Paired Electrolysis in the Simultaneous Production of Synthetic Intermediates and Substrates,Journal of the American Chemical Society

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Paired Electrolysis in the Simultaneous Production of Synthetic Intermediates and Substrates
Journal of the American Chemical Society ( IF 14.4 ) Pub Date : 2016-11-14 , DOI: 10.1021/jacs.6b08667
Mark J. Llorente ₁ , Bichlien H. Nguyen ₂ , Clifford P. Kubiak ₁ , Kevin D. Moeller ₂

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In electrochemical processes, an oxidation half-reaction is always paired with a reduction half-reaction. Although systems for reactions such as the reduction of CO2 can be coupled to water oxidation to produce O2 at the anode, large-scale O2 production is of limited value. One may replace a low-value half-reaction with a compatible half-reaction that can produce a valuable chemical compound and operate at a lower potential. In doing so, both the anodic and cathodic half-reactions yield desirable products with a decreased energy demand. Here we demonstrate a paired electrolysis in the case of the oxidative condensation of syringaldehyde and o-phenylenediamine to give 2-(3,5-dimethoxy-4-hydroxyphenyl)benzimidazole coupled with the reduction of CO2 to CO mediated by molecular electrocatalysts. We also present general principles for evaluating current-voltage characteristics and power demands in paired electrolyzers.

中文翻译：

同时生产合成中间体和底物的配对电解

在电化学过程中，氧化半反应总是与还原半反应配对。尽管诸如还原 CO2 等反应系统可以与水氧化耦合以在阳极产生 O2，但大规模 O2 生产的价值有限。人们可以用兼容的半反应代替低价值的半反应，后者可以产生有价值的化合物并在较低的电位下运行。这样做时，阳极和阴极半反应都会产生所需的产品，同时降低了能量需求。在这里，我们展示了在丁香醛和邻苯二胺氧化缩合得到 2-(3,5-二甲氧基-4-羟基苯基)苯并咪唑的情况下的配对电解，同时通过分子电催化剂将 CO2 还原为 CO。

更新日期：2016-11-14

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