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(Α-氰基-1-甲基)丁烯基-2,2-二甲基-3-(2,2-二氯乙烯基)环丙烷羧酸酯

Miewenjuzhi

CAS:

Molecular Formula: C15H19Cl2NO2

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(Α-氰基-1-甲基)丁烯基-2,2-二甲基-3-(2,2-二氯乙烯基)环丙烷羧酸酯 - Names and Identifiers

Name Miewenjuzhi
Synonyms JS 88
PY 115
pentmethrin
Miewenjuzhi
(α-cyano-1-methyl) butenyl-2,2-dimethyl-3-(2,2-dichlorovinyl) cyclo propanecarboxylate

(Α-氰基-1-甲基)丁烯基-2,2-二甲基-3-(2,2-二氯乙烯基)环丙烷羧酸酯 - Physico-chemical Properties

Molecular FormulaC15H19Cl2NO2
Physical and Chemical PropertiesChemical properties of industrial crude oil is brown liquid with content> 85%, B. p.150 ~ 152 ℃/4.0 × 102Pa, relative density 1.138(20 ℃), vapor pressure 1.37 × 10-2Pa(20 ℃), refractive index n4D1.5065. Soluble in benzene, toluene, ethanol and other organic solvents, insoluble in water.
UseMainly used for the control of mosquitoes and houseflies, the production of mosquito-repellent incense raw materials. For mosquito coils, spray, spray, etc

(Α-氰基-1-甲基)丁烯基-2,2-二甲基-3-(2,2-二氯乙烯基)环丙烷羧酸酯 - Production method

In the presence of a phase transfer catalyst, dichloropyranoyl chloride reacts with 2-methyl-pentenal and sodium cyanide, refluxes for 5h, washes with water, and the aqueous phase is treated with sodium thiosulfate, and the solvent is distilled., To prepare permethrin.
The intermediate 2-methyl-pentyl -2-enal can be prepared by dehydration of propional, that is, propional and catalyst reflux reaction for 6 hours, collect 39~41 ℃(4.0 × 103Pa) fraction, and make clam 2-methyl-pentyl -2-enal. The synthesis of dichlorochrysanthemum chloride can be based on ethyl 3, 3-dimethyl-4-pentenoic acid, or it can be synthesized by the cyclobutanone method (cis/inverse ratio is about 80/20).

Last Update:2024-04-10 22:29:15
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