Synthesis of two beta-cyclodextrin derivatives containing a vinyl group

文献类型: 外文期刊

第一作者: Ha, Yi-Ming

作者: Ha, Yi-Ming

作者机构:

关键词: Cyclodextrin;Vinyl group;Esterification;Double bond content

期刊名称:CARBOHYDRATE RESEARCH ( 影响因子:2.104; 五年影响因子:2.192 )

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收录情况: SCI

摘要: beta-CD maleate (CDM) and beta-CD itaconate (CDI) were prepared by esterification of beta-cyclodextrin (beta-CD) with maleic acid and itaconic acid using phosphate as a catalyst in a semi-dry process. The esterification of beta-CD was carried out using [Itaconic acid] or [Maleic acid] 4 mol/mol of CD; M/L ratio 1:0.6; temperature 110 degrees C; [4-methoxyphenol] 2.5% amount of acid; reaction time 3.5 h. The esterification rates of CDM and CDI are 70.38% and 21.02%, respectively. We found that CDM and CDI were both monoesters. Here, we also established a new evaluation method for the rate of esterification. (C) 2014 Elsevier Ltd. All rights reserved.

分类号: O62

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