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Synthesis method and application of 7-methoxy-3,7-dimethyloctyl aldehyde

A technology of dimethyl octanal and a synthesis method, which is applied to the synthesis method and the application field of the obtained product, can solve the problems such as the influence of the number of varieties and the quality of the product, and achieves the requirements of low production equipment, high yield, and easy availability of raw materials. Effect

Inactive Publication Date: 2012-12-19
TIANNING FLAVOR JIANGSU
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, because natural animal and plant spices are often limited by natural conditions and processing factors, the number of varieties and product quality are affected to a certain extent.

Method used

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  • Synthesis method and application of 7-methoxy-3,7-dimethyloctyl aldehyde
  • Synthesis method and application of 7-methoxy-3,7-dimethyloctyl aldehyde

Examples

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Embodiment 1

[0020] A kind of 7-methoxy group-3, the synthetic method of 7-dimethyloctanal, reaction in two steps, the first step is intermediate enamine Ⅰ Synthesis, the second step is the synthesis of 7-methoxyl-3,7-dimethyloctanal.

[0021] First step: intermediate enamine Ⅰ The synthesis of dimethylamine deionized water solution with a concentration of 30% was put into the bottle, and the dehydrating agent 4A molecular sieve (the amount was 1% of that of the dimethylamine deionized water solution) was added, the reaction temperature was -5°C, and vigorously stirred Add dropwise 3,7-dimethyl-6-octenal with a concentration of 80% in dimethylamine deionized aqueous solution within 3 hours. After the dropwise addition, continue to react at 20°C for 8 hours. After the reaction is completed, pumping Filter, pour the filtrate into the liquid separation hole, and let it stand for stratification. The lower water layer was separated, the oil layer was fully mixed and washed with saturated sal...

Embodiment 2

[0024] A kind of 7-methoxy group-3,7-dimethyloctanal synthetic method, concrete steps are as follows:

[0025] First step: intermediate enamine Ⅰ The synthesis of dimethylamine deionized water solution with a concentration of 35% was put into the bottle, and an appropriate amount of dehydrating agent 4A molecular sieve (the amount was 1% of the dimethylamine deionized water solution) was added, and the reaction temperature was -10°C. Under stirring, add dropwise 3,7-dimethyl-6-octenal with a concentration of 90% in dimethylamine deionized aqueous solution within 4 hours. After the dropwise addition is completed, continue to react at 25°C for 2 hours. After the reaction is completed, carry out Suction filtration, pour the filtrate into the liquid separation hole, and let it stand for stratification. The lower water layer was separated, the oil layer was fully mixed and washed with saturated salt deionized water, and the lower water layer was separated again. Add an appropria...

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Abstract

The invention discloses a synthesis method and application of 7-methoxy-3,7-dimethyloctyl aldehyde. The synthesis method comprises the following steps: synthesis of intermediate enamine I: reacting a dimethyl amine deionized water solution with a certain concentration, a 4A molecular sieve and 3,7-dimethyl-6-octenal, carrying out vacuum filtration, and stratifying; and synthesis of 7-methoxy-3,7-dimethyloctyl aldehyde: reacting methanol, strong-acid solid composite catalyst, I, cyclohexane, potassium hydroxide and sodium carbonate, washing and stratifying. The low-price 3,7-dimethyl-6-octenal is used as the raw material, amines are utilized to implement carbonyl protection to convert the 3,7-dimethyl-6-octenal into enamine compounds, and the strong-acid solid composite catalyst is utilized to catalyze the etherification between the C=C bond and the methanol and implement neutralization and amine removal, thereby obtaining the target product. The invention has the advantages of simple production technique, mild operating conditions, low requirements for production equipment, cheap and accessible raw materials and high yield. The 7-methoxy-3,7-dimethyloctyl aldehyde has fresh subtle fragrance as well as fragrance of leaves, Convallaria majalis flowers and the like, and can be used in cosmetic essence.

Description

[0001] technical field [0002] The invention belongs to the field of food additives, and relates to a synthetic spice, in particular to a synthesis method of 7-methoxy-3,7-dimethyloctanal and an application of the obtained product. Background technique [0003] With the development of the national economy, people's life has gradually changed from subsistence to well-off, which provides a broad market for the development of spice industry products, especially natural spices are favored. However, because natural animal and plant spices are often limited by natural conditions and processing factors, the number of varieties and product quality are affected to a certain extent. The innovation and quality improvement of flavors are increasingly dependent on new synthetic flavors. Because synthetic spices are not restricted by natural conditions, the quality is stable, the scale of production can be arranged by people themselves, and the price of products is much cheaper than nat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C47/198C07C45/51A61K8/33A23L1/236A23L27/30
Inventor 吴义龙张树林周春飞
Owner TIANNING FLAVOR JIANGSU
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