| 5-乙基-2-(4-氰基苯基)-1,3-二噁烷的合成 |
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| 引用本文： | 杭德余.5-乙基-2-(4-氰基苯基)-1,3-二噁烷的合成[J].安徽大学学报(自然科学版),2005,29(6):68-69,86. |
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| 作者姓名： | 杭德余 |
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| 作者单位： | 安徽大学,化学化工学院,安徽,合肥,2300139 |
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| 基金项目： | 安徽省教育厅自然科学基金资助项目（2003kj018） |
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| 摘 要： | 以溴乙烷和丙二酸二乙酯为原料合成2-乙基丙二酸二乙酯,收率为90.4%.2-乙基丙二酸二乙酯经还原和环合两步反应合成了目标产品5-乙基-2-(4-氰基苯基)-1,3-二噁烷,两步反应总收率为71.9%.产品经DSC确证了相变温度,并用IR和1H-NMR对其结构进行了表征.
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| 关 键 词： | 2-乙基丙二酸二乙酯 5-乙基-2-(4-氰基苯基)-1 3-二噁烷 合成 |
| 文章编号： | 1000-2162（2005）06-0068-02 |
| 收稿时间： | 2005-05-27 |
| 修稿时间： | 2005-05-27 |
Synthesis of 5 - ethyl - 2 - (4 - cyanophenyl) - 1,3 - dioxane |
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| HANG De-yu.Synthesis of 5 - ethyl - 2 - (4 - cyanophenyl) - 1,3 - dioxane[J].Journal of Anhui University(Natural Sciences),2005,29(6):68-69,86. |
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| Authors: | HANG De-yu |
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| Institution: | School of Chemistry and Chemical Engineering, Anhui University, Hefei 230039, China |
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| Abstract: | 2-ethyl diethyl malonate was synthesized from diethyl malonate and bromoethane in 90.4% yield.5-ethyl-2-(4-Cyanophenyl)-1,3-Dioxane was prepared through reduction and cycloaddition reation in 71.9% yield.The phase transition of this liquid crystal compound was confimed by DSC.The product was characterized by IR and ~(1)H-NMR. |
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| Keywords: | 2-ethyl diethyl malonate 5-ethyl-2-(4-cyanophenyl)1 3-dioxane synthesis |
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