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Method for synthesizing vanillyl ethyl ether

A technology of vanillyl ethyl ether and a synthesis method, which is applied in the dehydration of hydroxyl-containing compounds to prepare ethers, ether preparations, organic chemistry, etc., can solve the problems of low reaction yield and high cost, and achieve improved reaction yield and three wastes Less, the effect of reducing the reaction cost

Inactive Publication Date: 2008-04-23
上海香料研究所
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Problems solved by technology

The current synthetic method has low reaction yield and high cost

Method used

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  • Method for synthesizing vanillyl ethyl ether

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Embodiment Construction

[0007] The following further describes the implementation of the present invention:

[0008] In a 500 ml three-necked flask equipped with a stirrer, a thermometer and a reflux condenser, add 80.0 g (0.52 mol) vanillyl alcohol, 239.0 g (5.2 mol) ethanol, and 50 g cation exchange resin Amberhite IR-120(H) . Stir and reflux for 3-4 hours. After the reaction is completed, filter, and recover the cation exchange resin Amberhite IR-120 (H). Ethanol was recovered at room temperature and distilled under reduced pressure to obtain 66.3 grams of product, with a yield of 70.1%.

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Abstract

The present invention discloses synthesis process of vanillyl ethyl ether. Vanillyl ethyl ether is prepared with vanillyl alcohol and ethanol and through reaction at reflux temperature for 3-4 hr in the presence of catalyst of concentrated sulfuric acid, hydrochloric acid or cationic exchange resin Amberhite IR-120(H). Adopting cationic exchange resin Amberhite IR-120(H) as catalyst can result in high yield, low cost and less wastes.

Description

Technical field [0001] The invention relates to a method for synthesizing perfume vanillyl ethyl ether Background technique [0002] Vanillyl ethyl ether naturally exists in fragrant beans and is mainly used in baked foods, fast foods, chewing gum, frozen milk products and other foods. Vanillyl ethyl ether is recognized as GRAS by FEMA, and its number is 3815. In 2001, it was evaluated as safe to use by JECFA. The current synthesis method has low reaction yield and high cost. Summary of the invention [0003] The purpose of the present invention is to provide a method for synthesizing perfume vanillyl ethyl ether with high reaction yield and low cost. [0004] Synthesis of vanillyl ethyl ether: It is prepared by reacting vanillyl alcohol with ethanol at reflux temperature. The preparation of vanillyl ethyl ether in the present invention is a new synthesis method, and a new catalyst is adopted in the reaction. The reaction formula is as follows: [0005] [0006] The beneficial...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C43/23C07C41/09
Inventor 章平毅陆欢沈蔚
Owner 上海香料研究所
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