1
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Zuo YW, Zhao Y, Zhang YF, Guo XY, Wu TR, Jin RX, Wang XS. Visible-Light-Induced Oxidative Decarboxylative Coupling of Phenylacetic Acid Derivatives Using SF 6 as an Oxidant. Org Lett 2024; 26:5652-5656. [PMID: 38941116 DOI: 10.1021/acs.orglett.4c01609] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/29/2024]
Abstract
A visible-light-mediated decarboxylative coupling reaction of phenylacetic acid derivatives, featuring sulfur hexafluoride (SF6) as the oxidant, has been developed. This metal-free method allows for the synthesis of a series of bibenzyl derivatives and complex all-carbon skeletons, facilitating efficient utilization and degradation of the greenhouse gas SF6.
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Affiliation(s)
- Ya-Wen Zuo
- Department of Chemistry, University of Science and Technology of China, 96 Jinzhai Road, Hefei, Anhui 230026, China
| | - Yue Zhao
- State Grid Anhui Electric Power Research Institute, Hefei, Anhui 230601, China
| | - Yi-Fan Zhang
- Institution of Advanced Technology, University of Science and Technology of China, 5089 Wangjiang Road, Hefei, Anhui 230031, China
| | - Xiao-Yu Guo
- Institution of Advanced Technology, University of Science and Technology of China, 5089 Wangjiang Road, Hefei, Anhui 230031, China
| | - Tian-Rui Wu
- Institution of Advanced Technology, University of Science and Technology of China, 5089 Wangjiang Road, Hefei, Anhui 230031, China
| | - Ruo-Xing Jin
- Department of Chemistry, University of Science and Technology of China, 96 Jinzhai Road, Hefei, Anhui 230026, China
- Institution of Advanced Technology, University of Science and Technology of China, 5089 Wangjiang Road, Hefei, Anhui 230031, China
| | - Xi-Sheng Wang
- Department of Chemistry, University of Science and Technology of China, 96 Jinzhai Road, Hefei, Anhui 230026, China
- Institution of Advanced Technology, University of Science and Technology of China, 5089 Wangjiang Road, Hefei, Anhui 230031, China
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2
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Sonawane SC, Gourkhede R, Saini P, Ramakrishnan S, Balakrishna MS. Cu I-amidobis(phosphine) catalyzed C(sp 3)-C(sp 3) direct homo- and hetero-coupling of unactivated alkanes via C(sp 3)-H activation. Chem Commun (Camb) 2024; 60:6055-6058. [PMID: 38780035 DOI: 10.1039/d4cc01119h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/25/2024]
Abstract
Herein, we present a CuI-dimer, [CuI{Ph2PC6H4C(O)NC6H4PPh2-o}]2, which catalyzed direct C(sp3)-H homocoupling of benzyl and cycloalkane derivatives with excellent yields and regio-selectivity. The method is very simple and tolerates various functionalities. Synergistic metal-ligand cooperativity was observed in Cu-N bond cleavage and protonation of nitrogen, and facilitates a bifunctional pathway, minimising the free energy corrugation for catalytic intermediates.
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Affiliation(s)
- Sachin C Sonawane
- Phosphorus Laboratory, Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai, 400 076, India.
| | - Rani Gourkhede
- Phosphorus Laboratory, Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai, 400 076, India.
| | - Prateek Saini
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai, 400 076, India.
| | - Srinivasan Ramakrishnan
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai, 400 076, India.
| | - Maravanji S Balakrishna
- Phosphorus Laboratory, Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai, 400 076, India.
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3
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So YM, To CT, Guru MM, Shima T, Hou Z. Hydrodeoxygenative Coupling and Transformation of Aldehydes at a N 2-Derived Tetranuclear Titanium Imide/Hydride Framework. J Am Chem Soc 2023. [PMID: 37480557 DOI: 10.1021/jacs.3c05525] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/24/2023]
Abstract
Carbon-carbon bond formation via coupling of two organic components is among the most important chemical transformations in organic synthesis. Herein, we report an unprecedented hydrodeoxygenative coupling of aromatic aldehydes to form bibenzyls by a N2-derived tetranuclear titanium imide/hydride complex [(Cp'Ti)4(μ3-NH)2(μ-H)4] (1; Cp' = C5Me4SiMe3). Further reactions with the corresponding aldehydes under air afford hydrobenzamides together with a titanium oxo complex. Both hydride and imide ligands play an important role for the reductive coupling, hydrogenation processes, as well as the functionalization of the N2-derived imide units without the need of sacrificial reagents. These results demonstrate that the tetranuclear titanium imide/hydride framework is not only applicable for N2 activation and functionalization but also providing a new platform for the C-C bond formation using carbonyl compounds.
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Affiliation(s)
- Yat-Ming So
- Advanced Catalysis Research Group, RIKEN Center for Sustainable Resource Science, Wako 351-0198, Japan
| | - Ching Tat To
- Advanced Catalysis Research Group, RIKEN Center for Sustainable Resource Science, Wako 351-0198, Japan
| | - Murali Mohan Guru
- Advanced Catalysis Research Group, RIKEN Center for Sustainable Resource Science, Wako 351-0198, Japan
| | - Takanori Shima
- Advanced Catalysis Research Group, RIKEN Center for Sustainable Resource Science, Wako 351-0198, Japan
- Organometallic Chemistry Laboratory, RIKEN Cluster for Pioneering Research, Wako 351-0198, Japan
| | - Zhaomin Hou
- Advanced Catalysis Research Group, RIKEN Center for Sustainable Resource Science, Wako 351-0198, Japan
- Organometallic Chemistry Laboratory, RIKEN Cluster for Pioneering Research, Wako 351-0198, Japan
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4
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Seong CM, Ansel AQ, Roberts CC. Redox Inversion: A Radical Analogue of Umpolung Reactivity for Base- and Metal-Free Catalytic C(sp 3)-C(sp 3) Coupling. J Org Chem 2023; 88:3935-3940. [PMID: 36877204 DOI: 10.1021/acs.joc.2c02877] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/07/2023]
Abstract
The construction of alkyl-alkyl bonds is a powerful tool in organic synthesis. Redox inversion, defined as switching the donor/acceptor profile of a functional group to its acceptor/donor profile, is used for C(sp3)-C(sp3) coupling. We report a photocatalytic coupling of carboxylic acids to form bibenzyls through a radical-radical coupling. Mechanistic insight is gained through control reactions. This unexplored redox-opposite relationship between a carboxylic acid and its redox-active ester is implemented in catalysis.
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Affiliation(s)
- Chris M Seong
- Department of Chemistry, University of Minnesota, Minneapolis, Minnesota 55455, United States
| | - Annabel Q Ansel
- Department of Chemistry, University of Minnesota, Minneapolis, Minnesota 55455, United States
| | - Courtney C Roberts
- Department of Chemistry, University of Minnesota, Minneapolis, Minnesota 55455, United States
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5
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Dubois MAJ, Rojas JJ, Sterling AJ, Broderick HC, Smith MA, White AJP, Miller PW, Choi C, Mousseau JJ, Duarte F, Bull JA. Visible Light Photoredox-Catalyzed Decarboxylative Alkylation of 3-Aryl-Oxetanes and Azetidines via Benzylic Tertiary Radicals and Implications of Benzylic Radical Stability. J Org Chem 2023; 88:6476-6488. [PMID: 36868184 DOI: 10.1021/acs.joc.3c00083] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/05/2023]
Abstract
Four-membered heterocycles offer exciting potential as small polar motifs in medicinal chemistry but require further methods for incorporation. Photoredox catalysis is a powerful method for the mild generation of alkyl radicals for C-C bond formation. The effect of ring strain on radical reactivity is not well understood, with no studies that address this question systematically. Examples of reactions that involve benzylic radicals are rare, and their reactivity is challenging to harness. This work develops a radical functionalization of benzylic oxetanes and azetidines using visible light photoredox catalysis to prepare 3-aryl-3-alkyl substituted derivatives and assesses the influence of ring strain and heterosubstitution on the reactivity of small-ring radicals. 3-Aryl-3-carboxylic acid oxetanes and azetidines are suitable precursors to tertiary benzylic oxetane/azetidine radicals which undergo conjugate addition into activated alkenes. We compare the reactivity of oxetane radicals to other benzylic systems. Computational studies indicate that Giese additions of unstrained benzylic radicals into acrylates are reversible and result in low yields and radical dimerization. Benzylic radicals as part of a strained ring, however, are less stable and more π-delocalized, decreasing dimer and increasing Giese product formation. Oxetanes show high product yields due to ring strain and Bent's rule rendering the Giese addition irreversible.
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Affiliation(s)
- Maryne A J Dubois
- Department of Chemistry, Imperial College London, Molecular Sciences Research Hub, White City Campus, Wood Lane, London W12 0BZ, U.K
| | - Juan J Rojas
- Department of Chemistry, Imperial College London, Molecular Sciences Research Hub, White City Campus, Wood Lane, London W12 0BZ, U.K
| | - Alistair J Sterling
- Department of Chemistry, Chemistry Research Laboratory, University of Oxford, Oxford OX1 3TA, U.K
| | - Hannah C Broderick
- Department of Chemistry, Imperial College London, Molecular Sciences Research Hub, White City Campus, Wood Lane, London W12 0BZ, U.K
| | - Milo A Smith
- Department of Chemistry, Imperial College London, Molecular Sciences Research Hub, White City Campus, Wood Lane, London W12 0BZ, U.K
| | - Andrew J P White
- Department of Chemistry, Imperial College London, Molecular Sciences Research Hub, White City Campus, Wood Lane, London W12 0BZ, U.K
| | - Philip W Miller
- Department of Chemistry, Imperial College London, Molecular Sciences Research Hub, White City Campus, Wood Lane, London W12 0BZ, U.K
| | - Chulho Choi
- Pfizer Global Research and Development, 445 Eastern Point Rd., Groton, Connecticut 06340, United States
| | - James J Mousseau
- Pfizer Global Research and Development, 445 Eastern Point Rd., Groton, Connecticut 06340, United States
| | - Fernanda Duarte
- Department of Chemistry, Chemistry Research Laboratory, University of Oxford, Oxford OX1 3TA, U.K
| | - James A Bull
- Department of Chemistry, Imperial College London, Molecular Sciences Research Hub, White City Campus, Wood Lane, London W12 0BZ, U.K
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6
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Controlling the reactions of free radicals with metal-radical interaction. CHINESE JOURNAL OF CATALYSIS 2023. [DOI: 10.1016/s1872-2067(22)64181-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
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7
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Lopat’eva ER, Krylov IB, Segida OO, Merkulova VM, Ilovaisky AI, Terent’ev AO. Heterogeneous Photocatalysis as a Potent Tool for Organic Synthesis: Cross-Dehydrogenative C-C Coupling of N-Heterocycles with Ethers Employing TiO 2/ N-Hydroxyphthalimide System under Visible Light. Molecules 2023; 28:molecules28030934. [PMID: 36770603 PMCID: PMC9920906 DOI: 10.3390/molecules28030934] [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: 12/25/2022] [Revised: 01/11/2023] [Accepted: 01/13/2023] [Indexed: 01/19/2023] Open
Abstract
Despite the obvious advantages of heterogeneous photocatalysts (availability, stability, recyclability, the ease of separation from products and safety) their application in organic synthesis faces serious challenges: generally low efficiency and selectivity compared to homogeneous photocatalytic systems. The development of strategies for improving the catalytic properties of semiconductor materials is the key to their introduction into organic synthesis. In the present work, a hybrid photocatalytic system involving both heterogeneous catalyst (TiO2) and homogeneous organocatalyst (N-hydroxyphthalimide, NHPI) was proposed for the cross-dehydrogenative C-C coupling of electron-deficient N-heterocycles with ethers employing t-BuOOH as the terminal oxidant. It should be noted that each of the catalysts is completely ineffective when used separately under visible light in this transformation. The occurrence of visible light absorption upon the interaction of NHPI with the TiO2 surface and the generation of reactive phthalimide-N-oxyl (PINO) radicals upon irradiation with visible light are considered to be the main factors determining the high catalytic efficiency. The proposed method is suitable for the coupling of π-deficient pyridine, quinoline, pyrazine, and quinoxaline heteroarenes with various non-activated ethers.
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8
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Mayer TS, Taeufer T, Brandt S, Rabeah J, Pospech J. Photomediated Hydro- and Deuterodecarboxylation of Pharmaceutically Relevant and Natural Aliphatic Carboxylic Acids. J Org Chem 2022; 88:6347-6353. [PMID: 36126247 DOI: 10.1021/acs.joc.2c01664] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Herein, we report a photomediated hydro- and deuterodecarboxylation of different primary, secondary, and tertiary carboxylic acids catalyzed by an organic pyrimidopteridine photoredox catalyst. The reaction was optimized by a statistical design of experiment (DoE). Under optimized reaction conditions, the conversion of commercially available nonsteroidal anti-inflammatory drugs (NSAIDs) in tablet form and on gram scale was realized. The scope of the application comprises primary, secondary, and tertiary aliphatic biologically active carboxylic acids. A deuterium incorporation of up to 95% by using D2O as inexpensive deuterium source was achieved. A sensitivity assessment as well as experiments aiding the elucidation of the reaction mechanism are discussed.
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Affiliation(s)
- Thea S Mayer
- Leibniz Institute for Catalysis, Albert-Einstein-Straße 29a, 18059 Rostock, Germany
| | - Tobias Taeufer
- Leibniz Institute for Catalysis, Albert-Einstein-Straße 29a, 18059 Rostock, Germany
| | - Sina Brandt
- Leibniz Institute for Catalysis, Albert-Einstein-Straße 29a, 18059 Rostock, Germany
| | - Jabor Rabeah
- Leibniz Institute for Catalysis, Albert-Einstein-Straße 29a, 18059 Rostock, Germany
| | - Jola Pospech
- Leibniz Institute for Catalysis, Albert-Einstein-Straße 29a, 18059 Rostock, Germany
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9
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Sun Y, Tan F, Hu R, Hu C, Li Y. Visible‐Light Photoredox‐Catalyzed
Hydrodecarboxylation and Deuterodecarboxylation of Fatty Acids. CHINESE J CHEM 2022. [DOI: 10.1002/cjoc.202200143] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Yuan‐Li Sun
- Center for Organic Chemistry Frontier Institute of Science and Technology, Xi'an Jiaotong University Xi'an Shaanxi 710054 P. R. China
| | - Fang‐Fang Tan
- Center for Organic Chemistry Frontier Institute of Science and Technology, Xi'an Jiaotong University Xi'an Shaanxi 710054 P. R. China
| | - Rong‐Gui Hu
- Center for Organic Chemistry Frontier Institute of Science and Technology, Xi'an Jiaotong University Xi'an Shaanxi 710054 P. R. China
| | - Chun‐Hong Hu
- Center for Organic Chemistry Frontier Institute of Science and Technology, Xi'an Jiaotong University Xi'an Shaanxi 710054 P. R. China
| | - Yang Li
- Center for Organic Chemistry Frontier Institute of Science and Technology, Xi'an Jiaotong University Xi'an Shaanxi 710054 P. R. China
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10
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Xu M, Hua Y, Fu X, Liu J. Efficient Photocatalytic Carbonyl Alkylative Amination Enabled by Titanium‐Dioxide‐Mediated Decarboxylation. Chemistry 2022; 28:e202104394. [DOI: 10.1002/chem.202104394] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2021] [Indexed: 11/11/2022]
Affiliation(s)
- Mei Xu
- College of Chemistry and Chemical Engineering Hunan Provincial Key Laboratory of Biomacromolecular Chemical Biology Hunan University 410082 Changsha P.R. China
| | - Ying Hua
- College of Chemistry and Chemical Engineering Hunan Provincial Key Laboratory of Biomacromolecular Chemical Biology Hunan University 410082 Changsha P.R. China
| | - Xin Fu
- College of Chemistry and Chemical Engineering Hunan Provincial Key Laboratory of Biomacromolecular Chemical Biology Hunan University 410082 Changsha P.R. China
| | - Jie Liu
- College of Chemistry and Chemical Engineering Hunan Provincial Key Laboratory of Biomacromolecular Chemical Biology Hunan University 410082 Changsha P.R. China
- State Key Laboratory of Chemo/Biosensing and Chemometrics Hunan University 410082 Changsha P.R. China
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11
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Radical generation and fate control for photocatalytic biomass conversion. Nat Rev Chem 2022; 6:197-214. [PMID: 37117437 DOI: 10.1038/s41570-022-00359-9] [Citation(s) in RCA: 34] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 01/12/2022] [Indexed: 12/30/2022]
Abstract
Photocatalysis is an emerging approach for sustainable chemical production from renewable biomass under mild conditions. Active radicals are always generated as key intermediates, in which their high reactivity renders them versatile for various upgrading processes. However, controlling their reaction is a challenge, especially in highly functionalized biomass frameworks. In this Review, we summarize recent advanced photocatalytic systems for selective biomass valorization, with an emphasis on their distinct radical-mediated reaction patterns. The strategies for generating a specific radical intermediate and controlling its subsequent conversion towards desired chemicals are also highlighted, aiming to provide guidance for future studies. We believe that taking full advantage of the unique reactivity of radical intermediates would provide great opportunities to develop more efficient photocatalytic systems for biomass valorization.
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12
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Abstract
The quest to find milder and more sustainable methods to generate highly reactive, carbon-centred intermediates has led to a resurgence of interest in radical chemistry. In particular, carboxylic acids are seen as attractive radical precursors due their availability, low cost, diversity, and sustainability. Moreover, the corresponding nucleophilic carbon-radical can be easily accessed through a favourable radical decarboxylation process, extruding CO2 as a traceless by-product. This review summarizes the recent progress on using carboxylic acids directly as convenient radical precursors for the formation of carbon-carbon bonds via the 1,4-radical conjugate addition (Giese) reaction.
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Affiliation(s)
- David M Kitcatt
- Institute of Chemical Sciences, School of Engineering and Physical Sciences, Heriot-Watt University, Edinburgh, EH14 4AS, UK.
| | - Simon Nicolle
- GlaxoSmithKline, Gunnels Wood Rd, Stevenage SG1 2NY, UK
| | - Ai-Lan Lee
- Institute of Chemical Sciences, School of Engineering and Physical Sciences, Heriot-Watt University, Edinburgh, EH14 4AS, UK.
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13
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Du X, Peng Y, Albero J, Li D, Hu C, García H. Synthetic Fuels from Biomass: Photocatalytic Hydrodecarboxylation of Octanoic Acid by Ni Nanoparticles Deposited on TiO 2. CHEMSUSCHEM 2022; 15:e202102107. [PMID: 34841693 DOI: 10.1002/cssc.202102107] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/03/2021] [Revised: 11/20/2021] [Indexed: 06/13/2023]
Abstract
Decarboxylation of low-value fatty acids from biomass is a simple process to produce synthetic fuels suitable to be blended with gasoline or diesel. The present study reports the photocatalytic decarboxylation of octanoic acid in the presence of H2 by a series of modified TiO2 to form mixtures of n-heptane and tetradecane as major products in variable proportions, depending on the photocatalyst and the reaction conditions. It was found that the photocatalytic activity increases upon an optimal reductive NaBH4 treatment, presumably by generation of surface oxygen vacancies and by the deposition of Ni nanoparticles in the appropriate loading. Under the optimized conditions, an almost complete octanoic acid conversion and a combined selectivity to n-heptane and tetradecane over 80 % were reached at 10 h of UV/Vis light irradiation with a 300 W Xe lamp. No changes in the photocatalytic performance were observed for six consecutive runs. The present results illustrate the possibility that photocatalytic decarboxylation offers for the transformation of biomass into synthetic fuels under mild conditions.
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Affiliation(s)
- Xiangze Du
- Key Laboratory of Green Chemistry and Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu, 610064, P. R. China
- Instituto Universitario de Tecnología Química, Consejo Superior de Investigaciones Científicas, Universitat Politecnica de Valencia, Av. De los Naranjos s/n, 46022, Valencia, Spain
| | - Yong Peng
- Instituto Universitario de Tecnología Química, Consejo Superior de Investigaciones Científicas, Universitat Politecnica de Valencia, Av. De los Naranjos s/n, 46022, Valencia, Spain
| | - Josep Albero
- Instituto Universitario de Tecnología Química, Consejo Superior de Investigaciones Científicas, Universitat Politecnica de Valencia, Av. De los Naranjos s/n, 46022, Valencia, Spain
| | - Dan Li
- Key Laboratory of Green Chemistry and Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu, 610064, P. R. China
| | - Changwei Hu
- Key Laboratory of Green Chemistry and Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu, 610064, P. R. China
| | - Hermenegildo García
- Instituto Universitario de Tecnología Química, Consejo Superior de Investigaciones Científicas, Universitat Politecnica de Valencia, Av. De los Naranjos s/n, 46022, Valencia, Spain
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14
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Kuwana D, Komori Y, Nagatomo M, Inoue M. Photoinduced Decarboxylative Radical Coupling Reaction of Multiply Oxygenated Structures by Catalysis of Pt-Doped TiO 2. J Org Chem 2021; 87:730-736. [PMID: 34936365 DOI: 10.1021/acs.joc.1c02736] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A new reaction system was devised for decarboxylative radical coupling reactions by heterogeneous semiconductor photoredox catalysis. When an α-alkoxy carboxylic acid and Pt-doped TiO2 in EtOAc were irradiated with a violet light-emitting diode at room temperature, the photogenerated electron hole of TiO2 oxidatively induced the ejection of CO2 via the formation of a carboxyl radical to produce the corresponding α-alkoxy radical. C(sp3)-C(sp3) bond formation between the radicals led to dimers with reductive conversion of protons to H2 by the photogenerated electron. Alternatively, in the presence of an electron-deficient olefin, an intermolecular radical addition reaction occurred, resulting in the formation of a 1,4-adduct via single-electron reduction and subsequent protonation. These operationally simple and mild transformations are amenable to the one-step assembly of densely oxygenated linear and branched carbon chains.
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Affiliation(s)
- Daiki Kuwana
- Graduate School of Pharmaceutical Sciences, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - Yuma Komori
- Graduate School of Pharmaceutical Sciences, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - Masanori Nagatomo
- Graduate School of Pharmaceutical Sciences, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - Masayuki Inoue
- Graduate School of Pharmaceutical Sciences, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
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15
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Xing W, Wang J, Fu M, Fu Y. Efficient Decarboxylative/Defluorinative Alkylation for the Synthesis of
gem
‐Difluoroalkenes
through an
S
N
2
’‐Type Route. CHINESE J CHEM 2021. [DOI: 10.1002/cjoc.202100709] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Wei‐Long Xing
- Hefei National Laboratory for Physical Sciences at the Microscale, CAS Key Laboratory of Urban Pollutant Conversion, Anhui Province Key Laboratory of Biomass Clean Energy, iChEM, University of Science and Technology of China Hefei Anhui 230026 China
| | - Jia‐Xin Wang
- Hefei National Laboratory for Physical Sciences at the Microscale, CAS Key Laboratory of Urban Pollutant Conversion, Anhui Province Key Laboratory of Biomass Clean Energy, iChEM, University of Science and Technology of China Hefei Anhui 230026 China
| | - Ming‐Chen Fu
- Hefei National Laboratory for Physical Sciences at the Microscale, CAS Key Laboratory of Urban Pollutant Conversion, Anhui Province Key Laboratory of Biomass Clean Energy, iChEM, University of Science and Technology of China Hefei Anhui 230026 China
| | - Yao Fu
- Hefei National Laboratory for Physical Sciences at the Microscale, CAS Key Laboratory of Urban Pollutant Conversion, Anhui Province Key Laboratory of Biomass Clean Energy, iChEM, University of Science and Technology of China Hefei Anhui 230026 China
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16
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Sansano JM, de Gracia Retamosa M, Döndaş HA, Sobhani S, Nájera C, Yus MA. Photocatalytic Homocoupling Transformations. SYNTHESIS-STUTTGART 2021. [DOI: 10.1055/a-1517-7329] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Abstract
AbstractHomocoupling reactions promoted by photocatalysts are not very abundant in the literature. However, the products generated from such processes are very interesting. In this review, we highlight the most relevant reports concerning photocatalyzed dimerizations covering the literature until the middle of 2020. Reactions will be classified according to the type of starting material employed, with an emphasis being placed on the corresponding mechanism. 1 Introduction2 Arenes and Heteroarenes3 Alkenes4 Alkanes5 Alkynes6 Aldehydes, Ketones, Alcohols, Amines and Imines7 Carboxylic Acids8 Nitro Compounds9 Conclusions
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Affiliation(s)
- José M. Sansano
- Departamento de Química Orgánica e Instituto de Síntesis Orgánica, Universidad de Alicante
- Centro de Innovación en Química Avanzada (ORFEO-CINQA)
| | - María de Gracia Retamosa
- Departamento de Química Orgánica e Instituto de Síntesis Orgánica, Universidad de Alicante
- Centro de Innovación en Química Avanzada (ORFEO-CINQA)
| | - Haci Ali Döndaş
- Department of Basic Pharmaceutical Sciences, Faculty of Pharmacy, Çukurova University
| | - Sara Sobhani
- Department of Chemistry, College of Sciences, University of Birjand
| | - Carmen Nájera
- Centro de Innovación en Química Avanzada (ORFEO-CINQA)
| | - Miguel A. Yus
- Centro de Innovación en Química Avanzada (ORFEO-CINQA)
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17
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Shu XZ, Pan FF, Guo P, Huang X. Synthesis of Dibenzyls by Nickel-Catalyzed Homocoupling of Benzyl Alcohols. SYNTHESIS-STUTTGART 2021. [DOI: 10.1055/a-1467-2432] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Abstract
AbstractDibenzyls are essential building blocks that are widely used in organic synthesis, and they are typically prepared by the homocoupling of halides, organometallics, and ethers. Herein, we report an approach to this class of compounds using alcohols, which are more stable and readily available. The reaction proceeds via nickel-catalyzed and dimethyl oxalate assisted dynamic kinetic homocoupling of benzyl alcohols. Both primary and secondary alcohols are tolerated.
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Affiliation(s)
- Xing-Zhong Shu
- State Key Laboratory of Applied Organic Chemistry (SKLAOC), College of Chemistry and Chemical Engineering, Lanzhou University
| | - Feng-Feng Pan
- State Key Laboratory of Applied Organic Chemistry (SKLAOC), College of Chemistry and Chemical Engineering, Lanzhou University
- College of Chemical Engineering and Technology, Tianshui Normal University
| | - Peng Guo
- State Key Laboratory of Applied Organic Chemistry (SKLAOC), College of Chemistry and Chemical Engineering, Lanzhou University
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18
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C(sp 3)-C(sp 3) bond formation via nickel-catalyzed deoxygenative homo-coupling of aldehydes/ketones mediated by hydrazine. Nat Commun 2021; 12:3729. [PMID: 34140496 PMCID: PMC8211713 DOI: 10.1038/s41467-021-23971-7] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2021] [Accepted: 05/25/2021] [Indexed: 11/16/2022] Open
Abstract
Aldehydes and ketones are widely found in biomass resources and play important roles in organic synthesis. However, the direct deoxygenative coupling of aldehydes or ketones to construct C(sp3)−C(sp3) bond remains a scientific challenge. Here we report a nickel−catalyzed reductive homo-coupling of moisture- and air-stable hydrazones generated in-situ from naturally abundant aldehydes and ketones to construct challenging C(sp3)−C(sp3) bond. This transformation has great functional group compatibility and can suit a broad substrate scope with innocuous H2O, N2 and H2 as the by-products. Furthermore, the application in several biological molecules and the transformation of PEEK model demonstrate the generality, practicability, and applicability of this novel methodology. The direct deoxygenative coupling of aldehydes or ketones to construct C(sp3)−C(sp3) bond remains a scientific challenge. Here the authors use a nickel−catalyzed reductive homo-coupling of moisture- and air-stable hydrazones generated in-situ from naturally abundant aldehydes and ketones to construct challenging C(sp3)−C(sp3) bonds.
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19
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Okada Y. Synthetic Semiconductor Photoelectrochemistry. CHEM REC 2021; 21:2223-2238. [PMID: 33769685 DOI: 10.1002/tcr.202100029] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2021] [Revised: 03/10/2021] [Indexed: 01/06/2023]
Abstract
In the field of synthetic organic chemistry, photochemical and electrochemical approaches are often considered to be competing technologies that induce single electron transfer (SET). Recently, their fusion, i. e., the "photoelectrochemical" approach, has become the focus of attention. In this approach, both solar and electrical energy are used in creative combinations. Historically, the term "photoelectrochemistry" has been used in more inorganic fields, where a photovoltaic effect exhibited by semiconducting materials is employed. Semiconductors have also been studied intensively as photocatalysts; however, they recently have taken a back seat to molecular photocatalysts. In this account, we would like to revisit semiconductor photocatalysts in the field of synthetic organic chemistry to demonstrate that semiconductor "photoelectrochemical" approaches are more than mere alternatives to molecular photochemical and/or electrochemical approaches.
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Affiliation(s)
- Yohei Okada
- Department of Chemical Engineering, Tokyo University of Agriculture and Technology, 2-24-16 Naka-cho, Koganei, Tokyo, 184-8588, Japan
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20
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Hoseini Chopani SM, Asadi S, Heravi MM. Application of Bimetallic and Trimetallic Nanoparticles Supported on Graphene as novel Heterogeneous Catalysts in the Reduction of Nitroarenes, Homo-coupling, Suzuki-Miyaura and Sonogashira Reactions. CURR ORG CHEM 2020. [DOI: 10.2174/1385272824999200914111559] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
In the last decade, the use of heterogeneous catalysts based on Metal Nanoparticles
(MNPs) has attracted increasing attention due to their prominence as nanocatalysts in
several key chemical transformations. Notably, it is well identified that supporting Metal
Nanoparticles (MNPs) with suitable solid surfaces can protect the MNPs from leaching,
deactivation, and also increasing its ease of separation and possible reusability. Graphene
oxide (GO) as a conductive surface could have non-covalent bonding interactions like hydrogen
bonding, electrostatic and π –π* stacking interactions with substrate leading to
activation of the substrate. Remarkably, it is recognized that bimetallic nanoparticles supported
on graphene oxide often show novel properties that are not present on either of the
parent metal or surfaces. In this review, we tried to reveal the potential advantages of
bimetallic and trimetallic nanoparticles supported on graphene oxide in organic transformations, including the
reduction of nitroarenes, Suzuki-Miyaura and Sonogashira coupling reactions.
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Affiliation(s)
| | - Shima Asadi
- Faculty of Chemistry and Physics, Department of Chemistry, Alzahra University, Vanak, Tehran, Iran
| | - Majid M. Heravi
- Faculty of Chemistry and Physics, Department of Chemistry, Alzahra University, Vanak, Tehran, Iran
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21
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Masuda Y, Ito M, Murakami M. Degradation of Unprotected Aldohexonic Acids to Aldopentoses Promoted by Light and Oxygen. CHEM LETT 2020. [DOI: 10.1246/cl.200517] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Yusuke Masuda
- Department of Synthetic Chemistry and Biological Chemistry, Kyoto University, Katsura, Kyoto 615-8510, Japan
| | - Misato Ito
- Department of Synthetic Chemistry and Biological Chemistry, Kyoto University, Katsura, Kyoto 615-8510, Japan
| | - Masahiro Murakami
- Department of Synthetic Chemistry and Biological Chemistry, Kyoto University, Katsura, Kyoto 615-8510, Japan
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22
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Kodama T, Kubo M, Shinji W, Ohkubo K, Tobisu M. Phenylene-bridged bis(benzimidazolium) (BBIm 2+): a dicationic organic photoredox catalyst. Chem Sci 2020; 11:12109-12117. [PMID: 34094425 PMCID: PMC8162872 DOI: 10.1039/d0sc03958f] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2020] [Accepted: 10/07/2020] [Indexed: 12/30/2022] Open
Abstract
A dicationic photoredox catalyst composed of phenylene-bridged bis(benzimidazolium) (BBIm2+) was designed, synthesised and demonstrated to promote the photochemical decarboxylative hydroxylation and dimerisation of carboxylic acids. The catalytic activity of BBIm2+ was higher than that for a monocation analogue, suggesting that the dicationic nature of BBIm2+ plays a key role in these decarboxylative reactions. The rate constant for the decay of the triplet-triplet absorption of the excited BBIm2+ increased with increasing concentration of the carboxylate anion with a saturated dependence, suggesting that photoinduced electron transfer occurs within the ion pair complex composed of the triplet excited state of BBIm2+ and a carboxylate anion.
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Affiliation(s)
- Takuya Kodama
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University Suita Osaka 565-0871 Japan
| | - Maiko Kubo
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University Suita Osaka 565-0871 Japan
| | - Wataru Shinji
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University Suita Osaka 565-0871 Japan
| | - Kei Ohkubo
- Institute for Advanced Co-Creation Studies, Osaka University Suita Osaka 565-0871 Japan
- Institute for Open and Transdisciplinary Research Initiatives, Osaka University Suita Osaka 565-0871 Japan
| | - Mamoru Tobisu
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University Suita Osaka 565-0871 Japan
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23
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Baghery S, Zarei M, Zolfigol MA, Mallakpour S, Behranvand V. Application of trityl moieties in chemical processes: part I. JOURNAL OF THE IRANIAN CHEMICAL SOCIETY 2020. [DOI: 10.1007/s13738-020-01980-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
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24
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Zhou C, Zhang T. Photocatalytic alkane production from fatty acid decarboxylation over hydrogenated catalyst. Sci Bull (Beijing) 2020; 65:870-871. [PMID: 36747417 DOI: 10.1016/j.scib.2020.03.017] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Affiliation(s)
- Chao Zhou
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, China
| | - Tierui Zhang
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, China; Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing 100049, China.
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25
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Enhanced photocatalytic alkane production from fatty acid decarboxylation via inhibition of radical oligomerization. Nat Catal 2020. [DOI: 10.1038/s41929-020-0423-3] [Citation(s) in RCA: 55] [Impact Index Per Article: 13.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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26
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Moon PJ, Lundgren RJ. Metal-Catalyzed Ionic Decarboxylative Cross-Coupling Reactions of C(sp3) Acids: Reaction Development, Mechanisms, and Application. ACS Catal 2019. [DOI: 10.1021/acscatal.9b04956] [Citation(s) in RCA: 46] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Patrick J. Moon
- Department of Chemistry, University of Alberta, Edmonton, Alberta T6G 2G2, Canada
| | - Rylan J. Lundgren
- Department of Chemistry, University of Alberta, Edmonton, Alberta T6G 2G2, Canada
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27
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Kong D, Moon PJ, Bsharat O, Lundgren RJ. Direct Catalytic Decarboxylative Amination of Aryl Acetic Acids. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201912518] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Duanyang Kong
- Department of Chemistry University of Alberta Edmonton Alberta T6G 2G2 Canada
| | - Patrick J. Moon
- Department of Chemistry University of Alberta Edmonton Alberta T6G 2G2 Canada
| | - Odey Bsharat
- Department of Chemistry University of Alberta Edmonton Alberta T6G 2G2 Canada
| | - Rylan J. Lundgren
- Department of Chemistry University of Alberta Edmonton Alberta T6G 2G2 Canada
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28
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Kong D, Moon PJ, Bsharat O, Lundgren RJ. Direct Catalytic Decarboxylative Amination of Aryl Acetic Acids. Angew Chem Int Ed Engl 2019; 59:1313-1319. [DOI: 10.1002/anie.201912518] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2019] [Revised: 10/23/2019] [Indexed: 11/08/2022]
Affiliation(s)
- Duanyang Kong
- Department of Chemistry University of Alberta Edmonton Alberta T6G 2G2 Canada
| | - Patrick J. Moon
- Department of Chemistry University of Alberta Edmonton Alberta T6G 2G2 Canada
| | - Odey Bsharat
- Department of Chemistry University of Alberta Edmonton Alberta T6G 2G2 Canada
| | - Rylan J. Lundgren
- Department of Chemistry University of Alberta Edmonton Alberta T6G 2G2 Canada
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29
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Affiliation(s)
- Chenxi Yang
- Department of ChemistryLishui University No. 1, Xueyuan Road Lishui City 323000 Zhejiang Province P. R. China
| | - Xia Sheng
- Department of ChemistryLishui University No. 1, Xueyuan Road Lishui City 323000 Zhejiang Province P. R. China
| | - Ling Zhang
- Department of ChemistryLishui University No. 1, Xueyuan Road Lishui City 323000 Zhejiang Province P. R. China
| | - Jiang Yu
- Department of ChemistryLishui University No. 1, Xueyuan Road Lishui City 323000 Zhejiang Province P. R. China
| | - Dayun Huang
- Department of ChemistryLishui University No. 1, Xueyuan Road Lishui City 323000 Zhejiang Province P. R. China
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30
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Nakayama K, Maeta N, Horiguchi G, Kamiya H, Okada Y. Radical Cation Diels-Alder Reactions by TiO 2 Photocatalysis. Org Lett 2019; 21:2246-2250. [PMID: 30916982 DOI: 10.1021/acs.orglett.9b00526] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Radical cation Diels-Alder reactions by titanium dioxide (TiO2) photocatalysis in lithium perchlorate/nitromethane solution are described. TiO2 photocatalysis promotes reactions between electron-rich dienes and dienophiles, which would otherwise be difficult to accomplish due to electronic mismatching. The reactions are triggered by hole oxidation of the dienophile and are completed by the excited electron reduction of the radical cation intermediate at the dispersed surface in the absence of any sacrificial substrate.
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Affiliation(s)
- Kaii Nakayama
- Department of Chemical Engineering , Tokyo University of Agriculture and Technology , 2-24-16 Naka-cho , Koganei, Tokyo 184-8588 , Japan
| | - Naoya Maeta
- Department of Chemical Engineering , Tokyo University of Agriculture and Technology , 2-24-16 Naka-cho , Koganei, Tokyo 184-8588 , Japan
| | - Genki Horiguchi
- Department of Chemical Engineering , Tokyo University of Agriculture and Technology , 2-24-16 Naka-cho , Koganei, Tokyo 184-8588 , Japan
| | - Hidehiro Kamiya
- Department of Chemical Engineering , Tokyo University of Agriculture and Technology , 2-24-16 Naka-cho , Koganei, Tokyo 184-8588 , Japan
| | - Yohei Okada
- Department of Chemical Engineering , Tokyo University of Agriculture and Technology , 2-24-16 Naka-cho , Koganei, Tokyo 184-8588 , Japan
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31
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Diccianni JB, Katigbak J, Hu C, Diao T. Mechanistic Characterization of (Xantphos)Ni(I)-Mediated Alkyl Bromide Activation: Oxidative Addition, Electron Transfer, or Halogen-Atom Abstraction. J Am Chem Soc 2019; 141:1788-1796. [DOI: 10.1021/jacs.8b13499] [Citation(s) in RCA: 87] [Impact Index Per Article: 17.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Affiliation(s)
- Justin B. Diccianni
- Department of Chemistry, New York University, 100 Washington Square East, New York, New York 10003, United States
| | - Joseph Katigbak
- Department of Chemistry, New York University, 100 Washington Square East, New York, New York 10003, United States
| | - Chunhua Hu
- Department of Chemistry, New York University, 100 Washington Square East, New York, New York 10003, United States
| | - Tianning Diao
- Department of Chemistry, New York University, 100 Washington Square East, New York, New York 10003, United States
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32
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Köckritz A, Eckelt R, Koch O, Esser P, Panten J, Baumann W, Atia H. Alkylation of Cyclododecanone with Allyl Acetate in the Presence of Solid Radical Initiators. Eur J Inorg Chem 2018. [DOI: 10.1002/ejic.201800145] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Angela Köckritz
- Heterogeneous Catalytic Processes Leibniz Institute for Catalysis Albert‐Einstein‐Str. 29a 18059 Rostock Germany
| | - Reinhard Eckelt
- Heterogeneous Catalytic Processes Leibniz Institute for Catalysis Albert‐Einstein‐Str. 29a 18059 Rostock Germany
| | - Oskar Koch
- Symrise AG Mühlenfeldstr. 1 Holzminden Germany
| | - Peter Esser
- Symrise AG Mühlenfeldstr. 1 Holzminden Germany
| | | | - Wolfgang Baumann
- Heterogeneous Catalytic Processes Leibniz Institute for Catalysis Albert‐Einstein‐Str. 29a 18059 Rostock Germany
| | - Hanan Atia
- Heterogeneous Catalytic Processes Leibniz Institute for Catalysis Albert‐Einstein‐Str. 29a 18059 Rostock Germany
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33
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34
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Silver-Catalyzed Decarboxylative Couplings of Acids and Anhydrides: An Entry to 1,2-Diketones and Aryl-Substituted Ethanes. Adv Synth Catal 2018. [DOI: 10.1002/adsc.201701567] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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35
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Wang ZJ, Lv JJ, Yi RN, Xiao M, Feng JJ, Liang ZW, Wang AJ, Xu X. Nondirecting Group sp
3
C−H Activation for Synthesis of Bibenzyls via
Homo-coupling as Catalyzed by Reduced Graphene Oxide Supported PtPd@Pt Porous Nanospheres. Adv Synth Catal 2018. [DOI: 10.1002/adsc.201701389] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Zheng-Jun Wang
- State Key Laboratory of Chemo/Biosensing and Chemometrics; College of Chemistry and Chemical Engineering; Hunan University; Changsha 410000 People's Republic of China
| | - Jing-Jing Lv
- College of Geography and Environmental Science; College of Chemistry and Life Science; Zhejiang Normal University; Jinhua 321004 People's Republic of China
| | - Rong-Nan Yi
- State Key Laboratory of Chemo/Biosensing and Chemometrics; College of Chemistry and Chemical Engineering; Hunan University; Changsha 410000 People's Republic of China
| | - Min Xiao
- State Key Laboratory of Chemo/Biosensing and Chemometrics; College of Chemistry and Chemical Engineering; Hunan University; Changsha 410000 People's Republic of China
| | - Jiu-Ju Feng
- College of Geography and Environmental Science; College of Chemistry and Life Science; Zhejiang Normal University; Jinhua 321004 People's Republic of China
| | - Zhi-Wu Liang
- State Key Laboratory of Chemo/Biosensing and Chemometrics; College of Chemistry and Chemical Engineering; Hunan University; Changsha 410000 People's Republic of China
| | - Ai-Jun Wang
- College of Geography and Environmental Science; College of Chemistry and Life Science; Zhejiang Normal University; Jinhua 321004 People's Republic of China
| | - Xinhua Xu
- State Key Laboratory of Chemo/Biosensing and Chemometrics; College of Chemistry and Chemical Engineering; Hunan University; Changsha 410000 People's Republic of China
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36
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Abstract
Synergistic utilization of TiO2-photo-generated holes and electrons is a potential protocol for catalytic C–C bond formation reactions.
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Affiliation(s)
- Dongge Ma
- School of Science
- Beijing Technology and Business University
- Beijing
- P. R. China
| | - Anan Liu
- Key Laboratory of Photochemistry
- Beijing National Laboratory for Molecular Sciences
- Institute of Chemistry, Chinese Academy of Sciences
- Beijing
- P. R. China
| | - Shuhong Li
- School of Science
- Beijing Technology and Business University
- Beijing
- P. R. China
| | - Chichong Lu
- School of Science
- Beijing Technology and Business University
- Beijing
- P. R. China
| | - Chuncheng Chen
- Key Laboratory of Photochemistry
- Beijing National Laboratory for Molecular Sciences
- Institute of Chemistry, Chinese Academy of Sciences
- Beijing
- P. R. China
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37
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Ma D, Liu A, Lu C, Chen C. Photocatalytic Dehydrogenation of Primary Alcohols: Selectivity Goes against Adsorptivity. ACS OMEGA 2017; 2:4161-4172. [PMID: 31457713 PMCID: PMC6641877 DOI: 10.1021/acsomega.7b00754] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/08/2017] [Accepted: 07/19/2017] [Indexed: 05/17/2023]
Abstract
Solid/liquid heterogeneous photocatalysis was often considered to occur on the active sites of a solid catalyst surface. Herein, we report that the selectivity of photocatalytic dehydrogenative oxidations of aliphatic primary alcohols in acetonitrile solution into corresponding aldehydes exhibits an anomalous relationship with adsorption behavior of the alcohols. By using Pt-loaded TiO2 photocatalyst in an inert atmosphere under UV light illumination, primary short-chain alcohols (SCAs) with strong adsorption were dehydrogenated into aldehydes in very poor selectivity, whereas weak-adsorbable long-chain alcohols (LCAs) were transformed into corresponding aldehydes with much higher selectivity. More than 20 examples of primary LCAs (C4-C10) were successfully transformed into their corresponding aldehydes with satisfactory selectivity and yield. Both solid-state magic-angle-spinning 13C NMR and attenuated total reflectance-Fourier transform infrared spectroscopy studies provided concrete differences in adsorption behaviors on the Pt-TiO2 photocatalyst surface between SCA ethanol and LCA n-octanol. To further uncover the mechanism for different selectivities of SCAs and LCAs in photodehydrogenation, in situ electron paramagnetic resonance (EPR) experiments (at 8 K temperature) were employed to observe the oxidation features of photogenerated hole in the valance band of Pt-TiO2 (hvb +). The EPR experimental studies exhibited that unlike ethanol, either n-octanol or solvent acetonitrile alone all could not scavenge photogenerated hvb + on Pt-P25 photocatalyst and only n-octanol dissolved in acetonitrile solvent could smoothly react with photoinduced hole. This indicated that selective oxidations of LCAs were achieved by solvent-delivered oxidation rather than directly destructive oxidation of photogenerated hvb +. Our results may open an alternative way in selective dehydrogenative oxidation of various substrates sensitive to both dioxygen and high-temperature treatments.
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Affiliation(s)
- Dongge Ma
- School
of Science, Beijing Technology and Business
University, 100048 Beijing, P. R. China
- Key
Laboratory of Photochemistry, Beijing National Laboratory for Molecular
Sciences, Institute of Chemistry, Chinese
Academy of Sciences, 100190 Beijing, P. R. China
- University
of Chinese Academy of Sciences, Beijing 100049, P. R.
China
- E-mail: . Phone: +86-10-68985573 (D.M.)
| | - Anan Liu
- Key
Laboratory of Photochemistry, Beijing National Laboratory for Molecular
Sciences, Institute of Chemistry, Chinese
Academy of Sciences, 100190 Beijing, P. R. China
- University
of Chinese Academy of Sciences, Beijing 100049, P. R.
China
| | - Chichong Lu
- School
of Science, Beijing Technology and Business
University, 100048 Beijing, P. R. China
| | - Chuncheng Chen
- Key
Laboratory of Photochemistry, Beijing National Laboratory for Molecular
Sciences, Institute of Chemistry, Chinese
Academy of Sciences, 100190 Beijing, P. R. China
- University
of Chinese Academy of Sciences, Beijing 100049, P. R.
China
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38
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Zou X, Zou J, Yang L, Li G, Lu H. Thermal Rearrangement of Sulfamoyl Azides: Reactivity and Mechanistic Study. J Org Chem 2017; 82:4677-4688. [PMID: 28414236 DOI: 10.1021/acs.joc.7b00308] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
The rearrangement of sulfamoyl azides under thermal conditions to form a C-C bond while breaking two C-N bonds is reported. Mechanistic study shows that this reaction goes through a Curtius-type rearrangement to form a 1,1-diazene, then which rearranges possibly through both a concerted rearrangement process and a stepwise radical process. This rearrangement could be used in the synthesis of complex biologically active molecules, such as sterols, and piperine derivatives.
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Affiliation(s)
- Xiaodong Zou
- Institute of Chemistry and BioMedical Sciences, Jiangsu Key Laboratory of Advanced Organic Materials, School of Chemistry and Chemical Engineering, Nanjing University , Nanjing 210093, China
| | - Jiaqi Zou
- Institute of Chemistry and BioMedical Sciences, Jiangsu Key Laboratory of Advanced Organic Materials, School of Chemistry and Chemical Engineering, Nanjing University , Nanjing 210093, China
| | - Lizheng Yang
- Institute of Chemistry and BioMedical Sciences, Jiangsu Key Laboratory of Advanced Organic Materials, School of Chemistry and Chemical Engineering, Nanjing University , Nanjing 210093, China
| | - Guigen Li
- Institute of Chemistry and BioMedical Sciences, Jiangsu Key Laboratory of Advanced Organic Materials, School of Chemistry and Chemical Engineering, Nanjing University , Nanjing 210093, China
| | - Hongjian Lu
- Institute of Chemistry and BioMedical Sciences, Jiangsu Key Laboratory of Advanced Organic Materials, School of Chemistry and Chemical Engineering, Nanjing University , Nanjing 210093, China
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39
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McTiernan CD, Leblanc X, Scaiano JC. Heterogeneous Titania-Photoredox/Nickel Dual Catalysis: Decarboxylative Cross-Coupling of Carboxylic Acids with Aryl Iodides. ACS Catal 2017. [DOI: 10.1021/acscatal.6b03687] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Affiliation(s)
- Christopher D. McTiernan
- Department of Chemistry and Biomolecular Sciences and Centre for Catalysis Research and Innovation, University of Ottawa, 10 Marie Curie, Ottawa, Ontario K1N 6N5, Canada
| | - Xavier Leblanc
- Department of Chemistry and Biomolecular Sciences and Centre for Catalysis Research and Innovation, University of Ottawa, 10 Marie Curie, Ottawa, Ontario K1N 6N5, Canada
| | - Juan C. Scaiano
- Department of Chemistry and Biomolecular Sciences and Centre for Catalysis Research and Innovation, University of Ottawa, 10 Marie Curie, Ottawa, Ontario K1N 6N5, Canada
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40
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Kumar P, Guntreddi T, Singh R, Singh KN. A practical protocol for the synthesis of bibenzyls via C(sp3)–H activation of methyl arenes under metal-free conditions. Org Chem Front 2017. [DOI: 10.1039/c6qo00529b] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
A variety of bibenzyl derivatives have been synthesized with excellent atom economy via C(sp3)–H–C(sp3)–H coupling of readily available methyl arenes using K2S2O8 under metal-free and environmentally benign conditions.
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Affiliation(s)
- Promod Kumar
- Department of Chemistry (Centre of Advanced Study)
- Institute of Science
- Banaras Hindu University
- Varanasi 221005
- India
| | - Tirumaleswararao Guntreddi
- Department of Chemistry (Centre of Advanced Study)
- Institute of Science
- Banaras Hindu University
- Varanasi 221005
- India
| | - Rahul Singh
- Department of Chemistry (Centre of Advanced Study)
- Institute of Science
- Banaras Hindu University
- Varanasi 221005
- India
| | - Krishna Nand Singh
- Department of Chemistry (Centre of Advanced Study)
- Institute of Science
- Banaras Hindu University
- Varanasi 221005
- India
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41
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Xu K, Tan Z, Zhang H, Liu J, Zhang S, Wang Z. Photoredox catalysis enabled alkylation of alkenyl carboxylic acids with N-(acyloxy)phthalimide via dual decarboxylation. Chem Commun (Camb) 2017; 53:10719-10722. [DOI: 10.1039/c7cc05910h] [Citation(s) in RCA: 62] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
A ruthenium based photoredox catalyst in combination with DBACO efficiently catalyzed dual decarboxylative couplings between alkenyl carboxylic acids and redox active esters.
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Affiliation(s)
- Kun Xu
- College of Chemistry and Pharmaceutical Engineering
- Nanyang Normal University
- Nanyang
- P. R. China
| | - Zhoumei Tan
- College of Chemistry and Pharmaceutical Engineering
- Nanyang Normal University
- Nanyang
- P. R. China
| | - Haonan Zhang
- College of Chemistry and Pharmaceutical Engineering
- Nanyang Normal University
- Nanyang
- P. R. China
| | - Juanli Liu
- College of Chemistry and Pharmaceutical Engineering
- Nanyang Normal University
- Nanyang
- P. R. China
| | - Sheng Zhang
- College of Chemistry and Pharmaceutical Engineering
- Nanyang Normal University
- Nanyang
- P. R. China
| | - Zhiqiang Wang
- College of Chemistry and Pharmaceutical Engineering
- Nanyang Normal University
- Nanyang
- P. R. China
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42
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Park G, Yi SY, Jung J, Cho EJ, You Y. Mechanism and Applications of the Photoredox Catalytic Coupling of Benzyl Bromides. Chemistry 2016; 22:17790-17799. [DOI: 10.1002/chem.201603517] [Citation(s) in RCA: 42] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2016] [Indexed: 11/10/2022]
Affiliation(s)
- Gyurim Park
- Department of Food Science and Engineering; Ewha Womans University; Seoul 03760 Republic of Korea
| | - Seung Yeon Yi
- Department of Chemistry and Nano Science; Ewha Womans University; Seoul 03760 Republic of Korea
| | - Jaehun Jung
- Department of Applied Chemistry; Hanyang University; Ansan 15588 Republic of Korea
| | - Eun Jin Cho
- Department of Chemistry; Chung-Ang University; Seoul 06974 Republic of Korea
| | - Youngmin You
- Division of Chemical Engineering and Materials Science; Ewha Womans University; Seoul 03760 Republic of Korea
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43
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Capaldo L, Buzzetti L, Merli D, Fagnoni M, Ravelli D. Smooth Photocatalyzed Benzylation of Electrophilic Olefins via Decarboxylation of Arylacetic Acids. J Org Chem 2016; 81:7102-9. [DOI: 10.1021/acs.joc.6b00984] [Citation(s) in RCA: 55] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Luca Capaldo
- PhotoGreen Lab, Department
of Chemistry, University of Pavia, Viale Taramelli 12, 27100 Pavia, Italy
| | - Luca Buzzetti
- PhotoGreen Lab, Department
of Chemistry, University of Pavia, Viale Taramelli 12, 27100 Pavia, Italy
| | - Daniele Merli
- PhotoGreen Lab, Department
of Chemistry, University of Pavia, Viale Taramelli 12, 27100 Pavia, Italy
| | - Maurizio Fagnoni
- PhotoGreen Lab, Department
of Chemistry, University of Pavia, Viale Taramelli 12, 27100 Pavia, Italy
| | - Davide Ravelli
- PhotoGreen Lab, Department
of Chemistry, University of Pavia, Viale Taramelli 12, 27100 Pavia, Italy
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44
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Yu W, Xu XH, Qing FL. Visible light-induced monofluoromethylenation of heteroarenes with ethyl bromofluoroacetate. NEW J CHEM 2016. [DOI: 10.1039/c6nj00281a] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A mild approach for the direct introduction of an ethoxycarbonylmonofluoromethyl group into heteroarenes via visible light photocatalysis has been developed.
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Affiliation(s)
- Wei Yu
- Key Laboratory of Organofluorine Chemistry
- Shanghai Institute of Organic Chemistry
- Chinese Academy of Science
- Shanghai 200032
- China
| | - Xiu-Hua Xu
- Key Laboratory of Organofluorine Chemistry
- Shanghai Institute of Organic Chemistry
- Chinese Academy of Science
- Shanghai 200032
- China
| | - Feng-Ling Qing
- Key Laboratory of Organofluorine Chemistry
- Shanghai Institute of Organic Chemistry
- Chinese Academy of Science
- Shanghai 200032
- China
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45
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Sharma S, Sultan S, Devari S, Shah BA. Radical–radical cross coupling reactions of photo-excited fluorenones. Org Biomol Chem 2016; 14:9645-9649. [DOI: 10.1039/c6ob01879c] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Radical–radical cross coupling reactions of photoexcited 9-fluorenones have been accomplished for the first time, leading to the synthesis of 9-alkyl, pyrollidinyl and spiro-THF derivatives of 9-fluorenones.
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Affiliation(s)
- Simmi Sharma
- Academy of Scientific and Innovative Research
- Natural Product Microbes
- CSIR-Indian Institute of Integrative Medicine
- Jammu-Tawi
- India
| | - Shaista Sultan
- Academy of Scientific and Innovative Research
- Natural Product Microbes
- CSIR-Indian Institute of Integrative Medicine
- Jammu-Tawi
- India
| | - Shekaraiah Devari
- Academy of Scientific and Innovative Research
- Natural Product Microbes
- CSIR-Indian Institute of Integrative Medicine
- Jammu-Tawi
- India
| | - Bhahwal Ali Shah
- Academy of Scientific and Innovative Research
- Natural Product Microbes
- CSIR-Indian Institute of Integrative Medicine
- Jammu-Tawi
- India
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46
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Manley DW, Walton JC. Preparative semiconductor photoredox catalysis: An emerging theme in organic synthesis. Beilstein J Org Chem 2015; 11:1570-82. [PMID: 26664577 PMCID: PMC4660884 DOI: 10.3762/bjoc.11.173] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2015] [Accepted: 08/19/2015] [Indexed: 11/23/2022] Open
Abstract
Heterogeneous semiconductor photoredox catalysis (SCPC), particularly with TiO2, is evolving to provide radically new synthetic applications. In this review we describe how photoactivated SCPCs can either (i) interact with a precursor that donates an electron to the semiconductor thus generating a radical cation; or (ii) interact with an acceptor precursor that picks up an electron with production of a radical anion. The radical cations of appropriate donors convert to neutral radicals usually by loss of a proton. The most efficient donors for synthetic purposes contain adjacent functional groups such that the neutral radicals are resonance stabilized. Thus, ET from allylic alkenes and enol ethers generated allyl type radicals that reacted with 1,2-diazine or imine co-reactants to yield functionalized hydrazones or benzylanilines. SCPC with tertiary amines enabled electron-deficient alkenes to be alkylated and furoquinolinones to be accessed. Primary amines on their own led to self-reactions involving C-N coupling and, with terminal diamines, cyclic amines were produced. Carboxylic acids were particularly fruitful affording C-centered radicals that alkylated alkenes and took part in tandem addition cyclizations producing chromenopyrroles; decarboxylative homo-dimerizations were also observed. Acceptors initially yielding radical anions included nitroaromatics and aromatic iodides. The latter led to hydrodehalogenations and cyclizations with suitable precursors. Reductive SCPC also enabled electron-deficient alkenes and aromatic aldehydes to be hydrogenated without the need for hydrogen gas.
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Affiliation(s)
- David W Manley
- University of St. Andrews, EaStCHEM School of Chemistry, St. Andrews, Fife, KY16 9ST, UK
| | - John C Walton
- University of St. Andrews, EaStCHEM School of Chemistry, St. Andrews, Fife, KY16 9ST, UK
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47
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Zhou QQ, Guo W, Ding W, Wu X, Chen X, Lu LQ, Xiao WJ. Decarboxylative Alkynylation and Carbonylative Alkynylation of Carboxylic Acids Enabled by Visible-Light Photoredox Catalysis. Angew Chem Int Ed Engl 2015; 54:11196-9. [DOI: 10.1002/anie.201504559] [Citation(s) in RCA: 255] [Impact Index Per Article: 28.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2015] [Revised: 06/17/2015] [Indexed: 01/08/2023]
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48
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Zhou QQ, Guo W, Ding W, Wu X, Chen X, Lu LQ, Xiao WJ. Decarboxylative Alkynylation and Carbonylative Alkynylation of Carboxylic Acids Enabled by Visible-Light Photoredox Catalysis. Angew Chem Int Ed Engl 2015. [DOI: 10.1002/ange.201504559] [Citation(s) in RCA: 84] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
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49
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Pordanjani HM, Faderl C, Wang J, Motti CA, Junk PC, Oelgemöller M. Photodecarboxylative Benzylations of N-Methoxyphthalimide under Batch and Continuous-Flow Conditions. Aust J Chem 2015. [DOI: 10.1071/ch15356] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
A series of photodecarboxylative benzylations of N-methoxyphthalimide were successfully realised using easily accessible starting materials. The reactions proceeded smoothly and the corresponding benzylated hydroxyphthalimidines were obtained in moderate to good yields of 52–73 %. No competing photoinduced dealkoxylation of the N-methoxy group was observed. The reaction with potassium phenylacetate was subsequently investigated in an advanced continuous-flow photoreactor. The reactor allowed rapid optimization of the reaction conditions and gave the desired benzylated product in higher yield and shorter irradiation time compared with the batch process.
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50
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Bhat VT, Duspara PA, Seo S, Abu Bakar NSB, Greaney MF. Visible light promoted thiol-ene reactions using titanium dioxide. Chem Commun (Camb) 2015; 51:4383-5. [DOI: 10.1039/c4cc09987g] [Citation(s) in RCA: 95] [Impact Index Per Article: 10.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Thiol-ene chemistry under mild conditions is reported using titania as a cheap and user-friendly photoredox catalyst.
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Affiliation(s)
| | | | - Sangwon Seo
- School of Chemistry
- University of Manchester
- Manchester
- UK
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