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Xue M, Pan T, Shao Z, Wang W, Li H, Zhao L, Zhou X, Zhang Y. Sustainable Electrochemical Benzylic C-H Oxidation Using MeOH as an Oxygen Source. CHEMSUSCHEM 2024; 17:e202400028. [PMID: 38225209 DOI: 10.1002/cssc.202400028] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/08/2024] [Accepted: 01/15/2024] [Indexed: 01/17/2024]
Abstract
New methods and strategies for the direct oxidation of benzylic C-H bonds are highly desirable, owing to the importance of ketone motifs in significant organic transformations and the synthesis of valuable molecules, including pharmaceuticals, pesticides, and fine chemicals. Herein, we describe an electrochemical benzylic C-H oxidation strategy for the synthesis of ketones using MeOH as an oxygen source. Inexpensive and safe KBr serves as both an electrolyte and a bromide radical precursor in the reaction. This transformation also offers several advantages such as mild conditions, broad functional group tolerance, and operational simplicity. Mechanistic investigations by control experiments, radical scavenging experiments, electron paramagnetic resonance (EPR), kinetic studies, cyclic voltammetry (CV), and in-situ Fourier transform infrared (FTIR) spectroscopy support a pathway involving the formation and transformation of benzyl methyl ether via hydrogen atom transfer (HAT) and single-electron transfer (SET). The practical application of our strategy is highlighted by the successful synthesis of five pharmaceuticals, namely lenperone, melperone, diphenhydramine, cinnarizine, and flunarizine.
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Affiliation(s)
- Meng Xue
- College of Chemistry and Chemical Engineering, Qingdao University, 308 Ningxia Road, Qingdao, 266071, China
| | - Tao Pan
- College of Chemistry and Chemical Engineering, Qingdao University, 308 Ningxia Road, Qingdao, 266071, China
| | - Zhichao Shao
- College of Chemistry and Chemical Engineering, Qingdao University, 308 Ningxia Road, Qingdao, 266071, China
| | - Wenxuan Wang
- School of Ecology and Environment, Ningxia University, 489 Helan Mountain West Road, Yinchuan, 750021, China
| | - Hu Li
- School of Ecology and Environment, Ningxia University, 489 Helan Mountain West Road, Yinchuan, 750021, China
| | - Lixing Zhao
- College of Chemistry and Chemical Engineering, Qingdao University, 308 Ningxia Road, Qingdao, 266071, China
| | - Xin Zhou
- College of Chemistry and Chemical Engineering, Qingdao University, 308 Ningxia Road, Qingdao, 266071, China
| | - Yuexia Zhang
- College of Chemistry and Chemical Engineering, Qingdao University, 308 Ningxia Road, Qingdao, 266071, China
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2
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Ghosh D, Samal AK, Parida A, Ikbal M, Jana A, Jana R, Sahu PK, Giri S, Samanta S. Progress in Electrochemically Empowered C-O Bond Formation: Unveiling the Pathway of Efficient Green Synthesis. Chem Asian J 2024:e202400116. [PMID: 38584137 DOI: 10.1002/asia.202400116] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2024] [Revised: 03/12/2024] [Accepted: 04/04/2024] [Indexed: 04/09/2024]
Abstract
(C-X) bonds (X=C, N, O) are the main backbone for making different skeleton in the organic synthetic transformations. Among all the sustainable techniques, electro-organic synthesis for C-X bond formation is the advanced tool as it offers a greener and more cost-effective approach to chemical reactions by utilizing electrons as reagents. In this review, we want to explore the recent advancements in electrochemical C-O bond formation. The electrochemically driven C-O bond formation represents an emerging and exciting area of research. In this context, electrochemical techniques offers numerous advantages, including higher yields, cost-efficient production, and simplified work-up procedures. This method enables the continuous and consistent formation of C-O bonds in molecules, significantly enhancing overall reaction yields. Furthermore, both intramolecular and intermolecular C-O bond forming reaction provided valuable products of O-containing acyclic/cyclic analogue. Hence, carbonyl (C=O), ether -O-), and ester (-COOR) functionalization in both cyclic/acyclic analogues have been prepared continuously via this innovative pathway. In this context, we want to discuss one-decade electrochemical synthetic pathways of various C-O bond contains functional group in chronological manner. This review focused on all the synthetic aspects including mechanistic path and has also mentioned overall critical finding regarding the C-O bond formation via electrochemical pathways.
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Affiliation(s)
- Debosmit Ghosh
- Department of Chemistry, Bidhannagar College, Kolkata, 700064, India
| | - Aroop Kumar Samal
- Department of Chemistry, C.V. Raman Global UniversityInstitution, Bhubaneswar, 752054, India
| | - Anita Parida
- Department of Chemistry, C.V. Raman Global UniversityInstitution, Bhubaneswar, 752054, India
| | - Mohammed Ikbal
- Department of Chemistry, Berhampore Girls' College, Berhampore, 742101, India
| | - Akash Jana
- Department of Chemical Sciences, Indian Institute of Science Education and Research Kolkata, Kolkata, Mohanpur741246, India
| | - Rathin Jana
- Department of Chemistry, Shahid Matangini Hazra Govt. General Degree College for women, West Bengal, India
| | - Pradeepta Kumar Sahu
- Department of Chemistry, C.V. Raman Global UniversityInstitution, Bhubaneswar, 752054, India
| | - Soumen Giri
- Department of Chemistry, C.V. Raman Global UniversityInstitution, Bhubaneswar, 752054, India
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3
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Rani S, Aslam S, Lal K, Noreen S, Alsader KAM, Hussain R, Shirinfar B, Ahmed N. Electrochemical C-H/C-C Bond Oxygenation: A Potential Technology for Plastic Depolymerization. CHEM REC 2024; 24:e202300331. [PMID: 38063812 DOI: 10.1002/tcr.202300331] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2023] [Revised: 11/23/2023] [Indexed: 03/10/2024]
Abstract
Herein, we provide eco-friendly and safely operated electrocatalytic methods for the selective oxidation directly or with water, air, light, metal catalyst or other mediators serving as the only oxygen supply. Heavy metals, stoichiometric chemical oxidants, or harsh conditions were drawbacks of earlier oxidative cleavage techniques. It has recently come to light that a crucial stage in the deconstruction of plastic waste and the utilization of biomass is the selective activation of inert C(sp3 )-C/H(sp3 ) bonds, which continues to be a significant obstacle in the chemical upcycling of resistant polyolefin waste. An appealing alternative to chemical oxidations using oxygen and catalysts is direct or indirect electrochemical conversion. An essential transition in the chemical and pharmaceutical industries is the electrochemical oxidation of C-H/C-C bonds. In this review, we discuss cutting-edge approaches to chemically recycle commercial plastics and feasible C-C/C-H bonds oxygenation routes for industrial scale-up.
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Affiliation(s)
- Sadia Rani
- Department of Chemistry, The Women University Multan, Multan, 60000, Pakistan
| | - Samina Aslam
- Department of Chemistry, The Women University Multan, Multan, 60000, Pakistan
| | - Kiran Lal
- Department of Chemistry, The Women University Multan, Multan, 60000, Pakistan
| | - Sobia Noreen
- Institute of Chemistry, University of Sargodha, Sargodha, 40100, Pakistan
| | | | - Riaz Hussain
- Department of Chemistry, University of Education Lahore, D.G. Khan Campus, 32200, Pakistan
| | - Bahareh Shirinfar
- West Herts College - University of Hertfordshire, Watford, WD17 3EZ, London, United Kingdom
| | - Nisar Ahmed
- School of Chemistry, Cardiff University, Main Building, Park Place, Cardiff, CF10 3AT, United Kingdom
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4
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Bityukov OV, Skokova KV, Vil' VA, Nikishin GI, Terent'ev AO. Electrochemical Generation of Peroxy Radicals and Subsequent Peroxidation of 1,3-Dicarbonyls in an Undivided Cell. Org Lett 2024; 26:166-171. [PMID: 38153332 DOI: 10.1021/acs.orglett.3c03780] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2023]
Abstract
The generation of peroxy radicals from hydroperoxides with subsequent selective peroxidation of 1,3-dicarbonyls in an undivided electrochemical cell under constant current conditions is reported. The method provides a variety of peroxy-containing barbituric acids and 4-hydroxy-2(5H)-furanones with yields of up to 74%. Only the combination of anodic and cathodic processes provides efficient peroxidation by generating a set of alkoxy and peroxy radicals. NaNO3 acts as both an electrolyte and a redox mediator of radical reactions.
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Affiliation(s)
- Oleg V Bityukov
- N. D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, 47 Leninsky prospekt, Moscow, 119991, Russian Federation
- All-Russian Research Institute for Phytopathology B. Vyazyomy, Moscow Region 143050, Russian Federation
| | - Ksenia V Skokova
- N. D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, 47 Leninsky prospekt, Moscow, 119991, Russian Federation
- All-Russian Research Institute for Phytopathology B. Vyazyomy, Moscow Region 143050, Russian Federation
| | - Vera A Vil'
- N. D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, 47 Leninsky prospekt, Moscow, 119991, Russian Federation
- All-Russian Research Institute for Phytopathology B. Vyazyomy, Moscow Region 143050, Russian Federation
| | - Gennady I Nikishin
- N. D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, 47 Leninsky prospekt, Moscow, 119991, Russian Federation
| | - Alexander O Terent'ev
- N. D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, 47 Leninsky prospekt, Moscow, 119991, Russian Federation
- All-Russian Research Institute for Phytopathology B. Vyazyomy, Moscow Region 143050, Russian Federation
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5
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Wang Y, Dana S, Long H, Xu Y, Li Y, Kaplaneris N, Ackermann L. Electrochemical Late-Stage Functionalization. Chem Rev 2023; 123:11269-11335. [PMID: 37751573 PMCID: PMC10571048 DOI: 10.1021/acs.chemrev.3c00158] [Citation(s) in RCA: 17] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2023] [Indexed: 09/28/2023]
Abstract
Late-stage functionalization (LSF) constitutes a powerful strategy for the assembly or diversification of novel molecular entities with improved physicochemical or biological activities. LSF can thus greatly accelerate the development of medicinally relevant compounds, crop protecting agents, and functional materials. Electrochemical molecular synthesis has emerged as an environmentally friendly platform for the transformation of organic compounds. Over the past decade, electrochemical late-stage functionalization (eLSF) has gained major momentum, which is summarized herein up to February 2023.
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Affiliation(s)
| | | | | | - Yang Xu
- Institut für Organische
und Biomolekulare Chemie and Wöhler Research Institute for
Sustainable Chemistry (WISCh), Georg-August-Universität, Göttingen 37077, Germany
| | - Yanjun Li
- Institut für Organische
und Biomolekulare Chemie and Wöhler Research Institute for
Sustainable Chemistry (WISCh), Georg-August-Universität, Göttingen 37077, Germany
| | - Nikolaos Kaplaneris
- Institut für Organische
und Biomolekulare Chemie and Wöhler Research Institute for
Sustainable Chemistry (WISCh), Georg-August-Universität, Göttingen 37077, Germany
| | - Lutz Ackermann
- Institut für Organische
und Biomolekulare Chemie and Wöhler Research Institute for
Sustainable Chemistry (WISCh), Georg-August-Universität, Göttingen 37077, Germany
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6
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Luo MJ, Zhou W, Yang R, Ding H, Song XR, Xiao Q. Electrochemically enabled decyanative C(sp 3)-H oxygenation of N-cyanomethylamines to formamides. Org Biomol Chem 2023; 21:2917-2921. [PMID: 36942930 DOI: 10.1039/d3ob00313b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/18/2023]
Abstract
Selective oxygenation of C(sp3)-H bonds adjacent to nitrogen atoms is a highly attractive strategy for synthesizing various formamide derivatives while preserving the substrate skeletons. Herein, an environmentally benign electrochemically enabled decyanative C(sp3)-H oxygenation of N-cyanomethylamines using H2O as a carbonyl oxygen atom source is described, leading to the synthesis of a large class of formamides in good to excellent yields with a broad substrate scope under metal- and oxidant-free conditions. This electrochemical technology highlights the facile incorporation of N-formyl into some important bioactive molecules.
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Affiliation(s)
- Mu-Jia Luo
- Key Laboratory of Organic Chemistry of Jiangxi Province, Jiangxi Science & Technology Normal University, Nanchang, 330013, China.
| | - Wei Zhou
- Key Laboratory of Organic Chemistry of Jiangxi Province, Jiangxi Science & Technology Normal University, Nanchang, 330013, China.
| | - Ruchun Yang
- Key Laboratory of Organic Chemistry of Jiangxi Province, Jiangxi Science & Technology Normal University, Nanchang, 330013, China.
| | - Haixin Ding
- Key Laboratory of Organic Chemistry of Jiangxi Province, Jiangxi Science & Technology Normal University, Nanchang, 330013, China.
| | - Xian-Rong Song
- Key Laboratory of Organic Chemistry of Jiangxi Province, Jiangxi Science & Technology Normal University, Nanchang, 330013, China.
| | - Qiang Xiao
- Key Laboratory of Organic Chemistry of Jiangxi Province, Jiangxi Science & Technology Normal University, Nanchang, 330013, China.
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7
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Xiong Z, Nie H, Zhang S, Hu M, Qin C, Wang S, Ji F, Jiang G. Electrochemically Driven Selective Removal of the S═N Bond-Directing Group Using Cyclohexanone Oxime as the Mediator. J Org Chem 2023; 88:4334-4344. [PMID: 36922910 DOI: 10.1021/acs.joc.2c02940] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/18/2023]
Abstract
An inexpensive electrochemical induction system was used for the efficient reductive defunctionalization of sulfoximines through a radical pathway. This practical and robust strategy could be used for the removal of the S═N bond-directing group from various sulfoximines. The practicability of this method was demonstrated by its mild conditions, simple operation, one-pot procedure, gram-scale synthesis, and the undivided cell. Furthermore, preliminary mechanistic studies suggested that the reaction might proceed via a homocoupling reaction and a denitrification procedure.
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Affiliation(s)
- Zhicheng Xiong
- Guangxi Key Laboratory of Electrochemical and Magneto-chemical Functional Materials, College of Chemistry and Bioengineering, Guilin University of Technology, Guilin 541004, People's Republic of China
| | - Hongsheng Nie
- Guangxi Key Laboratory of Electrochemical and Magneto-chemical Functional Materials, College of Chemistry and Bioengineering, Guilin University of Technology, Guilin 541004, People's Republic of China
| | - Shuai Zhang
- Guangxi Key Laboratory of Electrochemical and Magneto-chemical Functional Materials, College of Chemistry and Bioengineering, Guilin University of Technology, Guilin 541004, People's Republic of China
| | - Meiqian Hu
- Guangxi Key Laboratory of Electrochemical and Magneto-chemical Functional Materials, College of Chemistry and Bioengineering, Guilin University of Technology, Guilin 541004, People's Republic of China
| | - Changsheng Qin
- Guangxi Key Laboratory of Electrochemical and Magneto-chemical Functional Materials, College of Chemistry and Bioengineering, Guilin University of Technology, Guilin 541004, People's Republic of China
| | - Shoucai Wang
- Guangxi Key Laboratory of Electrochemical and Magneto-chemical Functional Materials, College of Chemistry and Bioengineering, Guilin University of Technology, Guilin 541004, People's Republic of China
| | - Fanghua Ji
- Guangxi Key Laboratory of Electrochemical and Magneto-chemical Functional Materials, College of Chemistry and Bioengineering, Guilin University of Technology, Guilin 541004, People's Republic of China
| | - Guangbin Jiang
- Guangxi Key Laboratory of Electrochemical and Magneto-chemical Functional Materials, College of Chemistry and Bioengineering, Guilin University of Technology, Guilin 541004, People's Republic of China
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8
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Leech MC, Nagornîi D, Walsh JM, Kiaku C, Poole DL, Mason J, Goodall ICA, Devo P, Lam K. eFluorination Using Cheap and Readily Available Tetrafluoroborate Salts. Org Lett 2023; 25:1353-1358. [PMID: 36856464 DOI: 10.1021/acs.orglett.2c04305] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/02/2023]
Abstract
A practical electrochemical method for the rapid, safer, and mild synthesis of tertiary hindered alkyl fluorides from carboxylic acids has been developed without the need for hydrofluoric acid salts or non-glass reactors. In this anodic fluorination, collidinium tetrafluoroborate acts as both the supporting electrolyte and fluoride donor. A wide range of functional groups has been shown to be compatible, and the possibility of scale-up using flow electrochemistry has also been demonstrated.
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Affiliation(s)
- Matthew C Leech
- School of Science, Faculty of Engineering and Science, University of Greenwich, Chatham Maritime, Kent ME4 4TB, United Kingdom
| | - Dmitrii Nagornîi
- School of Science, Faculty of Engineering and Science, University of Greenwich, Chatham Maritime, Kent ME4 4TB, United Kingdom
| | - Jamie M Walsh
- School of Science, Faculty of Engineering and Science, University of Greenwich, Chatham Maritime, Kent ME4 4TB, United Kingdom
| | - Cyrille Kiaku
- School of Science, Faculty of Engineering and Science, University of Greenwich, Chatham Maritime, Kent ME4 4TB, United Kingdom
| | - Darren L Poole
- Discovery High-Throughput Chemistry, Medicinal Chemistry, GlaxoSmithKline Medicines Research Centre, Gunnels Wood Road, Stevenage, Hertfordshire SG1 2NY, United Kingdom
| | - Joseph Mason
- Discovery High-Throughput Chemistry, Medicinal Chemistry, GlaxoSmithKline Medicines Research Centre, Gunnels Wood Road, Stevenage, Hertfordshire SG1 2NY, United Kingdom
| | - Iain C A Goodall
- School of Science, Faculty of Engineering and Science, University of Greenwich, Chatham Maritime, Kent ME4 4TB, United Kingdom
| | - Perry Devo
- School of Science, Faculty of Engineering and Science, University of Greenwich, Chatham Maritime, Kent ME4 4TB, United Kingdom
| | - Kevin Lam
- School of Science, Faculty of Engineering and Science, University of Greenwich, Chatham Maritime, Kent ME4 4TB, United Kingdom
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9
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Nguyen K, Nguyen V, Tran H, Pham P. Organo-photocatalytic C-H bond oxidation: an operationally simple and scalable method to prepare ketones with ambient air. RSC Adv 2023; 13:7168-7178. [PMID: 36891491 PMCID: PMC9986805 DOI: 10.1039/d3ra00332a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2023] [Accepted: 02/17/2023] [Indexed: 03/08/2023] Open
Abstract
Oxidative C-H functionalization with O2 is a sustainable strategy to convert feedstock-like chemicals into valuable products. Nevertheless, eco-friendly O2-utilizing chemical processes, which are scalable yet operationally simple, are challenging to develop. Here, we report our efforts, via organo-photocatalysis, in devising such protocols for catalytic C-H bond oxidation of alcohols and alkylbenzenes to ketones using ambient air as the oxidant. The protocols employed tetrabutylammonium anthraquinone-2-sulfonate as the organic photocatalyst which is readily available from a scalable ion exchange of inexpensive salts and is easy to separate from neutral organic products. Cobalt(ii) acetylacetonate was found to be greatly instrumental to oxidation of alcohols and therefore was included as an additive in evaluating the alcohol scope. The protocols employed a nontoxic solvent, could accommodate a variety of functional groups, and were readily scaled to 500 mmol scale in a simple batch setting using round-bottom flasks and ambient air. A preliminary mechanistic study of C-H bond oxidation of alcohols supported the validity of one possible mechanistic pathway, nested in a more complex network of potential pathways, in which the anthraquinone form - the oxidized form - of the photocatalyst activates alcohols and the anthrahydroquinone form - the relevant reduced form of the photocatalyst - activates O2. A detailed mechanism, which reflected such a pathway and was consistent with previously accepted mechanisms, was proposed to account for formation of ketones from aerobic C-H bond oxidation of both alcohols and alkylbenzenes.
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Affiliation(s)
- Ky Nguyen
- Faculty of Chemistry, University of Science, Vietnam National University Hanoi Vietnam
| | - Van Nguyen
- Faculty of Chemistry, University of Science, Vietnam National University Hanoi Vietnam
| | - Hieu Tran
- Faculty of Chemistry, University of Science, Vietnam National University Hanoi Vietnam
| | - Phong Pham
- Faculty of Chemistry, University of Science, Vietnam National University Hanoi Vietnam
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10
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Lodh J, Paul S, Sun H, Song L, Schöfberger W, Roy S. Electrochemical organic reactions: A tutorial review. Front Chem 2023; 10:956502. [PMID: 36704620 PMCID: PMC9871948 DOI: 10.3389/fchem.2022.956502] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2022] [Accepted: 12/07/2022] [Indexed: 01/12/2023] Open
Abstract
Although the core of electrochemistry involves simple oxidation and reduction reactions, it can be complicated in real electrochemical organic reactions. The principles used in electrochemical reactions have been derived using physical organic chemistry, which drives other organic/inorganic reactions. This review mainly comprises two themes: the first discusses the factors that help optimize an electrochemical reaction, including electrodes, supporting electrolytes, and electrochemical cell design, and the second outlines studies conducted in the field over a period of 10 years. Electrochemical reactions can be used as a versatile tool for synthetically important reactions by modifying the constant electrolysis current.
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Affiliation(s)
- Joyeeta Lodh
- Eco-Friendly Applied Materials Laboratory (EFAML), Materials Science Centre, Department of Chemical Sciences, Mohanpur Campus, Indian Institute of Science, Education and Research, Kolkata, West Bengal, India
| | - Shounik Paul
- Eco-Friendly Applied Materials Laboratory (EFAML), Materials Science Centre, Department of Chemical Sciences, Mohanpur Campus, Indian Institute of Science, Education and Research, Kolkata, West Bengal, India
| | - He Sun
- Institute of Organic Chemistry, Laboratory for Sustainable Chemistry and Catalysis (LSusCat), Johannes Kepler University (JKU), Linz, Austria
| | - Luyang Song
- Institute of Organic Chemistry, Laboratory for Sustainable Chemistry and Catalysis (LSusCat), Johannes Kepler University (JKU), Linz, Austria
| | - Wolfgang Schöfberger
- Institute of Organic Chemistry, Laboratory for Sustainable Chemistry and Catalysis (LSusCat), Johannes Kepler University (JKU), Linz, Austria,*Correspondence: Wolfgang Schöfberger, ; Soumyajit Roy,
| | - Soumyajit Roy
- Eco-Friendly Applied Materials Laboratory (EFAML), Materials Science Centre, Department of Chemical Sciences, Mohanpur Campus, Indian Institute of Science, Education and Research, Kolkata, West Bengal, India,*Correspondence: Wolfgang Schöfberger, ; Soumyajit Roy,
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11
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Dorchies F, Serva A, Crevel D, De Freitas J, Kostopoulos N, Robert M, Sel O, Salanne M, Grimaud A. Controlling the Hydrophilicity of the Electrochemical Interface to Modulate the Oxygen-Atom Transfer in Electrocatalytic Epoxidation Reactions. J Am Chem Soc 2022; 144:22734-22746. [PMID: 36468903 DOI: 10.1021/jacs.2c10764] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/07/2022]
Abstract
The electrocatalytic epoxidation of alkenes at heterogeneous catalysts using water as the sole oxygen source is a promising safe route toward the sustainable synthesis of epoxides, which are essential building blocks in organic chemistry. However, the physicochemical parameters governing the oxygen-atom transfer to the alkene and the impact of the electrolyte structure on the epoxidation reaction are yet to be understood. Here, we study the electrocatalytic epoxidation of cyclooctene at the surface of gold in hybrid organic/aqueous mixtures using acetonitrile (ACN) solvent. Gold was selected, as in ACN/water electrolytes gold oxide is formed by reactivity with water at potentials less anodic than the oxygen evolution reaction (OER). This unique property allows us to demonstrate that a sacrificial mechanism is responsible for cyclooctene epoxidation at metallic gold surfaces, proceeding through cyclooctene activation, while epoxidation at gold oxide shares similar reaction intermediates with the OER and proceeds via the activation of water. More importantly, we show that the hydrophilicity of the electrode/electrolyte interface can be tuned by changing the nature of the supporting salt cation, hence affecting the reaction selectivity. At low overpotential, hydrophilic interfaces formed using strong Lewis acid cations are found to favor gold passivation. Instead, hydrophobic interfaces created by the use of large organic cations favor the oxidation of cyclooctene and the formation of epoxide. Our study directly demonstrates how tuning the hydrophilicity of electrochemical interfaces can improve both the yield and selectivity of anodic reactions at the surface of heterogeneous catalysts.
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Affiliation(s)
- Florian Dorchies
- Chimie du Solide et de l'Energie, UMR 8260, Collège de France, 75231Paris Cedex 05, France.,Réseau sur le stockage Electrochimique de l'Energie (RS2E), CNRS FR3459, 80039Amiens Cedex, France
| | - Alessandra Serva
- Réseau sur le stockage Electrochimique de l'Energie (RS2E), CNRS FR3459, 80039Amiens Cedex, France.,Sorbonne Université, CNRS, Physicochimie des Électrolytes et Nanosystèmes Interfaciaux, PHENIX, F-75005Paris, France
| | - Dorian Crevel
- Réseau sur le stockage Electrochimique de l'Energie (RS2E), CNRS FR3459, 80039Amiens Cedex, France.,Université Paris-Saclay, Univ Evry, CNRS, LAMBE, 91025Evry-Courcouronnes, France
| | - Jérémy De Freitas
- Laboratoire d'Electrochimie Moléculaire, Université de Paris, CNRS, F-75006Paris, France
| | - Nikolaos Kostopoulos
- Laboratoire d'Electrochimie Moléculaire, Université de Paris, CNRS, F-75006Paris, France
| | - Marc Robert
- Laboratoire d'Electrochimie Moléculaire, Université de Paris, CNRS, F-75006Paris, France.,Institut Universitaire de France (IUF), 75231Paris, France
| | - Ozlem Sel
- Chimie du Solide et de l'Energie, UMR 8260, Collège de France, 75231Paris Cedex 05, France.,Réseau sur le stockage Electrochimique de l'Energie (RS2E), CNRS FR3459, 80039Amiens Cedex, France
| | - Mathieu Salanne
- Réseau sur le stockage Electrochimique de l'Energie (RS2E), CNRS FR3459, 80039Amiens Cedex, France.,Sorbonne Université, CNRS, Physicochimie des Électrolytes et Nanosystèmes Interfaciaux, PHENIX, F-75005Paris, France.,Institut Universitaire de France (IUF), 75231Paris, France
| | - Alexis Grimaud
- Chimie du Solide et de l'Energie, UMR 8260, Collège de France, 75231Paris Cedex 05, France.,Réseau sur le stockage Electrochimique de l'Energie (RS2E), CNRS FR3459, 80039Amiens Cedex, France.,Department of Chemistry, Merkert Chemistry Center, Boston College, 2609 Beacon Street, Chestnut Hill, Massachusetts02467, United States
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12
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Selective functionalization of benzylic C(sp3)–H bonds to synthesize complex molecules. Chem 2022. [DOI: 10.1016/j.chempr.2022.10.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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13
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Stangier M, Scheremetjew A, Ackermann L. Chemo- and Site-Selective Electro-Oxidative Alkane Fluorination by C(sp 3 )-H Cleavage. Chemistry 2022; 28:e202201654. [PMID: 35844078 PMCID: PMC9804291 DOI: 10.1002/chem.202201654] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2022] [Indexed: 01/05/2023]
Abstract
Electrochemical fluorinations of C(sp3 )-H bonds with a nucleophilic fluoride source have been accomplished in a chemo- and site-selective fashion, avoiding the use of electrophilic F+ sources and stoichiometric oxidants. The introduced metal-free strategy exhibits high functional group tolerance, setting the stage for late-stage fluorinations of biorelevant motifs. The synthetic utility of the C(sp3 )-H fluorination was reflected by subsequent one-pot arylation of the generated benzylic fluorides.
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Affiliation(s)
- Maximilian Stangier
- Institut für Organische und Biomolekulare Chemie Wöhler Research Institute for Sustainable Chemistry (WISCh)Georg-August-Universität GöttingenTammannstrasse 237077GöttingenGermany
| | - Alexej Scheremetjew
- Institut für Organische und Biomolekulare Chemie Wöhler Research Institute for Sustainable Chemistry (WISCh)Georg-August-Universität GöttingenTammannstrasse 237077GöttingenGermany
| | - Lutz Ackermann
- Institut für Organische und Biomolekulare Chemie Wöhler Research Institute for Sustainable Chemistry (WISCh)Georg-August-Universität GöttingenTammannstrasse 237077GöttingenGermany
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14
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13C-NMR Chemical Shifts in 1,3-Benzazoles as a Tautomeric Ratio Criterion. Molecules 2022; 27:molecules27196268. [PMID: 36234805 PMCID: PMC9570581 DOI: 10.3390/molecules27196268] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2022] [Revised: 09/14/2022] [Accepted: 09/18/2022] [Indexed: 11/17/2022] Open
Abstract
Benzimidazole is an important heterocyclic fragment, present in many biologically active compounds with a great variety of therapeutic purposes. Most of the benzimidazole activities are explained through the existence of 1,3-tautomeric equilibrium. As the binding affinity of each tautomer to a protein target depends on an established bioactive conformation, the effect of tautomers on the ligand protein binding mechanism is determinant. In this work, we searched and analyzed a series of reported 13C-NMR spectra of benzazoles and benzazolidine-2-thiones with the purpose of estimating their tautomeric equilibrium. Herein, several approaches to determine this problem are presented, which makes it a good initial introduction to the non-expert reader. This chemical shift difference and C4/C7 signals of benzimidazolidine-2-thione and 1-methyl-2-thiomethylbenzimidazole as references were used in this work to quantitatively calculate, in solution, the pyrrole–pyridine tautomeric ratio in equilibrium. The analysis will help researchers to correctly assign the chemical shifts of benzimidazoles and to calculate their intracyclic or exocyclic tautomeric ratio as well as mesomeric proportion in benzimidazoles.
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15
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Kong J, Zhang F, Zhang C, Chang W, Liu L, Li J. An efficient electrochemical oxidation of C(sp3)-H bond for the synthesis of arylketones. MOLECULAR CATALYSIS 2022. [DOI: 10.1016/j.mcat.2022.112633] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/15/2022]
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16
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Hou ZW, Zhang MM, Yang WC, Wang L. Catalyst- and Oxidizing Reagent-Free Electrochemical Benzylic C(sp 3)-H Oxidation of Phenol Derivatives. J Org Chem 2022; 87:7806-7817. [PMID: 35648817 DOI: 10.1021/acs.joc.2c00455] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A site-selective electrochemical approach for the benzylic C(sp3)-H oxidation reaction of phenol derivatives along with hydrogen evolution has been developed. The protocol proceeds in an easily available undivided cell at room temperature under catalyst- and oxidizing reagent-free conditions. The corresponding aryl aldehydes and ketones are obtained in satisfactory yields, and the gram-scale synthesis is easy to be carried out.
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Affiliation(s)
- Zhong-Wei Hou
- Advanced Research Institute and Department of Chemistry, Taizhou University, Jiaojiang, Zhejiang, Taizhou 318000, P. R. China
| | - Ming-Ming Zhang
- Guangling College and School of Horticulture and Plant Protection, Yangzhou University, Jiangsu, Yangzhou 225009, P. R. China
| | - Wen-Chao Yang
- Guangling College and School of Horticulture and Plant Protection, Yangzhou University, Jiangsu, Yangzhou 225009, P. R. China
| | - Lei Wang
- Advanced Research Institute and Department of Chemistry, Taizhou University, Jiaojiang, Zhejiang, Taizhou 318000, P. R. China.,State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Shanghai 200032, P. R. China
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17
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Puls F, Seewald F, Grinenko V, Klauß HH, Knölker HJ. Mechanistic Studies on the Hexadecafluorophthalocyanine-Iron-Catalyzed Wacker-Type Oxidation of Olefins to Ketones*. Chemistry 2021; 27:16776-16787. [PMID: 34546596 PMCID: PMC9298363 DOI: 10.1002/chem.202102848] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2021] [Indexed: 12/15/2022]
Abstract
The hexadecafluorophthalocyanine-iron complex FePcF16 was recently shown to convert olefins into ketones in the presence of stoichiometric amounts of triethylsilane in ethanol at room temperature under an oxygen atmosphere. Herein, we describe an extensive mechanistic investigation for the conversion of 2-vinylnaphthalene into 2-acetylnaphthalene as model reaction. A variety of studies including deuterium- and 18 O2 -labeling experiments, ESI-MS, and 57 Fe Mössbauer spectroscopy were performed to identify the intermediates involved in the catalytic cycle of the oxidation process. Finally, a detailed and well-supported reaction mechanism for the FePcF16 -catalyzed Wacker-type oxidation is proposed.
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Affiliation(s)
- Florian Puls
- Fakultät Chemie, Technische Universität Dresden, Bergstraße 66, 01069, Dresden, Germany
| | - Felix Seewald
- Institute of Solid State and Materials Physics Fakultät Physik, Technische Universität Dresden, Zellescher Weg 16, 01069, Dresden, Germany
| | - Vadim Grinenko
- Institute of Solid State and Materials Physics Fakultät Physik, Technische Universität Dresden, Zellescher Weg 16, 01069, Dresden, Germany
| | - Hans-Henning Klauß
- Institute of Solid State and Materials Physics Fakultät Physik, Technische Universität Dresden, Zellescher Weg 16, 01069, Dresden, Germany
| | - Hans-Joachim Knölker
- Fakultät Chemie, Technische Universität Dresden, Bergstraße 66, 01069, Dresden, Germany
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18
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Li X, Bai F, Liu C, Ma X, Gu C, Dai B. Selective Electrochemical Oxygenation of Alkylarenes to Carbonyls. Org Lett 2021; 23:7445-7449. [PMID: 34517705 DOI: 10.1021/acs.orglett.1c02651] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
An efficient electrochemical method for benzylic C(sp3)-H bond oxidation has been developed. A variety of methylarenes, methylheteroarenes, and benzylic (hetero)methylenes could be converted into the desired aryl aldehydes and aryl ketones in moderate to excellent yields in an undivided cell, using O2 as the oxygen source and lutidinium perchlorate as an electrolyte. On the basis of cyclic voltammetry studies, 18O labeling experiments, and radical trapping experiments, a possible single-electron transfer mechanism has been proposed for the electrooxidation reaction.
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Affiliation(s)
- Xue Li
- Key Laboratory for Green Processing of Chemical Engineering of Xinjiang Bingtuan, School of Chemistry and Chemical Engineering, Shihezi University, Xinjiang, Uygur Autonomous Region 832000, China
| | - Fang Bai
- Key Laboratory for Green Processing of Chemical Engineering of Xinjiang Bingtuan, School of Chemistry and Chemical Engineering, Shihezi University, Xinjiang, Uygur Autonomous Region 832000, China
| | - Chaogan Liu
- Key Laboratory for Green Processing of Chemical Engineering of Xinjiang Bingtuan, School of Chemistry and Chemical Engineering, Shihezi University, Xinjiang, Uygur Autonomous Region 832000, China
| | - Xiaowei Ma
- Key Laboratory for Green Processing of Chemical Engineering of Xinjiang Bingtuan, School of Chemistry and Chemical Engineering, Shihezi University, Xinjiang, Uygur Autonomous Region 832000, China
| | - Chengzhi Gu
- Key Laboratory for Green Processing of Chemical Engineering of Xinjiang Bingtuan, School of Chemistry and Chemical Engineering, Shihezi University, Xinjiang, Uygur Autonomous Region 832000, China
| | - Bin Dai
- Key Laboratory for Green Processing of Chemical Engineering of Xinjiang Bingtuan, School of Chemistry and Chemical Engineering, Shihezi University, Xinjiang, Uygur Autonomous Region 832000, China
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19
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Selective electrochemical oxidation of aromatic hydrocarbons and preparation of mono/multi-carbonyl compounds. Sci China Chem 2021. [DOI: 10.1007/s11426-021-1061-x] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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20
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Lin Y, Jin J, Wang C, Wan JP, Liu Y. Electrochemical C-H Halogenations of Enaminones and Electron-Rich Arenes with Sodium Halide (NaX) as Halogen Source for the Synthesis of 3-Halochromones and Haloarenes. J Org Chem 2021; 86:12378-12385. [PMID: 34392684 DOI: 10.1021/acs.joc.1c01347] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Without employing an external oxidant, the simple synthesis of 3-halochromones and various halogenated electron-rich arenes has been realized with electrode oxidation by employing the simplest sodium halide (NaX, X = Cl, Br, I) as halogen source. This electrochemical method is advantageous for the simple and mild room temperature operation, environmental friendliness as well as broad substrate scope in both C-H bond donor and halogen source components.
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Affiliation(s)
- Yan Lin
- College of Chemistry and Chemical Engineering, Jiangxi Normal University, Nanchang330022, People's Republic of China
| | - Jun Jin
- BioDuro-Sundia, 233 North FuTe Road, Shanghai200131, People's Republic of China
| | - Chaoli Wang
- College of Chemistry and Chemical Engineering, Jiangxi Normal University, Nanchang330022, People's Republic of China
| | - Jie-Ping Wan
- College of Chemistry and Chemical Engineering, Jiangxi Normal University, Nanchang330022, People's Republic of China
| | - Yunyun Liu
- College of Chemistry and Chemical Engineering, Jiangxi Normal University, Nanchang330022, People's Republic of China
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21
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Li Z, Liu C, Geng W, Dong J, Chi Y, Hu C. Electrocatalytic ethylbenzene valorization using a polyoxometalate@covalent triazine framework with water as the oxygen source. Chem Commun (Camb) 2021; 57:7430-7433. [PMID: 34231578 DOI: 10.1039/d1cc03186d] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
Ethylbenzene (EB) oxidation is an important transformation in the chemical industry. Herein, PMo10V2@CTF, a noble metal free electrocatalyst, was used to promote the oxidative upgrading of EB. Under ambient conditions, 65% of EB was converted to three value-added products using water as the oxygen source yielding a total Faraday efficiency of 90.4%. This excellent performance is ascribed to the homogeneous dispersion of PMo10V2 and its dual role in the electrocatalytic process.
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Affiliation(s)
- Zhen Li
- Key Laboratory of Cluster Science Ministry of Education, Beijing Key Laboratory of Photoelectroic/Electrophotonic Conversion Materials, School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing, 100081, People's Republic of China.
| | - Chengpeng Liu
- Key Laboratory of Cluster Science Ministry of Education, Beijing Key Laboratory of Photoelectroic/Electrophotonic Conversion Materials, School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing, 100081, People's Republic of China.
| | - Weijie Geng
- Key Laboratory of Cluster Science Ministry of Education, Beijing Key Laboratory of Photoelectroic/Electrophotonic Conversion Materials, School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing, 100081, People's Republic of China.
| | - Jing Dong
- College of Chemistry and Materials Engineering, Beijing Technology and Business University (BTBU), 11 Fucheng Road, Beijing 100048, China
| | - Yingnan Chi
- Key Laboratory of Cluster Science Ministry of Education, Beijing Key Laboratory of Photoelectroic/Electrophotonic Conversion Materials, School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing, 100081, People's Republic of China.
| | - Changwen Hu
- Key Laboratory of Cluster Science Ministry of Education, Beijing Key Laboratory of Photoelectroic/Electrophotonic Conversion Materials, School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing, 100081, People's Republic of China.
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22
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Bhise RS, Patel KP, Ghorpade PV, Shankarling GS. Task‐Specific Deep Eutectic Solvent for Selective Oxidation of Aromatic Methyl to Aldehyde. ChemistrySelect 2021. [DOI: 10.1002/slct.202101109] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Rupali S. Bhise
- Department of Dyestuff Technology Institute of Chemical Technology, N. P. Marg, Matunga Mumbai 400019 India
| | - Khushbu P. Patel
- Department of Dyestuff Technology Institute of Chemical Technology, N. P. Marg, Matunga Mumbai 400019 India
| | - Prashant V. Ghorpade
- Department of Dyestuff Technology Institute of Chemical Technology, N. P. Marg, Matunga Mumbai 400019 India
| | - Ganapati S. Shankarling
- Department of Dyestuff Technology Institute of Chemical Technology, N. P. Marg, Matunga Mumbai 400019 India
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23
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Chicas-Baños DF, Frontana-Uribe BA. Electrochemical Generation and Use in Organic Synthesis of C-, O-, and N-Centered Radicals. CHEM REC 2021; 21:2538-2573. [PMID: 34047059 DOI: 10.1002/tcr.202100056] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2021] [Revised: 04/28/2021] [Accepted: 05/03/2021] [Indexed: 12/23/2022]
Abstract
During the last decade several research groups have been developing electrochemical procedures to access highly functionalized organic molecules. Among the most exciting advances, the possibility of using free radical chemistry has attracted the attention of the most important synthetic groups. Nowadays, electrochemical strategies based on these species with a synthetic purpose are published continuously in scientific journals, increasing the alternatives for the synthetic organic chemistry laboratories. Free radicals can be obtained in organic electrochemical reactions; thus, this review reassembles the last decade's (2010-2020) efforts of the electrosynthetic community to generate and take advantage of the C-, O-, and N-centered radicals' reactivity. The electrochemical reactions that occur, as well as the proposed mechanism, are discussed, trying to give clear information about the used conditions and reactivity of these reactive intermediate species.
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Affiliation(s)
- Diego Francisco Chicas-Baños
- Centro Conjunto Química Sustentable UAEMéx-UNAM, Km 14.5 Carretera Toluca-Ixtlahuaca, Toluca, 50200, Estado de México, Mexico
| | - Bernardo A Frontana-Uribe
- Centro Conjunto Química Sustentable UAEMéx-UNAM, Km 14.5 Carretera Toluca-Ixtlahuaca, Toluca, 50200, Estado de México, Mexico.,Universidad Nacional Autónoma de México, Instituto de Química, Ciudad Universitaria, Ciudad de México, 04510, Mexico
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24
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Kanyiva KS, Uchida K, Shibata T. Silver-Catalyzed C(sp 3)-H Sulfonylation for the Synthesis of Benzyl Sulfones Using Toluene Derivatives and α-Amino Acid Sulfonamides. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 2021. [DOI: 10.1246/bcsj.20200393] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Kyalo Stephen Kanyiva
- Global Center of Science and Engineering, School of Advanced Science and Engineering, Waseda University, 3-4-1 Okubo, Shinjuku, Tokyo 169-8555, Japan
| | - Kanako Uchida
- Department of Chemistry and Biochemistry, School of Advanced Science and Engineering, Waseda University, 3-4-1 Okubo, Shinjuku, Tokyo 169-8555, Japan
| | - Takanori Shibata
- Department of Chemistry and Biochemistry, School of Advanced Science and Engineering, Waseda University, 3-4-1 Okubo, Shinjuku, Tokyo 169-8555, Japan
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25
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Nickel-catalyzed oxidative dehydrogenative coupling of alkane with thiol for C(sp3)-S bond formation. Tetrahedron Lett 2021. [DOI: 10.1016/j.tetlet.2021.152950] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
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26
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Oliva M, Coppola GA, Van der Eycken EV, Sharma UK. Photochemical and Electrochemical Strategies towards Benzylic C−H Functionalization: A Recent Update. Adv Synth Catal 2021. [DOI: 10.1002/adsc.202001581] [Citation(s) in RCA: 31] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Monica Oliva
- Laboratory for Organic & Microwave-Assisted Chemistry (LOMAC) Department of Chemistry University of Leuven (KU Leuven) Celestijnenlaan 200F B-3001 Leuven Belgium
| | - Guglielmo A. Coppola
- Laboratory for Organic & Microwave-Assisted Chemistry (LOMAC) Department of Chemistry University of Leuven (KU Leuven) Celestijnenlaan 200F B-3001 Leuven Belgium
| | - Erik V. Van der Eycken
- Laboratory for Organic & Microwave-Assisted Chemistry (LOMAC) Department of Chemistry University of Leuven (KU Leuven) Celestijnenlaan 200F B-3001 Leuven Belgium
- Peoples' Friendship University of Russia (RUDN University) 6 Miklukho-Maklaya street RU-117198 Moscow Russia
| | - Upendra K. Sharma
- Laboratory for Organic & Microwave-Assisted Chemistry (LOMAC) Department of Chemistry University of Leuven (KU Leuven) Celestijnenlaan 200F B-3001 Leuven Belgium
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27
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Wang Y, Li P, Wang J, Liu Z, Wang Y, Lu Y, Liu Y, Duan L, Li W, Sarina S, Zhu H, Liu J. Visible-light photocatalytic selective oxidation of C(sp 3)–H bonds by anion–cation dual-metal-site nanoscale localized carbon nitride. Catal Sci Technol 2021. [DOI: 10.1039/d1cy00328c] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
Anion–cation dual-metal-site nanoscale localized carbon nitride exhibits a significantly enhanced photocatalytic activity for the oxidation of alkanes and alcohols with a high activity and a wide functional group tolerance.
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28
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Bian M, Hua J, Ma T, Xu J, Cai C, Yang Z, Liu C, He W, Fang Z, Guo K. Continuous-flow electrosynthesis of selenium-substituted iminoisobenzofuran via oxidative cyclization of olefinic amides and diselenides. Org Biomol Chem 2021; 19:3207-3212. [DOI: 10.1039/d1ob00236h] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
A novel method for the continuous synthesis of selenated iminoisobenzofurans by cyclization of olefinic amides with diselenides through electrochemical oxidation under metal-free and oxidant-free conditions has been developed.
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Affiliation(s)
- Mixue Bian
- College of Biotechnology and Pharmaceutical Engineering
- Nanjing Tech University
- Nanjing 211816
- China
| | - Jiawei Hua
- College of Biotechnology and Pharmaceutical Engineering
- Nanjing Tech University
- Nanjing 211816
- China
| | - Tao Ma
- College of Biotechnology and Pharmaceutical Engineering
- Nanjing Tech University
- Nanjing 211816
- China
| | - Jia Xu
- College of Biotechnology and Pharmaceutical Engineering
- Nanjing Tech University
- Nanjing 211816
- China
| | - Chen Cai
- College of Biotechnology and Pharmaceutical Engineering
- Nanjing Tech University
- Nanjing 211816
- China
| | - Zhao Yang
- College of Engineering
- China Pharmaceutical University
- Nanjing 210003
- China
| | - Chengkou Liu
- College of Biotechnology and Pharmaceutical Engineering
- Nanjing Tech University
- Nanjing 211816
- China
| | - Wei He
- College of Biotechnology and Pharmaceutical Engineering
- Nanjing Tech University
- Nanjing 211816
- China
| | - Zheng Fang
- College of Biotechnology and Pharmaceutical Engineering
- Nanjing Tech University
- Nanjing 211816
- China
- State Key Laboratory of Materials-Oriented Chemical Engineering
| | - Kai Guo
- College of Biotechnology and Pharmaceutical Engineering
- Nanjing Tech University
- Nanjing 211816
- China
- State Key Laboratory of Materials-Oriented Chemical Engineering
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29
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Lubov DP, Talsi EP, Bryliakov KP. Methods for selective benzylic C–H oxofunctionalization of organic compounds. RUSSIAN CHEMICAL REVIEWS 2020. [DOI: 10.1070/rcr4918] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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30
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Kharma A, Jacob C, Bozzi ÍAO, Jardim GAM, Braga AL, Salomão K, Gatto CC, Silva MFS, Pessoa C, Stangier M, Ackermann L, da Silva Júnior EN. Electrochemical Selenation/Cyclization of Quinones: A Rapid, Green and Efficient Access to Functionalized Trypanocidal and Antitumor Compounds. European J Org Chem 2020. [DOI: 10.1002/ejoc.202000216] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Affiliation(s)
- Ammar Kharma
- Institute of Exact Sciences, Department of Chemistry Federal University of Minas Gerais, UFMG 31270‐901 Belo Horizonte MG Brazil
- Division of Bioorganic Chemistry School of Pharmacy University of Saarland 66123 Saarbruecken Germany
| | - Claus Jacob
- Division of Bioorganic Chemistry School of Pharmacy University of Saarland 66123 Saarbruecken Germany
| | - Ícaro A. O. Bozzi
- Institute of Exact Sciences, Department of Chemistry Federal University of Minas Gerais, UFMG 31270‐901 Belo Horizonte MG Brazil
| | - Guilherme A. M. Jardim
- Department of Chemistry Federal University of Santa Catarina 88040‐900 Florianópolis SC Brazil
| | - Antonio L. Braga
- Department of Chemistry Federal University of Santa Catarina 88040‐900 Florianópolis SC Brazil
| | - Kelly Salomão
- Oswaldo Cruz Institute FIOCRUZ 21045‐900 Rio de Janeiro RJ Brazil
| | - Claudia C. Gatto
- Institute of Chemistry University of Brasilia 70904‐970 Brasilia DF Brazil
| | - Maria Francilene S. Silva
- Department of Physiology and Pharmacology School of Pharmacy Federal University of Ceará 60430‐270 Fortaleza CE Brazil
| | - Claudia Pessoa
- Department of Physiology and Pharmacology School of Pharmacy Federal University of Ceará 60430‐270 Fortaleza CE Brazil
| | - Maximilian Stangier
- Institut für Organische und Biomolekulare Chemie Georg‐August‐Universität Tammannstraße 2 37077 Göttingen Germany
| | - Lutz Ackermann
- Institut für Organische und Biomolekulare Chemie Georg‐August‐Universität Tammannstraße 2 37077 Göttingen Germany
| | - Eufrânio N. da Silva Júnior
- Institute of Exact Sciences, Department of Chemistry Federal University of Minas Gerais, UFMG 31270‐901 Belo Horizonte MG Brazil
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31
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Weng WZ, Guo JS, Liu KX, Shao TQ, Song LQ, Zhu YP, Sun YY, Meng QG. Metal-free oxidative C(sp3)–H functionalization: a facile route to quinoline formaldehydes from methyl-azaheteroarenes. CAN J CHEM 2020. [DOI: 10.1139/cjc-2019-0456] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
A facile protocol for the synthesis of quinoline formaldehydes via direct oxidative C–H bonds functionalization of methyl-azaheteroarenes in the presence of I2–DMSO has been described. This method is metal-free and easy to operate. This reaction provided a convenient route for the preparation of a range of important quinoline formaldehydes.
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Affiliation(s)
- Wei-Zhao Weng
- School of Pharmacy, Key Laboratory of Molecular Pharmacology and Drug Evaluation, Ministry of Education, Collaborative Innovation Center of Advanced Drug Delivery System and Biotech Drugs in Universities of Shandong, Yantai University, Shandong, Yantai 264005, P.R. China
| | - Jiang-Shan Guo
- School of Pharmacy, Key Laboratory of Molecular Pharmacology and Drug Evaluation, Ministry of Education, Collaborative Innovation Center of Advanced Drug Delivery System and Biotech Drugs in Universities of Shandong, Yantai University, Shandong, Yantai 264005, P.R. China
| | - Kai-Xuan Liu
- School of Pharmacy, Key Laboratory of Molecular Pharmacology and Drug Evaluation, Ministry of Education, Collaborative Innovation Center of Advanced Drug Delivery System and Biotech Drugs in Universities of Shandong, Yantai University, Shandong, Yantai 264005, P.R. China
| | - Tian-Qi Shao
- School of Pharmacy, Key Laboratory of Molecular Pharmacology and Drug Evaluation, Ministry of Education, Collaborative Innovation Center of Advanced Drug Delivery System and Biotech Drugs in Universities of Shandong, Yantai University, Shandong, Yantai 264005, P.R. China
| | - Li-Qun Song
- School of Pharmacy, Key Laboratory of Molecular Pharmacology and Drug Evaluation, Ministry of Education, Collaborative Innovation Center of Advanced Drug Delivery System and Biotech Drugs in Universities of Shandong, Yantai University, Shandong, Yantai 264005, P.R. China
| | - Yan-Ping Zhu
- School of Pharmacy, Key Laboratory of Molecular Pharmacology and Drug Evaluation, Ministry of Education, Collaborative Innovation Center of Advanced Drug Delivery System and Biotech Drugs in Universities of Shandong, Yantai University, Shandong, Yantai 264005, P.R. China
- School of Pharmacy, Key Laboratory of Molecular Pharmacology and Drug Evaluation, Ministry of Education, Collaborative Innovation Center of Advanced Drug Delivery System and Biotech Drugs in Universities of Shandong, Yantai University, Shandong, Yantai 264005, P.R. China
| | - Yuan-Yuan Sun
- School of Pharmacy, Key Laboratory of Molecular Pharmacology and Drug Evaluation, Ministry of Education, Collaborative Innovation Center of Advanced Drug Delivery System and Biotech Drugs in Universities of Shandong, Yantai University, Shandong, Yantai 264005, P.R. China
- School of Pharmacy, Key Laboratory of Molecular Pharmacology and Drug Evaluation, Ministry of Education, Collaborative Innovation Center of Advanced Drug Delivery System and Biotech Drugs in Universities of Shandong, Yantai University, Shandong, Yantai 264005, P.R. China
| | - Qing-Guo Meng
- School of Pharmacy, Key Laboratory of Molecular Pharmacology and Drug Evaluation, Ministry of Education, Collaborative Innovation Center of Advanced Drug Delivery System and Biotech Drugs in Universities of Shandong, Yantai University, Shandong, Yantai 264005, P.R. China
- School of Pharmacy, Key Laboratory of Molecular Pharmacology and Drug Evaluation, Ministry of Education, Collaborative Innovation Center of Advanced Drug Delivery System and Biotech Drugs in Universities of Shandong, Yantai University, Shandong, Yantai 264005, P.R. China
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32
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Li P, Wang Y, Wang X, Wang Y, Liu Y, Huang K, Hu J, Duan L, Hu C, Liu J. Selective Oxidation of Benzylic C-H Bonds Catalyzed by Cu(II)/{PMo 12}. J Org Chem 2020; 85:3101-3109. [PMID: 31944763 DOI: 10.1021/acs.joc.9b02997] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Precise catalytic regulation of carbon radical generation by a highly active oxygen radical to abstract the H atom in a C-H bond is an effective method for the selective activation of C-H synthetic chemistry. Herein, we report a facile catalyst system with commercially available copper(II)/{PMo12} to form a tert-butanol radical intermediate for the selective oxidation of benzylic C-H bonds. The reaction shows a broad range of substrates (benzyl methylene, benzyl alcohols) with good functional group tolerance and chemical selectivity. The corresponding carbonyl compounds were synthesized with good yields under mild conditions. DFT calculations and experimental analysis further demonstrated a reasonable carbon radical mechanism for this type of organic transformation reaction.
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Affiliation(s)
- Peihe Li
- Inner Mongolia Key Laboratory of Carbon Nanomaterials, Nano Innovation Institute (NII), College of Chemistry and Materials Science, Inner Mongolia University for Nationalities, Tongliao 028000, China
| | - Yingying Wang
- Inner Mongolia Key Laboratory of Carbon Nanomaterials, Nano Innovation Institute (NII), College of Chemistry and Materials Science, Inner Mongolia University for Nationalities, Tongliao 028000, China
| | - Xia Wang
- Inner Mongolia Key Laboratory of Carbon Nanomaterials, Nano Innovation Institute (NII), College of Chemistry and Materials Science, Inner Mongolia University for Nationalities, Tongliao 028000, China
| | - Yin Wang
- Inner Mongolia Key Laboratory of Carbon Nanomaterials, Nano Innovation Institute (NII), College of Chemistry and Materials Science, Inner Mongolia University for Nationalities, Tongliao 028000, China
| | - Ying Liu
- Inner Mongolia Key Laboratory of Carbon Nanomaterials, Nano Innovation Institute (NII), College of Chemistry and Materials Science, Inner Mongolia University for Nationalities, Tongliao 028000, China
| | - Keke Huang
- State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, College of Chemistry, Jilin University, Changchun 130012, China
| | - Jing Hu
- Inner Mongolia Key Laboratory of Carbon Nanomaterials, Nano Innovation Institute (NII), College of Chemistry and Materials Science, Inner Mongolia University for Nationalities, Tongliao 028000, China
| | - Limei Duan
- Inner Mongolia Key Laboratory of Carbon Nanomaterials, Nano Innovation Institute (NII), College of Chemistry and Materials Science, Inner Mongolia University for Nationalities, Tongliao 028000, China
| | - Changwen Hu
- Key Laboratory of Cluster Science of Ministry of Education, Beijing Key Laboratory of Photoelectronic/Electrophotonic, School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing 100081, China
| | - Jinghai Liu
- Inner Mongolia Key Laboratory of Carbon Nanomaterials, Nano Innovation Institute (NII), College of Chemistry and Materials Science, Inner Mongolia University for Nationalities, Tongliao 028000, China
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33
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Niu K, Song L, Hao Y, Liu Y, Wang Q. Electrochemical decarboxylative C3 alkylation of quinoxalin-2(1H)-ones with N-hydroxyphthalimide esters. Chem Commun (Camb) 2020; 56:11673-11676. [DOI: 10.1039/d0cc05391k] [Citation(s) in RCA: 47] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Electrochemical decarboxylative C3 alkylation of a wide range of quinoxalin-2(1H)-ones under metal- and additive-free conditions was reported.
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Affiliation(s)
- Kaikai Niu
- State Key Laboratory of Elemento-Organic Chemistry
- Research Institute of Elemento-Organic Chemistry
- College of Chemistry
- Nankai University
- Tianjin 300071
| | - Lingyun Song
- State Key Laboratory of Elemento-Organic Chemistry
- Research Institute of Elemento-Organic Chemistry
- College of Chemistry
- Nankai University
- Tianjin 300071
| | - Yanke Hao
- State Key Laboratory of Elemento-Organic Chemistry
- Research Institute of Elemento-Organic Chemistry
- College of Chemistry
- Nankai University
- Tianjin 300071
| | - Yuxiu Liu
- State Key Laboratory of Elemento-Organic Chemistry
- Research Institute of Elemento-Organic Chemistry
- College of Chemistry
- Nankai University
- Tianjin 300071
| | - Qingmin Wang
- State Key Laboratory of Elemento-Organic Chemistry
- Research Institute of Elemento-Organic Chemistry
- College of Chemistry
- Nankai University
- Tianjin 300071
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34
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Tanwar L, Börgel J, Ritter T. Synthesis of Benzylic Alcohols by C-H Oxidation. J Am Chem Soc 2019; 141:17983-17988. [PMID: 31689095 PMCID: PMC6863597 DOI: 10.1021/jacs.9b09496] [Citation(s) in RCA: 70] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2019] [Indexed: 01/29/2023]
Abstract
Selective methylene C-H oxidation for the synthesis of alcohols with a broad scope and functional group tolerance is challenging due to the high proclivity for further oxidation of alcohols to ketones. Here, we report the selective synthesis of benzylic alcohols employing bis(methanesulfonyl) peroxide as an oxidant. We attempt to provide a rationale for the selectivity for monooxygenation, which is distinct from previous work; a proton-coupled electron transfer mechanism (PCET) may account for the difference in reactivity. We envision that our method will be useful for applications in the discovery of drugs and agrochemicals.
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Affiliation(s)
| | | | - Tobias Ritter
- Max-Planck-Institut für Kohlenforschung, Kaiser-Wilhelm-Platz 1, D-45470 Mülheim an der
Ruhr, Germany
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35
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Lu F, Li J, Wang T, Li Z, Jiang M, Hu X, Pei H, Yuan F, Lu L, Lei A. Electrochemical Oxidative C−H Sulfonylation of Anilines. ASIAN J ORG CHEM 2019. [DOI: 10.1002/ajoc.201900447] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Fangling Lu
- College of Chemistry & Chemical EngineeringJiangxi Normal University Nanchang 330022, Jiangxi P. R. China
| | - Jun Li
- College of Chemistry & Chemical EngineeringJiangxi Normal University Nanchang 330022, Jiangxi P. R. China
| | - Tao Wang
- College of Chemistry & Chemical EngineeringJiangxi Normal University Nanchang 330022, Jiangxi P. R. China
| | - Zhen Li
- College of Chemistry & Chemical EngineeringJiangxi Normal University Nanchang 330022, Jiangxi P. R. China
| | - Minbao Jiang
- College of Chemistry & Chemical EngineeringJiangxi Normal University Nanchang 330022, Jiangxi P. R. China
| | - Xingxing Hu
- College of Chemistry & Chemical EngineeringJiangxi Normal University Nanchang 330022, Jiangxi P. R. China
| | - Hongqiao Pei
- College of Chemistry & Chemical EngineeringJiangxi Normal University Nanchang 330022, Jiangxi P. R. China
| | - Feng Yuan
- College of Chemistry & Chemical EngineeringJiangxi Normal University Nanchang 330022, Jiangxi P. R. China
| | - Lijun Lu
- College of Chemistry and Molecular Sciences The Institute for Advanced Studies (IAS)Wuhan University Wuhan, Hubei 430072 P. R. China
| | - Aiwen Lei
- College of Chemistry & Chemical EngineeringJiangxi Normal University Nanchang 330022, Jiangxi P. R. China
- College of Chemistry and Molecular Sciences The Institute for Advanced Studies (IAS)Wuhan University Wuhan, Hubei 430072 P. R. China
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36
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Chen B, Yang Y, Yang Y, Liu S, Chen Q, Zeng X, Xu B. Effects of the Hydrogen Bonding Network on Electrophilic Activation and Electrode Passivation: Electrochemical Chlorination and Bromination of Aromatics. ChemElectroChem 2019. [DOI: 10.1002/celc.201900869] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Bocheng Chen
- Key Laboratory of Science and Technology of Eco-Textiles Ministry of Education College of Chemistry, Chemical Engineering and BiotechnologyDonghua University Shanghai 201620 China
| | - Yi Yang
- Key Laboratory of Science and Technology of Eco-Textiles Ministry of Education College of Chemistry, Chemical Engineering and BiotechnologyDonghua University Shanghai 201620 China
| | - Yuhao Yang
- Key Laboratory of Science and Technology of Eco-Textiles Ministry of Education College of Chemistry, Chemical Engineering and BiotechnologyDonghua University Shanghai 201620 China
| | - Shiwen Liu
- Key Laboratory of Science and Technology of Eco-Textiles Ministry of Education College of Chemistry, Chemical Engineering and BiotechnologyDonghua University Shanghai 201620 China
| | - Qianjin Chen
- Key Laboratory of Science and Technology of Eco-Textiles Ministry of Education College of Chemistry, Chemical Engineering and BiotechnologyDonghua University Shanghai 201620 China
| | - Xiaojun Zeng
- Key Laboratory of Science and Technology of Eco-Textiles Ministry of Education College of Chemistry, Chemical Engineering and BiotechnologyDonghua University Shanghai 201620 China
| | - Bo Xu
- Key Laboratory of Science and Technology of Eco-Textiles Ministry of Education College of Chemistry, Chemical Engineering and BiotechnologyDonghua University Shanghai 201620 China
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37
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Wan C, Song RJ, Li JH. Electrooxidative 1,2-Bromoesterification of Alkenes with Acids and N-Bromosuccinimide. Org Lett 2019; 21:2800-2803. [DOI: 10.1021/acs.orglett.9b00771] [Citation(s) in RCA: 58] [Impact Index Per Article: 11.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Chao Wan
- Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources Recycle, Nanchang Hangkong University, Nanchang 330063, China
| | - Ren-Jie Song
- Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources Recycle, Nanchang Hangkong University, Nanchang 330063, China
| | - Jin-Heng Li
- Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources Recycle, Nanchang Hangkong University, Nanchang 330063, China
- State Key Laboratory of Chemo/Biosensing and Chemometrics, Hunan University, Changsha 410082, China
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38
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Geng S, Xiong B, Zhang Y, Zhang J, He Y, Feng Z. Thiyl radical promoted iron-catalyzed-selective oxidation of benzylic sp3 C–H bonds with molecular oxygen. Chem Commun (Camb) 2019; 55:12699-12702. [DOI: 10.1039/c9cc06584a] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
A ligand-free iron-catalyzed method for the oxygenation of benzylic sp3 C–H bonds by molecular oxygen (1 atm) using a thiyl radical as a cocatalyst has been developed.
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Affiliation(s)
- Shasha Geng
- Chongqing Key Laboratory of Natural Product Synthesis and Drug Research
- School of Pharmaceutical Sciences
- Chongqing University
- Chongqing
- P. R. China
| | - Baojian Xiong
- Chongqing Key Laboratory of Natural Product Synthesis and Drug Research
- School of Pharmaceutical Sciences
- Chongqing University
- Chongqing
- P. R. China
| | - Yun Zhang
- Chongqing Key Laboratory of Natural Product Synthesis and Drug Research
- School of Pharmaceutical Sciences
- Chongqing University
- Chongqing
- P. R. China
| | - Juan Zhang
- Chongqing Key Laboratory of Natural Product Synthesis and Drug Research
- School of Pharmaceutical Sciences
- Chongqing University
- Chongqing
- P. R. China
| | - Yun He
- Chongqing Key Laboratory of Natural Product Synthesis and Drug Research
- School of Pharmaceutical Sciences
- Chongqing University
- Chongqing
- P. R. China
| | - Zhang Feng
- Chongqing Key Laboratory of Natural Product Synthesis and Drug Research
- School of Pharmaceutical Sciences
- Chongqing University
- Chongqing
- P. R. China
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39
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Dou GY, Jiang YY, Xu K, Zeng CC. Electrochemical Minisci-type trifluoromethylation of electron-deficient heterocycles mediated by bromide ions. Org Chem Front 2019. [DOI: 10.1039/c9qo00552h] [Citation(s) in RCA: 78] [Impact Index Per Article: 15.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
An electrochemical methodology for the Minisci-type trifluoromethylation of electron-deficient heterocycles mediated by cheap and easily available bromide ions has been developed.
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Affiliation(s)
- Gui-Yuan Dou
- Beijing Key Laboratory of Environmental and Viral Oncology
- College of Life Science & Bioengineering
- Beijing University of Technology
- Beijing 100124
- China
| | - Yang-Ye Jiang
- Beijing Key Laboratory of Environmental and Viral Oncology
- College of Life Science & Bioengineering
- Beijing University of Technology
- Beijing 100124
- China
| | - Kun Xu
- Beijing Key Laboratory of Environmental and Viral Oncology
- College of Life Science & Bioengineering
- Beijing University of Technology
- Beijing 100124
- China
| | - Cheng-Chu Zeng
- Beijing Key Laboratory of Environmental and Viral Oncology
- College of Life Science & Bioengineering
- Beijing University of Technology
- Beijing 100124
- China
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40
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Wang Q, Yuan T, Liu Q, Xu Y, Xie G, Lv X, Ding S, Wang X, Li C. External oxidant-free oxidation/[3+2] cycloaddition/aromatization cascade: electrochemical synthesis of polycyclic N-heterocycles. Chem Commun (Camb) 2019; 55:8398-8401. [DOI: 10.1039/c9cc04336e] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
The extent of the electrochemical oxidative [3+2] cycloaddition/aromatization cascade can be regulated with the assistance of redox mediators. Isoquinolinium salts as alternative azomethine ylide precursors afforded fully aromatized N-heterocycles.
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Affiliation(s)
- Qiang Wang
- School of Environment and Civil Engineering
- Dongguan University of Technology
- Dongguan
- P. R. China
- Department of Applied Chemistry
| | - Ting Yuan
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials
- Zhejiang Normal University
- Jinhua 321004
- P. R. China
| | - Qiang Liu
- School of Environment and Civil Engineering
- Dongguan University of Technology
- Dongguan
- P. R. China
- Department of Applied Chemistry
| | - Yong Xu
- School of Environment and Civil Engineering
- Dongguan University of Technology
- Dongguan
- P. R. China
- Department of Applied Chemistry
| | - Guanqun Xie
- School of Environment and Civil Engineering
- Dongguan University of Technology
- Dongguan
- P. R. China
| | - Xin Lv
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials
- Zhejiang Normal University
- Jinhua 321004
- P. R. China
| | - Shujiang Ding
- Department of Applied Chemistry
- School of Science
- Xi’an Jiaotong University
- Xi’an
- P. R. China
| | - Xiaoxia Wang
- School of Environment and Civil Engineering
- Dongguan University of Technology
- Dongguan
- P. R. China
| | - Chen Li
- School of Environment and Civil Engineering
- Dongguan University of Technology
- Dongguan
- P. R. China
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