23696-85-7Relevant articles and documents
Method for synthesizing beta-damascenone
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, (2019/01/14)
The invention discloses a method for synthesizing beta-damascenone. The method mainly comprises the following steps: oxidizing citral through sodium chlorite; carrying out catalytic cyclization through concentrated phosphoric acid to obtain alpha-cyclogeranic acid; eliminating the alkalinity of the alpha-cyclogeranic acid under the action of thionyl chloride to obtain cyclogeranenone; carrying outaddition on the cyclogeranenone and allylmagnesium chloride and carrying out acidic isomerization to obtain alpha-damascenone; carrying out epoxidation on the alpha-damascenon through peroxyacetic acid, and carrying out alkaline ring opening through potassium carbonate; catalytically heating and dehydrating through para-toluenesulfonic acid to obtain the beta-damascenone. The method disclosed bythe invention has the advantages that raw materials are cheap and easy to obtain, reaction conditions are moderate and the operation is simple and convenient; another useful spice alpha-damascenone can be synchronously synthesized and the method is a method which is suitable for industrial production of the beta-damascenone.
A β- malaysian ketene method for the preparation of perfume
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, (2017/03/14)
The invention discloses a preparation method of beta-damascenone spice. The preparation method comprises the following steps: (1) by taking beta-ionone as an initial raw material, carrying out a reaction with hydroxylamine hydrochloride in an alkaline environment to obtain beta-ionone oxime; (2) carrying out a reaction on beta-ionone oxime and halogens and metal salt thereof to obtain a beta-ionone oxime isoxazole derivative; (3) acting on the eta-ionone oxime isoxazole derivative and sodium to generate beta-dihydrodamascenone; and (4) carrying out an oxidizing halogenating reaction on beta-dihydrodamascenone and free radicals of halogens and carrying out an elimination reaction of removing halogen hydride under the alkaline environment to obtain the beta-damascenone. The preparation method disclosed by the invention is cheap and easily available in raw materials, simple to operate, mild in reaction condition, high in yield of reactions and low in cost, and the solvent used can be recycled, so that the preparation method is a method suitable for industrially producing beta-damascenone spice.
Industrial manufacturing method of damascenone
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Paragraph 0047-0049, (2017/05/06)
The invention provides an industrial manufacturing method of damascenone. The industrial manufacturing method is characterized in that damascenone is obtained by oxidizing a compound A. The structural formula of the compound A is shown in the description. The production process and the synthesis route are optimized, in the production course, fewer side reactions are generated, aftertreatment is convenient, production conditions are mild, and the industrial manufacturing method is suitable for industrial production modes.