Method of catalytic synthesis of Policosanol ester by using ionic liquid
A technology of ionic liquid and pliol ester, which is applied in the field of ionic liquid catalytic synthesis of pliol ester, can solve the problems of low bioavailability, less side reactions, and poor oil solubility, and achieve improved oil solubility, less side reactions, easy separation effect
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[0019] Example 1
[0020] Weigh 8.2 g of prissanol (90.2% octacosanol, 6.2% triacontanol and 3.5% hexadecanol), 4.0 g lauric acid in the reaction flask, and control the oil bath temperature to 150 o C. Turn on magnetic stirring, add 0.61 g of ionic liquid 1-propylsulfonic acid-3-methylimidazole hydrogensulfate after the sample is melted, pour in nitrogen, and start timing. After reacting for 0.5 h, the heating was stopped, and the sample was taken out after cooling to obtain a crude plyrol ester, and a pure plyrol fatty acid ester was obtained after separation. Analysis by high performance liquid chromatography showed that the conversion rate of Priol laurate was 98.8%.
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[0021] Example 2
[0022] Weigh 8.7 g of pristine (99% triacontanol) and 59.2 g of methyl oleate in the reaction flask, and control the oil bath temperature to 30 o C. Turn on magnetic stirring, add 0.034 g of ionic liquid 1-butanesulfonic acid-3-methylimidazole p-toluenesulfonate after the sample is melted, pour in nitrogen, and start timing. After reacting for 10 h, the heating was stopped, and the sample was taken out after cooling to obtain the crude piritol ester, and the pure piritol fatty acid ester was obtained after separation. Analysis by high performance liquid chromatography showed that the conversion rate of Priol oleate was 97.2%.
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