Micro-wave synthetic method for preparing methyl salicylate

A technology for methyl salicylate and microwave synthesis, which is applied in the preparation of carboxylate esters, chemical instruments and methods, and the preparation of organic compounds, can solve the problems of cumbersome post-processing, complicated equipment, and long reaction time, and achieve the goal of reaction time The effect of shortening, simple equipment and low energy consumption
CN101225045AInactive Publication Date: 2008-07-23ZHEJIANG UNIVERSITY OF SCIENCE AND TECHNOLOGY
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
ZHEJIANG UNIVERSITY OF SCIENCE AND TECHNOLOGY
Publication Date
2008-07-23
Estimated Expiration
Not applicable · inactive patent
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Abstract

The invention discloses a microwave synthetic preparation method for methyl salicylate, which is characterized in that: salicylic acid and methanol are used as raw material and concentrated sulfuric acid is used as catalyst; heating is made for reflux reaction under microwave radiation condition before separating to get salicylic acid methyl ester. The microwave synthetic preparation method for methyl salicylate has the advantages of greatly improving reaction ratio and shortening reaction time and significantly increasing reaction yield compared with normal preparation method for methyl salicylate.
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Description

technical field

[0001] The invention relates to organic synthesis technology, in particular to a microwave synthesis method for preparing methyl salicylate. Background technique

[0002] The scientific name of methyl salicylate is methyl o-hydroxybenzoate, which is a colorless or red oily liquid. Because it is the main component of the distilled oil of wintergreen leaves, it has the spirit of wintergreen, so it is commonly known as wintergreen oil. Methyl salicylate is a chemical product with a wide range of uses, mainly used in edible and cosmetic flavors, such as tuberose, acacia, etc., strawberry, grape, etc. food flavors, and can also be used in insecticides and fungicides , analgesics, solvents and intermediates for glazing agents and coatings, etc. The output of natural wintergreen oil extract is very limited, and industrial preparation of methyl salicylate is mainly used. The main method of industrially synthesizing methyl salicylate at present is: take concentrate...

Claims

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