| 在不同介质中均相及异相Diels-Alder反应的研究 |
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| 引用本文： | 谢周,曾奇,徐贤恭. 在不同介质中均相及异相Diels-Alder反应的研究[J]. 中山大学学报(自然科学版), 1987, 0(2) |
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| 作者姓名： | 谢周 曾奇 徐贤恭 |
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| 作者单位： | 中山大学化学系，中国科学院广州化学研究所，中山大学化学系 |
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| 摘 要： | Diels-Alder反应的定位选择性和立体选择性,近年很受注意,报道了许多研究结果.前线分子轨道理论很好地解释了众所周知的内型规则.但是,不同溶剂和添加物对于各种Diels-Alder反应的立体选择性都有不同的影响.Gonzalez和Holt在三元混合溶剂体系中,研究环戊二烯和甲基丙烯酸甲酯的环加成反应,发现当添加表面活
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| 关 键 词： | 双烯合成 立体化学 介质效应 |
Hetero-and Homogeneous Diels-Alder Reactions in Various Solvents |
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| Xie Zhou Zeng Qi Xu Xiangong. Hetero-and Homogeneous Diels-Alder Reactions in Various Solvents[J]. Acta Scientiarum Naturalium Universitatis Sunyatseni, 1987, 0(2) |
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| Authors: | Xie Zhou Zeng Qi Xu Xiangong |
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| Affiliation: | Xie Zhou Zeng Qi Xu Xiangong |
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| Abstract: | The ratios of stereoisomeric products in the hetero-and homogeneous DielsAlder additions of cyclopentadiene to acrolein in various solvents (diethyl ether,acetone, dichloromethane, ethanol and water) were determined. The endo/exo product ratio of the homogeneous reactions in the solutions increases slightly with increasing solvent polarity; Ia the heterogeneous:Diels-Alder reactions, however,the distribution of the products in different media is not a simple relationship. |
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| Keywords: | diene synthesis stereochemistry solvent effect |
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