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Synthetic method of ethyl vanillin

A technology of ethyl vanillin and a synthesis method, which is applied in the field of ethyl vanillin synthesis, can solve the problems of complex production process of ethyl vanillin, difficult to conform to human beings, low purity, etc., and achieves convenient and simple preparation and use. Good effect, high purity effect

Inactive Publication Date: 2014-10-08
安徽佑骏商品混凝土有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the daily chemical industry, it is mainly used as a flavoring agent for cosmetics. The traditional production process of ethyl vanillin is relatively complicated, and the purity of production is relatively low, which is difficult to meet the needs of human beings.

Method used

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  • Synthetic method of ethyl vanillin
  • Synthetic method of ethyl vanillin
  • Synthetic method of ethyl vanillin

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] A kind of ethyl vanillin, comprises the raw material synthesis of following weight,

[0026]

[0027] A synthetic method of ethyl vanillin, comprising the following processing steps,

[0028] a. Take by weighing 10 milliliters of chloroform and dissolve in 3.12 grams of liquid bromine to obtain a chloroform solution.

[0029] b. React 19.4 grams of potassium permanganate with 29 milliliters of concentrated hydrochloric acid, then remove the internal hydrochloric acid to obtain chlorine gas.

[0030] c. Dry the chlorine gas in b, and then input it into the chloroform solution in a and stir for 30 minutes. After fully reacting, bromine chloride is obtained for use.

[0031] d. Add 90 milliliters of chloroform, 19 milliliters of ethyl acetate, and 3.9 grams of p-hydroxybenzaldehyde into the reaction kettle, control the temperature at 10° C., drop evenly bromine chloride, and stir for 60 minutes.

[0032] e. discharge the chloroform after the mixture in step d is subje...

Embodiment 2

[0041] A kind of ethyl vanillin, comprises the raw material synthesis of following weight,

[0042]

[0043] A synthetic method of ethyl vanillin, comprising the following processing steps,

[0044] a. Take 20 milliliters of chloroform and dissolve in 3.13 grams of liquid bromine to obtain a chloroform solution.

[0045] b. React 19.5 grams of potassium permanganate with 30 milliliters of concentrated hydrochloric acid, then remove the internal hydrochloric acid to obtain chlorine gas.

[0046] c. Dry the chlorine gas in b, and then input it into the chloroform solution in a and stir for 30 minutes. After fully reacting, bromine chloride is obtained for use.

[0047] d. Add 100 ml of chloroform, 20 ml of ethyl acetate, and 4 g of p-hydroxybenzaldehyde into the reaction kettle, control the temperature at 15° C., drop evenly bromine chloride, and stir for 60 min.

[0048] e. discharge the chloroform after the mixture in step d is subjected to vacuum distillation, then add w...

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Abstract

A synthetic method of ethyl vanillin relates to the technical field of the chemical industry. Ethyl vanillin is prepared through a high temperature chemical reaction of 3.9-4.1g of p-hydroxybenzaldehyde, 3.12-3.15g of liquid bromine, 5.43-5.45g of sodium ethoxide, 10-140ml of chloroform, 19-21ml of ethyl acetate, 0.63-0.65g of copper oxide, 19.4-19.6g of potassium permanganate and 29-31ml of concentrated hydrochloric acid. The method has the advantages of convenient and simple preparation, environmental protection, no pollution, less equipment investment, high purity and convenient operation, and the prepared ethyl vanillin has the advantages of good use effect, safety and reliability.

Description

technical field [0001] The invention relates to the technical field of chemical industry, in particular to a method for synthesizing ethyl vanillin. Background technique [0002] Ethyl vanillin is white to light yellow needle-like crystal or crystalline powder, similar to vanilla bean aroma, stronger aroma than vanillin, the product is a broad-spectrum fragrance, and is one of the most important synthetic fragrances in the world today , is an indispensable and important raw material in the food additive industry, its aroma is 3-4 times that of vanillin, it has a strong vanilla bean aroma, and the fragrance lasts for a long time. Widely used in food, chocolate, ice cream, beverages and daily cosmetics to enhance and fix fragrance. In addition, ethyl vanillin can also be used as a feed additive, a brightener in the electroplating industry, and an intermediate in the pharmaceutical industry. Liquid preparations are also used in semi-solid preparations and solid preparations, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C47/575C07C45/64
CPCC07C45/63C07C45/64C07C47/575C07C47/565
Inventor 刘超金士明赵秀进常好银
Owner 安徽佑骏商品混凝土有限公司
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