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| 題名: | Calix[4]quinones. Part 4: The ClO2 oxidation of calix[4]arene dialkyl ethers |
| 作者: | Lin, Yu-Lung;Yu, Tzer-Shun;Wang, Wen-You;Lin, Lee-Gin |
| 貢獻者: | 化學系 |
| 日期: | 2006 |
| 上傳時間: | 2009-11-20 14:04:11 (UTC+8) |
| 摘要: | Except for the special case of calix[4]arene diethyl ether 1, the chlorine dioxide oxidation of dialkyl ethers 2-5 yielded only the corresponding calix[4]diquinone dialkyl ethers 8-11. Chlorine dioxide oxidation of calix[4]arene diethyl ether I produced two isomeric products 6 and 7, which were stable enough to be isolated by column chromatography. However, a slow conformational interconversion between isomeric pair 6 and 7 was observed at room temperature, and the equilibrium was reached after 400 h at 18 degrees C with an amount of 5:3 in favor of syn-isomer. (c) 2006 Published by Elsevier Ltd. |
| 關聯: | TETRAHEDRON Volume: 62 Issue: 25 Pages: 6082-6089 |
| 顯示於類別: | [化學系所] 期刊論文
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