CN108440519A - Oxadiazole neighbour's benzene ethoxy base class compound and purposes - Google Patents

Oxadiazole neighbour's benzene ethoxy base class compound and purposes Download PDF

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Publication number
CN108440519A
CN108440519A CN201810285435.3A CN201810285435A CN108440519A CN 108440519 A CN108440519 A CN 108440519A CN 201810285435 A CN201810285435 A CN 201810285435A CN 108440519 A CN108440519 A CN 108440519A
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Prior art keywords
compound
neighbour
oxadiazole
base class
ethoxy base
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CN201810285435.3A
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CN108440519B (en
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许良忠
张明明
孙鉴昕
王明慧
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HeNan K-Land Agriculture Development Co.,Ltd.
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Qingdao University of Science and Technology
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    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07DHETEROCYCLIC COMPOUNDS
    • C07D417/00Heterocyclic compounds containing two or more hetero rings, at least one ring having nitrogen and sulfur atoms as the only ring hetero atoms, not provided for by group C07D415/00
    • C07D417/02Heterocyclic compounds containing two or more hetero rings, at least one ring having nitrogen and sulfur atoms as the only ring hetero atoms, not provided for by group C07D415/00 containing two hetero rings
    • C07D417/06Heterocyclic compounds containing two or more hetero rings, at least one ring having nitrogen and sulfur atoms as the only ring hetero atoms, not provided for by group C07D415/00 containing two hetero rings linked by a carbon chain containing only aliphatic 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
    • A01N47/00Biocides, pest repellants or attractants, or plant growth regulators containing organic compounds containing a carbon atom not being member of a ring and having no bond to a carbon or hydrogen atom, e.g. derivatives of carbonic acid
    • A01N47/40Biocides, pest repellants or attractants, or plant growth regulators containing organic compounds containing a carbon atom not being member of a ring and having no bond to a carbon or hydrogen atom, e.g. derivatives of carbonic acid the carbon atom having a double or triple bond to nitrogen, e.g. cyanates, cyanamides

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Dentistry (AREA)
  • Pest Control & Pesticides (AREA)
  • Plant Pathology (AREA)
  • Health & Medical Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Agronomy & Crop Science (AREA)
  • General Health & Medical Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Zoology (AREA)
  • Environmental Sciences (AREA)
  • Plural Heterocyclic Compounds (AREA)
  • Nitrogen And Oxygen Or Sulfur-Condensed Heterocyclic Ring Systems (AREA)
  • Agricultural Chemicals And Associated Chemicals (AREA)

Abstract

The invention discloses oxadiazole neighbour's benzene ethoxy base class compounds, and structure is as shown in formula I:

Description

Oxadiazole neighbour's benzene ethoxy base class compound and purposes
The invention belongs to field of pesticides in pesticide for technical field, and in particular to oxadiazole neighbour's benzene ethoxy base class Close object and purposes.
Background technology harmful nematode can lead to crop production reduction or influence plant growth, and the harmful nematode that China is found is There is more than 40 kinds, mainly has Rhabdictid, pratylenchus, cyst roundworm, root-knot nematode etc., countries in the world strengthened and killed recent years The research and development of nematode agent, principal item have fosthiazate (fosthiazate) (Formula II), fluorine thiophene worm sulfone (fluensulfone) (formula III), imicyafos (formula IV), they all have good eelworm-killing activity.But due to fosthiazate and fluensulfone All there is thiazole ring structure, will produce the compounds such as organophosphor and organic sulfur in production process, seriously pollute environment;Due to closing Dipropyl sulphur can be used during at imicyafos, the compounds such as phosphorus trichloride also have environment certain harm.Existing In some technologies, the oxadiazole neighbour's benzene ethoxy base class compound (Formulas I) and its eelworm-killing activity such as Ben Faming are not disclosed.
The purpose of the present invention is to provide a kind of structure novel, efficient, safety, cost accounting Di Evil bis- for invention content The agricultural nematicide of azoles neighbour's benzene ethoxy base class compound.
Technical scheme is as follows:
Oxadiazole neighbour's benzene ethoxy base class compound, structure are shown in formula I:
Compound of formula I can be prepared by following reaction step:
(1) compound VI is made in reflux in toluene in compound V:
(2) using potassium carbonate or sodium carbonate as acid binding agent, compound VI is with 2- cyanoiminos -1,3-thiazoles alkane in acetic acid second It is reacted at room temperature in ester and compound I is made:
Advantages of the present invention and good effect:
Mu Qian oxadiazole insecticides commercial varieties are considerably less, the compounds of this invention in the structure simultaneously Han You oxadiazoles It is novel one kind, wide spectrum, absorbability nematicide, the eelworm-killing activity with superelevation with thiazole cyanogen imine structure.To southern root The insecticidal activity test result of tie lines worm shows:Compound of formula I, up to 95%, and only has 85% in 1ppm with fosthiazate under concentration; In 0.1ppm, the compounds of this invention still has 75% suppression to kill rate, and fosthiazate only has 20% suppression to kill rate under the concentration.This Invention compound is nitrogen cyclics, is had the characteristics that beneficial organism hypotoxicity, degradable, environmental-friendly.This compound Production process is simple, and reaction condition is mild, does not generate by-product, and production cost is low.Meanwhile it is short to make up oxadiazole insecticides Scarce problem has very positive meaning to the improvement of China's resistant insect.Therefore, the compounds of this invention is as pesticides discovery New varieties have ultra high efficiency, low resistance, simple production process, low cost and advantages of environment protection, have and are killed as initiative property The great potential of nematode agent new varieties industrialization.
Nematicidal composition the invention also includes compound of formula I as active component further includes agricultural in the composition With acceptable carrier in forestry.
The compounds of this invention can be used alone, can also be used with other active compounds when preventing nematode evil, with Improve the comprehensive performance of product.
The composition of the compounds of this invention can be made preparation use, the compounds of this invention be scattered in as active component or It is dissolved in carrier or solvent, adds suitable surfactant that suspending agent, microemulsion, missible oil and aqueous emulsion etc. is made.
It should be clear that in scope defined by the claims of the present invention, various transformation and change can be carried out.
Specific implementation mode:
Example is synthesized below and raw result of surveying can be used to further illustrate the present invention, but is not intended to limit the present invention.
Synthesize example
The preparation of example 1, compound of formula I
(1) synthesis of compound VII:
Be separately added into 250mL there-necked flasks the adjacent cyanophenols of 5.95g (0.05mol), 20mL 10%NaOH aqueous solutions and 80mL toluene is heated to 70 DEG C, at this temperature insulation reaction 1h.After 1h, 60 DEG C are cooled to, 9.24g sulfuric acid two is slowly added dropwise Ethyl ester, drop, which finishes, is warming up to 70 DEG C the reaction was continued 2h, and the adjacent cyanophenol of TLC detections disappears, and cool down liquid separation, and toluene layer is taken to rotate light Yellow oily liquid 2- ethoxybenzene formonitrile HCN 6.98g, yield 95%.
(2) synthesis of compound VIII:
150mL ethyl alcohol, 4.14g (0.06mol) hydroxylamine hydrochlorides and 6g (0.06mol) three are added into 250mL three-necked flasks Ethamine is heated to 50-60 DEG C of reaction 1h.7.2g compound VII are added after 1h into flask, temperature rising reflux reacts 4h, TLC detections Compound VII disappears, and revolving removes ethyl alcohol, and 150mL water is added into flask, dissolves triethylamine hydrochloride, and residue filters, filter Cake is compound VIII, and white solid 9.61g, yield 89% are obtained after drying.
(3) synthesis of compound IX
150mL ethyl acetate, tri- second of 9.00g (0.05mol) compound VIII and 6g are added into 250mL three-necked flasks 6.78g (0.06mol) chloracetyl chloride is slowly added dropwise under ice-water bath stirring condition for amine, after reacting 4h, TLC detection compounds VIII It disappears.Liquid separation is washed, takes ethyl acetate layer, revolving removes after ethyl acetate to obtain dark red oil thick liquid, with methanol or different Faint yellow solid 9.75g, yield 76% are obtained after propyl alcohol recrystallization.
(4) synthesis of compound X
12.7g (0.05mol) compound IX, 150mL toluene is added into 150mL three-necked flasks, temperature rising reflux dehydration is anti- Answer 6h, TLC detection compounds IX disappears, and revolving obtains dark red oil thick liquid to get compound X except toluene, with methanol or Recrystallisation from isopropanol obtains faint yellow solid 10.37g, yield 87%.
(5) synthesis of compound I
11.8g (0.05mL) compounds X, 150mLDMF, 8.28g (0.05mL) K is added into 150mL three-necked flasks2CO3 And 6.35g thiazolidines, 4h is reacted at 80 DEG C, TLC detection compounds X disappears.It filters, takes filtrate, 300mL is added after cooling Water has a large amount of solids to be precipitated, and is filtered after stirring a period of time, filter cake is product Compound I.White solid is obtained after drying 14.15g yield 86%.
The characterization of compound of formula I:
1H-NMR (500MHz, DMSO):δ/ppm 1.312-1.3929(t,3H),3.563-3.637(t,2H),4.094- 4.191(m,4H),5.08(s,2H),7.065-7.135(t,1H),7.188-7.245(d,1H),7.508-7.583(m,1H), 7.793-7.852(q,1H).Fusing point:175.6-179.4℃
Biological activity determination embodiment
Example 2, insecticidal activity assay
The live body active testing that Meloidogyne incognita has been carried out to the compounds of this invention, is measured using the method for tagging, will 30 nematodes are respectively put into the compound of formula I of prepared various concentration and fosthiazate liquid, after 48h is handled, The death of nematode and the case where going down, calculate virulence, experiment is repeated 3 times, is averaged under microscope.Result is summarized in table 1。
Table 1 is to Meloidogyne incognita activity killing rate
By test result it is found that compound I has excellent eelworm-killing activity, in 10ppm, the activity of compound I is same In fosthiazate, up to 100%;In 1ppm or less, the activity of compound I is significantly higher than fosthiazate.

Claims (3)

1. oxadiazole neighbour's benzene ethoxy base class compound, structure is as shown in formula I:
2. the purposes of oxadiazole neighbour benzene ethoxy base class compound according to claim 1, it is characterised in that I chemical combination of formula Object is used as agricultural chemical insecticide, single use or is applied in combination with other bioactive compound, is used as prevention agricultural or forestry Nematode does harm to.
3. a kind of nematicidal composition, being containing type I compound described in claim 1 can in active component and agricultural or forestry The carrier of receiving.
CN201810285435.3A 2018-04-03 2018-04-03 Oxadiazole o-phenylethoxy compound and application thereof Active CN108440519B (en)

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Cited By (4)

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Publication number Priority date Publication date Assignee Title
CN109320471A (en) * 2018-11-08 2019-02-12 青岛科技大学 3- (2,6- difluorophenyl) -1,2,4- furodiazole compound and its application
CN109336882A (en) * 2018-11-07 2019-02-15 青岛科技大学 A kind of fluorine-containing pyridine acyl piperazine compounds and its application
CN111635397A (en) * 2020-06-23 2020-09-08 南通大学 Preparation and application of 3- (4-trifluoromethylphenyl) -1,2, 4-oxadiazole derivative containing five-membered nitrogen heterocycle
CN111675704A (en) * 2020-06-23 2020-09-18 南通大学 2-substituent imidazole alkane compound containing oxadiazole heterocyclic structure and preparation method and application thereof

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CN107674070A (en) * 2017-09-19 2018-02-09 华南农业大学 A kind of cyano group imines thiazolidine furoyl amine compound and its preparation method and application

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CN103539716A (en) * 2013-10-31 2014-01-29 青岛农业大学 One group of 2-para chlorphenyl-4-substituted methyl-5- trifluoromethyl-3-cyanpyrrole compounds
CN107674070A (en) * 2017-09-19 2018-02-09 华南农业大学 A kind of cyano group imines thiazolidine furoyl amine compound and its preparation method and application

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Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109336882A (en) * 2018-11-07 2019-02-15 青岛科技大学 A kind of fluorine-containing pyridine acyl piperazine compounds and its application
CN109336882B (en) * 2018-11-07 2021-08-17 青岛科技大学 Fluorine-containing pyridine acyl piperazine compound and application thereof
CN109320471A (en) * 2018-11-08 2019-02-12 青岛科技大学 3- (2,6- difluorophenyl) -1,2,4- furodiazole compound and its application
CN109320471B (en) * 2018-11-08 2021-09-21 青岛科技大学 3- (2, 6-difluorophenyl) -1,2, 4-oxadiazole compound and application thereof
CN111635397A (en) * 2020-06-23 2020-09-08 南通大学 Preparation and application of 3- (4-trifluoromethylphenyl) -1,2, 4-oxadiazole derivative containing five-membered nitrogen heterocycle
CN111675704A (en) * 2020-06-23 2020-09-18 南通大学 2-substituent imidazole alkane compound containing oxadiazole heterocyclic structure and preparation method and application thereof
CN111635397B (en) * 2020-06-23 2022-10-25 南通大学 Preparation and application of 3- (4-trifluoromethylphenyl) -1,2,4-oxadiazole derivative containing five-membered nitrogen heterocycle
CN111675704B (en) * 2020-06-23 2022-11-01 南通大学 2-substituent imidazole alkane compound containing oxadiazole heterocyclic structure and preparation method and application thereof

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Effective date of registration: 20211019

Address after: 475500 south of Miyi Road, Daying Town, Weishi County, Kaifeng City, Henan Province

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Address before: 266000 Songling Road, Laoshan District, Qingdao, Shandong Province, No. 99

Patentee before: QINGDAO University OF SCIENCE AND TECHNOLOGY

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Address after: 475500 south of Miyi Road, Daying Town, Weishi County, Kaifeng City, Henan Province

Patentee after: HeNan K-Land Agriculture Development Co.,Ltd.

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Address before: 475500 south of Miyi Road, Daying Town, Weishi County, Kaifeng City, Henan Province

Patentee before: Kaifeng Yitian Biotechnology Co.,Ltd.

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