| Stereo- and regio-selectivity in the photosensitized dimerization of 1, 3-dimethylthymine in solution |
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| 引用本文： | HEI Xiaoming,SONG Qinhu,TANG Wenjian,WANG Hongbo,GUO Qingxiang,YU Shuqin. Stereo- and regio-selectivity in the photosensitized dimerization of 1, 3-dimethylthymine in solution[J]. 自然科学进展(英文版), 2005, 15(4): 375-379. DOI: 10.1080/10020070512331342260 |
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| 作者姓名： | HEI Xiaoming SONG Qinhu TANG Wenjian WANG Hongbo GUO Qingxiang YU Shuqin |
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| 作者单位： | Department of Chemistry,Department of Chemistry,Department of Chemistry,Department of Chemistry,Department of Chemistry,Department of Chemical Physics, University of Science and Technology of China, Hefei 230026, China |
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| 基金项目： | 国家自然科学基金，Special Fund for Doctoral Programme from the State Education Commission of China |
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| 摘 要： | The effects of reaction pathway and temperature on stereo- and regio-selectivity of photocycloaddition of 1, 3-dimethylthymine (DMT) which gives four cyclobutane type dimers in solution using acetone as the photosensitizer, are investigated by measuring the product distribution. It is demonstrated that the ground-state aggregation between DMT molecules mainly leads to (h-t)dimers, and the diffusion-controlled triplet dimerization is favorable to the formation of (h-h) dimers.
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| 关 键 词： | [2 + 2 ] photocycloaddition cyclobutane pyrimidine dimer stereoselectivity regioselectivity |
Stereo- and regio-selectivity in the photosensitized dimerization of 1, 3-dimethylthymine in solution |
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| Hei Xiaoming,Song Qinhua,TANG Wenjian,Wang Hongbo,Guo Qingxiang,YU Shuqin. Stereo- and regio-selectivity in the photosensitized dimerization of 1, 3-dimethylthymine in solution[J]. Progress in Natural Science, 2005, 15(4): 375-379. DOI: 10.1080/10020070512331342260 |
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| Authors: | Hei Xiaoming Song Qinhua TANG Wenjian Wang Hongbo Guo Qingxiang YU Shuqin |
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| Affiliation: | 1. Department of Chemistry
2. Department of Chemical Physics, University of Science and Technology of China, Hefei 230026, China |
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| Abstract: | The effects of reaction pathway and temperature on stereo- and regio-selectivity of photocycloaddition of 1, 3-dimethylthymine (DMT) which gives four cyclobutane type dimers in solution using acetone as the photosensitizer, are investigated by measuring the product distribution. It is demonstrated that the ground-state aggregation between DMT molecules mainly leads to (h-t)dimers, and the diffusion-controlled triplet dimerization is favorable to the formation of (h-h) dimers. |
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| Keywords: | [2 2 ] photocycloaddition cyclobutane pyrimidine dimer stereoselectivity regioselectivity |
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