51
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Tintori G, Nabokoff P, Buhaibeh R, Bergé-Lefranc D, Redon S, Broggi J, Vanelle P. Base-Free Generation of Organic Electron Donors from Air-Stable Precursors. Angew Chem Int Ed Engl 2018; 57:3148-3153. [DOI: 10.1002/anie.201713079] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2017] [Indexed: 01/01/2023]
Affiliation(s)
- Guillaume Tintori
- Aix Marseille Univ, CNRS; Institut de Chimie Radicalaire ICR; Faculté de Pharmacie; Marseille France
| | - Pierre Nabokoff
- Aix Marseille Univ, CNRS; Institut de Chimie Radicalaire ICR; Faculté de Pharmacie; Marseille France
| | - Ruqaya Buhaibeh
- Aix Marseille Univ, CNRS; Institut de Chimie Radicalaire ICR; Faculté de Pharmacie; Marseille France
| | - David Bergé-Lefranc
- Aix Marseille Univ, CNRS, IRD; Laboratoire IMBE UMR 7263; Faculté de Pharmacie; Marseille France
| | - Sébastien Redon
- Aix Marseille Univ, CNRS; Institut de Chimie Radicalaire ICR; Faculté de Pharmacie; Marseille France
| | - Julie Broggi
- Aix Marseille Univ, CNRS; Institut de Chimie Radicalaire ICR; Faculté de Pharmacie; Marseille France
| | - Patrice Vanelle
- Aix Marseille Univ, CNRS; Institut de Chimie Radicalaire ICR; Faculté de Pharmacie; Marseille France
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52
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Tintori G, Nabokoff P, Buhaibeh R, Bergé-Lefranc D, Redon S, Broggi J, Vanelle P. Base-Free Generation of Organic Electron Donors from Air-Stable Precursors. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201713079] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Affiliation(s)
- Guillaume Tintori
- Aix Marseille Univ, CNRS; Institut de Chimie Radicalaire ICR; Faculté de Pharmacie; Marseille France
| | - Pierre Nabokoff
- Aix Marseille Univ, CNRS; Institut de Chimie Radicalaire ICR; Faculté de Pharmacie; Marseille France
| | - Ruqaya Buhaibeh
- Aix Marseille Univ, CNRS; Institut de Chimie Radicalaire ICR; Faculté de Pharmacie; Marseille France
| | - David Bergé-Lefranc
- Aix Marseille Univ, CNRS, IRD; Laboratoire IMBE UMR 7263; Faculté de Pharmacie; Marseille France
| | - Sébastien Redon
- Aix Marseille Univ, CNRS; Institut de Chimie Radicalaire ICR; Faculté de Pharmacie; Marseille France
| | - Julie Broggi
- Aix Marseille Univ, CNRS; Institut de Chimie Radicalaire ICR; Faculté de Pharmacie; Marseille France
| | - Patrice Vanelle
- Aix Marseille Univ, CNRS; Institut de Chimie Radicalaire ICR; Faculté de Pharmacie; Marseille France
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53
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Ruamps M, Bastin S, Rechignat L, Sournia-Saquet A, Valyaev DA, Mouesca JM, Lugan N, Maurel V, César V. Unveiling the redox-active character of imidazolin-2-thiones derived from amino-substituted N-heterocyclic carbenes. Chem Commun (Camb) 2018; 54:7653-7656. [DOI: 10.1039/c8cc03934h] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
Spectroscopic, structural and computational studies on the amino-substituted imidazolin-2-thiones reveal the imidazolyl ring to be redox active.
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Affiliation(s)
- Mirko Ruamps
- LCC-CNRS, Université de Toulouse
- INPT
- UPS
- 31077 Toulouse cedex 4
- France
| | - Stéphanie Bastin
- LCC-CNRS, Université de Toulouse
- INPT
- UPS
- 31077 Toulouse cedex 4
- France
| | - Lionel Rechignat
- LCC-CNRS, Université de Toulouse
- INPT
- UPS
- 31077 Toulouse cedex 4
- France
| | | | | | | | - Noël Lugan
- LCC-CNRS, Université de Toulouse
- INPT
- UPS
- 31077 Toulouse cedex 4
- France
| | | | - Vincent César
- LCC-CNRS, Université de Toulouse
- INPT
- UPS
- 31077 Toulouse cedex 4
- France
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54
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Nozawa-Kumada K, Abe E, Ito S, Shigeno M, Kondo Y. Super electron donor-mediated reductive transformation of nitrobenzenes: a novel strategy to synthesize azobenzenes and phenazines. Org Biomol Chem 2018; 16:3095-3098. [DOI: 10.1039/c8ob00271a] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The transformation of nitrobenzenes into azobenzenes by pyridine-derived super electron donor 2 is described.
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Affiliation(s)
| | - Erina Abe
- Graduate School of Pharmaceutical Sciences
- Tohoku University
- Sendai 980-8578
- Japan
| | - Shungo Ito
- Graduate School of Pharmaceutical Sciences
- Tohoku University
- Sendai 980-8578
- Japan
| | - Masanori Shigeno
- Graduate School of Pharmaceutical Sciences
- Tohoku University
- Sendai 980-8578
- Japan
| | - Yoshinori Kondo
- Graduate School of Pharmaceutical Sciences
- Tohoku University
- Sendai 980-8578
- Japan
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55
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Li M, Berritt S, Matuszewski L, Deng G, Pascual-Escudero A, Panetti GB, Poznik M, Yang X, Chruma JJ, Walsh PJ. Transition-Metal-Free Radical C(sp 3)-C(sp 2) and C(sp 3)-C(sp 3) Coupling Enabled by 2-Azaallyls as Super-Electron-Donors and Coupling-Partners. J Am Chem Soc 2017; 139:16327-16333. [PMID: 29019654 PMCID: PMC5737768 DOI: 10.1021/jacs.7b09394] [Citation(s) in RCA: 64] [Impact Index Per Article: 9.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Abstract
The past decade has witnessed the rapid development of radical generation strategies and their applications in C-C bond-forming reactions. Most of these processes require initiators, transition metal catalysts, or organometallic reagents. Herein, we report the discovery of a simple organic system (2-azaallyl anions) that enables radical coupling reactions under transition-metal-free conditions. Deprotonation of N-benzyl ketimines generates semistabilized 2-azaallyl anions that behave as "super-electron-donors" (SEDs) and reduce aryl iodides and alkyl halides to aryl and alkyl radicals. The SET process converts the 2-azaallyl anions into persistent 2-azaallyl radicals, which capture the aryl and alkyl radicals to form C-C bonds. The radical coupling of aryl and alkyl radicals with 2-azaallyl radicals makes possible the synthesis of functionalized amine derivatives without the use of exogenous radical initiators or transition metal catalysts. Radical clock studies and 2-azaallyl anion coupling studies provide mechanistic insight for this unique reactivity.
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Affiliation(s)
- Minyan Li
- Department of Chemistry, Roy and Diana Vagelos Laboratories, Penn/Merck Laboratory for High-Throughput Experimentation, University of Pennsylvania, 231 South 34th Street, Philadelphia, Pennsylvania 19104, USA
| | - Simon Berritt
- Department of Chemistry, Roy and Diana Vagelos Laboratories, Penn/Merck Laboratory for High-Throughput Experimentation, University of Pennsylvania, 231 South 34th Street, Philadelphia, Pennsylvania 19104, USA
| | - Lucas Matuszewski
- Department of Chemistry, Roy and Diana Vagelos Laboratories, Penn/Merck Laboratory for High-Throughput Experimentation, University of Pennsylvania, 231 South 34th Street, Philadelphia, Pennsylvania 19104, USA
| | - Guogang Deng
- Key Laboratory of Medicinal Chemistry for Natural Resource, School of Chemical Science and Technology, Yunnan University, Kunming, 650091, China
| | - Ana Pascual-Escudero
- Dpto. Química Orgánica, Facultad de Ciencias, Universidad Autónoma de Madrid, Madrid, Spain
| | - Grace B. Panetti
- Department of Chemistry, Roy and Diana Vagelos Laboratories, Penn/Merck Laboratory for High-Throughput Experimentation, University of Pennsylvania, 231 South 34th Street, Philadelphia, Pennsylvania 19104, USA
| | - Michal Poznik
- Key Laboratory of Green Chemistry & Technology (MOE), College of Chemistry and Sino-British Materials Research Institute, College of Physical Science & Technology, Sichuan University, No. 29, Wangjiang Road, Chengdu, Sichuan, 610064, China
| | - Xiaodong Yang
- Key Laboratory of Medicinal Chemistry for Natural Resource, School of Chemical Science and Technology, Yunnan University, Kunming, 650091, China
| | - Jason J. Chruma
- Key Laboratory of Green Chemistry & Technology (MOE), College of Chemistry and Sino-British Materials Research Institute, College of Physical Science & Technology, Sichuan University, No. 29, Wangjiang Road, Chengdu, Sichuan, 610064, China
| | - Patrick J. Walsh
- Department of Chemistry, Roy and Diana Vagelos Laboratories, Penn/Merck Laboratory for High-Throughput Experimentation, University of Pennsylvania, 231 South 34th Street, Philadelphia, Pennsylvania 19104, USA
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56
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Back J, Park J, Kim Y, Kang H, Kim Y, Park MJ, Kim K, Lee E. Triazenyl Radicals Stabilized by N-Heterocyclic Carbenes. J Am Chem Soc 2017; 139:15300-15303. [DOI: 10.1021/jacs.7b08753] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Jisu Back
- Center
for Self-Assembly and Complexity, Institute for Basic Science (IBS), Pohang 790-784, Republic of Korea
- Department
of Chemistry, Pohang University of Science and Technology, Pohang 790-784, Republic of Korea
| | - Junbeom Park
- Center
for Self-Assembly and Complexity, Institute for Basic Science (IBS), Pohang 790-784, Republic of Korea
- Department
of Chemistry, Pohang University of Science and Technology, Pohang 790-784, Republic of Korea
| | - Youngsuk Kim
- Center
for Self-Assembly and Complexity, Institute for Basic Science (IBS), Pohang 790-784, Republic of Korea
- Department
of Chemistry, Pohang University of Science and Technology, Pohang 790-784, Republic of Korea
| | - Haneol Kang
- Department
of Chemistry, Pohang University of Science and Technology, Pohang 790-784, Republic of Korea
| | - Yonghwi Kim
- Center
for Self-Assembly and Complexity, Institute for Basic Science (IBS), Pohang 790-784, Republic of Korea
| | - Moon Jeong Park
- Department
of Chemistry, Pohang University of Science and Technology, Pohang 790-784, Republic of Korea
| | - Kimoon Kim
- Center
for Self-Assembly and Complexity, Institute for Basic Science (IBS), Pohang 790-784, Republic of Korea
- Department
of Chemistry, Pohang University of Science and Technology, Pohang 790-784, Republic of Korea
- Division
of Advanced Materials Science, Pohang University of Science and Technology, Pohang 790-784, Republic of Korea
| | - Eunsung Lee
- Center
for Self-Assembly and Complexity, Institute for Basic Science (IBS), Pohang 790-784, Republic of Korea
- Department
of Chemistry, Pohang University of Science and Technology, Pohang 790-784, Republic of Korea
- Division
of Advanced Materials Science, Pohang University of Science and Technology, Pohang 790-784, Republic of Korea
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57
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Plesniak MP, Huang HM, Procter DJ. Radical cascade reactions triggered by single electron transfer. Nat Rev Chem 2017. [DOI: 10.1038/s41570-017-0077] [Citation(s) in RCA: 169] [Impact Index Per Article: 24.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
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58
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Mandal D, Dolai R, Chrysochos N, Kalita P, Kumar R, Dhara D, Maiti A, Narayanan RS, Rajaraman G, Schulzke C, Chandrasekhar V, Jana A. Stepwise Reversible Oxidation of N-Peralkyl-Substituted NHC–CAAC Derived Triazaalkenes: Isolation of Radical Cations and Dications. Org Lett 2017; 19:5605-5608. [DOI: 10.1021/acs.orglett.7b02721] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Debdeep Mandal
- TIFR Centre for Interdisciplinary Sciences Hyderabad, 21, Brundavan Colony, Narsingi, Hyderabad 500075, India
| | - Ramapada Dolai
- TIFR Centre for Interdisciplinary Sciences Hyderabad, 21, Brundavan Colony, Narsingi, Hyderabad 500075, India
| | - Nicolas Chrysochos
- Institut
für Biochemie, Ernst-Moritz-Arndt Universität Greifswald, Felix-Hausdorff-Straße 4, D-17487 Greifswald, Germany
| | - Pankaj Kalita
- School
of Chemical Sciences, National Institute of Science Education and Research, Bhimpur-Padampur, Jatni, Khurda, Bhubaneswar 752050, Odisha, India
| | - Ravi Kumar
- Department
of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai 400076, India
| | - Debabrata Dhara
- TIFR Centre for Interdisciplinary Sciences Hyderabad, 21, Brundavan Colony, Narsingi, Hyderabad 500075, India
| | - Avijit Maiti
- TIFR Centre for Interdisciplinary Sciences Hyderabad, 21, Brundavan Colony, Narsingi, Hyderabad 500075, India
| | | | - Gopalan Rajaraman
- Department
of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai 400076, India
| | - Carola Schulzke
- Institut
für Biochemie, Ernst-Moritz-Arndt Universität Greifswald, Felix-Hausdorff-Straße 4, D-17487 Greifswald, Germany
| | - Vadapalli Chandrasekhar
- TIFR Centre for Interdisciplinary Sciences Hyderabad, 21, Brundavan Colony, Narsingi, Hyderabad 500075, India
- Department
of Chemistry, Indian Institute of Technology Kanpur, Kanpur 208016, India
| | - Anukul Jana
- TIFR Centre for Interdisciplinary Sciences Hyderabad, 21, Brundavan Colony, Narsingi, Hyderabad 500075, India
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59
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Su Y, Li Y, Ganguly R, Kinjo R. Crystalline boron-linked tetraaminoethylene radical cations. Chem Sci 2017; 8:7419-7423. [PMID: 29163893 PMCID: PMC5674142 DOI: 10.1039/c7sc03528d] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2017] [Accepted: 09/12/2017] [Indexed: 01/13/2023] Open
Abstract
Boron-linked tetraaminoethylene radical cations has been isolated.
Single-electron oxidation of neutral boryl-linked tetraaminoethylene derivatives 4 led to the formation of radical cations 4˙+, which have been isolated and fully characterized. X-ray diffraction analysis, EPR spectroscopy, and computational studies revealed that the unpaired electron is delocalized over the B2N4C2 skeleton and the spin density mainly resides on the carbon and boron atoms.
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Affiliation(s)
- Yuanting Su
- Division of Chemistry and Biological Chemistry , School of Physical and Mathematical Sciences , Nanyang Technological University , Nanyang Link 21 , Singapore 637371 .
| | - Yongxin Li
- Division of Chemistry and Biological Chemistry , School of Physical and Mathematical Sciences , Nanyang Technological University , Nanyang Link 21 , Singapore 637371 .
| | - Rakesh Ganguly
- Division of Chemistry and Biological Chemistry , School of Physical and Mathematical Sciences , Nanyang Technological University , Nanyang Link 21 , Singapore 637371 .
| | - Rei Kinjo
- Division of Chemistry and Biological Chemistry , School of Physical and Mathematical Sciences , Nanyang Technological University , Nanyang Link 21 , Singapore 637371 .
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60
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Brasholz M. “Super-reduzierende” Photokatalyse: konsekutive Energie- und Elektronentransfers mit polycyclischen aromatischen Kohlenwasserstoffen. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201704763] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Affiliation(s)
- Malte Brasholz
- Fachbereich Chemie - Institut für Organische Chemie; Universität Hamburg; Martin-Luther-King-Platz 6 20146 Hamburg Deutschland
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61
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Brasholz M. "Super-Reducing" Photocatalysis: Consecutive Energy and Electron Transfers with Polycyclic Aromatic Hydrocarbons. Angew Chem Int Ed Engl 2017. [PMID: 28643362 DOI: 10.1002/anie.201704763] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
Donation welcome: Recent developments in visible-light photocatalysis allow the utilization of increasingly negative reduction potentials. Successive energy and electron transfer with polycyclic aromatic hydrocarbons enables the catalytic formation of strongly reducing arene radical anions, classical stoichiometric reagents for one-electron reduction in organic synthesis.
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Affiliation(s)
- Malte Brasholz
- Department of Chemisty-Institute of Organic Chemistry, University of Hamburg, Martin-Luther-King-Platz 6, 20146, Hamburg, Germany
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62
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Melaimi M, Jazzar R, Soleilhavoup M, Bertrand G. Cyclische Alkylaminocarbene (CAACs): Neues von guten Bekannten. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201702148] [Citation(s) in RCA: 203] [Impact Index Per Article: 29.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Affiliation(s)
- Mohand Melaimi
- UCSD-CNRS Joint Research Chemistry Laboratory, UMI 3555, Department of Chemistry and Biochemistry University of California, San Diego La Jolla CA 92093-0358 USA
| | - Rodolphe Jazzar
- UCSD-CNRS Joint Research Chemistry Laboratory, UMI 3555, Department of Chemistry and Biochemistry University of California, San Diego La Jolla CA 92093-0358 USA
| | - Michèle Soleilhavoup
- UCSD-CNRS Joint Research Chemistry Laboratory, UMI 3555, Department of Chemistry and Biochemistry University of California, San Diego La Jolla CA 92093-0358 USA
| | - Guy Bertrand
- UCSD-CNRS Joint Research Chemistry Laboratory, UMI 3555, Department of Chemistry and Biochemistry University of California, San Diego La Jolla CA 92093-0358 USA
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63
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Melaimi M, Jazzar R, Soleilhavoup M, Bertrand G. Cyclic (Alkyl)(amino)carbenes (CAACs): Recent Developments. Angew Chem Int Ed Engl 2017; 56:10046-10068. [DOI: 10.1002/anie.201702148] [Citation(s) in RCA: 507] [Impact Index Per Article: 72.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2017] [Indexed: 11/07/2022]
Affiliation(s)
- Mohand Melaimi
- UCSD-CNRS Joint Research Chemistry Laboratory, UMI 3555, Department of Chemistry and Biochemistry University of California, San Diego La Jolla CA 92093-0358 USA
| | - Rodolphe Jazzar
- UCSD-CNRS Joint Research Chemistry Laboratory, UMI 3555, Department of Chemistry and Biochemistry University of California, San Diego La Jolla CA 92093-0358 USA
| | - Michèle Soleilhavoup
- UCSD-CNRS Joint Research Chemistry Laboratory, UMI 3555, Department of Chemistry and Biochemistry University of California, San Diego La Jolla CA 92093-0358 USA
| | - Guy Bertrand
- UCSD-CNRS Joint Research Chemistry Laboratory, UMI 3555, Department of Chemistry and Biochemistry University of California, San Diego La Jolla CA 92093-0358 USA
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64
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Eberle B, Kaifer E, Himmel HJ. A Stable Hexakis(guanidino)benzene: Realization of the Strongest Neutral Organic Four-Electron Donor. Angew Chem Int Ed Engl 2017; 56:3360-3363. [DOI: 10.1002/anie.201611189] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2016] [Indexed: 01/12/2023]
Affiliation(s)
- Benjamin Eberle
- Anorganisch-Chemisches Institut; Ruprecht-Karls-Universität Heidelberg; Im Neuenheimer Feld 270 69120 Heidelberg Germany
| | - Elisabeth Kaifer
- Anorganisch-Chemisches Institut; Ruprecht-Karls-Universität Heidelberg; Im Neuenheimer Feld 270 69120 Heidelberg Germany
| | - Hans-Jörg Himmel
- Anorganisch-Chemisches Institut; Ruprecht-Karls-Universität Heidelberg; Im Neuenheimer Feld 270 69120 Heidelberg Germany
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65
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Eberle B, Kaifer E, Himmel HJ. Ein stabiles Hexakis(guanidino)benzol: Synthese des stärksten neutralen organischen Vier-Elektronen-Donors. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201611189] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Affiliation(s)
- Benjamin Eberle
- Anorganisch-Chemisches Institut; Ruprecht-Karls-Universität Heidelberg; Im Neuenheimer Feld 270 69120 Heidelberg Deutschland
| | - Elisabeth Kaifer
- Anorganisch-Chemisches Institut; Ruprecht-Karls-Universität Heidelberg; Im Neuenheimer Feld 270 69120 Heidelberg Deutschland
| | - Hans-Jörg Himmel
- Anorganisch-Chemisches Institut; Ruprecht-Karls-Universität Heidelberg; Im Neuenheimer Feld 270 69120 Heidelberg Deutschland
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66
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Visible light-promoted reductive transformations of various organic substances by using hydroxyaryl-substituted benzimidazolines and bases. Tetrahedron 2016. [DOI: 10.1016/j.tet.2016.05.078] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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67
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Munz D, Chu J, Melaimi M, Bertrand G. NHC‐CAAC Heterodimers with Three Stable Oxidation States. Angew Chem Int Ed Engl 2016. [DOI: 10.1002/ange.201607537] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Dominik Munz
- Joint UCSD-CNRS Research Chemistry Laboratory (UMI 3555) Department of Chemistry and Biochemistry University of California San Diego La Jolla CA 92093-0358 USA
| | - Jiaxiang Chu
- Joint UCSD-CNRS Research Chemistry Laboratory (UMI 3555) Department of Chemistry and Biochemistry University of California San Diego La Jolla CA 92093-0358 USA
| | - Mohand Melaimi
- Joint UCSD-CNRS Research Chemistry Laboratory (UMI 3555) Department of Chemistry and Biochemistry University of California San Diego La Jolla CA 92093-0358 USA
| | - Guy Bertrand
- Joint UCSD-CNRS Research Chemistry Laboratory (UMI 3555) Department of Chemistry and Biochemistry University of California San Diego La Jolla CA 92093-0358 USA
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68
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Munz D, Chu J, Melaimi M, Bertrand G. NHC‐CAAC Heterodimers with Three Stable Oxidation States. Angew Chem Int Ed Engl 2016; 55:12886-90. [DOI: 10.1002/anie.201607537] [Citation(s) in RCA: 56] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2016] [Indexed: 11/06/2022]
Affiliation(s)
- Dominik Munz
- Joint UCSD-CNRS Research Chemistry Laboratory (UMI 3555) Department of Chemistry and Biochemistry University of California San Diego La Jolla CA 92093-0358 USA
| | - Jiaxiang Chu
- Joint UCSD-CNRS Research Chemistry Laboratory (UMI 3555) Department of Chemistry and Biochemistry University of California San Diego La Jolla CA 92093-0358 USA
| | - Mohand Melaimi
- Joint UCSD-CNRS Research Chemistry Laboratory (UMI 3555) Department of Chemistry and Biochemistry University of California San Diego La Jolla CA 92093-0358 USA
| | - Guy Bertrand
- Joint UCSD-CNRS Research Chemistry Laboratory (UMI 3555) Department of Chemistry and Biochemistry University of California San Diego La Jolla CA 92093-0358 USA
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69
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70
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Jung J, Kim S, Lee YM, Nam W, Fukuzumi S. Switchover of the Mechanism between Electron Transfer and Hydrogen-Atom Transfer for a Protonated Manganese(IV)-Oxo Complex by Changing Only the Reaction Temperature. Angew Chem Int Ed Engl 2016; 55:7450-4. [PMID: 27191357 DOI: 10.1002/anie.201602460] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2016] [Revised: 03/31/2016] [Indexed: 11/09/2022]
Abstract
Hydroxylation of mesitylene by a nonheme manganese(IV)-oxo complex, [(N4Py)Mn(IV) (O)](2+) (1), proceeds via one-step hydrogen-atom transfer (HAT) with a large deuterium kinetic isotope effect (KIE) of 3.2(3) at 293 K. In contrast, the same reaction with a triflic acid-bound manganese(IV)-oxo complex, [(N4Py)Mn(IV) (O)](2+) -(HOTf)2 (2), proceeds via electron transfer (ET) with no KIE at 293 K. Interestingly, when the reaction temperature is lowered to less than 263 K in the reaction of 2, however, the mechanism changes again from ET to HAT with a large KIE of 2.9(3). Such a switchover of the reaction mechanism from ET to HAT is shown to occur by changing only temperature in the boundary region between ET and HAT pathways when the driving force of ET from toluene derivatives to 2 is around -0.5 eV. The present results provide a valuable and general guide to predict a switchover of the reaction mechanism from ET to the others, including HAT.
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Affiliation(s)
- Jieun Jung
- Department of Chemistry and Nano Science, Ewha Womans University, Seoul, 03760, Korea
| | - Surin Kim
- Department of Chemistry and Nano Science, Ewha Womans University, Seoul, 03760, Korea
| | - Yong-Min Lee
- Department of Chemistry and Nano Science, Ewha Womans University, Seoul, 03760, Korea
| | - Wonwoo Nam
- Department of Chemistry and Nano Science, Ewha Womans University, Seoul, 03760, Korea.
| | - Shunichi Fukuzumi
- Department of Chemistry and Nano Science, Ewha Womans University, Seoul, 03760, Korea. .,Faculty of Science and Engineering, ALCA, SENTAN Japan Science and Technology Agency (JST), Meijo University, Nagoya, Aichi, 468-0073, Japan.
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71
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Jung J, Kim S, Lee Y, Nam W, Fukuzumi S. Switchover of the Mechanism between Electron Transfer and Hydrogen‐Atom Transfer for a Protonated Manganese(IV)–Oxo Complex by Changing Only the Reaction Temperature. Angew Chem Int Ed Engl 2016. [DOI: 10.1002/ange.201602460] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Jieun Jung
- Department of Chemistry and Nano Science Ewha Womans University Seoul 03760 Korea
| | - Surin Kim
- Department of Chemistry and Nano Science Ewha Womans University Seoul 03760 Korea
| | - Yong‐Min Lee
- Department of Chemistry and Nano Science Ewha Womans University Seoul 03760 Korea
| | - Wonwoo Nam
- Department of Chemistry and Nano Science Ewha Womans University Seoul 03760 Korea
| | - Shunichi Fukuzumi
- Department of Chemistry and Nano Science Ewha Womans University Seoul 03760 Korea
- Faculty of Science and Engineering, ALCA SENTAN Japan Science and Technology Agency (JST) Meijo University Nagoya Aichi 468-0073 Japan
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72
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Massey RS, Quinn P, Zhou S, Murphy JA, O'Donoghue AC. Proton transfer reactions of a bridged bis
-propyl bis
-imidazolium salt. J PHYS ORG CHEM 2016. [DOI: 10.1002/poc.3567] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Richard S. Massey
- Department of Chemistry; Durham University; South Road Durham DH1 3LE UK
| | - Peter Quinn
- Department of Chemistry; Durham University; South Road Durham DH1 3LE UK
| | - Shengze Zhou
- WestCHEM, Department of Pure and Applied Chemistry; University of Strathclyde; Glasgow G1 1XL UK
| | - John A. Murphy
- WestCHEM, Department of Pure and Applied Chemistry; University of Strathclyde; Glasgow G1 1XL UK
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73
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Broggi J, Rollet M, Clément JL, Canard G, Terme T, Gigmes D, Vanelle P. Polymerization Initiated by Organic Electron Donors. Angew Chem Int Ed Engl 2016; 55:5994-9. [PMID: 27061743 DOI: 10.1002/anie.201600327] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2016] [Indexed: 11/07/2022]
Abstract
Polymerization reactions with organic electron donors (OED) as initiators are presented herein. The metal-free polymerization of various activated alkene and cyclic ester monomers was performed in short reaction times, under mild conditions, with small amounts of organic reducing agents, and without the need for co-initiators or activation by photochemical, electrochemical, or other methods. Hence, OED initiators enabled the development of an efficient, rapid, room-temperature process that meets the technical standards expected for industrial processes, such as energy savings, cost-effectiveness and safety. Mechanistic investigations support an electron-transfer initiation pathway that leads to the reduction of the monomer.
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Affiliation(s)
- Julie Broggi
- Aix Marseille Univ, CNRS, ICR UMR 7273, 13013, Marseille, France. .,Aix Marseille Univ, CNRS, LPCR (ICR), 13005, Marseille, France.
| | - Marion Rollet
- Aix Marseille Univ, CNRS, ICR UMR 7273, 13013, Marseille, France.,Aix Marseille Univ, CNRS, CROPS (ICR), 13013, Marseille, France
| | - Jean-Louis Clément
- Aix Marseille Univ, CNRS, ICR UMR 7273, 13013, Marseille, France.,Aix Marseille Univ, CNRS, CROPS (ICR), 13013, Marseille, France
| | - Gabriel Canard
- Aix Marseille Univ, CNRS, CINaM UMR 7325, 13009, Marseille, France
| | - Thierry Terme
- Aix Marseille Univ, CNRS, ICR UMR 7273, 13013, Marseille, France.,Aix Marseille Univ, CNRS, LPCR (ICR), 13005, Marseille, France
| | - Didier Gigmes
- Aix Marseille Univ, CNRS, ICR UMR 7273, 13013, Marseille, France.,Aix Marseille Univ, CNRS, CROPS (ICR), 13013, Marseille, France
| | - Patrice Vanelle
- Aix Marseille Univ, CNRS, ICR UMR 7273, 13013, Marseille, France. .,Aix Marseille Univ, CNRS, LPCR (ICR), 13005, Marseille, France.
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74
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Broggi J, Rollet M, Clément J, Canard G, Terme T, Gigmes D, Vanelle P. Polymerization Initiated by Organic Electron Donors. Angew Chem Int Ed Engl 2016. [DOI: 10.1002/ange.201600327] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Julie Broggi
- Aix Marseille Univ, CNRS, ICR UMR 7273 13013 Marseille France
- Aix Marseille Univ, CNRS, LPCR (ICR) 13005 Marseille France
| | - Marion Rollet
- Aix Marseille Univ, CNRS, ICR UMR 7273 13013 Marseille France
- Aix Marseille Univ, CNRS, CROPS (ICR) 13013 Marseille France
| | - Jean‐Louis Clément
- Aix Marseille Univ, CNRS, ICR UMR 7273 13013 Marseille France
- Aix Marseille Univ, CNRS, CROPS (ICR) 13013 Marseille France
| | - Gabriel Canard
- Aix Marseille Univ, CNRS, CINaM UMR 7325 13009 Marseille France
| | - Thierry Terme
- Aix Marseille Univ, CNRS, ICR UMR 7273 13013 Marseille France
- Aix Marseille Univ, CNRS, LPCR (ICR) 13005 Marseille France
| | - Didier Gigmes
- Aix Marseille Univ, CNRS, ICR UMR 7273 13013 Marseille France
- Aix Marseille Univ, CNRS, CROPS (ICR) 13013 Marseille France
| | - Patrice Vanelle
- Aix Marseille Univ, CNRS, ICR UMR 7273 13013 Marseille France
- Aix Marseille Univ, CNRS, LPCR (ICR) 13005 Marseille France
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75
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Rayala R, Giuglio-Tonolo A, Broggi J, Terme T, Vanelle P, Theard P, Médebielle M, Wnuk SF. Studies toward the oxidative and reductive activation of C-S bonds in 2'- S-aryl-2'-thiouridine derivatives. Tetrahedron 2016; 72:1969-1977. [PMID: 27019535 DOI: 10.1016/j.tet.2016.02.063] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Studies directed toward the oxidative and reductive desulfurization of readily available 2'-S-aryl-2'-thiouridine derivatives were investigated with the prospect to functionalize the C2'-position of nucleosides. The oxidative desulfurization-difluorination strategy was successful on 2-(arylthio)alkanoate surrogates, while extension of the combination of oxidants and fluoride sources was not an efficient fluorination protocol when applied to 2'-S-aryl-2'-thiouridine derivatives, resulting mainly in C5-halogenation of the pyrimidine ring and C2'-monofluorination without desulfurization. Cyclic voltammetry of 2'-arylsulfonyl-2'-deoxyuridines and their 2'-fluorinated analogues showed that cleavage of the arylsulfone moiety could occur, although at relatively high cathodic potentials. While reductive-desulfonylation of 2'-arylsulfonyl-2'-deoxyuridines with organic electron donors (OEDs) gave predominantly base-induced furan type products, chemical (OED) and electrochemical reductive-desulfonylation of the α-fluorosulfone derivatives yielded the 2'-deoxy-2'-fluorouridine and 2',3'-didehydro-2',3'-dideoxy-2'-fluorouridine derivatives. These results provided good evidence of the generation of a C2'-anion through carbon-sulfur bond cleavage, opening new horizons for the reductive-functionalization approaches in nucleosides.
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Affiliation(s)
- Ramanjaneyulu Rayala
- Department of Chemistry and Biochemistry, Florida International University, Miami, FL, USA
| | - Alain Giuglio-Tonolo
- Department of Chemistry and Biochemistry, Florida International University, Miami, FL, USA; Aix Marseille Université, CNRS, ICR UMR 7273, 13385, Marseille Cedex 05, France
| | - Julie Broggi
- Aix Marseille Université, CNRS, ICR UMR 7273, 13385, Marseille Cedex 05, France
| | - Thierry Terme
- Aix Marseille Université, CNRS, ICR UMR 7273, 13385, Marseille Cedex 05, France
| | - Patrice Vanelle
- Aix Marseille Université, CNRS, ICR UMR 7273, 13385, Marseille Cedex 05, France
| | - Patricia Theard
- Department of Chemistry and Biochemistry, Florida International University, Miami, FL, USA
| | - Maurice Médebielle
- Université de Lyon & Université Claude Bernard Lyon 1 (UCBL), Institut de Chimie et Biochimie Moléculaires et Supramoléculaires (ICBMS) UMR CNRS-UCBL-INSALyon 5246, 43 bd du 11 Novembre 1918, Villeurbanne, France
| | - Stanislaw F Wnuk
- Department of Chemistry and Biochemistry, Florida International University, Miami, FL, USA
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76
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Patil M. Mechanistic Insights into the Initiation Step of the Base Promoted Direct C–H Arylation of Benzene in the Presence of Additive. J Org Chem 2015; 81:632-9. [DOI: 10.1021/acs.joc.5b02438] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Mahendra Patil
- UM-DAE
Centre for Excellence
in Basic Sciences Health Centre, University of Mumbai Vidyanagari Campus, Kalina, Santacruz (East), Mumbai 400098, India
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77
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Hanson SS, Doni E, Traboulsee KT, Coulthard G, Murphy JA, Dyker CA. Pushing the Limits of Neutral Organic Electron Donors: A Tetra(iminophosphorano)-Substituted Bispyridinylidene. Angew Chem Int Ed Engl 2015. [DOI: 10.1002/ange.201505378] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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78
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Hanson SS, Doni E, Traboulsee KT, Coulthard G, Murphy JA, Dyker CA. Pushing the limits of neutral organic electron donors: a tetra(iminophosphorano)-substituted bispyridinylidene. Angew Chem Int Ed Engl 2015. [PMID: 26213345 PMCID: PMC4581462 DOI: 10.1002/anie.201505378] [Citation(s) in RCA: 71] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/02/2022]
Abstract
A new ground-state organic electron donor has been prepared that features four strongly π-donating iminophosphorano substituents on a bispyridinylidene skeleton. Cyclic voltammetry reveals a record redox potential of −1.70 V vs. saturated calomel electrode (SCE) for the couple involving the neutral organic donor and its dication. This highly reducing organic compound can be isolated (44 %) or more conveniently generated in situ by a deprotonation reaction involving its readily prepared pyridinium ion precursor. This donor is able to reduce a variety of aryl halides, and, owing to its redox potential, was found to be the first organic donor to be effective in the thermally induced reductive S–N bond cleavage of N,N-dialkylsulfonamides, and reductive hydrodecyanation of malonitriles.
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Affiliation(s)
- Samuel S Hanson
- Department of Chemistry, University of New Brunswick, Fredericton, New Brunswick, E3B 5A3 (Canada)
| | - Eswararao Doni
- WestCHEM, Department of Pure and Applied Chemistry, University of Strathclyde, 295 Cathedral Street, Glasgow G1 1XL (UK)
| | - Kyle T Traboulsee
- Department of Chemistry, University of New Brunswick, Fredericton, New Brunswick, E3B 5A3 (Canada)
| | - Graeme Coulthard
- WestCHEM, Department of Pure and Applied Chemistry, University of Strathclyde, 295 Cathedral Street, Glasgow G1 1XL (UK)
| | - John A Murphy
- WestCHEM, Department of Pure and Applied Chemistry, University of Strathclyde, 295 Cathedral Street, Glasgow G1 1XL (UK).
| | - C Adam Dyker
- Department of Chemistry, University of New Brunswick, Fredericton, New Brunswick, E3B 5A3 (Canada).
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79
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Holan M, Pohl R, Císařová I, Klepetářová B, Jones PG, Jahn U. Highly Functionalized Cyclopentane Derivatives by Tandem Michael Addition/Radical Cyclization/Oxygenation Reactions. Chemistry 2015; 21:9877-88. [PMID: 26012714 DOI: 10.1002/chem.201500424] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2015] [Indexed: 01/26/2023]
Abstract
Densely functionalized cyclopentane derivatives with up to four consecutive stereocenters are assembled by a tandem Michael addition/single-electron transfer oxidation/radical cyclization/oxygenation strategy mediated by ferrocenium hexafluorophosphate, a recyclable, less toxic single-electron transfer oxidant. Ester enolates were coupled with α-benzylidene and α-alkylidene β-dicarbonyl compounds with switchable diastereoselectivity. This pivotal steering element subsequently controls the diastereoselectivity of the radical cyclization step. The substitution pattern of the radical cyclization acceptor enables a switch of the cyclization mode from a 5-exo pattern for terminally substituted olefin units to a 6-endo mode for internally substituted acceptors. The oxidative anionic/radical strategy also allows efficient termination by oxygenation with the free radical 2,2,6,6-tetramethyl-1-piperidinoxyl, and two C-C bonds and one C-O bond are thus formed in the sequence. A stereochemical model is proposed that accounts for all of the experimental results and allows the prediction of the stereochemical outcome. Further transformations of the synthesized cyclopentanes are reported.
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Affiliation(s)
- Martin Holan
- Institute of Organic Chemistry and Biochemistry, Academy of Sciences of the Czech Republic, Flemingovo náměstí 2, 16610 Prague (Czech Republic)
| | - Radek Pohl
- Institute of Organic Chemistry and Biochemistry, Academy of Sciences of the Czech Republic, Flemingovo náměstí 2, 16610 Prague (Czech Republic)
| | - Ivana Císařová
- Department of Inorganic Chemistry, Faculty of Science, Charles University in Prague, Hlavova 2030/8, 12843 Prague (Czech Republic)
| | - Blanka Klepetářová
- Institute of Organic Chemistry and Biochemistry, Academy of Sciences of the Czech Republic, Flemingovo náměstí 2, 16610 Prague (Czech Republic)
| | - Peter G Jones
- Institut für Anorganische und Allgemeine Chemie, Technische Universität Braunschweig, Hagenring 30, 38106 Braunschweig (Germany)
| | - Ullrich Jahn
- Institute of Organic Chemistry and Biochemistry, Academy of Sciences of the Czech Republic, Flemingovo náměstí 2, 16610 Prague (Czech Republic).
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80
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Eberle B, Hübner O, Ziesak A, Kaifer E, Himmel HJ. What Makes a Strong Organic Electron Donor (or Acceptor)? Chemistry 2015; 21:8578-90. [DOI: 10.1002/chem.201406597] [Citation(s) in RCA: 70] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2014] [Indexed: 11/10/2022]
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81
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Hanson SS, Richard NA, Dyker CA. Powerful Bispyridinylidene Organic Reducing Agents with Iminophosphorano π-Donor Substituents. Chemistry 2015; 21:8052-5. [DOI: 10.1002/chem.201500809] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2015] [Indexed: 11/10/2022]
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82
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Wang Q, Zecchini M, Wallis JD, Wu Y, Rawson JM, Pilkington M. A family of unsymmetrical hydroxyl-substituted BEDT-TTF donors: syntheses, structures and preliminary thin film studies. RSC Adv 2015. [DOI: 10.1039/c5ra04568a] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Synthetic routes to three novel OH-functionalized BEDT-TTF donorsH1–H3are presented. Charge transfer salts ofH1and2and polystyrene blend thin films ofH3have been studied after doping with iodine.
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Affiliation(s)
- Qiang Wang
- Department of Chemistry
- Brock University
- Canada
- School of Chemistry and Chemical Engineering
- Wuhan Textile University
| | - Matteo Zecchini
- School of Science and Technology
- Nottingham Trent University
- Nottingham
- UK
| | - John D. Wallis
- School of Science and Technology
- Nottingham Trent University
- Nottingham
- UK
| | - Yiliang Wu
- Xerox Research Centre of Canada
- Mississauga
- Canada
- Corporate Technology
- TE Connectivity
| | - Jeremy M. Rawson
- Department of Chemistry and Biochemistry
- University of Windsor
- Windsor
- Canada
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83
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Zhou S, Doni E, Anderson GM, Kane RG, MacDougall SW, Ironmonger VM, Tuttle T, Murphy JA. Identifying the Roles of Amino Acids, Alcohols and 1,2-Diamines as Mediators in Coupling of Haloarenes to Arenes. J Am Chem Soc 2014; 136:17818-26. [DOI: 10.1021/ja5101036] [Citation(s) in RCA: 101] [Impact Index Per Article: 10.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Affiliation(s)
- Shengze Zhou
- WestCHEM,
Department of Pure and Applied Chemistry, University of Strathclyde, 295 Cathedral Street, Glasgow G1 1XL, United Kingdom
| | - Eswararao Doni
- WestCHEM,
Department of Pure and Applied Chemistry, University of Strathclyde, 295 Cathedral Street, Glasgow G1 1XL, United Kingdom
| | - Greg M. Anderson
- WestCHEM,
Department of Pure and Applied Chemistry, University of Strathclyde, 295 Cathedral Street, Glasgow G1 1XL, United Kingdom
| | - Ryan G. Kane
- WestCHEM,
Department of Pure and Applied Chemistry, University of Strathclyde, 295 Cathedral Street, Glasgow G1 1XL, United Kingdom
| | - Scott W. MacDougall
- WestCHEM,
Department of Pure and Applied Chemistry, University of Strathclyde, 295 Cathedral Street, Glasgow G1 1XL, United Kingdom
| | - Victoria M. Ironmonger
- GlaxoSmithKline Medicines Research Centre, Gunnels Wood Road, Stevenage SG1 2NY, United Kingdom
| | - Tell Tuttle
- WestCHEM,
Department of Pure and Applied Chemistry, University of Strathclyde, 295 Cathedral Street, Glasgow G1 1XL, United Kingdom
| | - John A. Murphy
- WestCHEM,
Department of Pure and Applied Chemistry, University of Strathclyde, 295 Cathedral Street, Glasgow G1 1XL, United Kingdom
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84
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Chopin N, Pilet G, Morita Y, Médebielle M. Trifluoromethyl-derived enaminones and their difluoroboron complexes: Synthesis, crystal structure and electrochemistry properties. J Fluor Chem 2014. [DOI: 10.1016/j.jfluchem.2014.07.005] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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85
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Szostak M, Spain M, Procter DJ. Ketyl-Type Radicals from Cyclic and Acyclic Esters are Stabilized by SmI2(H2O)n: The Role of SmI2(H2O)n in Post-Electron Transfer Steps. J Am Chem Soc 2014; 136:8459-66. [DOI: 10.1021/ja503494b] [Citation(s) in RCA: 61] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Affiliation(s)
- Michal Szostak
- School of Chemistry, University of Manchester, Oxford
Road, Manchester, M13 9PL United Kingdom
| | - Malcolm Spain
- School of Chemistry, University of Manchester, Oxford
Road, Manchester, M13 9PL United Kingdom
| | - David J. Procter
- School of Chemistry, University of Manchester, Oxford
Road, Manchester, M13 9PL United Kingdom
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86
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Doni E, Murphy JA. Reductive decyanation of malononitriles and cyanoacetates using photoactivated neutral organic super-electron-donors. Org Chem Front 2014. [DOI: 10.1039/c4qo00202d] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A metal-free reductive procedure for decyanation of malononitriles and cyanoacetates, using photoactivated organic electron donors, is described.
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Affiliation(s)
- Eswararao Doni
- WestCHEM
- Department of Pure and Applied Chemistry
- University of Strathclyde
- Glasgow G1 1XL, UK
| | - John A. Murphy
- WestCHEM
- Department of Pure and Applied Chemistry
- University of Strathclyde
- Glasgow G1 1XL, UK
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