1132-60-1Relevant articles and documents
Method for synthesizing azelaic acid monomethyl ester by catalyzing epoxy methyl oleate through ionic liquid
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Paragraph 0029-0031, (2020/12/30)
The invention relates to a method for synthesizing azelaic acid monomethyl ester by catalyzing epoxy methyl oleate with ionic liquid, which comprises the following steps: dissolving 1-(3-sulfonic acid) propyl piperidine dodecaphosphomolybdic acid ionic liquid and a certain amount of hydrogen peroxide by using a derivative epoxy methyl oleate of biodiesel as a raw material, dropwisely adding epoxymethyl oleate and a hydrogen peroxide solution, controlling the temperature, and fully stirring, after the reaction is finished, and arranging an oil layer on an upper surface, wherein an aqueous solution is dark green, obvious in layering and easy to separate; and drying the separated oily substance, carrying out high-vacuum rectification, and collecting the distillate at the temperature of 210-220 DEG C and the vacuum degree of 6-10mmHg to obtain a azelaic acid monomethyl ester finished product with the mass fraction of more than 99.0%. The method has the characteristics of simple process, no addition of other solvents and phase transfer catalysts, environment-friendly oxidation mode, no pollution and high added value of the product. The method has high reaction yield, can obtain a largeamount of high-purity azelaic acid monomethyl ester, and is easy for industrial application.