| Synthesis and light absorption of benzotellurazole crown ether cyanine dye |
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| 作者姓名： | LUO Xue-Hong LIU Xiu-Fang XU Han-Sheng |
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| 作者单位： | LUO，Xue-Hong LIU，Xiu-Fang XU，Han-ShengDepartment of Chemistry，Wuhan University，Wuhan，Hubei 430072，China |
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| 基金项目： | Project supported by a doctoral special grant from the State of Education Commission and the National Natural Science Foundation of China. |
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| 摘 要： | Various methods for synthesis of 2-methyl-5,6-(1,4,7,10,13-pentaoxatridecamethyl-ene)benzotellurazole (8) are described. Under different conditions, alkylation of compound 8 with methyl iodide gave telluronium salt 1,2-dimethyl-5,6-(1,4,7,10,13-pentaoxatridecamethylene)benzo-tellurazolium iodide (15) or quaternary ammonium salt 2,3-dimethyl-5,6-(1,4,7,10,13-pentaoxatri-decamethylene)benzotellurazolium iodide (14) in high yields, repectively. The cyanine dye 3,3'-dimethyl-5,6,5',6'-bis(1,4,7,10,13-pentaoxatridecamethylene)telluracarbocyanine iodide (16) is obtained by condensation of 14 with ethyl orthoformate in acetic anhydride. The visible absorption of the cyanine dye is also discussed.
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Synthesis and light absorption of benzotellurazole crown ether cyanine dye |
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| LUO,Xue-Hong LIU,Xiu-Fang XU,Han-Sheng.Synthesis and light absorption of benzotellurazole crown ether cyanine dye[J].Chinese Journal of Chemistry,1995,13(4):340-348. |
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| Authors: | LUO Xue-Hong LIU Xiu-Fang XU Han-Sheng |
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| Institution: | LUO,Xue-Hong LIU,Xiu-Fang XU,Han-ShengDepartment of Chemistry,Wuhan University,Wuhan,Hubei 430072,China |
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| Abstract: | Various methods for synthesis of 2-methyl-5,6-(1,4,7,10,13-pentaoxatridecamethyl-ene)benzotellurazole (8) are described. Under different conditions, alkylation of compound 8 with methyl iodide gave telluronium salt 1,2-dimethyl-5,6-(1,4,7,10,13-pentaoxatridecamethylene)benzo-tellurazolium iodide (15) or quaternary ammonium salt 2,3-dimethyl-5,6-(1,4,7,10,13-pentaoxatri-decamethylene)benzotellurazolium iodide (14) in high yields, repectively. The cyanine dye 3,3'-dimethyl-5,6,5',6'-bis(1,4,7,10,13-pentaoxatridecamethylene)telluracarbocyanine iodide (16) is obtained by condensation of 14 with ethyl orthoformate in acetic anhydride. The visible absorption of the cyanine dye is also discussed. |
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| Keywords: | Crown ether benzotellurazole cyanine dye spectral sensitizer synthesis |
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