| 冠醚苯并恶唑菁染料的合成 |
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| 引用本文： | 刘秀芳,涂荣华,徐汉生.冠醚苯并恶唑菁染料的合成[J].有机化学,1992,12(4):405-408. |
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| 作者姓名： | 刘秀芳 涂荣华 徐汉生 |
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| 作者单位： | 武汉大学化学系，武汉大学化学系，武汉大学化学系 湖北，武汉，430072，湖北，武汉，430072，湖北，武汉，430072 |
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| 摘 要： | 本文报道含冠迷苯并恶唑菁染料及半菁染料的合成,采用一种简便方法合成了关健中间体2-甲基6,7-二羟基苯并恶唑:从2,3,4-三羟基苯乙酮肟经beckmann重排而得到,将它再与三甘醇或四甘醇二氯化物反应 ,分别得到相应的冠醚化合物:2-甲基-6,7-并(12-冠-4)苯并恶唑和2-甲基-6,7-并(15-冠-5)苯并恶唑,将它们制成相应的季铵盐 ,然后分别与原甲酸乙酯或对二甲胺基甲醛作用,得到相应的冠醚恶唑菁染料,或半菁染料.
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| 关 键 词： | 冠式化合物 苯乙酮 P 肟 三甘醇 菁染料 光敏剂 季胺 苯并恶唑 P 半菁染料 多甘醇 |
Synthesis of benzoxazole crown ether cyanine dyes |
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| LIU Xiu-Fang,TU Rong-Hua,XU Han-Sheng.Synthesis of benzoxazole crown ether cyanine dyes[J].Chinese Journal of Organic Chemistry,1992,12(4):405-408. |
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| Authors: | LIU Xiu-Fang TU Rong-Hua XU Han-Sheng |
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| Institution: | LIU Xiu-Fang,TU Rong-Hua,XU Han-Sheng Department of Chemistry,Wuhan University,430072 Wuhan,Hubei |
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| Abstract: | 2-methyl-6, 7-dihydroxyl benzoxazole was synthesized from 2,3, 4-trihydroxyl ace-tophenone oxime via Beckmann rearrangement conveniently. Then treatment of the dihydro-xyl benzoxazole with triglycol dichloride gave 2-methyl-6, 7-(12-crown-4) benzoxazole (1).Quaternization of 1 by ethyl iodide yielded 3. The reaction of quaternary ammonium salt 3with ethyl orthoformate then afforded the coresponding benzoxazole crown ether cyanine dye5. The reaction of 3 with p-dimethylamino benzaldehyde gave the hemicyanines 7. Via thesimilar sequence. the benzoxazole (15-crown-5) cyanine dye (6) and hemicyanine 8 weresynthesized from 2-methyl-6, 7-dihydroxyl benzoxazole and tetraglycol dichloride. |
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| Keywords: | crown ether cyanine dye hemicyanine dye benzoxazole photosensitizer |
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