| Synthesis, spectroscopic properties, and tautomerism of mono-meso-substituted octamethylporphyrins |
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| 作者姓名： | LI Ming YAO Yi-Ming ZOU Jian-Zhong XU Zheng YOU Xiao-ZengCoordination Chemistry Institute Coordination Chemistry State Key Laboratory Nanjing University Nanjing Jiangsu China |
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| 作者单位： | LI，Ming YAO，Yi-Ming ZOU，Jian-Zhong XU，Zheng YOU，Xiao-ZengCoordination Chemistry Institute，Coordination Chemistry State Key Laboratory，Nanjing University，Nanjing，Jiangsu 210008，China |
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| 基金项目： | Project supported by the National Natural Science Foundation of China and a key research project from the State Science and Technology Commission. |
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| 摘 要： | The synthesis spectroscopic properties and tautomerism of four novel mono-meso substituted(R)-octamethylporphyrins (R=o-hydroxybenzyl, p-aminobenzyl, 4-pyridinyl, and ferro-cenyl) were investigated. It was found that the porphyrins 2, 3 could be directly prepared in good yields via the coupling reaction of salicylaldehyde and p-aminobenzyl aldehyde with octamethyl-l',8'-dideoxy-ac-biladiene dihydrobromide, respectively. The free energy of activation (G) of the tautomerism of the porphyrins was calculated and interpreted in terms of electronic and steric nature. In contrast with 2-substituted-5,10,15,20-tetraphenylporphyrins, the substituents in meso position do not change the relative amount of two tautomers a and 6.
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Synthesis, spectroscopic properties, and tautomerism of mono-meso-substituted octamethylporphyrins |
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| LI,Ming YAO,Yi-Ming ZOU,Jian-Zhong XU,Zheng YOU,Xiao-ZengCoordination Chemistry Institute,Coordination Chemistry State Key Laboratory,Nanjing University,Nanjing,Jiangsu ,China.Synthesis, spectroscopic properties, and tautomerism of mono-meso-substituted octamethylporphyrins[J].Chinese Journal of Chemistry,1994,12(3):237-242. |
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| Authors: | LI Ming YAO Yi-Ming ZOU Jian-Zhong XU Zheng YOU Xiao-ZengCoordination Chemistry Institute Coordination Chemistry State Key Laboratory Nanjing University Nanjing Jiangsu China |
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| Institution: | LI,Ming YAO,Yi-Ming ZOU,Jian-Zhong XU,Zheng YOU,Xiao-ZengCoordination Chemistry Institute,Coordination Chemistry State Key Laboratory,Nanjing University,Nanjing,Jiangsu 210008,China |
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| Abstract: | The synthesis spectroscopic properties and tautomerism of four novel mono-meso substituted(R)-octamethylporphyrins (R=o-hydroxybenzyl, p-aminobenzyl, 4-pyridinyl, and ferro-cenyl) were investigated. It was found that the porphyrins 2, 3 could be directly prepared in good yields via the coupling reaction of salicylaldehyde and p-aminobenzyl aldehyde with octamethyl-l',8'-dideoxy-ac-biladiene dihydrobromide, respectively. The free energy of activation (G) of the tautomerism of the porphyrins was calculated and interpreted in terms of electronic and steric nature. In contrast with 2-substituted-5,10,15,20-tetraphenylporphyrins, the substituents in meso position do not change the relative amount of two tautomers a and 6. |
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| Keywords: | Mono-meso-substituted octamethylporphyrins spectroscopy tautomerisra |
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