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Preparation method of alpha-ethyl furan carbinol

A technology of ethyl furan methanol and furfuryl alcohol, which is applied in the chemical industry, can solve problems such as unstable product quality and long process routes, and achieve the effects of stable product quality, low reaction temperature, and safe and reliable production

Inactive Publication Date: 2011-03-30
广东省肇庆香料厂有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The process route of this method is long, the reaction pressure and reaction temperature have special requirements, and the quality of the output product is relatively unstable

Method used

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  • Preparation method of alpha-ethyl furan carbinol
  • Preparation method of alpha-ethyl furan carbinol
  • Preparation method of alpha-ethyl furan carbinol

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Experimental program
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Embodiment

[0019] Weigh ethyl chloride, magnesium, and furfural at a molar ratio of 1:1:1, add them into a mixed solvent of benzene and tetrahydrofuran, add bromoethane, stir and keep warm at 75±5°C, and prepare furfuryl through catalytic reaction Alcohol Grignard reagent.

[0020] The ammonium chloride aqueous solution added with furfuryl alcohol Grignard reagent is subjected to hydrolysis reaction under low temperature to obtain α-ethylfuran methanol.

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Abstract

The invention discloses a preparation method of alpha-ethyl furan carbinol, comprising the following order steps in sequence: (1) preparing furfuryl alcohol Grignard reagent by the catalytic reaction of chloroethane, magnesium and furfural; and (2) preparing the alpha-ethyl furan carbinol via the hydrolysis reaction of the furfuryl alcohol Grignard reagent. The method of the invention has the advantages of short process route, short feeding time, low raw material cost, high production capacity, good and stable product quality, normal reaction pressure, low reaction temperature, reliable and safe production and the like and is especially suitable for large-scale industrial production.

Description

technical field [0001] The invention relates to the field of chemical industry, in particular to a preparation method of α-ethylfuranmethanol. technical background [0002] α-Ethylfuranmethanol is the raw material intermediate of the chemical synthesis method of ethyl maltol. It is usually prepared by Grignard reaction to prepare Grignard reagent, and then it is prepared by addition and hydrolysis of furfural. The Grignard reagent is prepared under the following conditions, and the Grignard reagent is added with furfural at low temperature (about 0°C), and then hydrolyzed to obtain α-ethylfuranmethanol. The reaction formula is as follows: [0003] [0004] The process route of this method is long, the reaction pressure and reaction temperature all have special requirements, and the quality of the produced product is relatively unstable. Contents of the invention [0005] In order to solve the above problems, the purpose of the present invention is to provide a new prep...

Claims

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Application Information

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IPC IPC(8): C07D307/42
Inventor 唐惠文
Owner 广东省肇庆香料厂有限公司
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