引用本文:
陈刚, 陆嘉星, 徐承天, 陈良, 张五昌. L-缬氨酸甲酯修饰石墨电极不对称还原苯乙酮[J]. 应用化学,
1996, 13(3): 87-89.
Citation: Chen Gang, Lu Jiaxing, Xu Chengtian, Chen Liang, Zhang Wuchang. Asymmetric Reduction of Acetophenone Using L-Valine Methyl Ester Modified Graphite Electrode[J]. Chinese Journal of Applied Chemistry, 1996, 13(3): 87-89.
Citation: Chen Gang, Lu Jiaxing, Xu Chengtian, Chen Liang, Zhang Wuchang. Asymmetric Reduction of Acetophenone Using L-Valine Methyl Ester Modified Graphite Electrode[J]. Chinese Journal of Applied Chemistry, 1996, 13(3): 87-89.
L-缬氨酸甲酯修饰石墨电极不对称还原苯乙酮
English
Asymmetric Reduction of Acetophenone Using L-Valine Methyl Ester Modified Graphite Electrode
Abstract:
We have prepared covalently modified graphite electrodes(CelValM)that bind L-valine methyl ester to their surface via amide bonds,thereby providing a stable,chiral interfacial region for the reduction of acetophenone.The optical yield(o.y.)and chemical yield (c.y.)of S(-)-1-phenylethanol were measured as a function of CelValM cathode potential, current density,amount of electricity passed,substrate concentration,pH,and the number of repeated use of electrodes.The highest o.y.was 15.8%.The characteristics and kinetic parameters of electrode processes were determined by potentiodynamic method and rotating disk electrode.A possible mechanism of the asymmetric electroreduction of acetophenone was forwarded.
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Key words:
- L-valine methyl ester
- / modified electrode
- / asymmetric reduction
- / acetophenone
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