| 1,2-双[2-甲基-5-(3,4-二氟苯基)噻吩-3-基]全氟环戊烯的合成 |
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| 引用本文： | 刘太奇,杨莉燕,于建香.1,2-双[2-甲基-5-(3,4-二氟苯基)噻吩-3-基]全氟环戊烯的合成[J].有机化学,2007,27(10):1282-1284. |
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| 作者姓名： | 刘太奇 杨莉燕 于建香 |
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| 作者单位： | 北京石油化工学院环境材料研究中心,北京,102617 |
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| 基金项目： | 北京印刷学院印刷包装材料与技术北京市重点实验室开放课题基金(No.KF050301)资助项目. |
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| 摘 要： | 在冰浴条件下, 2-甲基噻吩(1)与液溴反应生成3,5-二溴-2-甲基噻吩(2); 在－78 ℃条件下, 硼酸三丁酯加入2, 得到2-甲基-3-溴-5-硼酸基噻吩(3); 3,4-二氟溴苯与3反应得到2-甲基-3-溴-5-(3,4-二氟苯基)噻吩(4); 在－78 ℃下全氟环戊烯与4反应, 得到一种新的二芳基乙烯类光致变色化合物1,2-双2-甲基-5-(3,4-二氟苯基)噻吩-3-基]全氟环戊烯(DT-1). 用IR, NMR, MS和元素分析确定了化合物DT-1的结构, 并对该化合物的光致变色特性进行了初步研究.
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| 关 键 词： | 二芳基乙烯 光致变色 合成 |
| 收稿时间： | 2006-6-9 |
| 修稿时间： | 2006-06-09 |
Synthesis of 1,2-Bis[2-methyl-5-(3,4-difluorophenyl)-3-thienyl]- perfluorocyclopentene |
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| LIU Tai-Qi,YANG Li-Yan,YU Jian-Xiang.Synthesis of 1,2-Bis[2-methyl-5-(3,4-difluorophenyl)-3-thienyl]- perfluorocyclopentene[J].Chinese Journal of Organic Chemistry,2007,27(10):1282-1284. |
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| Authors: | LIU Tai-Qi YANG Li-Yan YU Jian-Xiang |
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| Institution: | Research Center of Ecomaterial, Beijing Institute of Petro-chemical Technology, Beijing 102617 |
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| Abstract: | 2-Methylthiophene (1) was treated with liquid bromine to form 3,5-dibromo-2-methylthiophene (2) in ice bath, which reacted with tributyl borate to give 2-methyl-3-bromo-5-boronate thiophene (3) at －78 ℃. Treatment of 3 with 3,4-difluorobrombenzene gave 2-methyl-3-bromo-5-(3,4-difluorophenyl)- thiophene (4). Finally, a novel photochromic dithienylethene compound, 1,2-bis2-methyl-5-(3,4-difluoro- phenyl)-3-thienyl]perfluorocyclopentene (DT-1), was synthesized by the reaction of 4 with perfluorocyclopentene at －78 ℃. The compound DT-1 was characterized by IR, NMR, MS spectra and elemental analysis, and its photochromic behavior was also discussed. |
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| Keywords: | dithienylethene photochromism synthesis |
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