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    • 11. 发明申请
    • METHOD OF SYNTHESIZING ALKYL GALLATES
    • 合成谷氨酸盐的方法
    • WO0130299A3
    • 2002-01-31
    • PCT/US0029510
    • 2000-10-26
    • KEMIN IND INC
    • SAS BENEDIKTCOPPENS BRUNOVAN HEMEL JOHAN
    • C07C67/08C07C69/88
    • C07C67/08C07C69/84
    • A method for synthesizing alkyl gallates. Gallic acid and an alkyl alcohol of the order of the desired gallate are heated in a reaction vessel in the presence of a catalyst such as sulfuric acid or para-toluene sulfonic acid. Water is generated, forming an azeotrope with the alkyl alcohol. Distillation or Soxhlet extraction using a drying agent removes the formed water. Upon completion of the reaction, the reaction mixture is added while stirring to an alkane solvent and cooled to produce crystals of the desired alkyl gallate. The crystals may be further recrystallized and washed to improve their purity.
    • 合成没食子酸烷基酯的方法。 在催化剂如硫酸或对甲苯磺酸的存在下,在反应容器中加热没食子酸和所需的没食子酸酯的顺序的烷基醇。 产生水,与烷基醇形成共沸物。 使用干燥剂的蒸馏或索格利特提取物除去形成的水。 反应完成后,将反应混合物在搅拌下加入到烷烃溶剂中并冷却以产生所需的没食子酸烷基酯的晶体。 晶体可进一步重结晶并洗涤以提高它们的纯度。