Production method and production system of methoxy elgenol

A production method and technology for sandalwood ether are applied in the field of production methods and production systems of sandalwood ether, which can solve the problems of inability to achieve green atomic chemical synthesis, difficulty in recycling and processing waste catalysts, and restricting the scope of use of products, so as to achieve green The effect of environmentally friendly production, green production process and low production cost

Active Publication Date: 2019-07-12
宁夏万香源生物科技有限公司
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Problems solved by technology

However, the methoxylation reaction is catalyzed by concentrated sulfuric acid, and the waste acid generated is not easy to handle; the use of heavy metal-containing compounds as catalysts during epoxidation limits the scope of use of the product, and it is difficult to recycle waste catalysts; In order to reduce the substrate, it is not easy to control in industrial production, and the treatment will produce a large amount of alcohol-containing wastewater, which will cause great environmental pollution.
Unable to achieve chemical synthesis of green atoms

Method used

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  • Production method and production system of methoxy elgenol
  • Production method and production system of methoxy elgenol
  • Production method and production system of methoxy elgenol

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preparation example Construction

[0040] Specifically, the preparation method of the modified strong acidic cation exchange resin comprises the following steps: using hydrochloric acid with a concentration of 0.1mol / L to 6mol / L to soak the strong acidic cation exchange resin to cause ion exchange; wherein, the amount of hydrochloric acid is 1 to 25 times the weight of the resin, the immersion time is 0.5h to 48h, and the immersion temperature is 10°C to 100°C. Drying the ion-exchanged strongly acidic cation exchange resin at a temperature of 25° C. to 100° C. prepares the modified strongly acidic cation exchange resin.

[0041] Preferably, the strongly acidic cation exchange resin is a styrene-based strongly acidic cation exchange resin, a macroporous cation exchange resin or a zeolite catalyst, specifically, it may be Amberlyst 35 cation exchange resin, NKC-9 cation exchange resin, D72 One or more of cation exchange resin, HZSM-5, mordenite, etc. are used in combination.

[0042] As preferably, the concentra...

specific Embodiment approach 1

[0082] Put the styrene-based strongly acidic cation exchange resin into a 0.1mol / L hydrochloric acid solution, soak it at room temperature for 48 hours at a liquid-to-solid mass ratio of 1:1, and then filter the resin. Chloride ions are entrained (tested by silver nitrate solution), and then dried at 100°C for 48 hours to obtain a modified strongly acidic cation exchange resin, which is ready for use.

specific Embodiment approach 2

[0084] Put the styrene-based strongly acidic cation exchange resin into a 0.5mol / L hydrochloric acid solution, soak it at 10°C for 24 hours at a liquid-solid mass ratio of 10:1, and then filter the resin, then wash the resin with deionized water until there is no entrained chloride ion (tested by silver nitrate solution), and then dried at 60°C for 48 hours to obtain a modified strongly acidic cation exchange resin, which is ready for use.

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Abstract

The invention provides a production method and production system of methoxy elgenol, and belongs to the technical field of synthetic perfume. The production method of the methoxy elgenol comprises thefollowing steps: taking modified strongly acidic cation exchange resin as a catalyst, reacting dihydromyrcene with methanol to prepare methoxy dihydromyrcene; then taking a hydration reaction catalyst as the catalyst to enable the methoxy dihydromyrcene to undergo hydration reaction with water in the presence of an organic solvent to prepare the methoxy elgenol. The production method has the advantages that the production process is simple; compared with the traditional process, the technological processes of acid separation, solvent extraction and the like are reduced; meanwhile, the preparation process of the epoxidation intermediate product is omitted, and the intrinsic safety is achieved. The production cost is low, and the manufacturing cost and the equipment cost of the traditionalcatalyst are reduced. The production process is green and environment-friendly, and other complex reaction substrates are not introduced, so that the synthesized sandalwood fragrance is closer to nature, and the application range of the product is greatly expanded.

Description

technical field [0001] The invention belongs to the technical field of synthetic perfumes, and in particular relates to a production method and production system of santalyl ether. Background technique [0002] The chemical formula of santalyl ether is C11H24O2, and its English name is Osyrol. It is a colorless and transparent liquid with stable chemical properties, low volatility, good color and not easy to change color, and is an ideal color for preparing flavors and fragrances. Sandalyl ether has a strong and strong sandalwood and floral aroma, and it is also a good fixative, which can improve the persistence and stability of the essence. Therefore, the research and development of synthetic sandalwood has practical significance. [0003] Sandalyl ether was first developed and successfully marketed by a British flavor and fragrance company. This route uses pinene as a raw material, which is first converted into pinane by hydrogenation reaction; then the ring is opened b...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C41/26C07C43/13B01J31/26
CPCC07C41/26C07C41/06B01J31/08B01J31/26B01J2231/32C07C43/13C07C43/15
Inventor 华建军陈春明刘思嘉宁高虎
Owner 宁夏万香源生物科技有限公司
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