Method for preparing and purifying watermelon ketone

A purification method, the technology of watermelon ketone, applied in the direction of organic chemistry, etc., can solve problems such as unfavorable industrial production, and achieve the effect of reasonable and feasible synthetic route, reduced content of impurities, and mild reaction conditions
CN102584781AInactive Publication Date: 2012-07-18WUHAN UNIV OF TECH
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
WUHAN UNIV OF TECH
Publication Date
2012-07-18
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention relates to a method for preparing and purifying watermelon ketone. According to the method, 4-methylcatechol and 1,3-dichloroacetone are used as raw materials to prepare a watermelon ketone rough product, and the watermelon ketoxime with the high purity is obtained by carrying out oximation, crystallization and purification on the watermelon ketone rough product; and then, the watermelon ketone with high purity is obtained by carrying out oxime removing on the watermelon ketone through oxidization or reduction or hydrolysis. The method disclosed by the invention has the advantages of good selectivity, high yield, wide raw material source, low price, and reasonable and feasible process design.
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Description

technical field

[0001] The invention relates to a method for preparing and purifying spice compounds, in particular to a method for preparing and purifying watermelon ketone. Background technique

[0002] Watermelon ketone, foreign trade name is Calone / watermelon ketone, chemical name is 7-methyl-3,4-dihydro(2H)-1,5-benzodioxepene-3-one, cas: 28940- 11-6.

[0003] As a flavor and fragrance, watermelon ketone has been widely used in the daily chemical products and cosmetics market in recent years. Watermelon ketone itself not only has a fresh, fruit-like, soft and sweet smell, but also has a marine, algae, and dreamlike feeling, which can bring a new concept to the formulation of perfume. At present, only a few enterprises in the world produce watermelon ketone, and my country's demand for watermelon ketone mainly depends on imports, which provides a broad market for the development and application of watermelon ketone.

[0004] There are few reports about the synthesis a...

Claims

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