO-d6,δ[ppm]):8.57(d,J=2.8Hz,1H),7.94–7.90(m,5H),7.47(s,1H),6.87(s,1H),6.64(s,1H),6.03(d,J=2.8Hz,1H),4.08-3.96(m,1H),2.12(s,6H),1.17(d,J=6.4Hz,6H).
实施例9
(E)-N'-(4-((1-(4-氰基苯基)-1H-吡唑-3-基)氧基)-2,5-二甲基苯基)-N-丁基甲脒(化合物74)的制备:
Figure PCTCN2022105331-appb-000033
(E)-N-(4-((1-(4-氰基苯基)-1H-吡唑-3-基)氧基)-2,5-二甲基苯基)甲脒乙醚(0.30g,0.82mmol)溶于10毫升二氯甲烷中,加入正丙胺(0.18g,2.46mmol),升温至回流反应,6小时后反应完毕,反应液冷却至室温,加入30毫升水,分液萃取,取有机层,饱和氯化钠水洗,无水硫酸钠干燥,减压下浓缩,残余物经柱色谱提纯(淋洗液为PE:EA=3:1),得0.30克橙色油,收率93.75%。
化合物74的 1H NMR(DMSO-d6,δ[ppm])8.56(d,J=2.8Hz,1H),7.95-7.87(m,4H),7.55(s,1H),7.06-6.94(m,1H),6.86(s,1H),6.63(s,1H),6.03(d,J=2.8Hz,1H),3.26(br s,2H),2.12(d,J=2.8Hz,6H),1.59-1.47(m,2H),1.40-1.26(m,2H),0.92(t,J=7.6Hz,3H).
实施例10
(E)-N'-(4-((1-(4-氰基苯基)-1H-吡唑-3-基)氧基)-2,5-二甲基苯基)-N-新戊基甲脒(化合物75)的制备:
Figure PCTCN2022105331-appb-000034
(E)-N-(4-((1-(4-氰基苯基)-1H-吡唑-3-基)氧基)-2,5-二甲基苯基)甲脒乙醚(0.30g,0.82mmol)溶于10毫升二氯甲烷中,加入新戊胺(0.21g,2.46mmol),升温至回流反应,6小时后反应完毕,反应液冷却至室温,加入30毫升水,分液萃取,取有机层,饱和氯化钠水洗,无水硫酸钠干燥,减压下浓缩,残余物经柱色谱提纯(淋洗液为PE:EA=3:1),得0.28克淡黄色固体,收率85.11%。
化合物75的 1H NMR(DMSO-d6,δ[ppm])8.56(d,J=2.8Hz,1H),7.95-7.87(m,4H),7.58(s,1H),7.01-6.97(m,1H),6.86(s,1H),6.61(s,1H),6.03(d,J=2.8Hz,1H),3.15(d,J=6.4Hz,2H),2.11(d,J=8.8Hz,6H),0.94(s,9H).
实施例11
(E)-N'-(4-((1-(4-氰基苯基)-1H-吡唑-3-基)氧基)-2,5-二甲基苯基)-N-异戊基甲脒(化合物76)的制备:
Figure PCTCN2022105331-appb-000035
(E)-N-(4-((1-(4-氰基苯基)-1H-吡唑-3-基)氧基)-2,5-二甲基苯基)甲脒乙醚(0.27g,0.76mmol)溶于10毫升二氯甲烷中,加入异戊胺(0.20g,2.28mmol),升温至回流反应,6小时后反应完毕,反应液冷却至室温,加入30毫升水,分液萃取,取有机层,饱和氯化钠水洗,无水硫酸钠干燥,减压下浓缩,残余物经柱色谱提纯(淋洗液为PE:EA=2:1),得0.20克橙色油,收率65.79%。
化合物76的 1H NMR(δ[ppm]):1H NMR(400MHz,DMSO-d6)δ8.57(d,J=2.8Hz,1H),7.92-7.90(m,4H),7.55(s,1H),7.02-6.98(m,1H),6.87(s,1H),6.64(s,1H),6.03(d,J=2.8Hz,1H),3.28(s,2H),2.12(s,6H),1.69-1.54(m,1H),1.47-1.45(m,2H),0.91(d,J=6.4Hz,6H).
实施例12
(E)-N'-(4-((1-(4-氰基苯基)-1H-吡唑-3-基)氧基)-2,5-二甲基苯基)-N-甲基-N-乙基甲脒(化合物77)的制备:
Figure PCTCN2022105331-appb-000036
(E)-N-(4-((1-(4-氰基苯基)-1H-吡唑-3-基)氧基)-2,5-二甲基苯基)甲脒乙醚(0.30g,0.82mmol)溶于10毫升二氯甲烷中,加入甲乙胺(0.15g,2.46mmol),升温至回流反应,5小时后反应完毕,反应液冷却至室温,加入30毫升水,分液萃取,取有机层,饱和氯化钠水洗,无水硫酸钠干燥,减压下浓缩,残余物经柱色谱提纯(淋洗液为PE:EA=1:1),得0.29克淡黄色固体,收率95.08%。
化合物77的 1H NMR(δ[ppm]):1H NMR(400MHz,DMSO-d6)δ8.56(d,J=2.8Hz,1H),7.94-7.88(m,5H),6.87(s,1H),6.69(s,1H),6.02(d,J=2.8Hz,1H),3.36(br s,2H),2.93(br s,3H),2.12(s,6H),1.13(t,J=7.2Hz,3H).
实施例13
(E)-N-(4-((1-(4-氰基苯基)-1H-吡唑-3-基)氧基)-2,5-二甲基苯基)-1-(吡咯啉-1-基)亚胺(化合物78)的制备:
Figure PCTCN2022105331-appb-000037
(E)-N-(4-((1-(4-氰基苯基)-1H-吡唑-3-基)氧基)-2,5-二甲基苯基)甲脒乙醚(0.30g,0.82mmol)溶于10毫升二氯甲烷中,加入吡咯烷(0.17g,2.46mmol),升温至回流反应,5小时后反应完毕,反应液冷却至室温,加入30毫升水,分液萃取,取有机层,饱和氯化钠水洗,无水硫酸钠干燥,减压下浓缩,残余物 经柱色谱提纯(淋洗液为PE:EA=1:1),得0.26克淡黄色固体,收率82.54%。
化合物78的 1H NMR(DMSO-d6,δ[ppm]):8.56(d,J=2.8Hz,1H),7.97-7.88(m,4H),7.82(s,1H),6.87(s,1H),6.70(s,1H),6.03(d,J=2.8Hz,1H),3.46(br s,4H),2.13(d,J=4.8Hz,6H),1.87(br s,4H).
实施例14
(E)-N'-(4-((1-(4-氰基苯基)-1H-吡唑-3-基)氧基)-2,5-二甲基苯基)-1-(哌啶-1-基)亚胺(化合物79)的制备:
Figure PCTCN2022105331-appb-000038
(E)-N-(4-((1-(4-氰基苯基)-1H-吡唑-3-基)氧基)-2,5-二甲基苯基)甲脒乙醚(0.24g,0.66mmol)溶于10毫升二氯甲烷中,加入哌啶(0.17g,1.98mmol),升温至回流反应,5小时后反应完毕,反应液冷却至室温,加入30毫升水,分液萃取,取有机层,饱和氯化钠水洗,无水硫酸钠干燥,减压下浓缩,残余物经柱色谱提纯(淋洗液为PE:EA=3:1),得0.25克淡黄色固体,收率96.15%。
化合物79的 1H NMR(DMSO-d6,δ[ppm]):8.56(d,J=2.8Hz,1H),7.95-7.88(m,4H),7.60(s,1H),6.87(s,1H),6.70(s,1H),6.03(d,J=2.8Hz,1H),3.43(br s,4H),2.12(d,J=2.4Hz,6H),1.66-1.57(m,2H),1.56-1.47(m,4H).
实施例15
(E)-N'-(4-((1-(4-氰基苯基)-1H-吡唑-3-基)氧基)-2,5-二甲基苯基)-1-(吗啉-1-基)亚胺(化合物80)的制备:
Figure PCTCN2022105331-appb-000039
(E)-N-(4-((1-(4-氰基苯基)-1H-吡唑-3-基)氧基)-2,5-二甲基苯基)甲脒乙醚(0.24g,0.66mmol)溶于10毫升二氯甲烷中,加入吗啉(0.17g,1.98mmol),升温至回流反应,5小时后反应完毕,反应液冷却至室温,加入30毫升水,分液萃取,取有机层,饱和氯化钠水洗,无水硫酸钠干燥,减压下浓缩,残余物经柱色谱提纯(淋洗液为PE:EA=3:1),得0.2克淡黄色固体,收率76.92%。
化合物80的 1H NMR(DMSO-d6,δ[ppm]):8.57(d,J=2.8Hz,1H),7.94-7.88(m,4H),7.69(s,1H),6.89(s,1H),6.74(s,1H),6.04(d,J=2.8Hz,1H),3.65-3.62m Hz,4H),3.48(br s,4H),2.13(d,J=2.8Hz,6H).
实施例16
(E)-N'-(4-((1-(4-甲氧基苯基)-1H-吡唑-3-基)氧基)-2,5-二甲基苯基)-N-甲基-N-乙基甲脒(化合物81)的制备:
Figure PCTCN2022105331-appb-000040
步骤1:1-(4-甲氧基苯基)-1H-吡唑-3-醇的合成:
4-甲氧基苯肼盐酸盐(20g,114.53mmol)加入到100毫升四氢呋喃中,加入丙烯酸甲酯(8.18g,95.06mmol),加入叔丁醇钾(21.33克,190.12mmol),升温至回流反应,TLC显示反应完全后反应液冷却至室温,用盐酸将反应液pH值调至2,加入100毫升乙酸乙酯50毫升水,分液萃取,取有机层,饱和氯化钠水洗,无水硫酸钠干燥,减压下浓缩,残余物经柱色谱提纯(淋洗液为PE:EA=4:1),得1.2克淡黄色固体,收率5.51%。
步骤2:1-(4-甲氧基苯基)-3-(2,5-二甲基-4-硝基苯氧基)-1H-吡唑的合成:
1-氯-2,5-二甲基-4-硝基苯(1.05g,5.68mmol)和碳酸钾(0.86g,6.19mmol)加入到20毫升DMF中, 升温至回流,加入1-(4-甲氧基苯基)-1H-吡唑-3-醇(0.98g,5.16mmol),回流反应,12小时后反应液冷却至室温,加入100毫升水和50毫升乙酸乙酯,分液萃取,取有机层,饱和氯化钠水洗,无水硫酸钠干燥,减压下浓缩,残余物经柱色谱提纯(淋洗液为PE:EA=4:1),得0.86克黄色固体,收率49.14%。
步骤4:2,5-二甲基-4-((1-(4-甲氧基苯基)-1H-吡唑-3-基)氧基)苯胺的合成:
1-(4-甲氧基苯基)-3-(2,5-二甲基-4-硝基苯氧基)-1H-吡唑(0.86g,2.54mmol)加入到20毫升无水乙醇中,加入还原铁粉(0.43g,7.61mmol),滴加10毫升饱和氯化铵水溶液,回流反应,12小时后反应液冷却至室温,加入50毫升水和100毫升乙酸乙酯,分液萃取,取有机层,饱和氯化钠水洗,无水硫酸钠干燥,减压下浓缩,残余物经柱色谱提纯(淋洗液为PE:EA=10:1),得0.50克黄固体,收率64.10%。
步骤5:(E)-N-(4-((1-(4-甲氧基苯基)-1H-吡唑-3-基)氧基)-2,5-二甲基苯基)甲脒乙醚的合成:
2,5-二甲基-4-((1-(4-甲氧基苯基)-1H-吡唑-3-基)氧基)苯胺(0.16g,0.54mmol)、原甲酸三乙酯(8.9g,60.05mmol)和对甲苯磺酸一水合物(20mg,0.11mmol)加入到反应瓶中,升温至回流反应6小时,反应液冷却至室温,加压蒸馏至无液滴滴下,得橙色油状物,不经分离,直接进行下一步。
步骤6:E)-N'-(4-((1-(4-甲氧基苯基)-1H-吡唑-3-基)氧基)-2,5-二甲基苯基)-N-甲基-N-乙基甲脒的合成:
(E)-N-(4-((1-(4-甲氧基苯基)-1H-吡唑-3-基)氧基)-2,5-二甲基苯基)甲脒乙醚(0.19g,0.54mmol)溶于10毫升二氯甲烷中,加入甲乙胺(0.10g,1.62mmol),升温至回流反应,6小时后反应完毕,反应液冷却至室温,加入30毫升水,分液萃取,取有机层,饱和氯化钠水洗,无水硫酸钠干燥,减压下浓缩,残余物经柱色谱提纯(淋洗液为PE:EA=1:1),得0.15克橙色油,收率73.53%。
化合物81的 1H NMR(DMSO-d6,δ[ppm]):8.24(d,J=2.8Hz,1H),7.68–7.55(m,3H),7.01(J=9.2Hz,2H),6.83(s,1H),6.67(s,1H),5.83(d,J=2.8Hz,1H),3.78(s,3H),3.34(br s,2H),2.93(s,3H),2.13(d,J=9.2Hz,6H),1.13(t,J=7.2Hz,3H).
实施例17
(E)-N'-(4-((1-(4-甲氧基苯基)-1H-吡唑-3-基)氧基)-2,5-二甲基苯基)-1-(环戊-1-基)亚胺(化合物82)的制备:
Figure PCTCN2022105331-appb-000041
(E)-N-(4-((1-(4-甲氧基苯基)-1H-吡唑-3-基)氧基)-2,5-二甲基苯基)甲脒乙醚(0.19g,0.54mmol)溶于10毫升二氯甲烷中,加入吡咯烷(0.12g,1.62mmol),升温至回流反应,6小时后反应完毕,反应液冷却至室温,加入30毫升水,分液萃取,取有机层,饱和氯化钠水洗,无水硫酸钠干燥,减压下浓缩,残余物经柱色谱提纯(淋洗液为PE:EA=1:1),得0.15克淡黄色固体,收率76.19%。
化合物82的 1H NMR(DMSO-d6,δ[ppm]):8.24(d,J=2.8Hz,1H),7.81(s,1H),7.62(d,J=8.8Hz),7.02(d,J=8.8Hz,2H),6.83(s,1H),6.68(s,1H),5.83(d,J=2.8Hz,1H),3.78(s,3H),3.52-3.35(m,4H),2.13(d,J=5.6Hz,6H),1.87(s,4H).
实施例18
(E)-N-(4-((1-(4-甲氧基苯基)-1H-吡唑-3-基)氧基)-2,5-二甲基苯基)-1-(哌啶-1-基)亚胺(化合物83)的制备:
Figure PCTCN2022105331-appb-000042
(E)-N-(4-((1-(4-甲氧基苯基)-1H-吡唑-3-基)氧基)-2,5-二甲基苯基)甲脒乙醚(0.19g,0.54mmol)溶于10毫升二氯甲烷中,加入哌啶(0.14g,1.62mmol),升温至回流反应,6小时后反应完毕,反应液冷却至室温,加入30毫升水,分液萃取,取有机层,饱和氯化钠水洗,无水硫酸钠干燥,减压下浓缩,残余物经柱色谱提纯(淋洗液为PE:EA=1:1),得0.19克淡黄色固体,收率87.16%。
化合物83的 1H NMR(DMSO-d6,δ[ppm]):8.24(d,J=2.8Hz,1H),7.64(d,J=8.8Hz,2H),7.59(s,1H),7.01(d,J=8.8Hz,2H),6.83(s,1H),6.68(s,1H),5.83(d,J=2.8Hz,1H),3.78(s,3H),3.40(br s,4H),2.14(s,3H),2.10(s,3H),1.54-1.45(m,6H).
除上面描述的化合物外,表1中化合物参照合成实施例1-18中相似的方法制备或可制备,下文表4中 给出了参照合成实施例1-18合成的部分化合物的核磁数据。
表4
Figure PCTCN2022105331-appb-000043
Figure PCTCN2022105331-appb-000044
Figure PCTCN2022105331-appb-000045
Figure PCTCN2022105331-appb-000046
Figure PCTCN2022105331-appb-000047
Figure PCTCN2022105331-appb-000048
Figure PCTCN2022105331-appb-000049
本申请的其他通式I化合物可参照上述方法合成。
制剂实施例1
在本实施例中,由制备得到的吡唑醚类化合物来制备杀菌剂制剂,按照质量配比配制得到化合物2的浓度为30%悬浮剂。
表5
化合物2 30%
乙二醇 10%
壬基苯酚聚乙二醇醚 6%
木质素磺酸钠 10%
羧甲基纤维素 1%
37%甲醛水溶液 0.2%
75%硅油水溶液 0.8%
补足至100%
制备方法为:将化合物2及其它组分充分混合,由此得到的30%悬浮剂。并且用水稀释所得悬浮剂可得到所需浓度的稀释液。
生物活性测试实施例
用上述获得的本申请化合物对多种病菌进行了试验。如无特别说明实施例和本申请中:样品配制方法为称取待测样品原药10mg,用1mL DMF溶解,配制成10000ppm母液,用0.05%吐温-80水将母液稀释至所需浓度进行活性测试。
测试实施例1化合物对黄瓜白粉病的杀菌活性
在本实施例中,对制备得到的吡唑醚类化合物对防治黄瓜白粉病(Erysiphe cichoracearum)的效果进行测定,方法如下:
筛选采用活体盆栽测定方法,即将待测化合物样品用少量溶剂(溶剂的种类如丙酮、甲醇、DMF等,依据其对样品的溶解能力而选择,溶剂量与喷液量的体积比等于或小于0.05)溶解,用含有0.1%吐温80的水稀释,配制成所需浓度待测液。温室培养的两叶期黄瓜苗作为黄瓜白粉病(Erysiphe cichoracearum)的试验寄主植物。用本申请化合物按照设计浓度进行叶面喷雾处理。另设喷清水的空白对照,3次重复,处理后24h后进行病菌接种。接种后,将植物放在人工气候室中保湿培养(温度:昼25℃、夜20℃,相对湿度:95-99%)。试验材料培养24h后,移置温室培养。待对照充分发病后(通常为一周时间)进行化合物防病效果评估。结果调查用100~0来表示,以“100”级代表无病和“0”级代表最严重的发病程度。
化合物2、5、22、28、64、69在浓度为10ppm时对黄瓜白粉病的防治效果≥90%。
按照相同方法,将本申请化合物22与KC1进行了平行筛选。结果见表6。
表6化合物22与KC1对黄瓜白粉病的防治效果
Figure PCTCN2022105331-appb-000050
测试实施例2化合物对黄瓜霜霉病的杀菌活性
在本实施例中,对制备得到的吡唑醚类化合物对防治黄瓜霜霉病(Pseudoperonospora cubensis)的效果进行测定,方法如下:
筛选采用活体盆栽测定方法,即将待测化合物样品用少量溶剂(溶剂的种类如丙酮、甲醇、DMF等,依据其对样品的溶解能力而选择,溶剂量与喷液量的体积比等于或小于0.05)溶解,用含有0.1%吐温80的水稀释,配制成所需浓度待测液。温室培养的两叶期黄瓜苗作为黄瓜霜霉病(Pseudoperonospora cubensis)的试验寄主植物。用本申请化合物按照设计浓度进行叶面喷雾处理。另设喷清水的空白对照,3次重复,处理后24h后进行病菌接种。接种后,将植物放在人工气候室中保湿培养(温度:昼25℃、夜20℃,相对湿度:95-99%)。试验材料培养24h后,移置温室培养。待对照充分发病后(通常为一周时间)进行化 合物防病效果评估。结果调查参照美国植病学会编写的《A Manual of Assessment Keys for Plant Diseases》,用100~0来表示,以“100”级代表无病和“0”级代表最严重的发病程度。
化合物9、13、14、15、17、18、19、24、28、29、31、33、35、36、37、38、47、52、57在浓度为100ppm时对黄瓜霜霉病的防治效果≥90%。
测试实施例3化合物对大豆锈病的杀菌活性
在本实施例中,对制备得到的吡唑醚类化合物对防治大豆锈病(Phakopsora pachyrhizi)的效果进行测定,方法如下:
筛选采用活体盆栽测定方法,即将待测化合物样品用少量溶剂(溶剂的种类如丙酮、甲醇、DMF等,依据其对样品的溶解能力而选择,溶剂量与喷液量的体积比等于或小于0.05)溶解,用含有0.1%吐温80的水稀释,配制成所需浓度待测液。温室培养两叶期大豆作为大豆锈病(Phakopsora pachyrhizi)的试验寄主植物。用本申请化合物按照设计浓度进行叶面喷雾处理。另设喷清水的空白对照,3次重复,处理后24h后进行病菌接种。接种后,将植物放在人工气候室中保湿培养(温度:昼25℃、夜20℃,相对湿度:95-99%)。试验材料培养24h后,移置温室培养。待对照充分发病后(通常为一周时间)进行化合物防病效果评估。结果调查参照美国植病学会编写的《A Manual of Assessment Keys for Plant Diseases》,用100~0来表示,以“100”级代表无病和“0”级代表最严重的发病程度。
化合物2、5、6在浓度为10ppm时对大豆锈病的防治效果≥90%。
照以上方法,现有化合物KC1、KC2和KC3对大豆锈病的防治效果为0。
测试实施例4化合物对小麦赤霉病孢子萌发的抑制活性
在本实施例中,对制备得到的吡唑醚类化合物对防治小麦赤霉病(Fusarium graminearum schw.)的效果进行测定,方法如下:
采用孢子萌发法进行测试,配制适量母液,制成1%水琼脂(WA)含药平板。用移液器吸取0.05mL赤霉病孢子悬浮液(1×106个/mL)均匀涂布于WA含药平板上,置于26℃培养箱中黑暗培养24h(此时空白对照孢子萌发率达到100%)。在显微镜10倍镜下观察各处理中孢子的萌发情况,并记录未萌发孢子数和孢子总数,计算孢子萌发抑制率。
化合物1、7、8、9、10、11、12、13、16、17、18、19、20、23、26、27、28、29、30、31、32、33、34、35、36、37、38、39、41、42、48、49、50、51、52、53、54、55、67在浓度为100ppm时对孢子萌发的抑制率100%。
照以上方法,KC1、KC2和KC3对小麦赤霉病孢子萌发抑制率为0。
本申请通过上述实施例来说明本申请的吡唑醚类化合物及其制备方法和应用,但本申请并不局限于上述实施例,即不意味着本申请必须依赖上述实施例才能实施。所属技术领域的技术人员应该明了,对本申请的任何改进,对本申请产品各原料的等效替换及辅助成分的添加、具体方式的选择等,均落在本申请的保护范围和公开范围之内。

Claims (9)

  1. 一种吡唑醚类化合物,其中,所述吡唑醚类化合物具有式I所示结构:
    Figure PCTCN2022105331-appb-100001
    其中:
    R 1选自至少被1个R 10取代的苯基、吡啶基、嘧啶基、吡唑基、噻唑基、噁唑基、异噁唑基;
    R 2和R 3分别独立的选自氢、卤素、C1-C6烷基、C1-C6卤代烷基、C1-C6烷氧基、C1-C6卤代烷氧基;
    R 4选自C1-C6烷基、C1-C6烷氧基、C1-C6卤代烷基、C1-C6卤代烷氧基;
    R 5选自氢、甲基;
    R 6选自氢、卤素、C1-C6烷基或C1-C6卤代烷基;
    R 7选自氢、甲基;
    R 8选自氢、C1-C6烷基;
    R 9选自C1-C8烷基、羟基C1-C6烷基、C1-C6环烷基、C1-C6环烷基C1-C6烷基;或
    R 8和R 9连同它们所连接的氮原子一起形成三元至六元饱和的环状基团,该环状基团可以任选地含有一个氧原子或一个硫原子;
    R 10选自氢、卤素、氰基、硝基、羟基、氨基、C1-C6烷基、C1-C6卤代烷基、C1-C6烷氧基、C1-C6卤代烷氧基、被C1-C6烷基取代的氨基、C1-C6烷基羰基氨基、C1-C6烷基亚砜基、C1-C6烷基砜基、C1-C6卤代烷基亚砜基、C1-C6卤代烷基砜基。
  2. 根据权利要求1所述的吡唑醚类化合物,其中,所述吡唑醚类化合物具有式II所示结构:
    Figure PCTCN2022105331-appb-100002
    R 2和R 3分别独立的选自氢、氟、氯、溴、碘、甲基、二氟甲基、三氟甲基、甲氧基、三氟甲氧基、二氟甲氧基;
    R 4选自甲基、二氟甲基、三氟甲基、甲氧基、二氟甲氧基、三氟甲氧基;
    R 5选自氢、甲基;
    R 6选自氢、氟、氯、溴、碘、甲基、二氟甲基、三氟甲基;
    R 7选自氢、甲基;
    R 8选自氢、甲基、乙基、正丙基、异丙基、正丁基、异丁基、叔丁基、正戊基、2-戊基、新戊基、异戊基、4-甲基-2-戊基、正己基;
    R 9选自甲基、乙基、羟基乙基、正丙基、异丙基、1-甲基丙基、1-乙基丙基、2-甲基丙基、3-甲基丙基、1,1-二甲基丙基、2,2-二甲基丙基、正丁基、叔丁基、3-甲基丁基、1,1-二甲基-3,3-二甲基丁基、正戊基、4-甲基-2-戊基、1-甲基戊基、2-甲基戊基、3-甲基戊基、4-甲基戊基、正己基、2-乙基己基、环丙基、环丁基、环戊基、环己基、环丙基甲基;或
    R 8和R 9连同它们所连接的氮原子一起形成吡咯、哌啶或吗啉;
    R 10选自氢、氟、氯、溴、碘、氰基、硝基、羟基、氨基、甲基、乙基、正丙基、异丙基、正丁基、异丁基、叔丁基、二氟甲基、三氟甲基、五氟乙基、七氟异丙基、甲氧基、二氟甲氧基、三氟甲氧基、甲氨基、乙酰氨基、甲磺酰基、三氟甲磺酰基;
    n表示0~5的整数。
  3. 根据权利要求2所述的吡唑醚类化合物,其中,
    R 2和R 3选自氢;
    R 4选自甲基;
    R 5选自氢;
    R 6选自氢、甲基;
    R 7选自氢;
    R 8选自氢、甲基;
    R 9选自甲基、乙基、羟基乙基、正丙基、异丙基、1-甲基丙基、1-乙基丙基、2-甲基丙基、3-甲基丙基、1,1-二甲基丙基、2,2-二甲基丙基、正丁基、叔丁基、3-甲基丁基、1,1-二甲基-3,3-二甲基丁基、正戊基、4-甲基-2-戊基、1-甲基戊基、2-甲基戊基、3-甲基戊基、4-甲基戊基、正己基、2-乙基己基;或
    R 8和R 9连同它们所连接的氮原子一起形成吡咯、哌啶或吗啉;
    R 10选自氢、氟、氯、氰基、甲氧基、三氟甲基;
    n表示0、1或2。
  4. 根据权利要求1-3中任一项所述的吡唑醚类化合物,其中,所述吡唑醚类化合物为如下化合物中的任意一种:
    Figure PCTCN2022105331-appb-100003
    Figure PCTCN2022105331-appb-100004
    Figure PCTCN2022105331-appb-100005
  5. 根据权利要求1-4中任一项所述的吡唑醚类化合物在防治植物病害中的应用。
  6. 一种杀菌剂组合物,其中,所述杀菌剂组合物包括活性组分和农药学上可接受的载体,所述活性组分为如权利要求1-4中任一项所述的吡唑醚类化合物。
  7. 根据权利要求6所述的杀菌剂组合物,其中,所述杀菌剂组合物中,所述活性成分的重量百分含量为1-99%。
  8. 一种防治植物病害的方法,其中,所述方法为:向需要控制的植物病害或其生长的介质上施用有效剂量的如权利要求6所述的杀菌剂组合物。
  9. 根据权利要求8所述的防治植物病害的方法,其中,所述有效剂量为每公顷10-1000g,优选每公顷20-500g。
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