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Recent progress in cathodic reduction-enabled organic electrosynthesis: Trends, challenges, and opportunities

eScience 2022年第3期2卷 243-277页

作者： Binbin Huang Zemin Sun Genban Sun College of Arts and Sciences Beijing Normal UniversityZhuhai519087China College of Education for the Future Beijing Normal UniversityZhuhai519087China Center for Advanced Materials Research Beijing Normal UniversityZhuhai519087China Beijing Key Laboratory of Energy Conversion and Storage Materials Institution College of ChemistryBeijing Normal UniversityBeijing100875China

Compared with general redox chemistry,electrochemistry using the electron as a potent,controllable,yet traceless alternative to chemical oxidants/reductants usually offers more sustainable options for achieving selective organic *** its environmentally benign features gradually being uncovered and studied,organic electrosynthesis is currently undergoing a revival and becoming a rapidly growing area within the synthetic *** the electrochemical transformations,the anodically enabled ones have been far more extensively exploited than those driven by cathodic reduction,although both approaches are conceptually *** stimulate the development of cathodically enabled organic reactions,this review summarizes the recently developed reductive electrosynthetic protocols,discussing and highlighting reaction features,substrate scopes,applications,and plausible mechanisms to reveal the recent trends in this ***,cathodic reduction-enabled preparative organic transformations are categorized into four types:reduction of(1)unsaturated hydrocarbons,(2)heteroatom-containing carbon-based unsaturated systems,(3)saturated C-hetero or C–C polar/strained bonds,and(4)hetero-hetero *** from net electroreductive reactions,a few examples of reductive photo-electrosynthesis as well as paired electrolysis are also introduced,which offer opportunities to overcome certain limitations and improve synthetic *** electrochemically driven,transition metal-catalyzed reductive cross-couplings that have been comprehensively discussed in several other recent reviews are not included here.

关键词： Reductive organic electrosynthesis cathodic reduction Reductive hydrogenation Reductive functionalization Reductive bond cleavage

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Electrochemical degradation of p-nitrophenol with different processes

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Journal of Environmental Sciences 2010年第4期22卷 500-506页

作者： Ping Jiang,Jiti Zhou,Aili Zhang,Yijiang Zhong Key Laboratory of Industrial Ecology Environmental Engineering(MOE),School of Environmental & Biological Science & Technology,Dalian University of Technology,Dalian116024,China. Key Laboratory of Industrial Ecology Environmental Engineering (MOE) School of Environmental & Biological Science & Technology Dalian University of Technology Key Laboratory of Industrial Ecology Environmental Engineering (MOE) School ofEnvironmental & Biological Science & Technology Dalian University of Technology

The electrochemical degradation ofp-nitrophenol （PNP） under different conditions was investigated. The electrochemical behavior of PNP and its reduction product p-aminophenol （PAP） on stainless steel cathode and Ti/Pt anode through cyclic voltammetry were observed. Electrochemical degradation process was performed in an undivided cell and 92% PNP was removed corresponding to a 22% total organic carbon removal. A divided cell was also used and it was found that PNP degradation was mainly attributed to cathodic reduction, while anodic oxidation was responsible for PNP removal due to the reaction with hydroxyl radicals and surface oxide generated on the anode. The sequential electrolytic processes, reduction-oxidation and oxidation-reduction, were compared in the divided cell. In the case of reduction-oxidation process, the total organic carbon removal reached 40%, but PNP removal was the same with the undivided cell. A black deposit was found in the effluent and identified by Fourier transform infrared spectroscopy as a polymer of PAP produced by the 1,4-addition reaction of quinoneimine. Intermediates left in the solution such as hydroquinone, p-benzoquinone and PAP were determined by high performance liquid chromatography. Whereas, the oxidation-reduction process proved unsatisfying.

关键词： degradation cathodic reduction anodic oxidation sequential electrolysis

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Electrochemical Arylation of Electron-Deficient Arenes through Reductive Activation

Electrochemical Arylation of Electron-Deficient Arenes throu...

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中国化学会第十六届全国均相催化学术会议

作者：王攀 Zhang Heng Aiwen Lei 武汉大学 Institute for Advanced Studies (IAS) College of Chemistry and Molecular SciencesWuhan University

＜正＞Electron-deficient arenes are one kind of the most important components found in the structures of various functional molecules. Recently, many efforts have been paid to develop electrochemical C-H functionaliza... 详细信息

关键词： electrochemistry arylation cathodic reduction radical anion cross coupling

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