| 内消旋-和外消旋-2,3-二氰基-2,3-二苯基丁二酸二乙酯的热异构化反应 |
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| 引用本文： | 杨第伦,刘有成,高素莲. 内消旋-和外消旋-2,3-二氰基-2,3-二苯基丁二酸二乙酯的热异构化反应[J]. 高等学校化学学报, 1987, 8(8): 720 |
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| 作者姓名： | 杨第伦 刘有成 高素莲 |
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| 作者单位： | 兰州大学化学系 |
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| 摘 要： | 用高效液相色谱法测定了2,3-二氰基-2,3-二苯基丁二酸二乙酯的内消旋体(1)和外消旋体(2)在1,1,2,2-四氯乙烷中的热异构化反应动力学和活化参数。结果表明,在热力学上2比1更稳定,并从它们的构型与形成空间键的能力间的关系给予解释。
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| 收稿时间： | 1986-03-25 |
Thermal Isomerizations of meso- and dl-Diethyl 2,3-Dicyano-2,3 -Diphenylsuccinate |
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| Yang Dilun,Liu Youcheng,Gao Sulian. Thermal Isomerizations of meso- and dl-Diethyl 2,3-Dicyano-2,3 -Diphenylsuccinate[J]. Chemical Research In Chinese Universities, 1987, 8(8): 720 |
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| Authors: | Yang Dilun Liu Youcheng Gao Sulian |
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| Affiliation: | Department of Chemistry, Lanzhou University, Lanzhou |
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| Abstract: | The kinetics and activation parameters of thermal isomerization of the meso-isomer (1) and the dl-isomer(2) of diethyl 2,3-dicyano-2,3-diphenylsuccinate in 1,1,2, 2-tetrachloroethane were determined by means of HPLC. The experimental results showed that dl-isomer(2) was more stable than the meso-isomer(1). This fact was explained from the point of view of configuration and the ability to the formation of space bonds. |
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