Triethyl orthoacetate in reaction mixtures was separated from other components and determined by gas chromatography with external standard method .

应用气相色谱法测定 制 备 原 乙酸 三 乙酯反应产物中 产品 质量。

The 6-position hydroxyl group in sucrose was protected by the reaction of sucrose with triethyl orthoacetate . Sucralose was prepared by chlorinated sucrose 6-acetate with thionyl chloride / pyridine .

采用蔗糖与 原 乙酸 三 乙酯的反应保护蔗糖6-位羟基，亚硫酰氯/吡啶选择性氯化蔗糖6-乙酸酯制备三氯蔗糖。