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羧甲基-β-环糊精的制备工艺研究

作  者:
王瑾;陈均志
单  位:
陕西科技大学化学与化工学院
关键词:
羧甲基-β-环糊精;取代度;制备
摘  要:
以β-环糊精及一氯乙酸为原料,通过亲核取代反应在碱性介质中制备羧甲基-β-环糊精。研究反应温度、反应时间和反应物料配比对羧甲基-β-环糊精取代度及产率的影响。结果表明,反应物ClCH2COOH与β-CD物质的量配比为8.5:1,NaOH与ClCH2COOH物质的量配比为2.5:1,在60℃下反应4h,可得到取代度为6.06产率为46%的羧甲基-β-环糊精。
译  名:
Preparation of Carboxymethyl-β-cyclodextrin
作  者:
WANG Jin,CHEN Jun-zhi(College of Chemistry and Chemical Engineering,Shaanxi University of Science and Technology,Xi'an 710021,China)
关键词:
carboxymethyl-β-cyclodextrin;degree of substitution;preparation
摘  要:
Carboxymethyl-β-cyclodextrin(CM-β-CD) was prepared in alkaline media by nucleophilic substitution reaction of β-CD and monochloroacetic acid.Influences of reaction temperature,reaction duration and reactant ratio on substitution degree and yield of CM-β-CD were discussed.Under optimized reaction conditions(reacting for 4 h at 60 ℃ and the molar ratios of monochloroacetic acid to β-CD and sodium hydroxide to monochloroacetic acid of 8.5:1 and 2.5:1,respectively),a substitution degree of 6.06 and a yield of 46% were achieved.

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