Method for preparing alpha-hexylcinnamyl aldehyde

A technology of hexyl cinnamaldehyde and n-hexanal, which is applied in chemical instruments and methods, preparation of carbon-based compounds, preparation of organic compounds, etc., can solve the problems of high price, cumbersome separation and purification process, and low yield, so as to reduce self-condensation Effects of side reactions, improvement of cross-condensation selectivity, and prolongation of catalyst life
CN113024367AActive Publication Date: 2021-06-25WANHUA CHEM GRP CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
WANHUA CHEM GRP CO LTD
Publication Date
2021-06-25

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Abstract

The invention provides a method for preparing alpha-hexylcinnamyl aldehyde. The method comprises the following steps: carrying out cross condensation on phenylpropanal and hexanal to obtain a 2-benzyl-2-octenal intermediate, and carrying out hydroisomerization on the intermediate to obtain alpha-hexylcinnamaldehyde. According to the synthesis route, phenylpropanal and hexanal which are simple, easy to obtain and low in cost are used as starting raw materials, and the use of an expensive n-octanal raw material in a traditional route is avoided; and secondly, the alpha-methylcinnamyl aldehyde is obtained at high yield through condensation and isomerization reactions, the route yield is high, and the method has a good economic value.
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Description

technical field

[0001] The invention belongs to the fields of fine chemicals and flavors and fragrances, and in particular relates to a method for preparing alpha-hexyl cinnamaldehyde. Background technique

[0002] α-Hexylcinnamaldehyde, also known as 2-hexylcinnamaldehyde, is a yellow oily liquid at room temperature, with a fresh and sweet jasmine fragrance, with a boiling point of 305°C and a flash point of >93°C. α-Hexylcinnamaldehyde is one of the most floral varieties in synthetic fragrances, and it has a pleasant oily green smell. It can be used in combination with many floral fragrances to make its fragrance better. In addition to being widely used in cosmetics, soaps, perfumes and other fields as daily flavors, α-hexyl cinnamaldehyde can also be used in food in a small amount as honey and fruity flavors.

[0003] At present, the main synthesis method of α-hexylcinnamaldehyde is the condensation reaction of benzaldehyde and n-octylaldehyde. Raw material benzaldeh...

Claims

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