2，2-dichloro-1-(4-ethyoxy phenyl)cy-clopropane carboxylic acid
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2，2-dichloro-1-(4-ethyoxy phenyl)cy-clopropane carboxylic acid
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CAS No:
63935-26-2
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Chemical Name:
2，2-dichloro-1-(4-ethyoxy phenyl)cy-clopropane carboxylic acid
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Synonyms:
2，2-dichloro-1-(4-ethyoxy phenyl)cy-clopropane carboxylic acid
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CAS No:
2，2-dichloro-1-(4-ethyoxy phenyl)cy-clopropane carboxylic acid Use and Manufacturing
The preparation method is based on ethyl p-ethoxyphenylacetate as a raw material, and an addition reaction occurs with diethyl oxalate in the presence of sodium ethoxide, and the resulting product is reacted in acetic acid to generate 4-ethoxy-2-carbonyl carboxylate. Ethyl ethyl phenylacetate, and then react with formaldehyde to produce ethyl 4-ethoxy-2-methylene phenylacetate, which is then combined with chloroform in an alkaline solution in the presence of a phase transfer catalyst TBAC to form Synthesize 2, 2-dichloro-1-(4-ethoxyphenyl) cyclopropane carboxylic acid ethyl ester, and then saponify and acidify to obtain the corresponding cyclopropane carboxylic acid.
2,2-Dichloro-1-(4-ethoxyphenyl)cyclopropanecarboxylic acid is an intermediate of cycloprothrin.
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