| A new approach to the synthesis of diacetals（diketals） pentaerythritol catalyzed by SO3H-functionalized ionic liquids |
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| 作者姓名： | Yuan Yuan Wang Yan Nan Xu Zhi Zhong Wang Li Yi Dai |
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| 作者单位： | Shanghai Key Laboratory of Green Chemistry and Chemical Process, Department of Chemistry, East China Normal University, Shanghai 200062, China |
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| 基金项目： | supported by National 863 High-Tech Research and Development Program of China(No. 2007AA05Z101) |
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| 摘 要： | <正>In this article,an efficient,simple and environmentally friendly approach to the synthesis of diacetals(diketals) pentaerythritol using SO_3H-functionalized ionic liquids(ILs) as catalysts was reported.The ILs show high catalytic activity and reusability with good to excellent yields of the desired products.Hammett method has been used to determine the acidity order of these ionic liquids and the results are consistent with the catalytic activities observed in acetalization reaction.Maximum product yield of 93%was observed on usingPSPy]OTf]as catalyst and it can be reused at least 8 times without obvious activity loss.
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| 关 键 词： | SO3H-functionalized ionic liquids Diacetals(diketals) pentaerythritol Catalyze Hammett method Reusability |
| 收稿时间： | 30 September 2009 |
A new approach to the synthesis of diacetals (diketals) pentaerythritol catalyzed by SO3H-functionalized ionic liquids |
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| Yuan Yuan Wang,Yan Nan Xu,Zhi Zhong Wang,Li Yi Dai.A new approach to the synthesis of diacetals (diketals) pentaerythritol catalyzed by SO3H-functionalized ionic liquids[J].Chinese Chemical Letters,2010,21(5):524-528. |
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| Authors: | Yuan Yuan Wang Yan Nan Xu Zhi Zhong Wang Li Yi Dai |
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| Affiliation: | Shanghai Key Laboratory of Green Chemistry and Chemical Process, Department of Chemistry, East China Normal University, Shanghai 200062, China |
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| Abstract: | In this article, an efficient, simple and environmentally friendly approach to the synthesis of diacetals (diketals) pentaerythritol using SO3H-functionalized ionic liquids (ILs) as catalysts was reported. The Ils show high catalytic activity and reusability with good to excellent yields of the desired products. Hammer method has been used to determine the acidity order of these ionic liquids and the results are consistent with the catalytic activities observed in acetalization reaction. Maximum product yield of 93% was observed on usingPSPy]Otf]as catalyst and it can be reused at least 8 times without obvious activity loss. |
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| Keywords: | SO3H-funetionalized ionic liquids Diaeetals (diketals) pentaerythritol Catalyze Hammett method Reusability |
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