CN112939939B - 2- (4-chlorophenyl) pyridine compound and application thereof in pesticides - Google Patents
2- (4-chlorophenyl) pyridine compound and application thereof in pesticides Download PDFInfo
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- -1 2- (4-chlorophenyl) pyridine compound Chemical class 0.000 title claims abstract description 19
- 239000000575 pesticide Substances 0.000 title claims abstract description 18
- 150000001875 compounds Chemical class 0.000 claims abstract description 88
- 235000013311 vegetables Nutrition 0.000 claims abstract description 12
- 241000607479 Yersinia pestis Species 0.000 claims abstract description 8
- 125000004435 hydrogen atom Chemical group [H]* 0.000 claims abstract description 7
- 125000004430 oxygen atom Chemical group O* 0.000 claims abstract description 7
- 229910052717 sulfur Chemical group 0.000 claims abstract description 7
- 125000004434 sulfur atom Chemical group 0.000 claims abstract description 7
- 125000004178 (C1-C4) alkyl group Chemical group 0.000 claims abstract description 6
- 125000000229 (C1-C4)alkoxy group Chemical group 0.000 claims abstract description 6
- 125000005843 halogen group Chemical group 0.000 claims abstract description 4
- 230000035784 germination Effects 0.000 claims description 10
- 240000008067 Cucumis sativus Species 0.000 claims description 8
- 235000010799 Cucumis sativus var sativus Nutrition 0.000 claims description 8
- 235000008534 Capsicum annuum var annuum Nutrition 0.000 claims description 7
- 240000008384 Capsicum annuum var. annuum Species 0.000 claims description 7
- 235000007688 Lycopersicon esculentum Nutrition 0.000 claims description 7
- 240000003768 Solanum lycopersicum Species 0.000 claims description 7
- 240000006677 Vicia faba Species 0.000 claims description 6
- 235000010749 Vicia faba Nutrition 0.000 claims description 6
- 235000002098 Vicia faba var. major Nutrition 0.000 claims description 6
- 241000344246 Tetranychus cinnabarinus Species 0.000 claims description 5
- 125000001495 ethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 claims description 5
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 claims description 5
- 240000007087 Apium graveolens Species 0.000 claims description 4
- 235000015849 Apium graveolens Dulce Group Nutrition 0.000 claims description 4
- 235000010591 Appio Nutrition 0.000 claims description 4
- 241001124076 Aphididae Species 0.000 claims description 3
- WKBOTKDWSSQWDR-UHFFFAOYSA-N Bromine atom Chemical group [Br] WKBOTKDWSSQWDR-UHFFFAOYSA-N 0.000 claims description 3
- 241001477931 Mythimna unipuncta Species 0.000 claims description 3
- 229910052801 chlorine Inorganic materials 0.000 claims description 3
- 125000001309 chloro group Chemical group Cl* 0.000 claims description 3
- 239000002917 insecticide Substances 0.000 claims description 3
- 125000000956 methoxy group Chemical group [H]C([H])([H])O* 0.000 claims description 3
- 238000002360 preparation method Methods 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 8
- 230000007226 seed germination Effects 0.000 abstract description 6
- 230000000607 poisoning effect Effects 0.000 abstract description 4
- 230000015572 biosynthetic process Effects 0.000 abstract description 3
- 238000003786 synthesis reaction Methods 0.000 abstract description 3
- 230000000003 effect on germination Effects 0.000 abstract description 2
- 239000000243 solution Substances 0.000 description 34
- 238000005481 NMR spectroscopy Methods 0.000 description 25
- 238000006243 chemical reaction Methods 0.000 description 25
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 20
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 18
- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Chemical compound CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 description 18
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 18
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 18
- 229910052739 hydrogen Inorganic materials 0.000 description 18
- 239000001257 hydrogen Substances 0.000 description 18
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 17
- 238000000655 nuclear magnetic resonance spectrum Methods 0.000 description 17
- 238000001228 spectrum Methods 0.000 description 17
- 239000000543 intermediate Substances 0.000 description 13
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 12
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 12
- 239000012153 distilled water Substances 0.000 description 12
- 238000001819 mass spectrum Methods 0.000 description 12
- 239000000203 mixture Substances 0.000 description 12
- 239000008247 solid mixture Substances 0.000 description 12
- JUJWROOIHBZHMG-UHFFFAOYSA-N Pyridine Chemical compound C1=CC=NC=C1 JUJWROOIHBZHMG-UHFFFAOYSA-N 0.000 description 10
- IAZDPXIOMUYVGZ-UHFFFAOYSA-N Dimethylsulphoxide Chemical compound CS(C)=O IAZDPXIOMUYVGZ-UHFFFAOYSA-N 0.000 description 8
- 238000003756 stirring Methods 0.000 description 7
- 239000000126 substance Substances 0.000 description 7
- BUZYGTVTZYSBCU-UHFFFAOYSA-N 1-(4-chlorophenyl)ethanone Chemical compound CC(=O)C1=CC=C(Cl)C=C1 BUZYGTVTZYSBCU-UHFFFAOYSA-N 0.000 description 6
- DQFBYFPFKXHELB-UHFFFAOYSA-N Chalcone Natural products C=1C=CC=CC=1C(=O)C=CC1=CC=CC=C1 DQFBYFPFKXHELB-UHFFFAOYSA-N 0.000 description 6
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 6
- 235000005513 chalcones Nutrition 0.000 description 6
- 239000012043 crude product Substances 0.000 description 6
- 239000003480 eluent Substances 0.000 description 6
- CUONGYYJJVDODC-UHFFFAOYSA-N malononitrile Chemical compound N#CCC#N CUONGYYJJVDODC-UHFFFAOYSA-N 0.000 description 6
- 239000011259 mixed solution Substances 0.000 description 6
- 239000003208 petroleum Substances 0.000 description 6
- LPNYRYFBWFDTMA-UHFFFAOYSA-N potassium tert-butoxide Chemical compound [K+].CC(C)(C)[O-] LPNYRYFBWFDTMA-UHFFFAOYSA-N 0.000 description 6
- 238000001556 precipitation Methods 0.000 description 6
- 239000011541 reaction mixture Substances 0.000 description 6
- 238000002390 rotary evaporation Methods 0.000 description 6
- 239000000741 silica gel Substances 0.000 description 6
- 229910002027 silica gel Inorganic materials 0.000 description 6
- 238000010898 silica gel chromatography Methods 0.000 description 6
- OVYTZAASVAZITK-UHFFFAOYSA-M sodium;ethanol;hydroxide Chemical compound [OH-].[Na+].CCO OVYTZAASVAZITK-UHFFFAOYSA-M 0.000 description 6
- 239000002904 solvent Substances 0.000 description 6
- DQFBYFPFKXHELB-VAWYXSNFSA-N trans-chalcone Chemical compound C=1C=CC=CC=1C(=O)\C=C\C1=CC=CC=C1 DQFBYFPFKXHELB-VAWYXSNFSA-N 0.000 description 6
- YTPLMLYBLZKORZ-UHFFFAOYSA-N Thiophene Chemical compound C=1C=CSC=1 YTPLMLYBLZKORZ-UHFFFAOYSA-N 0.000 description 5
- 238000012360 testing method Methods 0.000 description 5
- YLQBMQCUIZJEEH-UHFFFAOYSA-N Furan Chemical group C=1C=COC=1 YLQBMQCUIZJEEH-UHFFFAOYSA-N 0.000 description 4
- 241000238631 Hexapoda Species 0.000 description 4
- 244000046052 Phaseolus vulgaris Species 0.000 description 4
- 235000010627 Phaseolus vulgaris Nutrition 0.000 description 4
- 125000004432 carbon atom Chemical group C* 0.000 description 4
- 239000013078 crystal Substances 0.000 description 4
- 230000000749 insecticidal effect Effects 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 235000010482 polyoxyethylene sorbitan monooleate Nutrition 0.000 description 4
- 229920000053 polysorbate 80 Polymers 0.000 description 4
- UMJSCPRVCHMLSP-UHFFFAOYSA-N pyridine Natural products COC1=CC=CN=C1 UMJSCPRVCHMLSP-UHFFFAOYSA-N 0.000 description 4
- 239000001387 apium graveolens Substances 0.000 description 3
- 239000007864 aqueous solution Substances 0.000 description 3
- 230000004071 biological effect Effects 0.000 description 3
- 238000007865 diluting Methods 0.000 description 3
- 239000003814 drug Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000002474 experimental method Methods 0.000 description 3
- 231100000053 low toxicity Toxicity 0.000 description 3
- 239000013642 negative control Substances 0.000 description 3
- 230000001737 promoting effect Effects 0.000 description 3
- 238000012827 research and development Methods 0.000 description 3
- WHXIEVDMCNQVOV-UHFFFAOYSA-N 2-(4-chlorophenyl)pyridine Chemical class C1=CC(Cl)=CC=C1C1=CC=CC=N1 WHXIEVDMCNQVOV-UHFFFAOYSA-N 0.000 description 2
- 241001425390 Aphis fabae Species 0.000 description 2
- 241000721621 Myzus persicae Species 0.000 description 2
- 239000003905 agrochemical Substances 0.000 description 2
- 125000003545 alkoxy group Chemical group 0.000 description 2
- 125000000217 alkyl group Chemical group 0.000 description 2
- 230000000259 anti-tumor effect Effects 0.000 description 2
- 230000000840 anti-viral effect Effects 0.000 description 2
- 230000015556 catabolic process Effects 0.000 description 2
- 238000006731 degradation reaction Methods 0.000 description 2
- 230000002363 herbicidal effect Effects 0.000 description 2
- 238000005286 illumination Methods 0.000 description 2
- 125000001449 isopropyl group Chemical group [H]C([H])([H])C([H])(*)C([H])([H])[H] 0.000 description 2
- 125000004108 n-butyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])* 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 125000001436 propyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])[H] 0.000 description 2
- 125000002914 sec-butyl group Chemical group [H]C([H])([H])C([H])([H])C([H])(*)C([H])([H])[H] 0.000 description 2
- 239000008399 tap water Substances 0.000 description 2
- 235000020679 tap water Nutrition 0.000 description 2
- 125000000999 tert-butyl group Chemical group [H]C([H])([H])C(*)(C([H])([H])[H])C([H])([H])[H] 0.000 description 2
- 150000003577 thiophenes Chemical class 0.000 description 2
- VAUMDUIUEPIGHM-UHFFFAOYSA-N 5-Methyl-2-thiophenecarboxaldehyde Chemical compound CC1=CC=C(C=O)S1 VAUMDUIUEPIGHM-UHFFFAOYSA-N 0.000 description 1
- WJTFHWXMITZNHS-UHFFFAOYSA-N 5-bromofuran-2-carbaldehyde Chemical compound BrC1=CC=C(C=O)O1 WJTFHWXMITZNHS-UHFFFAOYSA-N 0.000 description 1
- GFBVUFQNHLUCPX-UHFFFAOYSA-N 5-bromothiophene-2-carbaldehyde Chemical compound BrC1=CC=C(C=O)S1 GFBVUFQNHLUCPX-UHFFFAOYSA-N 0.000 description 1
- OUDFNZMQXZILJD-UHFFFAOYSA-N 5-methyl-2-furaldehyde Chemical compound CC1=CC=C(C=O)O1 OUDFNZMQXZILJD-UHFFFAOYSA-N 0.000 description 1
- 241000238876 Acari Species 0.000 description 1
- 102000004190 Enzymes Human genes 0.000 description 1
- 108090000790 Enzymes Proteins 0.000 description 1
- 240000008042 Zea mays Species 0.000 description 1
- 235000005824 Zea mays ssp. parviglumis Nutrition 0.000 description 1
- 235000002017 Zea mays subsp mays Nutrition 0.000 description 1
- 238000007605 air drying Methods 0.000 description 1
- 230000000844 anti-bacterial effect Effects 0.000 description 1
- 230000001430 anti-depressive effect Effects 0.000 description 1
- 230000002924 anti-infective effect Effects 0.000 description 1
- 230000003110 anti-inflammatory effect Effects 0.000 description 1
- 230000002365 anti-tubercular Effects 0.000 description 1
- 239000000935 antidepressant agent Substances 0.000 description 1
- 229940005513 antidepressants Drugs 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003115 biocidal effect Effects 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 235000005822 corn Nutrition 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 229940079593 drug Drugs 0.000 description 1
- 230000003203 everyday effect Effects 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- CNUDBTRUORMMPA-UHFFFAOYSA-N formylthiophene Chemical compound O=CC1=CC=CS1 CNUDBTRUORMMPA-UHFFFAOYSA-N 0.000 description 1
- HYBBIBNJHNGZAN-UHFFFAOYSA-N furfural Chemical compound O=CC1=CC=CO1 HYBBIBNJHNGZAN-UHFFFAOYSA-N 0.000 description 1
- 150000002391 heterocyclic compounds Chemical class 0.000 description 1
- 150000002611 lead compounds Chemical class 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000000691 measurement method Methods 0.000 description 1
- 230000008635 plant growth Effects 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 229940126409 proton pump inhibitor Drugs 0.000 description 1
- 239000000612 proton pump inhibitor Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000001502 supplementing effect Effects 0.000 description 1
- 239000012085 test solution Substances 0.000 description 1
- 229930192474 thiophene Natural products 0.000 description 1
- 230000024883 vasodilation Effects 0.000 description 1
- 238000009333 weeding Methods 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D401/00—Heterocyclic compounds containing two or more hetero rings, having nitrogen atoms as the only ring hetero atoms, at least one ring being a six-membered ring with only one nitrogen atom
- C07D401/02—Heterocyclic compounds containing two or more hetero rings, having nitrogen atoms as the only ring hetero atoms, at least one ring being a six-membered ring with only one nitrogen atom containing two hetero rings
- C07D401/04—Heterocyclic compounds containing two or more hetero rings, having nitrogen atoms as the only ring hetero atoms, at least one ring being a six-membered ring with only one nitrogen atom containing two hetero rings directly linked by a ring-member-to-ring-member bond
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01N—PRESERVATION 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
- A01N43/00—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds
- A01N43/34—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having rings with one nitrogen atom as the only ring hetero atom
- A01N43/40—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having rings with one nitrogen atom as the only ring hetero atom six-membered rings
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D409/00—Heterocyclic compounds containing two or more hetero rings, at least one ring having sulfur atoms as the only ring hetero atoms
- C07D409/02—Heterocyclic compounds containing two or more hetero rings, at least one ring having sulfur atoms as the only ring hetero atoms containing two hetero rings
- C07D409/04—Heterocyclic compounds containing two or more hetero rings, at least one ring having sulfur atoms as the only ring hetero atoms containing two hetero rings directly linked by a ring-member-to-ring-member bond
Abstract
The invention relates to a 2- (4-chlorophenyl) pyridine compound and application thereof in pesticides, and belongs to the technical field of pesticides. The structural formula of the 2- (4-chlorophenyl) pyridine compound is shown in the formula (I): wherein X is an oxygen atom or a sulfur atom; r is a hydrogen atom, a halogen atom, a C1-C4 alkyl group or a C1-C4 alkoxy group. The compound has simple synthesis process, good poisoning effect on pests, good promotion effect on germination of vegetable seeds, and no report is found in the existing known pesticides and seed germination promoters.
Description
Technical Field
The invention relates to a 2- (4-chlorophenyl) pyridine compound and application thereof in pesticides, and belongs to the technical field of pesticides.
Background
It is well known that furan rings are electron rich systems that readily form intermolecular hydrogen bonds with various biological enzymes, and therefore, some furan ring-containing compounds, whether natural or synthetic, have a broad spectrum of biological activities, such as antibacterial, antiviral, antitumor, insecticidal, herbicidal, and the like. Meanwhile, the compounds generally have the characteristics of high efficiency, low toxicity, safety to non-target organisms, easy degradation in the environment, difficult generation of resistance of harmful organisms and the like, so that the compounds containing furan rings have more and more important roles in the research and development processes of pesticides.
Thiophene is an important member of heterocyclic compounds and plays a very important role. Thiophene derivatives have also been studied to play a very major role in medicine and agrochemical. Thiophene derivatives have various biological activities such as bacteriostasis, antiviral, antitumor, antiinflammatory, insecticidal and herbicidal. Meanwhile, the thiophene ring-containing compound has the characteristics of high efficiency, low toxicity, safety to non-target organisms, easy degradation in the environment, difficult resistance of harmful organisms and the like, and has the characteristics of novel structure and excellent performance. Therefore, in the research and development process of pesticides, thiophene ring-containing compounds are receiving more extensive attention, and are hot spots for creating new pesticides.
Pyridine and its derivatives are important chemical raw materials or intermediates, and have various biological activities, such as antibiosis, disinsection, deratization, weeding, plant growth regulation, antidepressant, antiinfection, proton pump inhibitor, antituberculosis, vasodilation, central nervous excitation, etc. Therefore, pyridine and its derivatives are widely used for the synthesis of pyridine drugs in pharmaceutical and agricultural chemical products. Meanwhile, compounds containing pyridine rings are generally high-efficiency, low-toxicity, safe to non-target organisms, easy to degrade in the environment, difficult for harmful organisms to generate resistance and the like, and compounds with novel structures and excellent performances are continuously introduced. Therefore, in the research and development process of pesticides, pyridine ring-containing compounds are receiving more extensive attention, and are becoming hot spots for the creation of new pesticides.
Up to now, 2- (4-chlorophenyl) pyridine compounds are not reported to be used as pesticides and vegetable seed germination promoters.
Disclosure of Invention
The first technical problem to be solved by the invention is to provide a novel 2- (4-chlorophenyl) pyridine compound.
In order to solve the first technical problem of the invention, the structural formula of the 2- (4-chlorophenyl) pyridine compound is shown as the formula (I):
wherein X is an oxygen atom or a sulfur atom; r is a hydrogen atom, a halogen atom, a C1-C4 alkyl group or a C1-C4 alkoxy group.
"C1-C4 alkyl" refers to straight or branched chain alkyl groups having 1 to 4 carbon atoms, such as methyl, ethyl, propyl, isopropyl, n-butyl, sec-butyl, tert-butyl, and the like. "C1-C4 alkoxy" refers to straight or branched chain alkoxy groups having 1 to 4 carbon atoms, such as methoxy, ethoxy, propoxy, isopropoxy, n-butoxy, sec-butoxy, tert-butoxy and the like.
In a specific embodiment, the R is a hydrogen atom, a chlorine atom, a bromine atom, a methyl group, a methoxy group or an ethyl group.
In one embodiment, the X is an oxygen atom or a sulfur atom.
In one specific embodiment, the 2- (4-chlorophenyl) pyridine compound has the structural formula:
the second technical problem to be solved by the invention is to provide the application of the compound in preparing agricultural pesticides.
In a specific embodiment, the pest controlled by the agricultural insecticide is myxoplasma, tetranychus cinnabarinus or aphis fabae.
The second technical problem to be solved by the invention is to provide the application of the compound in preparing a seed germination promoter.
In one embodiment, the seed is a vegetable seed.
In a specific embodiment, the vegetable seed is cucumber seed, green pepper seed, tomato seed or celery seed.
The beneficial effects are that:
according to the invention, furan rings or thiophene rings are introduced into the molecular structure of pyridine, some 2- (4-chlorophenyl) pyridine compounds are synthesized, and some active compounds or active lead compounds with novel structures and excellent activity are discovered, so that a good foundation is laid for the creation of new pesticides.
The compound has simple synthesis process, good poisoning effect on pests, good promotion effect on germination of vegetable seeds, and no report is found in the existing known pesticides and seed germination promoters.
Drawings
FIG. 1 is a nuclear magnetic resonance hydrogen spectrum of the compound of example 1.
FIG. 2 is an enlarged partial view of nuclear magnetic resonance hydrogen spectrum of the compound of example 1.
FIG. 3 is a nuclear magnetic resonance spectrum of the compound of example 1.
FIG. 4 is a high resolution mass spectrum of the compound of example 1.
FIG. 5 is a nuclear magnetic resonance hydrogen spectrum of the compound of example 2.
FIG. 6 is an enlarged partial view of nuclear magnetic resonance hydrogen spectrum of the compound of example 2.
FIG. 7 is a nuclear magnetic resonance spectrum of the compound of example 2.
FIG. 8 is a high resolution mass spectrum of the compound of example 2.
FIG. 9 is a nuclear magnetic resonance hydrogen spectrum of the compound of example 3.
FIG. 10 is an enlarged partial view of nuclear magnetic resonance hydrogen spectrum of the compound of example 3.
FIG. 11 is a nuclear magnetic resonance spectrum of the compound of example 3.
FIG. 12 is a high resolution mass spectrum of the compound of example 3.
FIG. 13 is a nuclear magnetic resonance hydrogen spectrum of the compound of example 4.
FIG. 14 is an enlarged partial view of nuclear magnetic resonance hydrogen spectrum of the compound of example 4.
FIG. 15 is a nuclear magnetic resonance spectrum of the compound of example 4.
FIG. 16 is a high resolution mass spectrum of the compound of example 4.
FIG. 17 is a nuclear magnetic resonance hydrogen spectrum of the compound of example 5.
FIG. 18 is an enlarged partial view of nuclear magnetic resonance hydrogen spectrum of the compound of example 5.
FIG. 19 is a nuclear magnetic resonance spectrum of the compound of example 5.
FIG. 20 is a high resolution mass spectrum of the compound of example 5.
FIG. 21 is a nuclear magnetic resonance hydrogen spectrum of the compound of example 6.
FIG. 22 is an enlarged partial view of the nuclear magnetic resonance spectrum of the compound of example 6.
FIG. 23 is a nuclear magnetic resonance spectrum of the compound of example 6.
FIG. 24 is a high resolution mass spectrum of the compound of example 6.
Detailed Description
In order to solve the first technical problem of the invention, the structural formula of the 2- (4-chlorophenyl) pyridine compound is shown as the formula (I):
wherein X is an oxygen atom or a sulfur atom; r is a hydrogen atom, a halogen atom, a C1-C4 alkyl group or a C1-C4 alkoxy group.
"C1-C4 alkyl" refers to straight or branched chain alkyl groups having 1 to 4 carbon atoms, such as methyl, ethyl, propyl, isopropyl, n-butyl, sec-butyl, tert-butyl, and the like. "C1-C4 alkoxy" refers to straight or branched chain alkoxy groups having 1 to 4 carbon atoms, such as methoxy, ethoxy, propoxy, isopropoxy, n-butoxy, sec-butoxy, tert-butoxy and the like.
The main reaction equation in the preparation process of the compound with the general formula (I) is as follows:
r, X in the formula is as defined above.
In a specific embodiment, the R is a hydrogen atom, a chlorine atom, a bromine atom, a methyl group, a methoxy group or an ethyl group.
In one embodiment, the X is an oxygen atom or a sulfur atom.
In one specific embodiment, the 2- (4-chlorophenyl) pyridine compound has the structural formula:
the second technical problem to be solved by the invention is to provide the application of the compound in preparing agricultural pesticides.
In a specific embodiment, the pest controlled by the agricultural insecticide is myxoplasma, tetranychus cinnabarinus or aphis fabae.
The second technical problem to be solved by the invention is to provide the application of the compound in preparing a seed germination promoter.
In one embodiment, the seed is a vegetable seed.
In a specific embodiment, the vegetable seed is cucumber seed, green pepper seed, tomato seed or celery seed.
The following describes the invention in more detail with reference to examples, which are not intended to limit the invention thereto.
Example 1
Compounds of formula (I)Is prepared from
10mmol of 4-chloroacetophenone was dissolved in 10mL of absolute ethanol, and 10mL of 10% NaOH ethanol solution was added thereto. Stirring in ice bath, dropping 10mmol of furan-2-formaldehyde and 10mL of absolute ethyl alcohol into the above mixed solution slowly by using a constant pressure dropping funnel, reacting at 0-5 ℃, and checking whether the reaction is completed by using a thin layer silica gel plate (TLC). After the completion of the reaction, 10 times of distilled water was added to the mixture, the pH of the solution was adjusted to neutrality with a 10% hydrochloric acid solution, precipitation was observed, and the solution was filtered and washed with distilled water. The crude product obtained is recrystallized from absolute ethanol to give chalcone intermediates.
1mmol of the intermediate prepared in the home-made state and 1mmol of malononitrile were dissolved in 20mL of methanol, to which 1mmol of potassium tert-butoxide was added. After reacting at 30-40 ℃ for 40-60 minutes, 5mmol of NaOH was added to the reaction mixture, and the reaction was checked by TLC. After the reaction is completed, the solvent is removed by rotary evaporation to obtain a solid mixture, and the solid mixture is separated by silica gel column chromatography (eluent is a mixture of ethyl acetate and petroleum ether with the volume ratio of 1:100) to obtain the target compound, wherein the target compound has the following physical and chemical properties:
colorless crystals; the yield is 90%; 1 H NMR(400MHz,DMSO-d 6 )δ(ppm):8.21(2H,d,J＝8.4Hz),7.90-7.89(2H,m),7.57(2H,d,J＝8.4Hz),7.43(1H,d,J＝3.2Hz),7.02(1H,d,J＝0.8Hz),6.71(1H,dd,J＝3.2,1.6Hz),3.98(3H,s)； 13 C NMR(100MHz,DMSO-d 6 )δ(ppm):164.54,153.59,151.10,145.20,141.33,137.35,134.49,129.15,128.77,112.97,110.85,108.28,103.03,53.65；HRMS(ESI)m/z:Calcd for C 16 H 12 ClNO 2 [M+H] + :286.0629,Found:286.0621.
the nuclear magnetic hydrogen spectrum of the compound is shown in figure 1, and the overlapped or dense part in figure 1 is shown in figure 2. The nuclear magnetic resonance spectrogram of the compound is shown in fig. 3, and a partial enlarged view of an overlapped or dense part in the nuclear magnetic resonance spectrogram is also shown in fig. 3. The high resolution mass spectrum of the compound is shown in figure 4.
Example 2
Compounds of formula (I)Is prepared from
10mmol of 4-chloroacetophenone was dissolved in 10mL of absolute ethanol, and 10mL of 10% NaOH ethanol solution was added thereto. Stirring in ice bath, dropping 10mmol of 5-bromofuran-2-formaldehyde and 10mL of absolute ethyl alcohol into the above mixed solution slowly by using a constant pressure dropping funnel, reacting at 0-5 ℃, and checking whether the reaction is completed by using a thin layer silica gel plate (TLC). After the completion of the reaction, 10 times of distilled water was added to the mixture, the pH of the solution was adjusted to neutrality with a 10% hydrochloric acid solution, precipitation was observed, and the solution was filtered and washed with distilled water. The crude product obtained is recrystallized from absolute ethanol to give chalcone intermediates.
1mmol of the intermediate prepared in the home-made state and 1mmol of malononitrile were dissolved in 20mL of methanol, to which 1mmol of potassium tert-butoxide was added. After reacting at 30-40 ℃ for 40-60 minutes, 5mmol of NaOH was added to the reaction mixture, and the reaction was checked by TLC. After the reaction is completed, the solvent is removed by rotary evaporation to obtain a solid mixture, and the solid mixture is separated by silica gel column chromatography (eluent is a mixture of ethyl acetate and petroleum ether with the volume ratio of 1:100) to obtain the target compound, wherein the target compound has the following physical and chemical properties:
a pale yellow powder; the yield is 86%; 1 H NMR(400MHz,DMSO-d 6 )δ(ppm):8.21(2H,d,J＝8.8Hz),7.84(1H,d,J＝1.2Hz),7.56(2H,d,J＝8.8Hz),7.48(1H,d,J＝3.6Hz),6.98(1H,d,J＝1.2Hz),6.83(1H,d,J＝3.6Hz),3.98(3H,s)； 13 C NMR(100MHz,DMSO-d 6 )δ(ppm):164.52,153.74,153.22,140.22,137.20,134.57,129.15,128.80,124.28,115.02,113.40,107.79,102.83,53.73；HRMS(ESI)m/z:Calcd for C 16 H 11 BrClNO 2 [M+H] + :363.9734,Found:363.9733.
the nuclear magnetic hydrogen spectrum of the compound is shown in figure 5, and the overlapped or dense part in figure 5 is shown in figure 6. The nuclear magnetic resonance spectrum of the compound is shown in fig. 7, and a partial enlarged view of an overlapped or dense part in the nuclear magnetic resonance spectrum is also shown in fig. 7. The high resolution mass spectrum of the compound is shown in figure 8.
Example 3
Compounds of formula (I)Is prepared from
10mmol of 4-chloroacetophenone was dissolved in 10mL of absolute ethanol, and 10mL of 10% NaOH ethanol solution was added thereto. Stirring in ice bath, dropping 10mmol of 5-methylfuran-2-formaldehyde and 10mL of absolute ethyl alcohol into the above mixed solution slowly by using a constant pressure dropping funnel, reacting at 0-5 ℃, and checking whether the reaction is completed by using a thin layer silica gel plate (TLC). After the completion of the reaction, 10 times of distilled water was added to the mixture, the pH of the solution was adjusted to neutrality with a 10% hydrochloric acid solution, precipitation was observed, and the solution was filtered and washed with distilled water. The crude product obtained is recrystallized from absolute ethanol to give chalcone intermediates.
1mmol of the intermediate prepared in the home-made state and 1mmol of malononitrile were dissolved in 20mL of methanol, to which 1mmol of potassium tert-butoxide was added. After reacting at 30-40 ℃ for 40-60 minutes, 5mmol of NaOH was added to the reaction mixture, and the reaction was checked by TLC. After the reaction is completed, the solvent is removed by rotary evaporation to obtain a solid mixture, and the solid mixture is separated by silica gel column chromatography (eluent is a mixture of ethyl acetate and petroleum ether with the volume ratio of 1:100) to obtain the target compound, wherein the target compound has the following physical and chemical properties:
colorless needle-like crystals; yield 87%; 1 H NMR(400MHz,DMSO-d 6 )δ(ppm):8.19(2H,d,J＝8.8Hz),7.80(1H,d,J＝0.8Hz),7.55(2H,d,J＝8.4Hz),7.29(1H,d,J＝3.6Hz),6.93(1H,s),6.31(1H,dd,J＝3.2,0.8Hz),3.97(3H,s),2.38(3H,s)； 13 C NMR(100MHz,DMSO-d 6 )δ(ppm):164.53,154.35,153.43,149.52,141.44,137.42,134.40,129.12,128.72,111.97,109.28,107.82,102.36,53.60,13.97；HRMS(ESI)m/z:Calcd for C 17 H 14 ClNO 2 [M+H] + :300.0786,Found:300.0775.
the nuclear magnetic hydrogen spectrum of the compound is shown in figure 9, and the overlapped or dense part in figure 9 is shown in figure 10. The nuclear magnetic resonance spectrum of the compound is shown in fig. 11, and a partial enlarged view of an overlapped or dense part in the nuclear magnetic resonance spectrum is also shown in fig. 11. The high resolution mass spectrum of the compound is shown in figure 12.
Example 4
Compounds of formula (I)Is prepared from
10mmol of 4-chloroacetophenone was dissolved in 10mL of absolute ethanol, and 10mL of 10% NaOH ethanol solution was added thereto. Stirring in ice bath, dropping 10mmol thiophene-2-formaldehyde and 10mL absolute ethanol into the above mixed solution slowly using constant pressure dropping funnel, reacting at 0-5 deg.C, and checking whether the reaction is completed with thin layer silica gel plate (TLC). After the completion of the reaction, 10 times of distilled water was added to the mixture, the pH of the solution was adjusted to neutrality with a 10% hydrochloric acid solution, precipitation was observed, and the solution was filtered and washed with distilled water. The crude product obtained is recrystallized from absolute ethanol to give chalcone intermediates.
1mmol of the intermediate prepared in the home-made state and 1mmol of malononitrile were dissolved in 20mL of methanol, to which 1mmol of potassium tert-butoxide was added. After reacting at 30-40 ℃ for 40-60 minutes, 5mmol of NaOH was added to the reaction mixture, and the reaction was checked by TLC. After the reaction is completed, the solvent is removed by rotary evaporation to obtain a solid mixture, and the solid mixture is separated by silica gel column chromatography (eluent is a mixture of ethyl acetate and petroleum ether with the volume ratio of 1:100) to obtain the target compound, wherein the target compound has the following physical and chemical properties:
colorless needle-like crystals; the yield is 86%; 1 H NMR(400MHz,DMSO-d 6 )δ(ppm):8.23(2H,d,J＝8.8Hz),7.95(1H,dd,J＝3.6,1.2Hz),7.85(1H,d,J＝1.2Hz),7.75(1H,dd,J＝5.2,1.2Hz),7.57(2H,d,J＝8.4Hz),7.24(1H,dd,J＝4.8,3.6Hz),7.01(1H,d,J＝0.8Hz),3.99(3H,s)； 13 C NMR(100MHz,DMSO-d 6 )δ(ppm):164.61,153.73,145.21,140.71,137.33,134.52,129.20,129.15,128.88,128.72,127.51,110.23,105.27,53.68；HRMS(ESI)m/z:Calcd for C 16 H 12 ClNOS[M+H] + :302.0401,Found:302.0399.
the nuclear magnetic hydrogen spectrum of the compound is shown in figure 13, and the overlapped or dense part in figure 13 is shown in detail in figure 14. The nuclear magnetic resonance spectrum of the compound is shown in fig. 15, and a partial enlarged view of an overlapped or dense part in the nuclear magnetic resonance spectrum is also shown in fig. 15. The high resolution mass spectrum of the compound is shown in figure 16.
Example 5
Compounds of formula (I)Is prepared from
10mmol of 4-chloroacetophenone was dissolved in 10mL of absolute ethanol, and 10mL of 10% NaOH ethanol solution was added thereto. Stirring in ice bath, dropping 10mmol of 5-bromothiophene-2-formaldehyde and 10mL of absolute ethyl alcohol into the above mixed solution slowly by using a constant pressure dropping funnel, reacting at 0-5 ℃, and checking whether the reaction is completed by using a thin layer silica gel plate (TLC). After the completion of the reaction, 10 times of distilled water was added to the mixture, the pH of the solution was adjusted to neutrality with a 10% hydrochloric acid solution, precipitation was observed, and the solution was filtered and washed with distilled water. The crude product obtained is recrystallized from absolute ethanol to give chalcone intermediates.
1mmol of the intermediate prepared in the home-made state and 1mmol of malononitrile were dissolved in 20mL of methanol, to which 1mmol of potassium tert-butoxide was added. After reacting at 30-40 ℃ for 40-60 minutes, 5mmol of NaOH was added to the reaction mixture, and the reaction was checked by TLC. After the reaction is completed, the solvent is removed by rotary evaporation to obtain a solid mixture, and the solid mixture is separated by silica gel column chromatography (eluent is a mixture of ethyl acetate and petroleum ether with the volume ratio of 1:100) to obtain the target compound, wherein the target compound has the following physical and chemical properties:
white needle-like crystals; yield 84%; 1 H NMR(400MHz,DMSO-d 6 )δ(ppm):8.22(2H,d,J＝8.8Hz),7.81-7.80(2H,m),7.56(2H,d,J＝8.8Hz),7.37(1H,d,J＝4.0Hz),6.96(1H,d,J＝1.2Hz),3.98(3H,s)； 13 C NMR(100MHz,DMSO-d 6 )δ(ppm):164.58,153.85,144.15,142.36,137.18,134.61,132.45,129.13,128.90,128.27,114.07,109.83,105.15,53.72；HRMS(ESI)m/z:Calcd for C 16 H 11 BrClNOS[M+H] + :379.9506,Found:379.9507.
the nuclear magnetic hydrogen spectrum of the compound is shown in figure 17, and the overlapped or dense part in figure 17 is shown in figure 18. The nuclear magnetic resonance spectrum of the compound is shown in fig. 19, and a partial enlarged view of an overlapped or dense portion in the nuclear magnetic resonance spectrum is also shown in fig. 19. The high resolution mass spectrum of the compound is shown in figure 20.
Example 6
Compounds of formula (I)Is prepared from
10mmol of 4-chloroacetophenone was dissolved in 10mL of absolute ethanol, and 10mL of 10% NaOH ethanol solution was added thereto. Stirring in ice bath, dropping 10mmol of 5-methylthiophene-2-formaldehyde and 10mL of absolute ethyl alcohol into the above mixed solution slowly by using a constant pressure dropping funnel, reacting at 0-5 deg.C, and checking whether the reaction is completed by using a thin layer silica gel plate (TLC). After the completion of the reaction, 10 times of distilled water was added to the mixture, the pH of the solution was adjusted to neutrality with a 10% hydrochloric acid solution, precipitation was observed, and the solution was filtered and washed with distilled water. The crude product obtained is recrystallized from absolute ethanol to give chalcone intermediates.
1mmol of the intermediate prepared in the home-made state and 1mmol of malononitrile were dissolved in 20mL of methanol, to which 1mmol of potassium tert-butoxide was added. After reacting at 30-40 ℃ for 40-60 minutes, 5mmol of NaOH was added to the reaction mixture, and the reaction was checked by TLC. After the reaction is completed, the solvent is removed by rotary evaporation to obtain a solid mixture, and the solid mixture is separated by silica gel column chromatography (eluent is a mixture of ethyl acetate and petroleum ether with the volume ratio of 1:100) to obtain the target compound, wherein the target compound has the following physical and chemical properties:
white powder; the yield is 82%; 1 H NMR(400MHz,DMSO-d 6 )δ(ppm):8.21(2H,d,J＝8.4Hz),7.78(1H,d,J＝1.2Hz),7.75(1H,d,J＝1.2Hz),7.56(2H,d,J＝8.8Hz),6.93(1H,dd,J＝3.6,0.8Hz),6.89(1H,d,J＝1.2Hz),3.97(3H,s),2.38(3H,s)； 13 C NMR(100MHz,DMSO-d 6 )δ(ppm):164.57,153.58,145.34,142.43,138.23,137.38,134.46,129.12,128.83,127.66,127.59,109.78,104.67,53.62,15.66；HRMS(ESI)m/z:Calcd for C 17 H 14 ClNOS[M+H] + :316.0557,Found:316.0551.
the nuclear magnetic hydrogen spectrum of the compound is shown in figure 21, and the overlapped or dense part in figure 21 is shown in figure 22. The nuclear magnetic resonance spectrum of the compound is shown in fig. 23, and a partial enlarged view of an overlapped or dense portion in the nuclear magnetic resonance spectrum is also shown in fig. 23. The high resolution mass spectrum of the compound is shown in figure 24.
Experimental example 1
Determination of insecticidal Activity of Compounds of the invention
(1) Test pest
Armyworm 3-age larvae, broad bean aphid 3-age myzus persicae and tetranychus cinnabarinus are sensitive lines which are bred indoors for perennial.
(2) Method for measuring armyworm
Dissolving a sample to be tested in dimethyl sulfoxide, diluting the solution to a certain concentration by using 0.1% Tween-80 aqueous solution, and taking the corresponding solution without adding the sample to be tested as negative control. Cutting corn leaves into small sections of 2X 4cm, immersing in a solution to be tested for 5s, taking off, draining, putting into a culture dish (6 cm) with filter paper laid at the bottom, inoculating 15 larvae of 3 ages, placing in a laboratory with the temperature of 22-24 ℃ and the relative humidity of 60%, keeping feeding for 14:10h, recording death condition after 24h, repeating each experiment for 3 times, and calculating the corrected death rate by the following formula:
(3) Determination method of tetranychus cinnabarinus
Dissolving a sample to be tested in dimethyl sulfoxide, diluting the solution to a certain concentration by using 0.1% Tween-80 aqueous solution, and taking the corresponding solution without adding the sample to be tested as negative control. Collecting bean leaves with large insect population density, carefully selecting to enable healthy adult mites (30-50 heads) to be left on leaf surfaces, immersing the bean leaves with insects into a solution to be tested for 5 seconds, taking off, draining, placing the bean leaves into a culture dish (6 cm) with filter paper laid at the bottom, placing the bean leaves at the temperature of 22-24 ℃, keeping feeding in a laboratory with the relative humidity of 60% and the illumination time of 14:10h, recording death conditions after 24h, repeating each experiment for 3 times, and calculating the corrected death rate by using the following formula:
(4) Method for measuring broad bean aphids
Dissolving a sample to be tested in dimethyl sulfoxide, diluting the solution to a certain concentration by using 0.1% Tween-80 aqueous solution, and taking the corresponding solution without adding the sample to be tested as negative control. Collecting broad bean leaves with large insect population density, carefully selecting 3-year-old myzus persicae (30-40 heads) which are kept on leaf surfaces, immersing the broad bean leaves with insects in a solution to be tested for 5 seconds, taking off, draining, placing the broad bean leaves into a culture dish (6 cm) with filter paper laid at the bottom, placing the culture dish in a laboratory with the temperature of 22-24 ℃, the relative humidity of 60% and the illumination time of 14:10h for continuous feeding, recording death conditions after 24h, repeating each experiment for 3 times, and calculating the corrected death rate by using the following formula:
(5) Experimental results
The insecticidal results of the compounds of the present invention are shown in table 1.
TABLE 1 poisoning Activity of the Compounds of the invention against test pests
a : average of three replicates.
From Table 1 above, it is clear that the compounds of the present invention have a good poisoning activity against these pests.
Experimental example 2
Determination of germination promoting Effect of the Compound of the present invention on vegetable seeds
(1) Test seed
Cucumber seed (zhongnong No. 8), green pepper seed (fengyuan No. 8), tomato seed (dongfeng No. 4), celery seed (jin nan shi feng No. 1).
(2) Measurement method
Test compounds were dissolved in dimethyl sulfoxide, respectively, and diluted to 20mg/L with tap water containing 0.1% Tween-80 for use. Respectively weighing 10 g of cucumber seeds, 10 g of green pepper seeds, 5 g of tomato seeds and 5 g of celery seeds. Respectively immersing the materials into 20mL of the test solution, stirring for 30 minutes, then fishing the materials into a small sieve, flushing the materials with tap water for 3 to 4 times, and air-drying the materials for later use. The corresponding solution without test compound was used as a blank. 100 seeds which are treated by the liquid medicine and have uniform size and no defects are respectively selected and placed in a culture dish (9 cm) paved with double-layer filter paper. The 1 st water addition amount is as follows: 9mL of cucumber, 7mL of green pepper, 5mL of tomato and 5mL of celery, and then placing the cucumber in an incubator (25+/-2 ℃) for germination, observing for 1 time every day, and quantitatively supplementing when water is absent. Each treatment was repeated 3 times. After 1 day the germination of cucumber was checked, after 5 days the germination of green pepper was checked, after 3 days the germination of tomato was checked, after 9 days the germination of celery was checked and the average germination rate of 3 replicates was calculated.
(3) Experimental results
The effect of the compounds of the present invention on promoting germination of vegetable seeds is shown in Table 2.
TABLE 2 Effect of the compounds of the invention on seed germination at 20mg/L
a : average of three replicates.
As can be seen from Table 2, the compounds of the present invention have a good promoting effect on germination of the above 4 kinds of vegetable seeds.
Claims (6)
- The 2- (4-chlorophenyl) pyridine compound is characterized in that the structural formula of the 2- (4-chlorophenyl) pyridine compound is shown as the formula (I):wherein X is an oxygen atom or a sulfur atom; r is a hydrogen atom, a halogen atom, a C1-C4 alkyl group or a C1-C4 alkoxy group.
- 2. 2- (4-chlorophenyl) pyridine compound according to claim 1, wherein R is a hydrogen atom, a chlorine atom, a bromine atom, a methyl group, a methoxy group, or an ethyl group.
- 3. 2- (4-chlorophenyl) pyridine compound according to claim 1 or 2, wherein X is an oxygen atom or a sulfur atom.
- 4. The 2- (4-chlorophenyl) pyridine compound according to claim 1 or 2, wherein the 2- (4-chlorophenyl) pyridine compound has the formula:
- 5. use of a compound according to any one of claims 1 to 4 for the preparation of an agricultural insecticide; the pests controlled by the agricultural pesticide are armyworms, tetranychus cinnabarinus or broad bean aphids.
- 6. The use of a compound according to any one of claims 1 to 4 for the preparation of a germination promoter for seeds, said seeds being vegetable seeds; the vegetable seeds are cucumber seeds, green pepper seeds, tomato seeds or celery seeds.
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