New technology of synthesizing fenoxycarb

A technology of fenoxycarb and a new process, which is applied in the field of synthesizing fenoxycarb, can solve the problems of catalytic activity and selectivity decline, limit the popularization and use of fenoxycarb, and high reaction temperature, and achieve long reaction time, shortened reaction time, The effect of mild reaction conditions
CN1597665AInactive Publication Date: 2005-03-23PILARQUIM SHANGHAI +1
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
PILARQUIM SHANGHAI
Publication Date
2005-03-23
Estimated Expiration
Not applicable · inactive patent

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Abstract

A process for synthesizing fenoxycarb by use of composite catalyst incldues such steps as reaction between phenol and p-chlorophenol under action of copmosite catalyst in alkaline condition to obtain 4-phenoxyphenol, and reating on 2-ethyl chloroethylformate. Said composite catalyst is also disclosed.
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Description

technical field The present invention relates to a kind of new technology of synthesizing fenoxycarb, specifically relate to a kind of new technology that adopts composite catalyst to synthesize fenoxycarb. Background technique Fenoxycarb, also known as fenoxycarb and fenoxycarb, has a chemical name of 2-(p-phenoxyphenoxy)ethyl carbamate, which was developed by Ciba-Geigy in Switzerland in 1982. It is the only juvenile hormone pesticide with broad-spectrum insecticidal effect successfully developed so far. The pesticide has the advantages of low toxicity, high efficiency, broad spectrum, not easy to produce resistance, and does not pollute the environment. Especially it has special effects on pests that have developed resistance to conventional pesticides such as pyrethroids and organophosphorus, such as diamondback moth, beet armyworm, cabbage caterpillar, cabbage aphid, apple yellow aphid, etc. It is an ideal medicine for pollution agricultural production. Fenoxycarb ...

Claims

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