期刊
CHEMISTRY-A EUROPEAN JOURNAL
卷 -, 期 -, 页码 -出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/chem.202301034
关键词
convergent paired electrolysis; cross-coupling; electrochemistry; radicals; transition metal catalysis
Electrochemistry is a sustainable platform for studying radical-based reactions involving single-electron transfer. It offers a low-cost alternative to photochemistry by using electricity to drive electron flow. Paired electrolysis, which combines both anodic oxidation and cathodic reduction, is a promising approach to achieve redox-neutral reactions. However, the challenge lies in the gap between electrodes, making it difficult for reactive intermediates to react with their coupling partners. This concept article summarizes recent advances in overcoming this difficulty in radical-based convergent paired electrolysis.
Electrochemistry offers a sustainable platform for discovering reactions involving single-electron transfer (SET) that generates highly reactive and synthetically versatile radical species. Compared with photochemistry similarly specializing in SET which requires expensive photocatalysts, electrochemistry employs low-cost electricity to drive the electron flow. Paired electrolysis makes use of both half-reactions, thus obviating the need for sacrificial reactions and maximizing the atom and energy economy. In convergent paired electrolysis, anodic oxidation and cathodic reduction occur simultaneously to generate two intermediates, which are then coupled to furnish the product. It represents a distinctive approach to challenging redox-neutral reactions. However, the gap between the two electrodes makes it hard for a reactive intermediate to come across the other coupling partner. This concept article summarizes recent state-of-the-art advances on radical-based convergent paired electrolysis, which adopted different strategies to overcome the difficulty.
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