Preparation method of methyl propanal ethyl phosphonate as glufosinate-ammonium intermediate

A technology of ethyl methylpropionyl phosphonate and ethyl methylpropionyl phosphonate, which is applied in the field of preparation of ethyl methylpropionyl phosphonate, an intermediate of glufosinate-ammonium, and can solve the problem of unzipping process The process is cumbersome, the yield is not very ideal, and it is not easy to recycle, etc., to achieve the effect of wide weeding spectrum, not easy to drift, safe and convenient to use
CN107286191AActive Publication Date: 2017-10-24内蒙古佳瑞米精细化工有限公司
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
内蒙古佳瑞米精细化工有限公司
Publication Date
2017-10-24

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Abstract

The invention relates to a preparation method of methyl propanal ethyl phosphonate as a glufosinate-ammonium intermediate and belongs to the field of organic chemistry. The preparation method comprises the following steps: (1) taking 3,3-diethoxy propyl methyl ethyl phosphonate as a raw material, catalyzing and hydrolyzing via a catalyst to prepare methyl propanal ethyl phosphonate, wherein the catalyst is sulfonic acid resin, strong acid ion exchange resin or perfluorinated sulfonic acid resin; and (2) filtering the product obtained in the step (1) for recycling sulfonic acid resin, and carrying out pressure-reduced desolvation of filtrate to obtain methyl propanal ethyl phosphonate. The specific preparation method is as shown in the description. According to the preparation method of methyl propanal ethyl phosphonate as the glufosinate-ammonium intermediate, through optimization of the catalyst, the reaction time is greatly reduced; the yield is improved; meanwhile, the catalyst is easy to recycle and is reusable; the production cost is reduced.
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Description

technical field

[0001] The invention relates to a preparation method of ethyl methyl propionyl phosphonate, an intermediate of glufosinate-ammonium, and belongs to the field of organic chemistry. Background technique

[0002] Glufosinate-ammonium (glufosinate-ammonium) is developed and produced by Hearst Company. It is a phosphonic acid herbicide, a glutamine synthesis inhibitor, and a non-selective (killing) contact herbicide. It was developed in the 1980s and registered as a herbicide in 1984. Glufosinate-ammonium is a large-tonnage pesticide variety in the world, and it is also the second largest genetically modified crop resistant to herbicides in the world. Low toxicity, relatively safe, easy to degrade in soil, safe for crops, not easy to drift, wide herbicidal spectrum, high activity, less dosage, less environmental pressure, rapid herbicide, can quickly kill more than 100 species of Gramineae and broadleaf For leaf weeds, water can be used as a base, and it is safe...

Claims

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