Mosquito repellent and preparation method

A technology for mosquito repellent and limonin, applied in the field of mosquito repellent and preparation, can solve problems such as affecting the normal work and life of residents, increasing the risk of spreading malaria infectious diseases, etc. cost effect

Inactive Publication Date: 2017-08-18
HUANGSHAN LISHEN COMMODITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

A large number of mosquito activities not only increase the risk of spreading related infectious diseases such as malaria, dengue fever, and Japanese encephalitis; they also seriously affect the normal work and life of residents because of itching and dermatitis caused by their bites and blood-sucking

Method used

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  • Mosquito repellent and preparation method
  • Mosquito repellent and preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] The preparation of embodiment 1 limonin

[0021] Slowly add chromium trioxide (11 g, 110 mmol) to acetic anhydride (100 mL) at 0°C, stir the reaction until orange, add raw material Obacunone (45 g, 99.1 mmol), and heat up to 60 Continue to stir at ℃ for 3 hours, TLC (PE:EA=2:1) ​​to monitor the reaction end point, after the reaction is complete, the reaction solution is concentrated, the concentrated solution is separated by ethyl acetate (200 mL) and water (200 mL), and the organic phase is washed with sulfuric acid Magnesium was dried and concentrated, and intermediate 2 (46.0 g, 98.2 mmol) was dissolved in tetrahydrofuran (200 mL) and methanol (20 mL), and sodium borohydride (6.0 g, 150 mmol) was slowly added at 0°C to maintain the internal temperature of the reaction Not higher than 20°C, after the addition is complete, the reaction is stirred at 0°C for 1 hour, TLC (PE:EA=1:1) shows that the reaction is complete, the reaction solution is concentrated, and the conce...

Embodiment 2

[0026]Put 6.2g of limonin, 1.52g of permethrin, 1.368g of permethrin, 0.22g of dibutyl maleate, 2.12g of cinnamic aldehyde, 1.84g of pinene, and 2.6g of metasulfite into the reaction vessel Add about 76 g of water, heat to 48°C and stir until it is completely dissolved, then cool down to room temperature, then add 108 g of ethanol, and continue stirring for 1 hour to obtain the product.

Embodiment 3

[0028] Put 6.2g of limonin, 1.54g of dipermethrin, 1.2g of permethrin, 0.18g of dibutyl maleate, and 2.6g of metasulfite into a reaction vessel, add about 78.5g of water, and heat to Stir at 49°C until completely dissolved, lower to room temperature, then add 106 g of ethanol, and continue stirring for 1 hour to obtain the product.

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Abstract

The invention provides a mosquito repellent and a preparation method. The mosquito repellent is prepared from the following raw materials: limonin, dichlorochrysanoyl chloride, silafluofen, dibutyl maleate, cinnamaldehyde, pinene, metasulfite, ethanol and the balance of water. According to the mosquito repellent and the preparation method, mosquitoes can be repelled and killed; in addition, the mosquito-repellent component limonin is prepared in an artificial synthesis manner, so that the production cost is reduced, and batch production of a product is improved.

Description

technical field [0001] The invention relates to a mosquito repellant and a preparation method. Background technique [0002] Mosquitoes belong to the insect class Diptera, and there are about 3,000 species in the world. It is a tiny flying insect with piercing-sucking mouthparts. Usually the females feed on blood, while the males drink the sap of plants. Blood-sucking female mosquitoes are intermediate hosts for dengue, malaria, yellow fever, filariasis, Japanese encephalitis, and other pathogens. A large number of mosquito activities not only increase the risk of spreading related infectious diseases such as malaria, dengue fever, and Japanese encephalitis; they also seriously affect the normal work and life of residents because of itching and dermatitis caused by their bites and blood-sucking . [0003] In recent years, the compound application of mosquito killers has received extensive attention. Reasonable compounding can improve the control effect of a single drug, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01N55/10A01N53/00A01N43/90A01N37/06A01N35/02A01N27/00A01P7/04A01P17/00
CPCA01N55/00A01N27/00A01N35/02A01N37/06A01N43/90A01N53/00A01N2300/00
Inventor 程家利
Owner HUANGSHAN LISHEN COMMODITY
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