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制备2,3-环氧蒎烷工艺方法的改进

, PP. 75-80

Keywords: α-蒎烯,环氧化,过氧乙酸,相转移催化剂,2,3-环氧蒎烷

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Abstract:

采用自制高浓度过氧乙酸(88%)作为环氧化剂,以苄基三乙基氯化铵(TEBA)为相转移催化剂(PTC),催化氧化α-蒎烯环合成2,3-环氧蒎烷.考察比较了催化剂种类、用量,环氧化剂种类、用量,缚酸剂种类、用量,溶剂种类,反应时间和反应温度对反应结果的影响.其适宜的工艺条件为α-蒎烯1mol,TEBA1.0mmol,碳酸钠0.8mol,以二氯甲烷为溶剂,15℃下滴加过氧乙酸3mol,滴加结束后再机械搅拌2h.实验表明,该方法大大提高了催化效率,α-蒎烯的

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