1
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Liu Y, Zhang S, Feng X, Yu X, Yamamoto Y, Bao M. Direct synthesis of phenanthrenyl triflates from 1-biphenylyl-2-diazo-2-aryl ketones and triflic anhydride. Org Biomol Chem 2024; 22:1141-1145. [PMID: 38214226 DOI: 10.1039/d3ob02005c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2024]
Abstract
A strategy for direct synthesis of phenanthrenyl triflates from 1-biphenylyl-2-diazo-2-aryl ketones and triflic anhydride is described. The reaction of 1-biphenylyl-2-diazo-2-aryl ketones with triflic anhydride proceeded smoothly in the presence of 2,6-di-tert-butylpyridine under mild conditions to produce phenanthrenyl triflates in high to excellent yields. The phenanthrenyl triflate products were demonstrated to be utilized as coupling partners in various coupling reactions. The proposed mechanism involves an intramolecular Friedel-Crafts reaction of a vinyl cation intermediate formed in situ.
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Affiliation(s)
- Yueqiang Liu
- State Key Laboratory of Fine Chemicals, Frontier Science Center for Smart Materials, School of Chemical Engineering, Dalian University of Technology, Dalian 116024, China.
| | - Sheng Zhang
- State Key Laboratory of Fine Chemicals, Frontier Science Center for Smart Materials, School of Chemical Engineering, Dalian University of Technology, Dalian 116024, China.
| | - Xiujuan Feng
- State Key Laboratory of Fine Chemicals, Frontier Science Center for Smart Materials, School of Chemical Engineering, Dalian University of Technology, Dalian 116024, China.
| | - Xiaoqiang Yu
- State Key Laboratory of Fine Chemicals, Frontier Science Center for Smart Materials, School of Chemical Engineering, Dalian University of Technology, Dalian 116024, China.
| | - Yoshinori Yamamoto
- State Key Laboratory of Fine Chemicals, Frontier Science Center for Smart Materials, School of Chemical Engineering, Dalian University of Technology, Dalian 116024, China.
- Department of Chemistry, Graduate School of Science, Tohoku University, Sendai 980-8578, Japan
| | - Ming Bao
- State Key Laboratory of Fine Chemicals, Frontier Science Center for Smart Materials, School of Chemical Engineering, Dalian University of Technology, Dalian 116024, China.
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2
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Fontana N, Espinosa-Jalapa NA, Seidl M, Bauer JO. Hidden silylium-type reactivity of a siloxane-based phosphonium-hydroborate ion pair. Chem Commun (Camb) 2022; 58:2144-2147. [PMID: 35050278 DOI: 10.1039/d1cc07016a] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A new class of siloxane-based cations with hidden silylium-type reactivity is provided, which, in combination with an arylborate counteranion, initiates a highly selective para-C(sp2)-F defunctionalization of a perfluorinated aryl group. The hydrodefluorinated aryl borane is obtained as a crystalline solid via continuous sublimation during the reaction. The heterocyclic six-membered cation could be obtained single-crystalline after dehydrogenative anion exchange. DFT calculations give insight into the bonding within the siloxane-based cation and the mechanism of the ion pair reaction.
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Affiliation(s)
- Nicolò Fontana
- Institut für Anorganische Chemie, Fakultät für Chemie und Pharmazie, Universität Regensburg, Universitätsstraße 31, Regensburg D-93053, Germany.
| | - Noel Angel Espinosa-Jalapa
- Institut für Anorganische Chemie, Fakultät für Chemie und Pharmazie, Universität Regensburg, Universitätsstraße 31, Regensburg D-93053, Germany.
| | - Michael Seidl
- Institut für Anorganische Chemie, Fakultät für Chemie und Pharmazie, Universität Regensburg, Universitätsstraße 31, Regensburg D-93053, Germany.
| | - Jonathan O Bauer
- Institut für Anorganische Chemie, Fakultät für Chemie und Pharmazie, Universität Regensburg, Universitätsstraße 31, Regensburg D-93053, Germany.
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3
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Yata T, Nishimoto Y, Yasuda M. Carboboration-Driven Generation of a Silylium Ion for Vinylic C-F Bond Functionalization by B(C 6 F 5 ) 3 Catalysis. Chemistry 2021; 28:e202103852. [PMID: 34837264 DOI: 10.1002/chem.202103852] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2021] [Indexed: 11/05/2022]
Abstract
Strong main-group Lewis acids such as silylium ions are known to effectively promote heterolytic C(sp3 )-F bond cleavage. However, carrying out the C(sp2 )-F bond transformation of vinylic C-F bonds has remained an unmet challenge. Herein, we describe our development of a new and simple strategy for vinylic C-F bond transformation of α-fluorostyrenes with silyl ketene acetals catalyzed by B(C6 F5 )3 under mild conditions. Our theoretical calculations revealed that a stabilized silylium ion, which is generated from silyl ketene acetals by carboboration, cleaves the C-F bond of α-fluorostyrenes. A comparative study of α-chloro or bromostyrenes demonstrated that our reaction can be applied only to α-fluorostyrenes because the strong silicon-fluorine affinity facilitates an intramolecular interaction of silylium ions with fluorine atom to cleave the C-F bond. A broad range of α-fluorostyrenes as well as a range of silyl ketene acetals underwent this C-F bond transformation.
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Affiliation(s)
- Tetsuji Yata
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University, 2-1 Yamadaoka, Suita, Osaka, 565-0871, Japan
| | - Yoshihiro Nishimoto
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University, 2-1 Yamadaoka, Suita, Osaka, 565-0871, Japan.,Innovative Catalysis Science Division, Institute for Open and Transdisciplinary, Research Initiatives (ICS-OTRI), Osaka University, Suita, Osaka, 565-0871, Japan
| | - Makoto Yasuda
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University, 2-1 Yamadaoka, Suita, Osaka, 565-0871, Japan.,Innovative Catalysis Science Division, Institute for Open and Transdisciplinary, Research Initiatives (ICS-OTRI), Osaka University, Suita, Osaka, 565-0871, Japan
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4
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Feofanov M, Förtsch A, Amsharov K, Akhmetov V. Solid-state construction of zigzag periphery via intramolecular C-H insertion induced by alumina-mediated C-F activation. Chem Commun (Camb) 2021; 57:12325-12328. [PMID: 34735559 DOI: 10.1039/d1cc05233k] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Caryl-F bond activation has become an important and quickly developing method for construction of carbon-based materials. We report that alumina-mediated C-F bond activation (AmCFA) enables construction of PAHs with zigzag periphery. This method includes formal Csp3-H activation and opens an avenue for generation of carbon-based nanomagnets directly on technologically relevant surfaces.
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Affiliation(s)
- Mikhail Feofanov
- Institute of Chemistry, Organic Chemistry, Martin-Luther-University Halle-Wittenberg, Kurt-Mothes-Strasse 2, D-06120 Halle, Germany. .,Friedrich-Alexander University Erlangen-Nuernberg, Department of Chemistry and Pharmacy, Organic Chemistry II, Nikolaus-Fiebiger Str. 10, 91058 Erlangen, Germany
| | - Andreas Förtsch
- Institute of Chemistry, Organic Chemistry, Martin-Luther-University Halle-Wittenberg, Kurt-Mothes-Strasse 2, D-06120 Halle, Germany.
| | - Konstantin Amsharov
- Institute of Chemistry, Organic Chemistry, Martin-Luther-University Halle-Wittenberg, Kurt-Mothes-Strasse 2, D-06120 Halle, Germany. .,South Ural State University, pr. Lenina 76, 454080 Chelyabinsk, Russia
| | - Vladimir Akhmetov
- Institute of Chemistry, Organic Chemistry, Martin-Luther-University Halle-Wittenberg, Kurt-Mothes-Strasse 2, D-06120 Halle, Germany. .,Friedrich-Alexander University Erlangen-Nuernberg, Department of Chemistry and Pharmacy, Organic Chemistry II, Nikolaus-Fiebiger Str. 10, 91058 Erlangen, Germany
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5
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Fujita T, Morioka R, Fukuda T, Suzuki N, Ichikawa J. Acid-mediated intermolecular C-F/C-H cross-coupling of 2-fluorobenzofurans with arenes: synthesis of 2-arylbenzofurans. Chem Commun (Camb) 2021; 57:8500-8503. [PMID: 34351333 DOI: 10.1039/d1cc03453g] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Transition-metal-free acid-promoted biaryl construction was achieved via intermolecular C-F/C-H cross-coupling. By treating 2-fluorobenzofurans with arenes in the presence of AlCl3, 2-arylbenzofurans were obtained. This protocol was successfully applied to the short-step orthogonal synthesis of a bioactive 2-arylbenzofuran natural product, which allows independent transformations of C-F and C-Br bonds. Mechanistic studies indicated that α-fluorine-stabilized carbocations, generated via the protonation of 2-fluorobenzofurans, served as key intermediates. The Friedel-Crafts-type C-C bond formation between the α-fluorocarbocations and arenes, followed by hydrogen fluoride elimination, afforded 2-arylbenzofurans.
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Affiliation(s)
- Takeshi Fujita
- Division of Chemistry, Faculty of Pure and Applied Sciences, University of Tsukuba, Tsukuba, Ibaraki 305-8571, Japan.
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6
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Abstract
AbstractThe unique properties of fluorine-containing organic compounds make fluorine substitution attractive for the development of pharmaceuticals and various specialty materials, which have inspired the evolution of diverse C-F bond activation techniques. Although many advances have been made in functionalizations of activated C-F bonds utilizing transition metal complexes, there are fewer approaches available for nonactivated C-F bonds due to the difficulty in oxidative addition of transition metals to the inert C-F bonds. In this regard, using Lewis acid to abstract the fluoride and light/radical initiator to generate the radical intermediate have emerged as powerful tools for activating those inert C-F bonds. Meanwhile, these transition-metal-free processes are greener, economical, and for the pharmaceutical industry, without heavy metal residues. This review provides an overview of recent C-F bond activations and functionalizations under transition-metal-free conditions. The key mechanisms involved are demonstrated and discussed in detail. Finally, a brief discussion on the existing limitations of this field and our perspective are presented.
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7
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Klare HFT, Albers L, Süsse L, Keess S, Müller T, Oestreich M. Silylium Ions: From Elusive Reactive Intermediates to Potent Catalysts. Chem Rev 2021; 121:5889-5985. [PMID: 33861564 DOI: 10.1021/acs.chemrev.0c00855] [Citation(s) in RCA: 97] [Impact Index Per Article: 32.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
The history of silyl cations has all the makings of a drama but with a happy ending. Being considered reactive intermediates impossible to isolate in the condensed phase for decades, their actual characterization in solution and later in solid state did only fuel the discussion about their existence and initially created a lot of controversy. This perception has completely changed today, and silyl cations and their donor-stabilized congeners are now widely accepted compounds with promising use in synthetic chemistry. This review provides a comprehensive summary of the fundamental facts and principles of the chemistry of silyl cations, including reliable ways of their preparation as well as their physical and chemical properties. The striking features of silyl cations are their enormous electrophilicity and as such reactivity as super Lewis acids as well as fluorophilicity. Known applications rely on silyl cations as reactants, stoichiometric reagents, and promoters where the reaction success is based on their steady regeneration over the course of the reaction. Silyl cations can even be discrete catalysts, thereby opening the next chapter of their way into the toolbox of synthetic methodology.
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Affiliation(s)
- Hendrik F T Klare
- Institut für Chemie, Technische Universität Berlin, Strasse des 17 Juni 115, 10623 Berlin, Germany
| | - Lena Albers
- Institut für Chemie, Carl von Ossietzky Universität Oldenburg, Carl von Ossietzky-Strasse 9-11, 26129 Oldenburg, Germany
| | - Lars Süsse
- Institut für Chemie, Technische Universität Berlin, Strasse des 17 Juni 115, 10623 Berlin, Germany
| | - Sebastian Keess
- Institut für Chemie, Technische Universität Berlin, Strasse des 17 Juni 115, 10623 Berlin, Germany
| | - Thomas Müller
- Institut für Chemie, Carl von Ossietzky Universität Oldenburg, Carl von Ossietzky-Strasse 9-11, 26129 Oldenburg, Germany
| | - Martin Oestreich
- Institut für Chemie, Technische Universität Berlin, Strasse des 17 Juni 115, 10623 Berlin, Germany
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8
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Nelson HM, Popov S, Shao B, Bagdasarian AL, Wigman B. C–H Functionalization Reactions of Phenyl and Vinyl Carbocations Paired with Weakly Coordinating Anions. Synlett 2020. [DOI: 10.1055/s-0040-1707908] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Abstract
Carbocations have played a central role in the chemical sciences for over a century. In a synthetic setting, most methods utilize stabilized tricoordinate carbocations, while there are far fewer examples of reactions featuring nonstabilized dicoordinate cations. Here, we provide an overview of recent developments in the generation of high-energy carbocations mediated by weakly coordinating anions and the C–H insertion reactions of such carbocations. Moreover, we discuss mechanistic studies of these catalytic C–H insertion reactions aimed at furthering our understanding of the reactive nature of these rarely invoked cationic intermediates.1 Introduction2 Background: Phenyl Carbocations3 Silylium/Carborane-Catalyzed C–H Insertion Reactions of Phenyl Carbocations4 Silane-Fueled, Weakly Coordinating Anion-Catalyzed, Reductive C–H Insertion Reactions of Vinyl Carbocations5 C–H Insertion Reactivity of Vinyl Carbocations under Basic Conditions6 Conclusion and Outlook
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Affiliation(s)
- Hosea M. Nelson
- Department of Chemistry and Biochemistry, University of California
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9
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Denhof A, Olaru M, Lork E, Mebs S, Chęcińska L, Beckmann J. Silyl Cations Stabilized by Pincer Type Ligands with Adjustable Donor Atoms. Eur J Inorg Chem 2020. [DOI: 10.1002/ejic.202000800] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Andreas Denhof
- Institut für Anorganische Chemie und Kristallographie Universität Bremen Leobener Straße 7 28359 Bremen Germany
| | - Marian Olaru
- Institut für Anorganische Chemie und Kristallographie Universität Bremen Leobener Straße 7 28359 Bremen Germany
- Department of Chemistry Supramolecular Organic and Organometallic Chemistry Centre Babes‐Bolyai University 11 Arany Janos 400028 Cluj‐Napoca Romania
| | - Enno Lork
- Institut für Anorganische Chemie und Kristallographie Universität Bremen Leobener Straße 7 28359 Bremen Germany
| | - Stefan Mebs
- Institut für Experimentalphysik Freie Universität Berlin Arnimallee 14 14195 Berlin Germany
| | - Lilianna Chęcińska
- Institut für Anorganische Chemie und Kristallographie Universität Bremen Leobener Straße 7 28359 Bremen Germany
- Department of Theoretical and Structural Chemistry Faculty of Chemistry University of Lodz Pomorska 163/165 90‐236 Lodz Poland
| | - Jens Beckmann
- Institut für Anorganische Chemie und Kristallographie Universität Bremen Leobener Straße 7 28359 Bremen Germany
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10
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Vladimir A, Mikhail F, Amsharov K. Alumina-promoted oxodefluorination. RSC Adv 2020; 10:10879-10882. [PMID: 35492952 PMCID: PMC9050430 DOI: 10.1039/d0ra01369b] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2020] [Accepted: 03/06/2020] [Indexed: 12/28/2022] Open
Abstract
A simple protocol for the clean preparation of heterocyclic compounds containing dibenzofuran's core via oxodefluorination of fluoroarenes on activated γ-Al2O3 is reported. Alumina can be considered as a reliable oxygen source enabling one-pot substitution of fluorine atoms and yielding benzoannulated furan derivatives. The corresponding C–F bond activation is selective towards less stable C–Br/C–I and occurs under metal- and solvent-free conditions. A simple protocol for the clean preparation of heterocyclic compounds containing dibenzofuran's core via oxodefluorination of fluoroarenes on activated γ-Al2O3 is reported.![]()
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Affiliation(s)
- Akhmetov Vladimir
- Friedrich-Alexander University Erlangen-Nuernberg
- Department of Chemistry and Pharmacy
- Organic Chemistry II
- 91058 Erlangen
- Germany
| | - Feofanov Mikhail
- Friedrich-Alexander University Erlangen-Nuernberg
- Department of Chemistry and Pharmacy
- Organic Chemistry II
- 91058 Erlangen
- Germany
| | - Konstantin Amsharov
- Friedrich-Alexander University Erlangen-Nuernberg
- Department of Chemistry and Pharmacy
- Organic Chemistry II
- 91058 Erlangen
- Germany
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11
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Shao B, Bagdasarian AL, Popov S, Nelson HM. Intermolecular C–H Insertion of Aryl Cations. TRENDS IN CHEMISTRY 2019. [DOI: 10.1016/j.trechm.2019.10.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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12
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13
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Li X, Sun L, Zhang Q, Li S, Wang Y, Wei D, Zhang W, Lan Y. Mechanism and Substituent Effects of Benzene Arylation via a Phenyl Cation Strategy: A Density Functional Theory Study. ChemCatChem 2019. [DOI: 10.1002/cctc.201901120] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Affiliation(s)
- Xiaoyan Li
- College of ChemistryZhengzhou University 100 Science Avenue Zhengzhou, Henan Province 450001 P.R. China
| | - Ling Sun
- Basic Teaching DepartmentHuanghe Jiaotong University Jiaozuo, Henan Province 454950 P. R. China
| | - Qiaochu Zhang
- College of ChemistryZhengzhou University 100 Science Avenue Zhengzhou, Henan Province 450001 P.R. China
| | - Shijun Li
- College of ChemistryZhengzhou University 100 Science Avenue Zhengzhou, Henan Province 450001 P.R. China
| | - Yang Wang
- Department of Material and Chemical EngineeringZhengzhou University of Light Industry 136 Science Avenue Zhengzhou, Henan Province 450002 P.R. China
| | - Donghui Wei
- College of ChemistryZhengzhou University 100 Science Avenue Zhengzhou, Henan Province 450001 P.R. China
| | - Wenjing Zhang
- College of ChemistryZhengzhou University 100 Science Avenue Zhengzhou, Henan Province 450001 P.R. China
| | - Yu Lan
- College of ChemistryZhengzhou University 100 Science Avenue Zhengzhou, Henan Province 450001 P.R. China
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14
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15
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Uhl W, Tolzmann M, Willeke K, Honacker C, Hepp A, Layh M, Würthwein E. Silicon–Halogen Bond Activation in Mixed Si/Al Compounds and an Approach to Intramolecular Stabilized Silylium Ions. Eur J Inorg Chem 2019. [DOI: 10.1002/ejic.201801273] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Werner Uhl
- Institut für Anorganische und Analytische Chemie Universität Münster Corrensstraße 30 48149 Münster Germany
- Organisch‐Chemisches Institut and Center for Multiscale Theory and Computation (CMTC) Universität Münster Corrensstraße 40 48149 Münster Germany
| | - Michael Tolzmann
- Institut für Anorganische und Analytische Chemie Universität Münster Corrensstraße 30 48149 Münster Germany
| | - Kira Willeke
- Institut für Anorganische und Analytische Chemie Universität Münster Corrensstraße 30 48149 Münster Germany
| | - Christian Honacker
- Institut für Anorganische und Analytische Chemie Universität Münster Corrensstraße 30 48149 Münster Germany
| | - Alexander Hepp
- Institut für Anorganische und Analytische Chemie Universität Münster Corrensstraße 30 48149 Münster Germany
| | - Marcus Layh
- Institut für Anorganische und Analytische Chemie Universität Münster Corrensstraße 30 48149 Münster Germany
| | - Ernst‐Ulrich Würthwein
- Organisch‐Chemisches Institut and Center for Multiscale Theory and Computation (CMTC) Universität Münster Corrensstraße 40 48149 Münster Germany
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16
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Fisher SP, Tomich AW, Lovera SO, Kleinsasser JF, Guo J, Asay MJ, Nelson HM, Lavallo V. Nonclassical Applications of closo-Carborane Anions: From Main Group Chemistry and Catalysis to Energy Storage. Chem Rev 2019; 119:8262-8290. [PMID: 30707011 DOI: 10.1021/acs.chemrev.8b00551] [Citation(s) in RCA: 173] [Impact Index Per Article: 34.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Abstract
Classically closo-carborane anions, particularly [HCB11H11]- and [HCB9H9]-, and their derivatives have primarily been used as weakly coordinating anions to isolate reactive intermediates, platforms for stoichiometric and catalytic functionalization, counteranions for simple Lewis acid catalysis, and components of materials like liquid crystals. The aim of this article is to educate the reader on the contemporary nonclassical applications of these anions. Specifically, this review will cover new directions in main group catalysis utilized to achieve some of the most challenging catalytic reactions such as C-F, C-H, and C-C functionalizations that are difficult or impossible to realize with transition metals. In addition, the review will cover the utilization of the clusters as dianionic C σ-bound ligands for coordination chemistry, ligand substituents for coordination chemistry and advanced catalyst design, and covalently bound spectator substituents to stabilize radicals. Furthermore, their applications as solution-based and solid-state electrolytes for Li, Na, and Mg batteries will be discussed.
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Affiliation(s)
- S P Fisher
- Department of Chemistry , University of California, Riverside , 501 Big Springs Road , Riverside , California 92521 , United States
| | - A W Tomich
- Department of Chemistry , University of California, Riverside , 501 Big Springs Road , Riverside , California 92521 , United States
| | - S O Lovera
- Department of Chemistry , University of California, Riverside , 501 Big Springs Road , Riverside , California 92521 , United States
| | - J F Kleinsasser
- Department of Chemistry , University of California, Riverside , 501 Big Springs Road , Riverside , California 92521 , United States
| | - J Guo
- Department of Chemical and Environmental Engineering , University of California, Riverside , Riverside , California 92521 , United States
| | - M J Asay
- Department of Chemistry and Biochemistry , University of California , Los Angeles , California 90095 , United States
| | - H M Nelson
- Department of Chemistry and Biochemistry , University of California , Los Angeles , California 90095 , United States
| | - V Lavallo
- Department of Chemistry , University of California, Riverside , 501 Big Springs Road , Riverside , California 92521 , United States
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17
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Lu M, Allemann O, Xu J, Linden A, Baldridge KK, Siegel JS. Peraryl-X-onium ions of nitrogen and oxygen. Org Chem Front 2019. [DOI: 10.1039/c9qo00633h] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Carbon fluorine bond activation produces phenyl cations that are effective electrophiles for a new synthesis of tetraarylammonium and triaryloxonium ions. In parallel with diazonium salt decomposition a robust and general method to these underrepresented cations is demonstrated in this work.
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Affiliation(s)
- Mengsi Lu
- Health Science Platform
- Tianjin University
- 300072 Tianjin
- China
| | - Oliver Allemann
- Health Science Platform
- Tianjin University
- 300072 Tianjin
- China
- Department of Chemistry
| | - Jun Xu
- Health Science Platform
- Tianjin University
- 300072 Tianjin
- China
| | - Anthony Linden
- Department of Chemistry
- University of Zürich
- Zürich
- Switzerland
| | | | - Jay S. Siegel
- Health Science Platform
- Tianjin University
- 300072 Tianjin
- China
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18
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Bamford KL, Chitnis SS, Qu ZW, Stephan DW. Interactions of C−F Bonds with Hydridoboranes: Reduction, Borylation and Friedel-Crafts Alkylation. Chemistry 2018; 24:16014-16018. [DOI: 10.1002/chem.201804705] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2018] [Indexed: 01/05/2023]
Affiliation(s)
- Karlee L. Bamford
- Department of Chemistry; University of Toronto; 80 St. George St. Toronto ON M5S3H6 Canada
| | - Saurabh S. Chitnis
- Department of Chemistry; University of Toronto; 80 St. George St. Toronto ON M5S3H6 Canada
| | - Zheng-wang Qu
- Mulliken Center for Theoretical Chemistry; Institut für Physikalische und Theoretische Chemie; Universität Bonn; Beringstrasse 4 53115 Bonn Germany
| | - Douglas W. Stephan
- Department of Chemistry; University of Toronto; 80 St. George St. Toronto ON M5S3H6 Canada
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19
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Liu S, Roch LM, Allemann O, Xu J, Vanthuyne N, Baldridge KK, Siegel JS. 1,2,3- versus 1,2-Indeno Ring Fusions Influence Structure Property and Chirality of Corannulene Bowls. J Org Chem 2018; 83:3979-3986. [DOI: 10.1021/acs.joc.8b00320] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Shi Liu
- Health Science Platform, Tianjin University, 92 Weijin Road,
Nankai District, Tianjin 300072, PR China
| | - Loïc M. Roch
- Health Science Platform, Tianjin University, 92 Weijin Road,
Nankai District, Tianjin 300072, PR China
- Department of Chemistry, University of Zurich, Winterthurerstrasse 190, 8057 Zurich, Switzerland
| | - Oliver Allemann
- Health Science Platform, Tianjin University, 92 Weijin Road,
Nankai District, Tianjin 300072, PR China
- Department of Chemistry, University of Zurich, Winterthurerstrasse 190, 8057 Zurich, Switzerland
| | - Jun Xu
- Health Science Platform, Tianjin University, 92 Weijin Road,
Nankai District, Tianjin 300072, PR China
| | - Nicolas Vanthuyne
- Aix Marseille Univ, CNRS, Centrale Marseille, iSm2, Marseille, France
| | - Kim K. Baldridge
- Health Science Platform, Tianjin University, 92 Weijin Road,
Nankai District, Tianjin 300072, PR China
| | - Jay S. Siegel
- Health Science Platform, Tianjin University, 92 Weijin Road,
Nankai District, Tianjin 300072, PR China
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20
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Klare HFT. Catalytic C–H Arylation of Unactivated C–H Bonds by Silylium Ion-Promoted C(sp2)–F Bond Activation. ACS Catal 2017. [DOI: 10.1021/acscatal.7b02658] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Hendrik F. T. Klare
- Institut für Chemie, Technische Universität Berlin, Strasse des 17. Juni 115, 10623 Berlin, Germany
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21
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Shao B, Bagdasarian AL, Popov S, Nelson HM. Arylation of hydrocarbons enabled by organosilicon reagents and weakly coordinating anions. Science 2017; 355:1403-1407. [DOI: 10.1126/science.aam7975] [Citation(s) in RCA: 99] [Impact Index Per Article: 14.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2017] [Accepted: 03/09/2017] [Indexed: 11/02/2022]
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22
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Paul USD, Radius U. Ligand versus Complex: C−F and C−H Bond Activation of Polyfluoroaromatics at a Cyclic (Alkyl)(Amino)Carbene. Chemistry 2017; 23:3993-4009. [DOI: 10.1002/chem.201605950] [Citation(s) in RCA: 68] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2016] [Indexed: 11/08/2022]
Affiliation(s)
- Ursula S. D. Paul
- Institut für Anorganische Chemie; Julius-Maximilians-Universität Würzburg; Am Hubland 97074 Würzburg Germany
| | - Udo Radius
- Institut für Anorganische Chemie; Julius-Maximilians-Universität Würzburg; Am Hubland 97074 Würzburg Germany
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23
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Turner ZR. Chemically Non-Innocent Cyclic (Alkyl)(Amino)Carbenes: Ligand Rearrangement, C−H and C−F Bond Activation. Chemistry 2016; 22:11461-8. [DOI: 10.1002/chem.201602264] [Citation(s) in RCA: 70] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2016] [Indexed: 11/07/2022]
Affiliation(s)
- Zoë R. Turner
- Chemistry Research Laboratory; Department of Chemistry; University of Oxford; Oxford OX1 3TA UK
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24
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Suzuki N, Fujita T, Amsharov KY, Ichikawa J. Aluminium-mediated aromatic C–F bond activation: regioswitchable construction of benzene-fused triphenylene frameworks. Chem Commun (Camb) 2016; 52:12948-12951. [DOI: 10.1039/c6cc07199f] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
Aluminium-mediated selective synthesis of benzo[f]tetraphenes or benzo[g]chrysenes was achieved via aromatic C–F bond cleavage and regioselective C–C bond formation.
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Affiliation(s)
- Naoto Suzuki
- Division of Chemistry
- Pure and Applied Sciences
- University of Tsukuba
- Tsukuba
- Japan
| | - Takeshi Fujita
- Division of Chemistry
- Pure and Applied Sciences
- University of Tsukuba
- Tsukuba
- Japan
| | | | - Junji Ichikawa
- Division of Chemistry
- Pure and Applied Sciences
- University of Tsukuba
- Tsukuba
- Japan
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25
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Zhu J, Pérez M, Caputo CB, Stephan DW. Use of Trifluoromethyl Groups for Catalytic Benzylation and Alkylation with Subsequent Hydrodefluorination. Angew Chem Int Ed Engl 2015; 55:1417-21. [DOI: 10.1002/anie.201510494] [Citation(s) in RCA: 95] [Impact Index Per Article: 10.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2015] [Indexed: 11/05/2022]
Affiliation(s)
- Jiangtao Zhu
- Department of Chemistry; University of Toronto; 80 St. George Street Toronto Ontario M5S 3H6 Canada
| | - Manuel Pérez
- Department of Chemistry; University of Toronto; 80 St. George Street Toronto Ontario M5S 3H6 Canada
| | - Christopher B. Caputo
- Department of Chemistry; University of Toronto; 80 St. George Street Toronto Ontario M5S 3H6 Canada
| | - Douglas W. Stephan
- Department of Chemistry; University of Toronto; 80 St. George Street Toronto Ontario M5S 3H6 Canada
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26
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Zhu J, Pérez M, Caputo CB, Stephan DW. Use of Trifluoromethyl Groups for Catalytic Benzylation and Alkylation with Subsequent Hydrodefluorination. Angew Chem Int Ed Engl 2015. [DOI: 10.1002/ange.201510494] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Jiangtao Zhu
- Department of Chemistry; University of Toronto; 80 St. George Street Toronto Ontario M5S 3H6 Canada
| | - Manuel Pérez
- Department of Chemistry; University of Toronto; 80 St. George Street Toronto Ontario M5S 3H6 Canada
| | - Christopher B. Caputo
- Department of Chemistry; University of Toronto; 80 St. George Street Toronto Ontario M5S 3H6 Canada
| | - Douglas W. Stephan
- Department of Chemistry; University of Toronto; 80 St. George Street Toronto Ontario M5S 3H6 Canada
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