| 4-(trans-4-n-烷基环己基甲氧基)-4'-氰基联苯的合成 |
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| 引用本文： | 李瑞军,任国度.4-(trans-4-n-烷基环己基甲氧基)-4'-氰基联苯的合成[J].液晶与显示,2000,15(1):23-27. |
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| 作者姓名： | 李瑞军 任国度 |
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| 作者单位： | 1. 郑州大学,化学化工学院,河南郑州,450052
2. 大连理工大学,化工学院,辽宁大连,116012 |
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| 基金项目： | 国家计划委员会贤助项目 |
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| 摘 要： | 以ｔｒａｎｓ－４－ｎ－烷基环已基甲醇和４－溴－４’－羟基联苯为原料合成了一组４－（ｔｒａｎｓ－４－ｎ－烷基环已基甲氧基）－４’－氰基联苯类液晶化合物，用ＩＲ、ＭＳ、元素分析确证了化学结构。研究发现铜盐对ｔｒａｎｓ－４－ｎ－烷基环已基甲醇的溴代反应有催化作用；在相转移催化剂的作用下进行醚化获得较高收率；氰代反应以Ｎ－甲基－２吡咯烷酮溶剂效果较好。ＤＳＣ测试结果表明该类液晶化合物具有较高的清亮点。
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| 关 键 词： | 液晶 联苯 合成 |
| 文章编号： | 1007-2780(2000)01-0023-05 |
| 修稿时间： | 1999-11-23 |
Synthesis of 4-(4-trans-n-alkylcyclohexanemethoxy)-4'-Cyanobiphenyls |
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| LI Rui-jun,REN Guo-du.Synthesis of 4-(4-trans-n-alkylcyclohexanemethoxy)-4'-Cyanobiphenyls[J].Chinese Journal of Liquid Crystals and Displays,2000,15(1):23-27. |
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| Authors: | LI Rui-jun REN Guo-du |
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| Affiliation: | LI Rui-jun
(College of Chemistry and Chemical Engineering,Zhengzhou University, Zhengzhou 450058, China])REN Guo-du
(College of Chemical?Engineering,Dalian Univerqsity of Technology, Dalian 116012, China) |
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| Abstract: | The liquid crystal compounds of 4-(4-trans-4-n -alkylcyclohexanemethoxy )-4'-cyanobiphenyls has been synthesized from trans-4- n -alkylcyclohexanemethol and 4-bro-mo-4'-hydroxybiphenyls. The reaction conditions has been studied and the study showed that: cupric ion has the catalysis to the reaction of trans-4- n -alkylcyclohexanemethol and bromine hydride,etherifying reaction gets higher yield under the effect of phase transfer catalysis, N-methyl-2-pyrrolidone is the better solvent for cyanating reaction. All produc-tions were identified by IR, MS and element analyses, and the measurement of DSC showed that these compounds have higher clear point. |
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| Keywords: | liquid crystals trans-4-n-alkylcyclohexanemethol 4-bromo 4'-bydroxy biphenyis synthesis |
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