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OALib Journal期刊
ISSN: 2333-9721
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α-蒎烯高选择性环氧化合成2,3-环氧蒎烷的研究
DOI: 10.3969/j.issn.1000-2006.2013.01.017, PP. 96-100
Keywords: α-蒎烯,环氧化,2,3-环氧蒎烷,α-龙脑烯醛,3-蒎酮
Abstract:
笔者以α-蒎烯为原料高选择性环氧化合成2,3-环氧蒎烷。探讨了过氧乙酸浓度及用量、碳酸钠用量、溶剂类型、反应温度及反应时间等对α-蒎烯转化率、2,3-环氧蒎烷选择性及产物组成的影响;确定了适宜的环氧化反应条件:反应温度为0～10℃;过氧乙酸浓度2.0mol/l,α-蒎烯与过氧乙酸物质量之比为1:1.1;α-蒎烯与碳酸钠物质量之比为1:1.2;反应时间2h;以氯仿为溶剂,溶剂用量为α-蒎烯与氯仿体积比1:1.7。在此条件下α-蒎烯转化率为99%以上,2,3-环氧蒎烷的选择性大于95%,反应产物中主要杂质α-龙脑烯醛和3-蒎酮的含量仅为3.3%和1.2%左右。
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