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    • 10. 发明授权
    • Method for preparing sucralose with high yield
    • 高产量制备三氯蔗糖的方法
    • US08536326B2
    • 2013-09-17
    • US13008920
    • 2011-01-19
    • Hengbo LiangZhengyou WangLi Rao
    • Hengbo LiangZhengyou WangLi Rao
    • C13K13/00C07H5/02
    • C07H5/02A23L27/37
    • A method for preparing sucralose with high yield, comprising the following preparation steps: First, negative effects of other impurities on reaction are reduced by first preparing a pure Vilsmeier chlorinating reagent. Second, side reactions are prevented by adding composite catalyst to increase selectivity of chlorination reaction. Third, by extracting less polar impurities using less polar solvent when sucralose-6-ester is undergoing deesterification, products are qualified at the very first time so that refining steps are avoided. Accordingly, product loss is reduced and product yield is increased. By using the present invention to prepare sucralose, product yield could be increased to more than 40%.
    • 一种以高产率制备三氯蔗糖的方法,包括以下制备步骤:首先,首先制备纯Vilsmeier氯化试剂,降低其他杂质对反应的负面影响。 其次,通过添加复合催化剂以提高氯化反应的选择性来防止副反应。 第三,当三氯半乳蔗糖-6-酯进行脱酯化时,通过使用极性较小的溶剂萃取较少的极性杂质,产品在第一次合格,从而避免了精制步骤。 因此,产品损失降低,产品产量增加。 通过使用本发明制备三氯半乳蔗糖,可以将产率提高至40%以上。