WO2015074614A1 - 一种吡唑酰胺类化合物及其用途 - Google Patents

一种吡唑酰胺类化合物及其用途 Download PDF

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WO2015074614A1
WO2015074614A1 PCT/CN2014/091998 CN2014091998W WO2015074614A1 WO 2015074614 A1 WO2015074614 A1 WO 2015074614A1 CN 2014091998 W CN2014091998 W CN 2014091998W WO 2015074614 A1 WO2015074614 A1 WO 2015074614A1
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compound
formula
methyl
alkyl
group
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PCT/CN2014/091998
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English (en)
French (fr)
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吕亮
李玉钢
单中刚
吴沙沙
王斌
刘吉永
刘鹏
周继中
杨辉斌
李斌
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中国中化股份有限公司
沈阳化工研究院有限公司
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Priority to EP14864408.1A priority Critical patent/EP3075727B1/en
Priority to BR112016007427-0A priority patent/BR112016007427B1/pt
Priority to US16/619,409 priority patent/US11033029B2/en
Priority to CN201480055874.5A priority patent/CN105722828B/zh
Publication of WO2015074614A1 publication Critical patent/WO2015074614A1/zh

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    • 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
    • C07D231/14Heterocyclic 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 hetero atoms or with carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, e.g. ester or nitrile radicals, directly attached to ring carbon atoms
    • 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

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  • the invention belongs to the field of fungicides. It relates to a pyrazole amide compound and its bactericidal use.
  • the object of the present invention is to provide a pyrazole amide compound having novel structure and better bactericidal activity, which can be applied to the prevention and treatment of diseases in agriculture or forestry.
  • the present invention provides pyrazole amides as shown in Formula I:
  • R 1 is selected from the group consisting of hydrogen, C 1 -C 4 alkyl, C 2 -C 6 alkenyl-C 1 -C 6 alkyl;
  • R 2 and R 3 may be the same or different and each independently is selected from a C 1 -C 6 alkyl group
  • R 1 is selected from the group consisting of hydrogen, C 1 -C 4 alkyl, C 2 -C 4 alkenyl-C 1 -C 3 alkyl;
  • R 2 and R 3 may be the same or different and are each independently selected from methyl, ethyl, propyl, isopropyl, butyl or pentyl.
  • R 1 is selected from the group consisting of hydrogen, methyl, ethyl, propyl, isopropyl, n-butyl, isobutyl, sec-butyl, C 2 -C 4 alkenyl-C 1 -C 3 alkyl;
  • R 2 is selected from methyl or ethyl
  • R 3 is selected from methyl, ethyl, propyl, isopropyl, butyl or pentyl.
  • R 1 is selected from the group consisting of hydrogen, methyl, isobutyl, allyl, 2-methylallyl, but-3-en-2-yl or 2-methyl-but-3-en-2-yl;
  • R 2 is selected from methyl or ethyl
  • R 3 is selected from the group consisting of methyl, ethyl, propyl, butyl or pentyl.
  • the technical scheme of the present invention also includes a preparation method of the compound of the formula I, and the groups in the reaction formula are as defined above unless otherwise stated.
  • the compound of the formula II is reacted with a compound of the formula III in a suitable solvent in the presence of a suitable base at a temperature of from -10 ° C to the boiling point of a suitable solvent for 0.5 to 48 hours.
  • Suitable solvents are selected from the group consisting of dichloromethane, chloroform, carbon tetrachloride, hexane, benzene, toluene, ethyl acetate, acetonitrile, tetrahydrofuran, dioxane, N,N-dimethylformamide or dimethyl Sulfone and the like.
  • Suitable bases include alkali metals such as lithium, sodium or potassium hydrogen compounds such as sodium hydride, alkali metals such as lithium, sodium or potassium hydroxides such as sodium hydroxide, and also alkali metal carbonates such as sodium carbonate. It may be an organic base such as triethylamine, sodium t-butoxide or the like.
  • Compound V can be prepared by reacting a compound of formula II with a compound of formula IV in a suitable solvent in the presence of a suitable base at a temperature of from -10 ° C to the boiling point of a suitable solvent for from 0.5 to 48 hours.
  • Suitable solvents are selected from the group consisting of dichloromethane, chloroform, carbon tetrachloride, hexane, benzene, toluene, ethyl acetate, acetonitrile, tetrahydrofuran, dioxane, N,N-dimethylformamide or dimethyl Sulfone and the like.
  • Suitable bases include alkali metals such as lithium, sodium or potassium hydrogen compounds such as sodium hydride, alkali metals such as lithium, sodium or potassium hydroxides such as sodium hydroxide, and also alkali metal carbonates such as sodium carbonate. It may be an organic base such as triethylamine, sodium t-butoxide or the like.
  • the compound of the formula V is reacted with a compound of the formula VI (commercially available) in a suitable solvent in the presence of a suitable base at a temperature of from -10 ° C to the boiling point of a suitable solvent for 0.5 to 48 hours.
  • Suitable solvents are selected from the group consisting of dichloromethane, chloroform, carbon tetrachloride, hexane, benzene, toluene, ethyl acetate, acetonitrile, tetrahydrofuran, dioxane, N,N-dimethylformamide or dimethyl Sulfone and the like.
  • Suitable bases include alkali metals such as lithium, sodium or potassium hydrogen compounds such as sodium hydride, alkali metals such as lithium, sodium or potassium hydroxides such as sodium hydroxide, and also alkali metal carbonates such as sodium carbonate. It may be an organic base such as triethylamine, sodium t-butoxide or the like.
  • the compound of the formula IV is a commercially available reagent or can be prepared by reference to the following literature: Journal of Northwest Normal University, Natural Science Edition, 2010, 46(5): 59-63.
  • Table 1 lists the structural and physical properties of some of the compounds of formula I.
  • Compound 10 7.99 (s, 1H), 7.94 (s, 1H), 7.47-7.50 (d, 1H), 7.12-7.18 (t, 1H), 6.74-7.07 (t, 1H), 6.70-6.74 (d, 1H), 4.33-4.36 (m, 1H), 3.93 (s, 3H), 2.16 (s, 3H), 1.34-1.73 (m, 6H), 1.25-1.27 (d, 3H), 0.88-0.94 (t, 3H).
  • the pyrazole amide compounds of the present invention have unexpectedly high bactericidal activity compared to known pyrazole amide compounds. Accordingly, the present invention also encompasses the use of a compound of formula I for controlling diseases for the control of Oomycetes, Ascomycetes, Basidiomycetes, Deuteromycetes, and swollen roots. Plasmodiophoromycetes, Chytridiomycetes, and Zygomycetes diseases.
  • the present invention also encompasses a bactericidal composition having a compound of the formula I as an active ingredient.
  • the compound of the formula I as an active ingredient in the bactericidal composition is present in an amount of from 1 to 99% by weight.
  • an agriculturally acceptable carrier is also included in the germicidal composition.
  • compositions of the invention may be administered in the form of a formulation.
  • the compound of the formula I is dissolved or dispersed in the carrier as an active ingredient or formulated into a formulation for easier dispersion as it is used for sterilization.
  • these chemicals can be formulated as wettable powders or emulsifiable concentrates.
  • at least one liquid or solid carrier is added, and a suitable surfactant may be added as needed.
  • the technical solution of the present invention also includes a method of controlling a disease by applying the bactericidal composition of the present invention to the disease or its growth medium.
  • a more suitable effective amount is usually selected from 10 grams to 1000 grams per hectare.
  • one or more other insecticides, bactericides, herbicides, plant growth regulators or fertilizers may be added to the germicidal compositions of the invention, thereby producing additional Advantages and effects.
  • test method is as follows:
  • the living body potting method is used, that is, the sample of the test compound is selected with a small amount of solvent (the kind of the solvent such as acetone, methanol, DMF, etc., according to the solvency of the sample, and the volume ratio of the amount of the solvent to the amount of the sprayed liquid is equal to or less than 0.05.
  • Foliar spray treatment was carried out at a designed concentration with the compounds of the invention. A blank control of sprayed water was also set up, repeated 3 times, and the disease was inoculated the next day after the treatment.
  • the plants were placed in an artificial climate chamber for moisturizing culture (temperature: ⁇ 25 ° C, night 20 ° C, relative humidity: 95-99%).
  • moisturizing culture temperature: ⁇ 25 ° C, night 20 ° C, relative humidity: 95-99%.
  • the greenhouse culture was transplanted, and plants which did not require moisturizing culture were directly inoculated and cultured in a greenhouse.
  • the compound disease prevention effect evaluation was performed after the control was sufficiently ill (usually one week).
  • the results of the survey refer to the "A Manual of Assessment Keys for Plant Diseases" prepared by the American Plant Disease Society, which is represented by 100 to 0.
  • the "100" level represents disease-free and the "0" level represents the most serious disease.
  • the following compounds have better control effect at a concentration of 400 ppm, and the control effect is ⁇ 80%: compounds 3, 11.
  • the compounds 2 and 11 of the present invention and the known compounds KC 1 , KC 2 , KC 3 and KC 4 were selected (in turn, the compounds 7g, 7f and the compounds in the Journal of Pesticide Science, 2011, 13(6): 576-580 and 7a, CN11646494A compound 11))
  • Parallel determination of cucumber downy mildew activity (control compounds are self-made, structure confirmed by nuclear magnetic resonance spectroscopy), the test results are shown in Table 2.
  • the following compounds have a good control effect at a concentration of 400 ppm, and the control effect is ⁇ 80%: compounds 1, 2, 3, 7, 9, 11 and 21.

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Agronomy & Crop Science (AREA)
  • Pest Control & Pesticides (AREA)
  • Plant Pathology (AREA)
  • Health & Medical Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Dentistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Zoology (AREA)
  • Environmental Sciences (AREA)
  • Agricultural Chemicals And Associated Chemicals (AREA)
  • Plural Heterocyclic Compounds (AREA)
  • Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)

Abstract

本发明公开了一种吡唑酰胺类化合物,如通式I所示。其中R1选自氢、C1-C4的烷基、C2-C6烯基-C1-C6的烷基;R2和R3可相同或不同,分别独立的选自C1-C6的烷基。本发明通式I化合物具有优异的杀菌活性,可用于防治真菌病害。

Description

一种吡唑酰胺类化合物及其用途 技术领域
本发明属于杀菌剂领域。涉及一种吡唑酰胺类化合物及其杀菌用途。
背景技术
由于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。
4-二氟甲基吡唑酰胺类化合物的杀菌活性已有报道。如农药学学报,2011,13(6):576-580公开了化合物KC1、KC2和KC3(分别为文章中化合物7g、7f和7a)及其离体杀菌活性。CN1646494A公开了化合物KC4(专利中化合物11),该化合物已经商品化,英文通用名bixafen。
Figure PCTCN2014091998-appb-000001
现有技术中,结构如本发明通式I所示的吡唑酰胺类化合物未见报道。
发明内容
本发明的目的在于提供一种结构新颖、杀菌活性更好的吡唑酰胺类化合物,它可应用于农业或林业上病害的防治。
本发明的技术方案如下:
本发明提供了吡唑酰胺类化合物,如通式I所示:
Figure PCTCN2014091998-appb-000002
式中:
R1选自氢、C1-C4的烷基、C2-C6烯基-C1-C6的烷基;
R2和R3可相同或不同,分别独立的选自C1-C6的烷基;
本发明中优选的技术方案为,通式I中:
R1选自氢、C1-C4的烷基、C2-C4烯基-C1-C3的烷基;
R2和R3可相同或不同,分别独立的选自甲基、乙基、丙基、异丙基、丁基或戊基。
本发明中进一步优选的技术方案为,通式I中:
R1选自氢、甲基、乙基、丙基、异丙基、正丁基、异丁基、仲丁基、C2-C4烯基-C1-C3的烷基;
R2选自甲基或乙基;
R3选自甲基、乙基、丙基、异丙基、丁基或戊基。
本发明中更进一步优选的技术方案为,通式I中:
R1选自氢、甲基、异丁基、烯丙基、2-甲基烯丙基、丁-3-烯-2-基或2-甲基-丁-3-烯-2-基;
R2选自甲基或乙基;
R3选自甲基、乙基、丙基、丁基或戊基。
本发明技术方案还包括通式I化合物的制备方法,除另有注明外,反应式中各基团定义同前。
方法一:
Figure PCTCN2014091998-appb-000003
通式II化合物与通式III化合物在适宜的溶剂中、适宜的碱存在下,温度为-10℃到适宜溶剂的沸点下反应0.5-48小时制得目标化合物I。
适宜的溶剂选自二氯甲烷、氯仿、四氯化碳、己烷、苯、甲苯、乙酸乙酯、乙腈、四氢呋喃、二氧六环、N,N-二甲基甲酰胺或二甲基亚砜等。
适宜的碱包括碱金属如锂、钠或钾的氢化合物如氢化钠,碱金属如锂、钠或钾的氢氧化物如氢氧化钠,还可以是碱金属的碳酸盐如碳酸钠,也可以是有机碱如三乙胺、叔丁醇钠等。
通式II化合物可参考下列文献制备:CN101979375A。
通式III化合物可参考下列文献制备:Bioorganic&Medicinal Chemistry,2012,20(3):1213-1221;农药,2007,46(5):307-309。
方法二:
Figure PCTCN2014091998-appb-000004
式中,X代表卤素。
通式II化合物与通式IV化合物在适宜的溶剂中、适宜的碱存在下,温度为-10℃到适宜溶剂的沸点下反应0.5-48小时制得化合物V。
适宜的溶剂选自二氯甲烷、氯仿、四氯化碳、己烷、苯、甲苯、乙酸乙酯、乙腈、四氢呋喃、二氧六环、N,N-二甲基甲酰胺或二甲基亚砜等。
适宜的碱包括碱金属如锂、钠或钾的氢化合物如氢化钠,碱金属如锂、钠或钾的氢氧化物如氢氧化钠,还可以是碱金属的碳酸盐如碳酸钠,也可以是有机碱如三乙胺、叔丁醇钠等。
通式V化合物与通式VI化合物(市售)在适宜的溶剂中、适宜的碱存在下,温度为-10℃到适宜溶剂的沸点下反应0.5-48小时制得目标物化合物I。
适宜的溶剂选自二氯甲烷、氯仿、四氯化碳、己烷、苯、甲苯、乙酸乙酯、乙腈、四氢呋喃、二氧六环、N,N-二甲基甲酰胺或二甲基亚砜等。
适宜的碱包括碱金属如锂、钠或钾的氢化合物如氢化钠,碱金属如锂、钠或钾的氢氧化物如氢氧化钠,还可以是碱金属的碳酸盐如碳酸钠,也可以是有机碱如三乙胺、叔丁醇钠等。
通式IV化合物为市售试剂或可参考下列文献制备:西北师范大学学报,自然科学版,2010,46(5):59-63。
表1列出了部分通式I化合物的结构和物理性质。
Figure PCTCN2014091998-appb-000005
表1部分通式I化合物的结构和物理性质
Figure PCTCN2014091998-appb-000006
Figure PCTCN2014091998-appb-000007
部分化合物的1H NMR(300MHz,CDCl3)数据如下:
化合物1:8.09(brs,1H),7.99(s,1H),7.33-7.34(m,1H),7.19-7.25(m,1H),7.03-7.06(m,1H),6.91(t,1H),6.65-6.69(dd,1H),4.55-4.59(m,1H),3.92(s,1H),1.28(d,6H)。
化合物2:8.13(s,1H),7.98(s,1H),7.33-7.34(t,1H),7.19-7.24(t,1H),7.02-7.05(m,1H),6.91(t,1H),6.66-6.69(m,1H),4.29-4.35(m,1H),3.92(s,3H),1.59-1.77(m,2H),1.25-1.30(d,3H),0.94-0.99(t,3H)。
化合物3:8.10(s,1H),7.99(s,1H),7.32-7.33(d,1H),7.19-7.24(m,1H),7.03-7.07(m,1H),6.89(t,1H),6.65-6.71(dd,1H),4.38-4.40(m,1H),3.93(s,3H),1.60-1.71(m,2H),1.47-1.58(m,2H),1.25(d,2H),0.91-0.98(t,3H)。
化合物6:8.17(s,1H),7.99(s,1H),7.35(s,1H),7.19-7.26(t,1H),6.74-7.10(t,1H),7.03-7.06(d,1H),6.66-6.69(d,1H),4.12-4.16(m,1H),3.90(s,1H),1.63-1.73(m,4H),0.88-0.97(t,6H)。
化合物7:8.02(s,1H),7.91(brs,1H),7.53-7.51(m,1H),7.18-7.13(m,1H),6.88(t,1H),6.76-6.73(m,1H),4.51(m,1H),3.95(s,3H),2.16(s,3H),1.30(d,6H)。
化合物8:8.02(s,1H),7.95(s,1H),7.42-7.44(d,1H),7.11-7.16(t,1H),6.92(t,1H),6.71-6.74(d,1H),4.26-4.32(m,1H),3.87(s,3H),2.16(s,3H),1.59-1.80(m,2H),1.20-1.29(d,3H),0.95-1.00(t,3H)。
化合物9:8.06(s,1H),7.95(s,1H),7.40-7.43(d,1H),7.11-7.17(t,1H),6.76-7.17(t,1H),6.72-6.74(d,1H),4.35-4.37(m,1H),3.86(s,3H),2.15(s,3H),1.41-1.55(m,4H),1.27-1.28(d,3H),0.91-0.94(t,3H)。
化合物10:7.99(s,1H),7.94(s,1H),7.47-7.50(d,1H),7.12-7.18(t,1H),6.74-7.07(t,1H),6.70-6.74(d,1H),4.33-4.36(m,1H),3.93(s,3H),2.16(s,3H),1.34-1.73(m,6H),1.25-1.27(d,3H),0.88-0.94(t,3H)。
化合物11:8.05(s,1H),7.97(s,1H),7.40-7.43(d,1H),7.11-7.17(t,1H),6.75-7.27(t,1H),6.70-6.72(d,1H),4.11-4.15(t,1H),3.88(s,3H),2.15(s,3H),1.60-1.73(m,4H),0.93-0.99(t,6H)。
化合物12:7.98(s,1H),7.88(s,1H),7.40-7.43(d,1H),7.13-7.18(t,1H),6.90-7.26(t,1H),6.70-6.73(d,1H),4.53-4.57(m,1H),3.93(s,3H),2.51-2.54(d,2H),1.84-1.89(m,1H),1.27-1.29(d,6H),0.89-0.93(d,6H)。
化合物21:7.83(br s,2H),7.52-7.55(d,1H),7.17-7.22(t,1H),6.83-7.26(t,1H),6.74-6.77(d,1H),4.79(s,1H),4.52-4.55(m,2H),3.95(s,3H),3.42(s,2H),1.69(s,3H),1.29-1.32(d,6H)。
化合物22:7.83(s,2H),7.52-7.54(d,1H),7.17-7.20(t,1H),6.83-7.23(t,1H),6.72-6.75(d,1H),4.79(s,1H),4.52(s,1H),4.37-4.39(t,1H),3.96(s,3H),3.42(s,2H),1.76(s,3H),1.37-1.58(m,4H),1.24-1.26(d,3H),0.90-0.96(t,3H)。
化合物25:7.84(s,2H),7.50-7.53(d,1H),7.17-7.22(t,1H),6.83-7.16(t,1H),6.70-6.73(d,1H),4.79(s,1H),4.52(s,1H),4.14-4.16(t,1H),3.95(s,3H),3.44(s,2H),1.77(s,3H),1.62-1.71(m,4H),0.90-0.96(t,6H)。
同已知的吡唑酰胺类化合物相比,本发明的吡唑酰胺类化合物具有意想不到的高杀菌活性。因此,本发明还包括通式I化合物用于控制病害的用途,以防治卵菌纲(Oomycetes)、子囊菌纲(Ascomycetes)、担子菌纲(Basidiomycetes)、半知菌纲(Deuteromycetes)、根肿菌纲(Plasmodiophoromycetes)、壶菌纲(Chytridiomycetes)和结合菌亚纲(Zygomycetes)病害。
在上面列出的纲名下的某些病害的实例可提及的包括但不限于:
小麦锈病、水稻纹枯病、小麦纹枯病、黄瓜霜霉病、葡萄霜霉病、小麦白粉病、番茄早疫病、黄瓜炭疽病、水稻稻瘟病、小麦赤霉病、小麦根腐病、西瓜蔓枯病、花生疮痂病、花生黑斑病、柑橘疮痂病、番茄晚疫病、辣椒根腐病、棉花黄萎病、油菜黑茎病、小麦全蚀病、香蕉叶斑病、小麦赤霉病、梨黑星病、玉米弯孢病、棉花枯萎病、人参锈腐病、玉米大斑病、芒果蒂腐病、黄瓜枯萎病、苹果轮纹病、苹果腐菌烂病、黄瓜灰霉病、油菜菌核病、香蕉叶斑病、小麦颖枯病。
本发明还包括以通式I化合物作为活性组分的杀菌组合物。该杀菌组合物中作为活性组分的通式I化合物的重量百分含量在1-99%之间。该杀菌组合物中还包括农业上可接受的载体。
本发明的组合物可以制剂的形式施用。通式I化合物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使用时更易于分散。例如:这些化学制剂可被制成可湿性粉剂或乳油。在这些组合物中,至少加入一种液体或固体载体,并且当需要时可以加入适当的表面活性剂。
本发明的技术方案还包括防治病害的方法:将本发明的杀菌组合物施于所述的病害或其生长介质上。通常选择的较为适宜的有效量为每公顷10克到1000克。
对于某些应用,例如在农业上可在本发明的杀菌组合物中加入一种或多种其它的杀虫剂、杀菌剂、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。
具体实施方式
下列合成实施例、生物活性测定实施例可用来进一步说明本发明,但不意味着限制本发明。
合成实施例
实施例1化合物1的制备:
Figure PCTCN2014091998-appb-000008
反应瓶中加入间异丙氧基苯胺(130毫克,0.85毫摩尔)、三乙胺(90毫克,0.85毫摩尔)和10毫升二氯甲烷,室温搅拌下滴加1-甲基-3-二氟甲基吡唑-4-甲酰氯(170毫克,0.85毫摩尔)的二氯甲烷溶液10毫升。滴毕,室温下反应,3小时后反应完毕。反应液倾入30毫升水中,取有机层,有机层分别用饱和碳酸氢钠水溶液、饱和食盐水洗涤,无水硫酸镁干燥,减压蒸尽溶剂。残余物通过柱色谱提纯(淋洗液:乙酸乙酯:石油醚=1:2)得到180毫克化合物1,收率68.4%。
实施例2化合物8的制备:
(1)1-(2-丁氧基)-2-甲基-3-硝基苯的合成
Figure PCTCN2014091998-appb-000009
向2-甲基-3硝基苯酚(2.00克,13.06毫摩尔)的DMF溶液中加入2-溴仲丁烷(2.14克,15.17毫摩尔)和碳酸钾(2.16克,15.17毫摩尔),在90℃下反应2小时。加入乙酸乙酯和水萃取,有机层用饱和食盐水洗涤,无水硫酸镁干燥。蒸干溶剂,残余物进行柱层析提纯(乙酸乙酯:石油醚=1:100),得1.65克固体。
(2)2-甲基-3-(2-丁氧基)苯胺的合成
Figure PCTCN2014091998-appb-000010
在1-(2-丁氧基)-2-甲基-3-硝基苯(1.25克,5.97毫摩尔)的乙醇溶液中加入水合肼(5.97克,含量:40%,47.76毫摩尔)和0.06克10%的钯碳,回流两小时。过滤,滤液加入乙酸乙酯和水萃取,饱和食盐水洗涤,无水硫酸镁干燥,蒸掉溶剂,残余物进行柱层析(乙酸乙酯:石油醚=1:10),得1.02克油状物。
(3)化合物4的合成
Figure PCTCN2014091998-appb-000011
反应瓶中加入2-甲基-3-(2-丁氧基)苯胺(240毫克,1.35毫摩尔)、三乙胺(160毫克,1.62毫摩尔)和10毫升二氯甲烷,室温搅拌下滴加1-甲基-3-二氟甲基吡唑-4-甲酰氯(310毫克,1.62毫摩尔)的二氯甲烷溶液10毫升。滴毕,室温下反应,3小时后反应完毕。反应液倾入30毫升水中,取有机层,有机层分别用饱和碳酸氢钠水溶液、饱和食盐水洗涤,无水硫酸镁干燥,减压蒸尽溶剂。残余物通过柱色谱提纯(淋洗液:乙酸乙酯:石油醚=1:2),得190毫克化合物4,收率43.5%。
实施例3化合物9的制备:
(1)1-甲基-3-二氟甲基-N-(3-羟基苯基)-1H-吡唑-4-酰胺的合成
Figure PCTCN2014091998-appb-000012
反应瓶中加入3-氨基苯酚(1.09克,9.99毫摩尔)、三乙胺(1.21克,11.99毫摩尔)和15毫升四氢呋喃,室温搅拌下滴加1-甲基-3-二氟甲基吡唑-4-甲酰氯(2.33克,11.99毫摩尔)的四氢呋喃溶液15毫升。滴毕,室温下反应2小时。加入乙酸乙酯和水萃取,有机层用饱和食盐水洗涤,无水硫酸镁干燥。蒸干溶剂,残余物进行柱层析(乙酸乙酯:石油醚=1:2),得1.48克白色固体。
(2)化合物9的合成
Figure PCTCN2014091998-appb-000013
反应瓶中加入1-甲基-3-二氟甲基-N-(3-羟基苯基)-1H-吡唑-4-酰胺(300毫克,1.12毫摩尔)、碳酸钾(0.19克,1.35毫摩尔)、2-溴戊烷(203毫克,1.35毫摩尔)和10毫升DMF,室温反应24小时。停止反应,加入乙酸乙酯和水萃取,有机层用饱和食盐水洗涤,无水硫酸镁干燥。蒸干溶剂,残余物进行柱层析(乙酸乙酯:石油醚=1:2),得0.17克黄色固体,收率45.1%。
实施例4化合物11的制备:
Figure PCTCN2014091998-appb-000014
反应瓶中加入2-甲基-3-基苯胺(200毫克,1.03毫摩尔)、三乙胺(125毫克,1.24毫摩尔)和12毫升二氯甲烷,室温搅拌下滴加1-甲基-3-二氟甲基吡唑-4-甲酰氯(241毫克,1.24毫摩尔)的二氯甲烷溶液10毫升。滴毕,室温下反应,3小时后反应完毕。反应液倾入30毫升水中,取有机层,有机层分别用饱和碳酸氢钠水溶液、饱和食盐水洗涤,无水硫酸镁干燥,减压蒸尽溶剂。残余物通过柱色谱提纯(淋洗液:乙酸乙酯:石油醚=1:2),得250毫克化合物,收率65.3%。
实施例5化合物21的制备:
Figure PCTCN2014091998-appb-000015
反应瓶中加入3-异丙氧基-2-(2-甲基丙烯基)苯胺(220毫克,1.07毫摩尔)、三乙胺(130毫克,1.29毫摩尔)和12毫升二氯甲烷,室温搅拌下滴加1-甲基-3-二氟甲基吡唑-4-甲酰氯(250毫克,1.29毫摩尔)的二氯甲烷溶液10毫升。滴毕,室温下反应,3小时后反应完毕。反应液倾入30毫升水中,取有机层,有机层分别用饱和碳酸氢钠水溶液、饱和食盐水洗涤,无水硫酸镁干燥,减压蒸尽溶剂。残余物通过柱色谱提纯(淋洗液:乙酸乙酯:石油醚=1:3),得200毫克化合物,收率46.23%。
本发明的其他通式I化合物可参照上述方法合成。
生物活性测定实施例
实施例6杀菌活性的测定
用本发明化合物对植物的多种病害进行了试验。试验的方法如下:
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。用本发明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,处理后第二天进行病害接种。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,将不需要保湿培养的植物直接在温室内接种并培养。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。
部分测试结果如下:
对小麦白粉病的防效:
按照以上测试方法,部分供试的化合物中,下列化合物在浓度为400ppm时防治效果较好,防效≥80%:化合物9。
对黄瓜炭疽病的防效:
按照以上测试方法,部分供试的化合物中,下列化合物在浓度为400ppm时防治效果较好,防效≥80%:化合物3、11。
对黄瓜霜霉病的防效:
按照以上测试方法,选取本发明化合物2和11与已知化合物KC1、KC2、KC3和KC4(依次为农药学学报,2011,13(6):576-580中化合物7g、7f和7a,CN1646494A中化合物11))进行防治黄瓜霜霉病活性的平行测定(对照化合物均为自制,结构经核磁共振氢谱确认),试验结果见表2。
表2:本发明化合物2和11与已知化合物对黄瓜霜霉病防效的比较
Figure PCTCN2014091998-appb-000016
对玉米锈病的防效:
按照以上测试方法,部分供试的化合物中,下列化合物在浓度为400ppm时防治效果较好,防效≥80%:化合物1、2、3、7、9、11和21。
按照以上测试方法,选取化合物1、3、7、9、11和21与已知化合物KC1、KC2、KC3和KC4进行了防治玉米锈病活性的平行测定。试验结果见表3。
表3:部分本发明化合物与已知化合物对玉米锈病防效的比较
Figure PCTCN2014091998-appb-000017

Claims (8)

  1. 一种吡唑酰胺类化合物,如通式I所示:
    Figure PCTCN2014091998-appb-100001
    式中:
    R1选自氢、C1-C4的烷基、C2-C6烯基-C1-C6的烷基;
    R2和R3可相同或不同,分别独立的选自C1-C6的烷基。
  2. 按照权利要求1所述的化合物,其特征在于,通式I中:
    R1选自氢、C1-C4的烷基、C2-C4烯基-C1-C3的烷基;
    R2和R3可相同或不同,分别独立的选自甲基、乙基、丙基、异丙基、丁基或戊基。
  3. 按照权利要求1所述的化合物,其特征在于,通式I中:
    R1选自氢、甲基、乙基、丙基、异丙基、正丁基、异丁基、仲丁基、C2-C4烯基-C1-C3的烷基;
    R2选自甲基或乙基;
    R3选自甲基、乙基、丙基、异丙基、丁基或戊基。
  4. 按照权利要求1所述的化合物,其特征在于,通式I中:
    R1选自氢、甲基、异丁基、烯丙基、2-甲基烯丙基、丁-3-烯-2-基或2-甲基-丁-3-烯-2-基;
    R2选自甲基或乙基;
    R3选自甲基、乙基、丙基、丁基或戊基。
  5. 一种按照权利要求1所述的通式I化合物的制备方法,反应式如下:
    Figure PCTCN2014091998-appb-100002
    Figure PCTCN2014091998-appb-100003
    式中:
    X代表卤素;
    R1选自氢、C1-C4的烷基、C2-C6烯基-C1-C6的烷基;
    R2和R3可相同或不同,分别独立的选自C1-C6的烷基。
  6. 一种按照权利要求1所述的通式I化合物作为农业或林业领域中用作制备杀菌剂药物的用途。
  7. 一种杀菌组合物,含有如权利要求1所述的通式I所示化合物为活性组分和农业或林业上可接受的载体,组合物中作为活性组分的通式I化合物的重量含量为1-99%。
  8. 一种控制病菌的方法,其特征在于:将权利要求7所述的组合物以每公顷10克到1000克的有效剂量施于需要控制的病菌或其生长的介质上。
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