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Sex-attractant halogenated analogue for preventing agrotis ypsilon

A technology of small cutworms and analogues, applied in the fields of attracting pests, chemicals for biological control, pest control, etc., achieving the effects of simple preparation, good stability, and low dosage

Inactive Publication Date: 2017-11-07
INST OF PLANT PROTECTION CHINESE ACAD OF AGRI SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, due to the weather and other reasons, the use of black light or high-altitude lamps and sweet and sour liquid has certain limitations.

Method used

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  • Sex-attractant halogenated analogue for preventing agrotis ypsilon
  • Sex-attractant halogenated analogue for preventing agrotis ypsilon
  • Sex-attractant halogenated analogue for preventing agrotis ypsilon

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Embodiment 1 The preparation of cis-7-dodecenyl-2-monofluoroacetate

[0027] The compound in the present invention can be synthesized by the route described below, the synthetic route of cis-7-dodecenyl-2-monofluoroacetate see Figure 4 .

[0028] Dissolve 0.5g (0.002mol) of cis-7-dodecenol in 20mL of anhydrous dichloromethane, add 0.04g of 4-dimethylaminopyridine, then add 0.31g of TEA, ice-bath, and react The temperature is maintained at about 0°C, and the dichloromethane solution of fluoroacetic anhydride is gradually added dropwise. After the dropwise addition, the ice bath lasts for a period of time, and the plate is spotted to determine whether the reaction is complete. After the reaction was complete, impurities and excess acid anhydride were removed by extraction with saturated brine and anhydrous sodium sulfate. Finally, the solvent was removed by rotary evaporation under reduced pressure, and 0.61 g (1.87 mmol) of light yellow oil was obtained by column chrom...

Embodiment 2

[0029] Example 2 Preparation of cis-7-dodecenyl-2,2-difluoroacetate

[0030] The preparation method of cis-7-dodecenyl-2,2-difluoroacetate is similar to Example 1, only need to change the chloroacetic anhydride in Example 1 into difluoroacetic anhydride, and according to Example Synthesize according to the steps in 1 to obtain 0.57 g (1.82 mmol) of light yellow oil with a yield of 78.9%.

Embodiment 3

[0031] Embodiment 3 field bioactivity assay test

[0032] Lure preparation:

[0033] (1) The lure carrier adopts a cylindrical green concave rubber plug with a height of 14mm, an inner diameter of the opening end of 8mm, a wall thickness of the opening end of 1mm, and an opening depth of 5mm.

[0034] (2) The sex pheromone components of the cutworm were cis-7-dodecyl acetate (Z7-12:Ac), cis-9-tetradecyl acetate (Z9-14:Ac), cis- 11-Hexadecyl acetate (Z11-16:Ac) was mixed at a mass ratio of 3:1.3:0.8, and diluted with n-hexane to a solution with a concentration of 1 μg / μL.

[0035] (3) Pipette 100 μL (1 μg / μL) of the above-mentioned cutworm sex pheromone solution and add it to the bottom of the rubber head, and the little cutworm sex pheromone solution will penetrate into the rubber with the solvent (n-hexane). After the solvent (n-hexane) was volatilized, 100 μg of the sex pheromone of the cutworm was obtained.

[0036] (4) cis-7-dodecenyl-2-monofluoroacetate, cis-9-tetradec...

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Abstract

The invention discloses a sex-attractant halogenated analogue for preventing agrotis ypsilon. The sex-attractant halogenated analogue comprises an agrotis-ypsilon sex pheromone component and a halogenated pheromone analogue thereof, wherein the halogenated pheromone analogue is selected from one or more of cis-7-dodecenyl-2-monofluoroacetate, cis-9-tetradecenyl-2, 2-dichloroacetate, cis-7-dodecenyl-2, 2-difluoroacetate. The sex-attractant halogenated analogue disclosed by the invention has the advantages that male agrotis ypsilons can be trapped more effectively, the reproduction rate can be reduced, and the extinction of pest populations is gradually controlled, so that the purpose of preventing pests is achieved. The sex-attractant halogenated analogue disclosed by the invention is not only less in use amount and environmental-friendly, but also can be accurately applied in insect condition prediction, mass trapping and mating disruption, and plays an important role in comprehensive treatment of the agrotis ypsilon.

Description

technical field [0001] The invention belongs to the technical field of biological control, and in particular relates to a halogenated analogue of a sex attractant for preventing and controlling cutworms. Background technique [0002] The small cutworm, Agrotisypsilon (Rottemberg), belongs to Lepidoptera, Noctuidae, also known as "earth silkworm", "ground silkworm" and so on. It mainly harms the seedlings of vegetables, corn, sorghum, cotton and other crops, cutting off the stems of the seedlings near the ground, causing the whole plant to die, resulting in lack of seedlings and broken ridges, and even destroying the seeds in severe cases. At present, the methods of controlling the cutworm mainly include spraying chemical agents and trapping and killing adults. Chemical agents have the advantages of fast and convenient prevention and treatment, but their drug resistance also has great disadvantages. Regarding the trapping and killing of adults, the phototaxis of the cutworm...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01N25/18A01N37/02A01P19/00A01P7/04C07C69/63C07C67/08A01M1/02A01M1/04A01M1/10
CPCA01M1/02A01M1/04A01M1/10A01N25/18A01N37/02C07B2200/09C07C67/08C07C69/63
Inventor 宁君王留洋王安佳翁爱珍张智张云慧梅向东折冬梅
Owner INST OF PLANT PROTECTION CHINESE ACAD OF AGRI SCI
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