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Magné V, Lenk R, Mallet-Ladeira S, Maerten E, Madec D. Pentafluorophenyl Copper-Biarylsulfoxide Complexes: Synthesis and Photoreactivity. Molecules 2024; 29:3332. [PMID: 39064910 PMCID: PMC11280416 DOI: 10.3390/molecules29143332] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2024] [Revised: 07/05/2024] [Accepted: 07/12/2024] [Indexed: 07/28/2024] Open
Abstract
Pentafluorophenyl copper(I)-biarylsulfoxide complexes, existing as [Cu(C6F5)]4L2, both in solution and in the solid state, were prepared and thoroughly characterized. Subsequently, the photochemistry of the complexes was explored, showing inherent photoreactivity of the biarylsulfoxide moiety within the coordination sphere of the copper. Photoinduced cross-coupling reactions between the anthryl moiety of bis-anthracenylsulfoxide and pentafluorobenzene, and synthesis of Cu2O (cuprite), were demonstrated.
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Affiliation(s)
- Valentin Magné
- Laboratoire Hétérochimie Fondamentale et Appliquée (UMR 5069), Université de Toulouse, CNRS, 118 Route de Narbonne, CEDEX 09, 31062 Toulouse, France; (R.L.); (E.M.)
| | - Romaric Lenk
- Laboratoire Hétérochimie Fondamentale et Appliquée (UMR 5069), Université de Toulouse, CNRS, 118 Route de Narbonne, CEDEX 09, 31062 Toulouse, France; (R.L.); (E.M.)
| | - Sonia Mallet-Ladeira
- Institut de Chimie de Toulouse (UAR 2599), 118 Route de Narbonne, CEDEX 09, 31062 Toulouse, France;
| | - Eddy Maerten
- Laboratoire Hétérochimie Fondamentale et Appliquée (UMR 5069), Université de Toulouse, CNRS, 118 Route de Narbonne, CEDEX 09, 31062 Toulouse, France; (R.L.); (E.M.)
| | - David Madec
- Laboratoire Hétérochimie Fondamentale et Appliquée (UMR 5069), Université de Toulouse, CNRS, 118 Route de Narbonne, CEDEX 09, 31062 Toulouse, France; (R.L.); (E.M.)
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2
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Shudo H, Kuwayama M, Segawa Y, Yagi A, Itami K. Half-substituted fluorocycloparaphenylenes with high symmetry: synthesis, properties and derivatization to densely substituted carbon nanorings. Chem Commun (Camb) 2023; 59:13494-13497. [PMID: 37882201 DOI: 10.1039/d3cc04887j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2023]
Abstract
Fluorinated cycloparaphenylenes (FCPPs) have attracted attention as electron-accepting CPPs as well as strained fluoroarenes. Herein, we report the synthesis and properties of novel FCPPs; F16[8]CPP and F12[6]CPP. Furthermore, the derivatization of F16[8]CPP afforded a new carbon nanoring where sixteen pyrrole rings are densely substituted on the CPP framework.
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Affiliation(s)
- Hiroki Shudo
- Department of Chemistry, Graduate School of Science, Nagoya University, Chikusa, Nagoya 464-8602, Japan.
| | - Motonobu Kuwayama
- JST-ERATO, Itami Molecular Nanocarbon Project, Nagoya University, Chikusa, Nagoya 464-8602, Japan
| | - Yasutomo Segawa
- JST-ERATO, Itami Molecular Nanocarbon Project, Nagoya University, Chikusa, Nagoya 464-8602, Japan
- Institute for Molecular Science, Myodaiji, Okazaki, 444-8787, Japan
- The Graduate University for Advanced Studies, SOKENDAI, Myodaiji, Okazaki, 444-8787, Japan
| | - Akiko Yagi
- Department of Chemistry, Graduate School of Science, Nagoya University, Chikusa, Nagoya 464-8602, Japan.
- Institute of Transformative Bio-Molecules (WPI-ITbM), Nagoya University, Chikusa, Nagoya 464-8602, Japan
| | - Kenichiro Itami
- Department of Chemistry, Graduate School of Science, Nagoya University, Chikusa, Nagoya 464-8602, Japan.
- JST-ERATO, Itami Molecular Nanocarbon Project, Nagoya University, Chikusa, Nagoya 464-8602, Japan
- Institute of Transformative Bio-Molecules (WPI-ITbM), Nagoya University, Chikusa, Nagoya 464-8602, Japan
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3
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Rosero-Mafla MA, Zapata-Rivera J, Gimeno MC, Visbal R. Steric and Electronic Effects in N-Heterocyclic Carbene Gold(III) Complexes: An Experimental and Computational Study. Molecules 2022; 27:molecules27238289. [PMID: 36500397 PMCID: PMC9740751 DOI: 10.3390/molecules27238289] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2022] [Revised: 11/20/2022] [Accepted: 11/22/2022] [Indexed: 11/29/2022] Open
Abstract
A series of neutral acridine-based gold(III)-NHC complexes containing the pentafluorophenyl (-C6F5) group were synthesized. All of the complexes were fully characterized by analytical techniques. The square planar geometry around the gold center was confirmed by X-ray diffraction analysis for complexes 1 (Trichloro [1-methyl-3-(9-acridine)imidazol-2-ylidene]gold(III)) and 2 (Chloro-bis(pentafluorophenyl)[1-methyl-3-(9-acridine)imidazol-2-ylidene]gold(III)). In both cases, the acridine rings play a key role in the crystal packing of the solid structures by mean of π-π stacking interactions, with centroid-centroid and interplanar distances being similar to those found in other previously reported acridine-based Au(I)-NHC complexes. A different reactivity when using a bulkier N-heterocyclic carbene ligand such as 1,3-bis-(2,6-diisopropylphenyl)-2-imidazolidinylidene (SIPr) was observed. While the use of the acridine-based NHC ligand led to the expected organometallic gold(III) species, the steric hindrance of the bulky SIPr ligand led to the formation of the corresponding imidazolinium cation stabilized by the tetrakis(pentafluorophenyl)aurate(III) [Au(C6F5)4]- anion. Computational experiments were carried out in order to figure out the ground state electronic structure and the binding formation energy of the complexes and, therefore, to explain the observed reactivity.
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Affiliation(s)
- Miguel A. Rosero-Mafla
- Departamento de Química, Facultad de Ciencias Naturales y Exactas, Universidad del Valle, A.A. 25360, Cali 760042, Colombia
| | - Jhon Zapata-Rivera
- Departamento de Química, Facultad de Ciencias, Universidad de los Andes, Cra 1 No 18A—12, Bogotá 111711, Colombia
| | - M. Concepción Gimeno
- Departamento de Química Inorgánica, Instituto de Síntesis Química y Catálisis Homogénea (ISQCH), CSIC-Universidad de Zaragoza, 50009 Zaragoza, Spain
- Correspondence: (M.C.G.); (R.V.)
| | - Renso Visbal
- Departamento de Química, Facultad de Ciencias Naturales y Exactas, Universidad del Valle, A.A. 25360, Cali 760042, Colombia
- Centro de Excelencia en Nuevos Materiales (CENM), Universidad del Valle, A.A. 25360, Cali 760031, Colombia
- Correspondence: (M.C.G.); (R.V.)
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4
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Shetgaonkar SE, Raju A, China H, Takenaga N, Dohi T, Singh FV. Non-Palladium-Catalyzed Oxidative Coupling Reactions Using Hypervalent Iodine Reagents. Front Chem 2022; 10:909250. [PMID: 35844643 PMCID: PMC9283985 DOI: 10.3389/fchem.2022.909250] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2022] [Accepted: 05/20/2022] [Indexed: 01/25/2023] Open
Abstract
Transition metal-catalyzed direct oxidative coupling reactions via C–H bond activation have emerged as a straightforward strategy for the construction of complex molecules in organic synthesis. The direct transformation of C–H bonds into carbon–carbon and carbon–heteroatom bonds renders the requirement of prefunctionalization of starting materials and, therefore, represents a more efficient alternative to the traditional cross-coupling reactions. The key to the unprecedented progress made in this area has been the identification of an appropriate oxidant that facilitates oxidation and provides heteroatom ligands at the metal center. In this context, hypervalent iodine compounds have evolved as mainstream reagents particularly because of their excellent oxidizing nature, high electrophilicity, and versatile reactivity. They are environmentally benign reagents, stable, non-toxic, and relatively cheaper than inorganic oxidants. For many years, palladium catalysis has dominated these oxidative coupling reactions, but eventually, other transition metal catalysts such as gold, copper, platinum, iron, etc. were found to be promising alternate catalysts for facilitating such reactions. This review article critically summarizes the recent developments in non-palladium-catalyzed oxidative coupling reactions mediated by hypervalent iodine (III) reagents with significant emphasis on understanding the mechanistic aspects in detail.
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Affiliation(s)
| | - Aleena Raju
- Chemistry Division, School of Advanced Science, VIT University, Chennai, India
| | - Hideyasu China
- Department of Medical Bioscience, Nagahama Institute of Bio-Science and Technology, Nagahama, Japan
| | | | - Toshifumi Dohi
- College of Pharmaceutical Sciences, Ritsumeikan University, Kusatsu, Japan
- *Correspondence: Toshifumi Dohi, ; Fateh V. Singh,
| | - Fateh V. Singh
- Chemistry Division, School of Advanced Science, VIT University, Chennai, India
- *Correspondence: Toshifumi Dohi, ; Fateh V. Singh,
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5
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Bonsignore R, Thomas SR, Rigoulet M, Jandl C, Pöthig A, Bourissou D, Barone G, Casini A. C-C Cross-Couplings from a Cyclometalated Au(III) C ∧ N Complex: Mechanistic Insights and Synthetic Developments. Chemistry 2021; 27:14322-14334. [PMID: 34310783 PMCID: PMC8597034 DOI: 10.1002/chem.202102668] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2021] [Indexed: 12/11/2022]
Abstract
In recent years, the reactivity of gold complexes was shown to extend well beyond π-activation and to hold promises to achieve selective cross-couplings in several C-C and C-E (E=heteroatom) bond forming reactions. Here, with the aim of exploiting new organometallic species for cross-coupling reactions, we report on the Au(III)-mediated C(sp2 )-C(sp) occurring upon reaction of the cyclometalated complex [Au(CCH2 N)Cl2 ] (1, CCH2 N=2-benzylpyridine) with AgPhCC. The reaction progress has been monitored by NMR spectroscopy, demonstrating the involvement of a number of key intermediates, whose structures have been unambiguously ascertained through 1D and 2D NMR analyses (1 H, 13 C, 1 H-1 H COSY, 1 H-13 C HSQC and 1 H-13 C HMBC) as well as by HR-ESI-MS and X-ray diffraction studies. Furthermore, crystallographic studies have serendipitously resulted in the authentication of zwitterionic Au(I) complexes as side-products arising from cyclization of the coupling product in the coordination sphere of gold. The experimental work has been paralleled and complemented by DFT calculations of the reaction profiles, providing valuable insight into the structure and energetics of the key intermediates and transition states, as well as on the coordination sphere of gold along the whole process. Of note, the broader scope of the cross-coupling at the Au(III) CCH2 N centre has also been demonstrated studying the reaction of 1 with C(sp2 )-based nucleophiles, namely vinyl and heteroaryl tin and zinc reagents. These reactions stand as rare examples of C(sp2 )-C(sp2 ) cross-couplings at Au(III).
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Affiliation(s)
- Riccardo Bonsignore
- Chair of Medicinal and Bioinorganic ChemistryDepartment of ChemistryTechnical University of MunichLichtenbergstr. 485748Garching b. MünchenGermany
| | - Sophie R. Thomas
- Chair of Medicinal and Bioinorganic ChemistryDepartment of ChemistryTechnical University of MunichLichtenbergstr. 485748Garching b. MünchenGermany
- School of ChemistryCardiff UniversityMain BuildingPark PlaceCF10 3ATCardiffUK
| | - Mathilde Rigoulet
- CNRS/Université Paul SabatierLaboratoire Hétérochimie Fondamentale et Appliquée (LHFA, UMR 5069)118 Route de Narbonne31062Toulouse Cedex 09France
| | - Christian Jandl
- Catalysis Research Center & Department of ChemistryTechnical University of MunichErnst-Otto-Fischer Str. 185748Garching b. MünchenGermany
| | - Alexander Pöthig
- Catalysis Research Center & Department of ChemistryTechnical University of MunichErnst-Otto-Fischer Str. 185748Garching b. MünchenGermany
| | - Didier Bourissou
- CNRS/Université Paul SabatierLaboratoire Hétérochimie Fondamentale et Appliquée (LHFA, UMR 5069)118 Route de Narbonne31062Toulouse Cedex 09France
| | - Giampaolo Barone
- Dipartimento di Scienze e Tecnologie Biologiche, Chimiche e FarmaceuticheUniversità degli Studi di PalermoViale delle Scienze, Edificio 1790128PalermoItaly
| | - Angela Casini
- Chair of Medicinal and Bioinorganic ChemistryDepartment of ChemistryTechnical University of MunichLichtenbergstr. 485748Garching b. MünchenGermany
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6
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Moseev TD, Varaksin MV, Gorlov DA, Charushin VN, Chupakhin ON. Recent advances in the functionalization of polyfluoro(aza)aromatics via C-C coupling strategies. Org Biomol Chem 2021; 19:4429-4459. [PMID: 33908555 DOI: 10.1039/d1ob00472g] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Polyfluoro(aza)aromatic compounds are of interest in various fields of practical applications, such as medicinal and agrochemistry, materials science and advanced technologies. The C-C coupling reactions are known to be a promising synthetic tool to create challenging fluorinated molecules of diverse architectures. In this review, we have summarized the recent advances in the functionalization of polyfluoro(aza)aromatics via both transition metal-catalyzed and metal-free C-C coupling reactions for the period from 2006 to the beginning of 2021. Also, mechanistic features for chemical transformations of fluoroarene scaffolds and new opportunities for practical applications of the designed fluorinated molecules have been highlighted.
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Affiliation(s)
- Timofey D Moseev
- Ural Federal University, 19 Mira Str., 620002 Ekaterinburg, Russia.
| | - Mikhail V Varaksin
- Ural Federal University, 19 Mira Str., 620002 Ekaterinburg, Russia. and Postovsky Institute of Organic Synthesis, Ural Branch of the Russian Academy of Sciences, 22 S. Kovalevskaya Str., 620990 Ekaterinburg, Russia.
| | - Denis A Gorlov
- Moscow State University, 1 Leninskie Gory, 119991 Moscow, Russia
| | - Valery N Charushin
- Ural Federal University, 19 Mira Str., 620002 Ekaterinburg, Russia. and Postovsky Institute of Organic Synthesis, Ural Branch of the Russian Academy of Sciences, 22 S. Kovalevskaya Str., 620990 Ekaterinburg, Russia.
| | - Oleg N Chupakhin
- Ural Federal University, 19 Mira Str., 620002 Ekaterinburg, Russia. and Postovsky Institute of Organic Synthesis, Ural Branch of the Russian Academy of Sciences, 22 S. Kovalevskaya Str., 620990 Ekaterinburg, Russia.
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7
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Fricke C, Reid WB, Schoenebeck F. A Review on Oxidative Gold‐Catalyzed C‐H Arylation of Arenes – Challenges and Opportunities. European J Org Chem 2020. [DOI: 10.1002/ejoc.202000856] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Christoph Fricke
- Institute of Organic Chemistry RWTH Aachen University Landoltweg 1 52074 Aachen Germany
| | - William B. Reid
- Institute of Organic Chemistry RWTH Aachen University Landoltweg 1 52074 Aachen Germany
| | - Franziska Schoenebeck
- Institute of Organic Chemistry RWTH Aachen University Landoltweg 1 52074 Aachen Germany
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8
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Rocchigiani L, Bochmann M. Recent Advances in Gold(III) Chemistry: Structure, Bonding, Reactivity, and Role in Homogeneous Catalysis. Chem Rev 2020; 121:8364-8451. [DOI: 10.1021/acs.chemrev.0c00552] [Citation(s) in RCA: 64] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Affiliation(s)
- Luca Rocchigiani
- School of Chemistry, University of East Anglia, Norwich Research Park, Norwich NR47TJ, United Kingdom
| | - Manfred Bochmann
- School of Chemistry, University of East Anglia, Norwich Research Park, Norwich NR47TJ, United Kingdom
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9
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Bonsignore R, Thomas SR, Klooster WT, Coles SJ, Jenkins RL, Bourissou D, Barone G, Casini A. Carbon-Phosphorus Coupling from C^N Cyclometalated Au III Complexes. Chemistry 2020; 26:4226-4231. [PMID: 31994237 PMCID: PMC7187188 DOI: 10.1002/chem.201905392] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2019] [Revised: 01/10/2020] [Indexed: 12/20/2022]
Abstract
With the aim of exploiting new organometallic species for cross-coupling reactions, we report here on the AuIII -mediated Caryl -P bond formation occurring upon reaction of C^N cyclometalated AuIII complexes with phosphines. The [Au(C^N)Cl2 ] complex 1 featuring the bidentate 2-benzoylpyridine (CCO N) scaffold was found to react with PTA (1,3,5-triaza-7-phosphaadamantane) under mild conditions, including in water, to afford the corresponding phosphonium 5 through C-P reductive elimination. A mechanism is proposed for the title reaction based on in situ 31 P{1 H} NMR and HR-ESI-MS analyses combined with DFT calculations. The C-P coupling has been generalized to other C^N cyclometalated AuIII complexes and other tertiary phosphines. Overall, this work provides new insights into the reactivity of cyclometalated AuIII compounds and establishes initial structure-activity relationships to develop AuIII -mediated C-P cross-coupling reactions.
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Affiliation(s)
- Riccardo Bonsignore
- School of ChemistryCardiff UniversityMain Building, Park PlaceCF10 3ATCardiffUK
| | - Sophie R. Thomas
- School of ChemistryCardiff UniversityMain Building, Park PlaceCF10 3ATCardiffUK
| | - Wim T. Klooster
- School of ChemistryUniversity of SouthamptonSouthamptonSO17 1BJUK
| | - Simon J. Coles
- School of ChemistryUniversity of SouthamptonSouthamptonSO17 1BJUK
| | - Robert L. Jenkins
- School of ChemistryCardiff UniversityMain Building, Park PlaceCF10 3ATCardiffUK
| | - Didier Bourissou
- CNRS/Université Paul SabatierLaboratoire Hétérochimie Fondamentale et Appliquée (LHFA, UMR 5069)118 Route de Narbonne31062Toulouse Cedex 09France
| | - Giampaolo Barone
- Dipartimento di Scienze e Tecnologie Biologiche, Chimiche e FarmaceuticheUniversità degli Studi di PalermoViale delle Scienze, Edificio 1790128PalermoItaly
| | - Angela Casini
- School of ChemistryCardiff UniversityMain Building, Park PlaceCF10 3ATCardiffUK
- Department of ChemistryTechnical University of MunichLichtenbergstr. 485747GarchingGermany
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10
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Medina-Mercado I, Asomoza-Solís EO, Martínez-González E, Ugalde-Saldívar VM, Ledesma-Olvera LG, Barquera-Lozada JE, Gómez-Vidales V, Barroso-Flores J, Frontana-Uribe BA, Porcel S. Ascorbic Acid as an Aryl Radical Inducer in the Gold-Mediated Arylation of Indoles with Aryldiazonium Chlorides. Chemistry 2020; 26:634-642. [PMID: 31621965 DOI: 10.1002/chem.201904413] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2019] [Indexed: 12/22/2022]
Abstract
In recent years interest in the development of protocols that facilitate the oxidative addition of gold to access mild cross-coupling processes mediated by this metal has increased. In this context, we report herein that ascorbic acid, a natural and readily accessible antioxidant, can be used to accelerate the oxidative addition of aryldiazonium chlorides onto AuI . The aryl-AuIII species generated in this way, has been used to prepare 3-arylindoles in a one-pot protocol starting from anilines and para-, meta-, and ortho- substituted aryldiazonium chlorides. The mechanism underlying the oxidative addition has been examined in detail based on EPR analyses, cyclic voltammetry, and DFT calculations. Interestingly, we have found that in this protocol, the chloride atom induces the AuII /AuIII oxidation step.
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Affiliation(s)
- Ignacio Medina-Mercado
- Instituto de Química, Universidad Nacional Autónoma de México, Circuito Exterior s/n, Ciudad Universitaria, Cd. Mx., 04510, México
| | - Eric Omar Asomoza-Solís
- Instituto de Química, Universidad Nacional Autónoma de México, Circuito Exterior s/n, Ciudad Universitaria, Cd. Mx., 04510, México
| | - Eduardo Martínez-González
- Facultad de Química, Universidad Nacional Autónoma de México, Av. Universidad 3000, Coyoacán, Cd. Mx., 04510, México
| | - Victor Manuel Ugalde-Saldívar
- Facultad de Química, Universidad Nacional Autónoma de México, Av. Universidad 3000, Coyoacán, Cd. Mx., 04510, México
| | - Lydia Gabriela Ledesma-Olvera
- Instituto de Química, Universidad Nacional Autónoma de México, Circuito Exterior s/n, Ciudad Universitaria, Cd. Mx., 04510, México
| | - José Enrique Barquera-Lozada
- Instituto de Química, Universidad Nacional Autónoma de México, Circuito Exterior s/n, Ciudad Universitaria, Cd. Mx., 04510, México
| | - Virginia Gómez-Vidales
- Instituto de Química, Universidad Nacional Autónoma de México, Circuito Exterior s/n, Ciudad Universitaria, Cd. Mx., 04510, México
| | - Joaquín Barroso-Flores
- Instituto de Química, Universidad Nacional Autónoma de México, Circuito Exterior s/n, Ciudad Universitaria, Cd. Mx., 04510, México.,Centro Conjunto de Investigación en Química Sustentable, UAEM-UNAM, Carretera Toluca-Atlacomulco Km 14.5, C.P. 50200, Toluca, Estado de México, México
| | - Bernardo A Frontana-Uribe
- Instituto de Química, Universidad Nacional Autónoma de México, Circuito Exterior s/n, Ciudad Universitaria, Cd. Mx., 04510, México.,Centro Conjunto de Investigación en Química Sustentable, UAEM-UNAM, Carretera Toluca-Atlacomulco Km 14.5, C.P. 50200, Toluca, Estado de México, México
| | - Susana Porcel
- Instituto de Química, Universidad Nacional Autónoma de México, Circuito Exterior s/n, Ciudad Universitaria, Cd. Mx., 04510, México
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11
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Sava A, Kegyes KT, Popuş BT, Dan BC, Silvestru C, Raţ CI. Halogen bonding between entirely negative fluorine atoms? Evidence from the crystal packing of some gold( i) and gold( iii) complexes with extensively fluorinated m-terphenyl ligands and triphenylphosphane. CrystEngComm 2020. [DOI: 10.1039/d0ce00671h] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Intermolecular interactions between fluorine atoms, analogous to halogen bonding, are able to drive the solid-state arrangement of molecules.
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Affiliation(s)
- Alexandru Sava
- Supramolecular Organic and Organometallic Chemistry Centre
- Chemistry Department
- Faculty of Chemistry and Chemical Engineering
- Babeş-Bolyai University
- Cluj-Napoca RO-400028
| | - Krisztina T. Kegyes
- Supramolecular Organic and Organometallic Chemistry Centre
- Chemistry Department
- Faculty of Chemistry and Chemical Engineering
- Babeş-Bolyai University
- Cluj-Napoca RO-400028
| | - Bianca T. Popuş
- Supramolecular Organic and Organometallic Chemistry Centre
- Chemistry Department
- Faculty of Chemistry and Chemical Engineering
- Babeş-Bolyai University
- Cluj-Napoca RO-400028
| | - Bernadette C. Dan
- Supramolecular Organic and Organometallic Chemistry Centre
- Chemistry Department
- Faculty of Chemistry and Chemical Engineering
- Babeş-Bolyai University
- Cluj-Napoca RO-400028
| | - Cristian Silvestru
- Supramolecular Organic and Organometallic Chemistry Centre
- Chemistry Department
- Faculty of Chemistry and Chemical Engineering
- Babeş-Bolyai University
- Cluj-Napoca RO-400028
| | - Ciprian I. Raţ
- Supramolecular Organic and Organometallic Chemistry Centre
- Chemistry Department
- Faculty of Chemistry and Chemical Engineering
- Babeş-Bolyai University
- Cluj-Napoca RO-400028
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12
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Nabavizadeh SM, Niroomand Hosseini F, Park C, Wu G, Abu-Omar MM. Discovery and mechanistic investigation of Pt-catalyzed oxidative homocoupling of benzene with PhI(OAc)2. Dalton Trans 2020; 49:2477-2486. [DOI: 10.1039/c9dt04261j] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
Pt-catalyzed direct coupling of benzene to biphenyl using PhI(OAc)2 as an oxidant in the absence of any acid as a co-solvent or co-catalyst was mechanistically investigated.
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Affiliation(s)
- S. Masoud Nabavizadeh
- Professor Rashidi Laboratory of Organometallic Chemistry
- Department of Chemistry
- College of Sciences
- Shiraz University
- Iran
| | | | - Chan Park
- Department of Chemistry and Biochemistry
- University of California
- Santa Barbara
- Santa Barbara
- USA
| | - Guang Wu
- Department of Chemistry and Biochemistry
- University of California
- Santa Barbara
- Santa Barbara
- USA
| | - Mahdi M. Abu-Omar
- Department of Chemistry and Biochemistry
- University of California
- Santa Barbara
- Santa Barbara
- USA
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13
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Rodriguez J, Adet N, Saffon-Merceron N, Bourissou D. Au(i)/Au(iii)-Catalyzed C–N coupling. Chem Commun (Camb) 2020; 56:94-97. [DOI: 10.1039/c9cc07666b] [Citation(s) in RCA: 58] [Impact Index Per Article: 14.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Gold-catalyzed coupling of aryl iodides and amines via a ligand-enabled 2e redox cycle.
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Affiliation(s)
- Jessica Rodriguez
- CNRS/Université Paul Sabatier
- Laboratoire Hétérochimie Fondamentale et Appliquée (LHFA, UMR 5069)
- 31062 Toulouse Cedex 09
- France
| | - Nicolas Adet
- CNRS/Université Paul Sabatier
- Laboratoire Hétérochimie Fondamentale et Appliquée (LHFA, UMR 5069)
- 31062 Toulouse Cedex 09
- France
| | | | - Didier Bourissou
- CNRS/Université Paul Sabatier
- Laboratoire Hétérochimie Fondamentale et Appliquée (LHFA, UMR 5069)
- 31062 Toulouse Cedex 09
- France
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14
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Hofer M, de Haro T, Gómez-Bengoa E, Genoux A, Nevado C. Oxidant speciation and anionic ligand effects in the gold-catalyzed oxidative coupling of arenes and alkynes. Chem Sci 2019; 10:8411-8420. [PMID: 31803420 PMCID: PMC6844217 DOI: 10.1039/c9sc02372k] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2019] [Accepted: 07/09/2019] [Indexed: 11/23/2022] Open
Abstract
The mechanism of the gold-catalyzed oxidative cross-coupling of arenes and alkynes has been studied in detail combining stoichiometric experiments with putative reaction intermediates and DFT calculations. Our data suggest that ligand exchange between the alkyne, the Au(i)-catalyst and the hypervalent iodine reagent is responsible for the formation of both an Au(i)-acetylide complex and a more reactive "non-symmetric" I(iii) oxidant responsible for the crucial Au(i)/Au(iii) turnover. Further, the reactivity of the in situ generated Au(iii)-acetylide complex is governed by the nature of the anionic ligands transferred by the I(iii) oxidant: while halogen ligands remain unreactive, acetato ligands are efficiently displaced by the arene to yield the observed Csp2-Csp cross-coupling products through an irreversible reductive elimination step. Finally, the nature of competitive processes and catalyst deactivation pathways has also been unraveled. This detailed investigation provides insights not only on the specific features of the species involved in oxidative gold-catalyzed cross couplings but also highlights the importance of both ancillary and anionic ligands in the reactivity of the key Au(iii) intermediates.
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Affiliation(s)
- Manuel Hofer
- Department of Chemistry , University of Zürich , Winterthurerstrasse 190 , Zürich , CH-8057 , Switzerland .
| | - Teresa de Haro
- Department of Chemistry , University of Zürich , Winterthurerstrasse 190 , Zürich , CH-8057 , Switzerland .
| | - Enrique Gómez-Bengoa
- Departamento de Química Orgánica I , Universidad del Pais Vasco , Apdo 1072 , CP-20080 Donostia-San Sebastián , Spain
| | - Alexandre Genoux
- Department of Chemistry , University of Zürich , Winterthurerstrasse 190 , Zürich , CH-8057 , Switzerland .
| | - Cristina Nevado
- Department of Chemistry , University of Zürich , Winterthurerstrasse 190 , Zürich , CH-8057 , Switzerland .
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15
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Affiliation(s)
- Mohammad Albayer
- Department of Chemistry and Physics, La Trobe Institute for Molecular Science, La Trobe University, Melbourne, Victoria, Australia
| | - Jason L. Dutton
- Department of Chemistry and Physics, La Trobe Institute for Molecular Science, La Trobe University, Melbourne, Victoria, Australia
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16
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Corbo R, Dutton JL. Weiss’ Reagents: A synthetically useful class of iodine(III) coordination compounds. Coord Chem Rev 2018. [DOI: 10.1016/j.ccr.2017.10.018] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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17
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Akram MO, Banerjee S, Saswade SS, Bedi V, Patil NT. Oxidant-free oxidative gold catalysis: the new paradigm in cross-coupling reactions. Chem Commun (Camb) 2018; 54:11069-11083. [DOI: 10.1039/c8cc05601c] [Citation(s) in RCA: 98] [Impact Index Per Article: 16.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
The construction of C–C and C–X (X = hetero atom) bonds is the core aspect for the assembly of molecules. This feature article critically presents an overview of all the redox neutral cross-coupling reactions enabled by gold catalysis, which we believe would stimulate further research activities in this promising area.
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Affiliation(s)
- Manjur O. Akram
- Division of Organic Chemistry
- CSIR-National Chemical Laboratory
- Dr Homi Bhabha Road
- Pune 411 008
- India
| | - Somsuvra Banerjee
- Division of Organic Chemistry
- CSIR-National Chemical Laboratory
- Dr Homi Bhabha Road
- Pune 411 008
- India
| | - Sagar S. Saswade
- Department of Chemistry
- Indian Institute of Science Education and Research Bhopal
- Bhopal – 462 066
- India
| | - Vaibhav Bedi
- Department of Chemistry
- Indian Institute of Science Education and Research Bhopal
- Bhopal – 462 066
- India
| | - Nitin T. Patil
- Department of Chemistry
- Indian Institute of Science Education and Research Bhopal
- Bhopal – 462 066
- India
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18
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Kang K, Liu S, Xu T, Wang D, Leng X, Bai R, Lan Y, Shen Q. C(sp2)–C(sp2) Reductive Elimination from Well-Defined Diarylgold(III) Complexes. Organometallics 2017. [DOI: 10.1021/acs.organomet.7b00588] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Kai Kang
- Key
Laboratory of Organofluorine Chemistry, Shanghai Institute of Organic
Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 345 Lingling Road, Shanghai 200032, People’s Republic of China
| | - Shuanshuan Liu
- Biotechnology
and Pharmaceutical Engineering, Nanjing Tech University, Nanjing, Jiangsu Province 210009, People’s Republic of China
| | - Ting Xu
- School
of Chemistry and Chemical Engineering, Chongqing University, Chongqing 400030, People’s Republic of China
| | - Decai Wang
- Biotechnology
and Pharmaceutical Engineering, Nanjing Tech University, Nanjing, Jiangsu Province 210009, People’s Republic of China
| | - Xuebing Leng
- Key
Laboratory of Organofluorine Chemistry, Shanghai Institute of Organic
Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 345 Lingling Road, Shanghai 200032, People’s Republic of China
| | - Ruopeng Bai
- School
of Chemistry and Chemical Engineering, Chongqing University, Chongqing 400030, People’s Republic of China
| | - Yu Lan
- School
of Chemistry and Chemical Engineering, Chongqing University, Chongqing 400030, People’s Republic of China
| | - Qilong Shen
- Key
Laboratory of Organofluorine Chemistry, Shanghai Institute of Organic
Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 345 Lingling Road, Shanghai 200032, People’s Republic of China
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19
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Schmid J, Frey W, Peters R. Polynuclear Enantiopure Salen–Mesoionic Carbene Hybrid Complexes. Organometallics 2017. [DOI: 10.1021/acs.organomet.7b00729] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Affiliation(s)
- Juliane Schmid
- Institut für Organische Chemie, Universität Stuttgart, Pfaffenwaldring 55, D-70569 Stuttgart, Germany
| | - Wolfgang Frey
- Institut für Organische Chemie, Universität Stuttgart, Pfaffenwaldring 55, D-70569 Stuttgart, Germany
| | - René Peters
- Institut für Organische Chemie, Universität Stuttgart, Pfaffenwaldring 55, D-70569 Stuttgart, Germany
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20
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Akram MO, Mali PS, Patil NT. Cross-Coupling Reactions of Aryldiazonium Salts with Allylsilanes under Merged Gold/Visible-Light Photoredox Catalysis. Org Lett 2017; 19:3075-3078. [DOI: 10.1021/acs.orglett.7b01148] [Citation(s) in RCA: 48] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Affiliation(s)
- Manjur O. Akram
- Division
of Organic Chemistry, CSIR-National Chemical Laboratory, Dr. Homi Bhabha Road, Pune 411 008, India
- Academy of Scientific and Innovative Research (AcSIR), New Delhi 110 025, India
| | - Pramod S. Mali
- Division
of Organic Chemistry, CSIR-National Chemical Laboratory, Dr. Homi Bhabha Road, Pune 411 008, India
| | - Nitin T. Patil
- Division
of Organic Chemistry, CSIR-National Chemical Laboratory, Dr. Homi Bhabha Road, Pune 411 008, India
- Academy of Scientific and Innovative Research (AcSIR), New Delhi 110 025, India
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21
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Rekhroukh F, Blons C, Estévez L, Mallet-Ladeira S, Miqueu K, Amgoune A, Bourissou D. Gold(iii)-arene complexes by insertion of olefins into gold-aryl bonds. Chem Sci 2017; 8:4539-4545. [PMID: 28660067 PMCID: PMC5472032 DOI: 10.1039/c7sc00145b] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2017] [Accepted: 04/16/2017] [Indexed: 01/22/2023] Open
Abstract
The synthesis and characterization of the first gold(iii)-arene complexes are described. Well-defined (P,C)-cyclometalated gold(iii)-aryl complexes were prepared and characterized by NMR spectroscopy. These complexes swiftly and cleanly reacted with norbornene and ethylene to provide cationic gold(iii)-alkyl complexes, in which the remote phenyl ring was η2-coordinated to gold. The interaction between the aromatic ring and the gold(iii) center was thoroughly analyzed by NMR spectroscopy, X-ray diffraction, and DFT calculations. The π-arene coordination was found to significantly influence the stability and reactivity of low coordinated gold(iii) alkyl species.
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Affiliation(s)
- Feriel Rekhroukh
- Université de Toulouse , UPS , 118 route de Narbonne , 31062 Toulouse , France . ;
- CNRS , LHFA , UMR 5069 , F-31062 Toulouse , France
| | - Charlie Blons
- Université de Toulouse , UPS , 118 route de Narbonne , 31062 Toulouse , France . ;
- CNRS , LHFA , UMR 5069 , F-31062 Toulouse , France
| | - Laura Estévez
- CNRS , Univ Pau & Pays Adour , Institut des Sciences Analytiques et de Physico-Chimie pour l'environnement et les Matériaux , UMR 5254 , Pau , 64000 , France .
| | - Sonia Mallet-Ladeira
- Université Paul Sabatier , Institut de Chimie de Toulouse (FR 2599) , 118 route de Narbonne , 31062 Toulouse Cedex 9 , France
| | - Karinne Miqueu
- CNRS , Univ Pau & Pays Adour , Institut des Sciences Analytiques et de Physico-Chimie pour l'environnement et les Matériaux , UMR 5254 , Pau , 64000 , France .
| | - Abderrahmane Amgoune
- Université de Toulouse , UPS , 118 route de Narbonne , 31062 Toulouse , France . ;
- CNRS , LHFA , UMR 5069 , F-31062 Toulouse , France
| | - Didier Bourissou
- Université de Toulouse , UPS , 118 route de Narbonne , 31062 Toulouse , France . ;
- CNRS , LHFA , UMR 5069 , F-31062 Toulouse , France
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22
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Hypervalent Iodine Reagents in High Valent Transition Metal Chemistry. Molecules 2017; 22:molecules22050780. [PMID: 28498333 PMCID: PMC6154742 DOI: 10.3390/molecules22050780] [Citation(s) in RCA: 45] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2017] [Revised: 05/06/2017] [Accepted: 05/08/2017] [Indexed: 01/12/2023] Open
Abstract
Over the last 20 years, high valent metal complexes have evolved from mere curiosities to being at the forefront of modern catalytic method development. This approach has enabled transformations complimentary to those possible via traditional manifolds, most prominently carbon-heteroatom bond formation. Key to the advancement of this chemistry has been the identification of oxidants that are capable of accessing these high oxidation state complexes. The oxidant has to be both powerful enough to achieve the desired oxidation as well as provide heteroatom ligands for transfer to the metal center; these heteroatoms are often subsequently transferred to the substrate via reductive elimination. Herein we will review the central role that hypervalent iodine reagents have played in this aspect, providing an ideal balance of versatile reactivity, heteroatom ligands, and mild reaction conditions. Furthermore, these reagents are environmentally benign, non-toxic, and relatively inexpensive compared to other inorganic oxidants. We will cover advancements in both catalysis and high valent complex isolation with a key focus on the subtle effects that oxidant choice can have on reaction outcome, as well as limitations of current reagents.
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23
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Albayer M, Dutton JL. Reactions of Trivalent Iodine Reagents with Classic Iridium and Rhodium Complexes. Aust J Chem 2017. [DOI: 10.1071/ch17173] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
In this work, the reactions of iodine(iii) reagents (PhI(L)2: L = pyridine, acetate (OAc−), triflate (OTf−)) with iridium(i) and rhodium(i) complexes (Vaskas’s compound, Wilkinson’s catalyst, and bis[bis(diphenylphosphino)ethane]rhodium(i) triflate) are reported. In all cases, the reactions resulted in two-electron oxidation of the metal complexes. Mixtures of products were observed in the reactions of Iiii reagents with Vaska’s compound and Wilkinson’s catalyst via ligand exchange and anion scrambling. In the case of reacting Iiii reagents with chelating ligand-containing bis[bis(diphenylphosphino)ethane]rhodium(i) triflate, no scrambling was observed.
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24
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Corrie TJA, Ball LT, Russell CA, Lloyd-Jones GC. Au-Catalyzed Biaryl Coupling To Generate 5- to 9-Membered Rings: Turnover-Limiting Reductive Elimination versus π-Complexation. J Am Chem Soc 2016; 139:245-254. [DOI: 10.1021/jacs.6b10018] [Citation(s) in RCA: 101] [Impact Index Per Article: 12.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Tom J. A. Corrie
- EaStChem, University of Edinburgh, Joseph Black Building, David Brewster Road, Edinburgh EH9 3FJ, U.K
| | - Liam T. Ball
- EaStChem, University of Edinburgh, Joseph Black Building, David Brewster Road, Edinburgh EH9 3FJ, U.K
- School
of Chemistry, University of Bristol, Cantock’s Close, Bristol BS8 1TS, U.K
| | | | - Guy C. Lloyd-Jones
- EaStChem, University of Edinburgh, Joseph Black Building, David Brewster Road, Edinburgh EH9 3FJ, U.K
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25
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Hofer M, Genoux A, Kumar R, Nevado C. Gold-Catalyzed Direct Oxidative Arylation with Boron Coupling Partners. Angew Chem Int Ed Engl 2016. [DOI: 10.1002/ange.201610457] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Manuel Hofer
- Department of Chemistry; University of Zürich; Winterthurerstrasse 190 8057 Zürich Switzerland
| | - Alexandre Genoux
- Department of Chemistry; University of Zürich; Winterthurerstrasse 190 8057 Zürich Switzerland
| | - Roopender Kumar
- Department of Chemistry; University of Zürich; Winterthurerstrasse 190 8057 Zürich Switzerland
| | - Cristina Nevado
- Department of Chemistry; University of Zürich; Winterthurerstrasse 190 8057 Zürich Switzerland
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26
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Hofer M, Genoux A, Kumar R, Nevado C. Gold-Catalyzed Direct Oxidative Arylation with Boron Coupling Partners. Angew Chem Int Ed Engl 2016; 56:1021-1025. [DOI: 10.1002/anie.201610457] [Citation(s) in RCA: 77] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2016] [Indexed: 01/17/2023]
Affiliation(s)
- Manuel Hofer
- Department of Chemistry; University of Zürich; Winterthurerstrasse 190 8057 Zürich Switzerland
| | - Alexandre Genoux
- Department of Chemistry; University of Zürich; Winterthurerstrasse 190 8057 Zürich Switzerland
| | - Roopender Kumar
- Department of Chemistry; University of Zürich; Winterthurerstrasse 190 8057 Zürich Switzerland
| | - Cristina Nevado
- Department of Chemistry; University of Zürich; Winterthurerstrasse 190 8057 Zürich Switzerland
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27
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Kumar R, Linden A, Nevado C. Evidence for Direct Transmetalation of AuIII–F with Boronic Acids. J Am Chem Soc 2016; 138:13790-13793. [DOI: 10.1021/jacs.6b07763] [Citation(s) in RCA: 59] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Roopender Kumar
- Department of Chemistry, University of Zurich, Winterthurerstrasse
190, Zurich CH 8057, Switzerland
| | - Anthony Linden
- Department of Chemistry, University of Zurich, Winterthurerstrasse
190, Zurich CH 8057, Switzerland
| | - Cristina Nevado
- Department of Chemistry, University of Zurich, Winterthurerstrasse
190, Zurich CH 8057, Switzerland
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28
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Serra J, Parella T, Ribas X. Au(iii)-aryl intermediates in oxidant-free C-N and C-O cross-coupling catalysis. Chem Sci 2016; 8:946-952. [PMID: 28572904 PMCID: PMC5452266 DOI: 10.1039/c6sc03699f] [Citation(s) in RCA: 67] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2016] [Accepted: 09/22/2016] [Indexed: 01/17/2023] Open
Abstract
Au(iii)-aryl species have been crystallographically isolated as reactive intermediates in oxidant-free C–O and C–N cross coupling processes, using aromatic and aliphatic alcohols and amines, as well as water and amides, as nucleophiles.
Au(iii)-aryl species have been unequivocally identified as reactive intermediates in oxidant-free C–O and C–N cross coupling catalysis. The crystal structures of cyclometalated neutral and cationic Au(iii) species are described and their key role in 2 electron-redox Au(i)/Au(iii) catalysis in C–O and C–N cross couplings is shown. Nucleophiles compatible with Au-catalyzed cross couplings include aromatic and aliphatic alcohols and amines, as well as water and amides.
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Affiliation(s)
- Jordi Serra
- QBIS-CAT Group , Institut de Química Computacional i Catàlisi (IQCC) , Departament de Química , Universitat de Girona , Campus Montilivi , Girona , E-17003 , Catalonia , Spain .
| | - Teodor Parella
- Servei de RMN , Facultat de Cieǹcies , Universitat Autoǹoma de Barcelona , Campus UAB , Bellaterra E-08193 , Catalonia , Spain
| | - Xavi Ribas
- QBIS-CAT Group , Institut de Química Computacional i Catàlisi (IQCC) , Departament de Química , Universitat de Girona , Campus Montilivi , Girona , E-17003 , Catalonia , Spain .
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29
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Wang Q, Jiang Y, Sun R, Tang XY, Shi M. Gold-Catalyzed Fluorination-Hydration: Synthesis of α-Fluorobenzofuranones from 2-Alkynylphenol Derivatives. Chemistry 2016; 22:14739-45. [DOI: 10.1002/chem.201602545] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2016] [Indexed: 11/09/2022]
Affiliation(s)
- Qiang Wang
- Key Laboratory for Advanced Materials and Institute of Fine Chemicals; School of Chemistry & Molecular Engineering; East China University of Science and Technology; Meilong Road No. 130 Shanghai 200237 China
| | - Yu Jiang
- Key Laboratory for Advanced Materials and Institute of Fine Chemicals; School of Chemistry & Molecular Engineering; East China University of Science and Technology; Meilong Road No. 130 Shanghai 200237 China
| | - Run Sun
- Key Laboratory for Advanced Materials and Institute of Fine Chemicals; School of Chemistry & Molecular Engineering; East China University of Science and Technology; Meilong Road No. 130 Shanghai 200237 China
| | - Xiang-Ying Tang
- State Key Laboratory of Organometallic Chemistry; Shanghai Institute of Organic Chemistry (SIOC); Chinese Academy of Sciences; 345 Lingling Road Shanghai 200032 China
| | - Min Shi
- Key Laboratory for Advanced Materials and Institute of Fine Chemicals; School of Chemistry & Molecular Engineering; East China University of Science and Technology; Meilong Road No. 130 Shanghai 200237 China
- State Key Laboratory of Organometallic Chemistry; Shanghai Institute of Organic Chemistry (SIOC); Chinese Academy of Sciences; 345 Lingling Road Shanghai 200032 China
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30
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Kramer S. Recent Advances in Gold-Catalyzed Intermolecular Aryl C−H Functionalization. Chemistry 2016; 22:15584-15598. [DOI: 10.1002/chem.201602316] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2016] [Indexed: 12/14/2022]
Affiliation(s)
- Søren Kramer
- Center for Interdisciplinary Nanoscience (iNANO); Department of Chemistry; Aarhus University; Gustav Wieds vej 14 8000 Aarhus C Denmark
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31
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Corbo R, Ryan GF, Haghighatbin MA, Hogan CF, Wilson DJD, Hulett MD, Barnard PJ, Dutton JL. Access to the Parent Tetrakis(pyridine)gold(III) Trication, Facile Formation of Rare Au(III) Terminal Hydroxides, and Preliminary Studies of Biological Properties. Inorg Chem 2016; 55:2830-9. [PMID: 26930516 DOI: 10.1021/acs.inorgchem.5b02667] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
In this paper we report on the use of [NO][BF4] to access tricationic tetrakis(pyridine)gold(III) from Au powder, a species inaccessible using the more traditional (tetrahydrothiophene)AuCl route. It is then demonstrated that this family of compounds can be used to access new terminal Au(III) hydroxides, a challenging class of compounds, and the first crystallographically characterized examples employing bidentate ligands. Finally, preliminary biological studies indicate good activity for derivatives featuring polydentate ligands against the HeLa and PC3 cell lines but also strong inhibition of primary HUVEC cells.
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Affiliation(s)
- Robert Corbo
- Department of Chemistry and Physics, La Trobe Institute for Molecular Science, La Trobe University , Melbourne, Victoria 3086, Australia
| | - Gemma F Ryan
- Department of Biochemistry and Genetics, La Trobe Institute for Molecular Science, La Trobe University , Melbourne, Victoria 3086, Australia
| | - Mohammad A Haghighatbin
- Department of Chemistry and Physics, La Trobe Institute for Molecular Science, La Trobe University , Melbourne, Victoria 3086, Australia
| | - Conor F Hogan
- Department of Chemistry and Physics, La Trobe Institute for Molecular Science, La Trobe University , Melbourne, Victoria 3086, Australia
| | - David J D Wilson
- Department of Chemistry and Physics, La Trobe Institute for Molecular Science, La Trobe University , Melbourne, Victoria 3086, Australia
| | - Mark D Hulett
- Department of Biochemistry and Genetics, La Trobe Institute for Molecular Science, La Trobe University , Melbourne, Victoria 3086, Australia
| | - Peter J Barnard
- Department of Chemistry and Physics, La Trobe Institute for Molecular Science, La Trobe University , Melbourne, Victoria 3086, Australia
| | - Jason L Dutton
- Department of Chemistry and Physics, La Trobe Institute for Molecular Science, La Trobe University , Melbourne, Victoria 3086, Australia
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32
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Rekhroukh F, Estevez L, Bijani C, Miqueu K, Amgoune A, Bourissou D. Coordination–Insertion of Norbornene at Gold: A Mechanistic Study. Organometallics 2016. [DOI: 10.1021/acs.organomet.6b00040] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Affiliation(s)
- Feriel Rekhroukh
- Université de Toulouse, UPS, Laboratoire Hétérochimie
Fondamentale Appliquée, 118 route de Narbonne, F-31062 Toulouse, France; CNRS, LHFA UMR
5069, F-31062 Toulouse, France
| | - Laura Estevez
- Université de Pau et des Pays de l’Adour, Institut
des Sciences Analytiques et de Physico-Chimie pour l’Environnement
et les Matériaux, Hélioparc, 2 Avenue du Président Angot, 64053 Pau cedex 09, France; CNRS, IPREM UMR 5254, F-64053 Pau, France
- Departamento
de Química Física, Facultade de Química, Universidade de Vigo,
Lagoas-Marcosende s/n, 36310 Vigo, Galicia, Spain
| | - Christian Bijani
- Laboratoire de Chimie de Coordination (CNRS UPR 8241), 205 Route de Narbonne, 31077 Toulouse, France
| | - Karinne Miqueu
- Université de Pau et des Pays de l’Adour, Institut
des Sciences Analytiques et de Physico-Chimie pour l’Environnement
et les Matériaux, Hélioparc, 2 Avenue du Président Angot, 64053 Pau cedex 09, France; CNRS, IPREM UMR 5254, F-64053 Pau, France
| | - Abderrahmane Amgoune
- Université de Toulouse, UPS, Laboratoire Hétérochimie
Fondamentale Appliquée, 118 route de Narbonne, F-31062 Toulouse, France; CNRS, LHFA UMR
5069, F-31062 Toulouse, France
| | - Didier Bourissou
- Université de Toulouse, UPS, Laboratoire Hétérochimie
Fondamentale Appliquée, 118 route de Narbonne, F-31062 Toulouse, France; CNRS, LHFA UMR
5069, F-31062 Toulouse, France
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33
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Huang L, Rudolph M, Rominger F, Hashmi ASK. Gold‐katalysierte 1,2‐Difunktionalisierung von Alkinen mit sichtbarem Licht ohne zusätzlichen Photosensibilisator. Angew Chem Int Ed Engl 2016. [DOI: 10.1002/ange.201511487] [Citation(s) in RCA: 88] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Long Huang
- Organisch-Chemisches Institut Universität Heidelberg Im Neuenheimer Feld 270 69120 Heidelberg Deutschland
| | - Matthias Rudolph
- Organisch-Chemisches Institut Universität Heidelberg Im Neuenheimer Feld 270 69120 Heidelberg Deutschland
| | - Frank Rominger
- Organisch-Chemisches Institut Universität Heidelberg Im Neuenheimer Feld 270 69120 Heidelberg Deutschland
| | - A. Stephen K. Hashmi
- Organisch-Chemisches Institut Universität Heidelberg Im Neuenheimer Feld 270 69120 Heidelberg Deutschland
- Chemistry Department Faculty of Science King Abdulaziz University Jeddah 21589 Saudi Arabien
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34
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Huang L, Rudolph M, Rominger F, Hashmi ASK. Photosensitizer-Free Visible-Light-Mediated Gold-Catalyzed 1,2-Difunctionalization of Alkynes. Angew Chem Int Ed Engl 2016; 55:4808-13. [DOI: 10.1002/anie.201511487] [Citation(s) in RCA: 227] [Impact Index Per Article: 28.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2015] [Indexed: 12/17/2022]
Affiliation(s)
- Long Huang
- Organisch-Chemisches Institut; Universität Heidelberg; Im Neuenheimer Feld 270 69120 Heidelberg Germany
| | - Matthias Rudolph
- Organisch-Chemisches Institut; Universität Heidelberg; Im Neuenheimer Feld 270 69120 Heidelberg Germany
| | - Frank Rominger
- Organisch-Chemisches Institut; Universität Heidelberg; Im Neuenheimer Feld 270 69120 Heidelberg Germany
| | - A. Stephen K. Hashmi
- Organisch-Chemisches Institut; Universität Heidelberg; Im Neuenheimer Feld 270 69120 Heidelberg Germany
- Chemistry Department; Faculty of Science; King Abdulaziz University; Jeddah 21589 Saudi Arabia
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35
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Molteni R, Edkins K, Haehnel M, Steffen A. C–H Activation of Fluoroarenes: Synthesis, Structure, and Luminescence Properties of Copper(I) and Gold(I) Complexes Bearing 2-Phenylpyridine Ligands. Organometallics 2016. [DOI: 10.1021/acs.organomet.5b00904] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Roberto Molteni
- Institut
für Anorganische
Chemie, Fakultät für Chemie und Pharmazie, Universität Würzburg, Am Hubland, 97074 Würzburg, Germany
| | - Katharina Edkins
- Institut
für Anorganische
Chemie, Fakultät für Chemie und Pharmazie, Universität Würzburg, Am Hubland, 97074 Würzburg, Germany
| | - Martin Haehnel
- Institut
für Anorganische
Chemie, Fakultät für Chemie und Pharmazie, Universität Würzburg, Am Hubland, 97074 Würzburg, Germany
| | - Andreas Steffen
- Institut
für Anorganische
Chemie, Fakultät für Chemie und Pharmazie, Universität Würzburg, Am Hubland, 97074 Würzburg, Germany
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36
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Kawai H, Wolf WJ, DiPasquale AG, Winston MS, Toste FD. Phosphonium Formation by Facile Carbon–Phosphorus Reductive Elimination from Gold(III). J Am Chem Soc 2016; 138:587-93. [DOI: 10.1021/jacs.5b10720] [Citation(s) in RCA: 71] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Hiroyuki Kawai
- Department of Chemistry, University of California, Berkeley, California 94720, United States
| | - William J. Wolf
- Department of Chemistry, University of California, Berkeley, California 94720, United States
| | - Antonio G. DiPasquale
- Department of Chemistry, University of California, Berkeley, California 94720, United States
| | - Matthew S. Winston
- Los Alamos National Laboratory, Chemistry Division, Los Alamos, New Mexico 87545, United States
| | - F. Dean Toste
- Department of Chemistry, University of California, Berkeley, California 94720, United States
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37
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Hata K, Ito H, Segawa Y, Itami K. Pyridylidene ligand facilitates gold-catalyzed oxidative C-H arylation of heterocycles. Beilstein J Org Chem 2015; 11:2737-46. [PMID: 26877796 PMCID: PMC4734412 DOI: 10.3762/bjoc.11.295] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2015] [Accepted: 12/09/2015] [Indexed: 01/19/2023] Open
Abstract
Triaryl-2-pyridylidene effectively facilitates the gold-catalyzed oxidative C-H arylation of heteroarenes with arylsilanes as a unique electron-donating ligand on gold. The employment of the 2-pyridylidene ligand, which is one of the strongest electron-donating N-heterocyclic carbenes, resulted in the rate acceleration of the C-H arylation reaction of heterocycles over conventional ligands such as triphenylphosphine and a classical N-heterocyclic carbene. In situ observation and isolation of the 2-pyridylidene-gold(III) species, as well as a DFT study, indicated unusual stability of gold(III) species stabilized by strong electron donation from the 2-pyridylidene ligand. Thus, the gold(I)-to-gold(III) oxidation process is thought to be facilitated by the highly electron-donating 2-pyridylidene ligand.
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Affiliation(s)
- Kazuhiro Hata
- Graduate School of Science, Nagoya University, Chikusa, Nagoya 464-8602, Japan
| | - Hideto Ito
- Graduate School of Science, Nagoya University, Chikusa, Nagoya 464-8602, Japan
| | - Yasutomo Segawa
- Graduate School of Science, Nagoya University, Chikusa, Nagoya 464-8602, Japan; JST, ERATO, Itami Molecular Nanocarbon Project, Nagoya University, Chikusa, Nagoya 464-8602, Japan
| | - Kenichiro Itami
- Graduate School of Science, Nagoya University, Chikusa, Nagoya 464-8602, Japan; JST, ERATO, Itami Molecular Nanocarbon Project, Nagoya University, Chikusa, Nagoya 464-8602, Japan; Institute of Transformative Bio-Molecules (WPI-ITbM), Nagoya University, Chikusa, Nagoya 464-8602, Japan
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38
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Cambeiro XC, Ahlsten N, Larrosa I. Au-Catalyzed Cross-Coupling of Arenes via Double C–H Activation. J Am Chem Soc 2015; 137:15636-9. [DOI: 10.1021/jacs.5b10593] [Citation(s) in RCA: 156] [Impact Index Per Article: 17.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Xacobe C. Cambeiro
- School of Chemistry, University of Manchester, Oxford
Road, M13
9PL Manchester, U.K
| | - Nanna Ahlsten
- School of Chemistry, University of Manchester, Oxford
Road, M13
9PL Manchester, U.K
| | - Igor Larrosa
- School of Chemistry, University of Manchester, Oxford
Road, M13
9PL Manchester, U.K
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39
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Joost M, Amgoune A, Bourissou D. Reaktivität von Goldkomplexen in metallorganischen Elementarreaktionen. Angew Chem Int Ed Engl 2015. [DOI: 10.1002/ange.201506271] [Citation(s) in RCA: 76] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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40
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Joost M, Amgoune A, Bourissou D. Reactivity of Gold Complexes towards Elementary Organometallic Reactions. Angew Chem Int Ed Engl 2015; 54:15022-45. [DOI: 10.1002/anie.201506271] [Citation(s) in RCA: 223] [Impact Index Per Article: 24.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2015] [Indexed: 11/09/2022]
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41
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Shaw AJM, Corbo R, Wilson DJD, Dutton JL. A 2,2′-bipyridine coordination complex of [ICl2]+. Dalton Trans 2015; 44:15083-7. [DOI: 10.1039/c4dt03549f] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
A straightforward synthesis of a new type of iodine(iii) complex is presented – anN′Nchelated [ICl2]+cation.
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Affiliation(s)
- Andrew J. M. Shaw
- Department of Chemistry
- La Trobe Institute for Molecular Science
- La Trobe University
- Melbourne
- Australia
| | - Robert Corbo
- Department of Chemistry
- La Trobe Institute for Molecular Science
- La Trobe University
- Melbourne
- Australia
| | - David J. D. Wilson
- Department of Chemistry
- La Trobe Institute for Molecular Science
- La Trobe University
- Melbourne
- Australia
| | - Jason L. Dutton
- Department of Chemistry
- La Trobe Institute for Molecular Science
- La Trobe University
- Melbourne
- Australia
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42
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Wu Q, Du C, Huang Y, Liu X, Long Z, Song F, You J. Stoichiometric to catalytic reactivity of the aryl cycloaurated species with arylboronic acids: insight into the mechanism of gold-catalyzed oxidative C(sp 2)-H arylation. Chem Sci 2015; 6:288-293. [PMID: 28626549 PMCID: PMC5463920 DOI: 10.1039/c4sc02070g] [Citation(s) in RCA: 61] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2014] [Accepted: 10/07/2014] [Indexed: 01/24/2023] Open
Abstract
Based on the well-defined five-membered aryl gold(iii) complexes, [Au(tpy)X2] (3a and 3b) and [AuBr(Ph)(tpy)] (7), as well as the aryl gold(iii) complex [AuCl2(Ph)(tpy)] (8) (tpy = 2-(o-tolyl)pyridine) as reliable models, we present a detailed study of the mechanism for gold(iii)-catalyzed oxidative cross-coupling reactions between cycloaurable arenes and arylboronic acids. Here we report the direct evidence for a mechanistic proposal including arene C-H activation, transmetallation and biaryl reductive elimination. The chelation-assisted C-H activation strategy has been used for the development of the gold(iii)-catalyzed C-H bond arylation of arenes with aryl reagents to forge extended π-conjugated systems.
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Affiliation(s)
- Qian Wu
- Key Laboratory of Green Chemistry and Technology of Ministry of Education , College of Chemistry and State Key Laboratory of Biotherapy , West China Medical School , Sichuan University , 29 Wangjiang Road , Chengdu 610064 , PR China . ;
| | - Chenglong Du
- Key Laboratory of Green Chemistry and Technology of Ministry of Education , College of Chemistry and State Key Laboratory of Biotherapy , West China Medical School , Sichuan University , 29 Wangjiang Road , Chengdu 610064 , PR China . ;
| | - Yumin Huang
- Key Laboratory of Green Chemistry and Technology of Ministry of Education , College of Chemistry and State Key Laboratory of Biotherapy , West China Medical School , Sichuan University , 29 Wangjiang Road , Chengdu 610064 , PR China . ;
| | - Xingyan Liu
- Key Laboratory of Green Chemistry and Technology of Ministry of Education , College of Chemistry and State Key Laboratory of Biotherapy , West China Medical School , Sichuan University , 29 Wangjiang Road , Chengdu 610064 , PR China . ;
| | - Zhen Long
- Key Laboratory of Green Chemistry and Technology of Ministry of Education , College of Chemistry and State Key Laboratory of Biotherapy , West China Medical School , Sichuan University , 29 Wangjiang Road , Chengdu 610064 , PR China . ;
| | - Feijie Song
- Key Laboratory of Green Chemistry and Technology of Ministry of Education , College of Chemistry and State Key Laboratory of Biotherapy , West China Medical School , Sichuan University , 29 Wangjiang Road , Chengdu 610064 , PR China . ;
| | - Jingsong You
- Key Laboratory of Green Chemistry and Technology of Ministry of Education , College of Chemistry and State Key Laboratory of Biotherapy , West China Medical School , Sichuan University , 29 Wangjiang Road , Chengdu 610064 , PR China . ;
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43
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Corbo R, Pell TP, Stringer BD, Hogan CF, Wilson DJD, Barnard PJ, Dutton JL. Facile Formation of Homoleptic Au(III) Trications via Simultaneous Oxidation and Ligand Delivery from [PhI(pyridine)2]2+. J Am Chem Soc 2014; 136:12415-21. [DOI: 10.1021/ja506365m] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Affiliation(s)
- Robert Corbo
- Department
of Chemistry,
La Trobe Institute for Molecular Science, La Trobe University, Melbourne, Victoria 3086, Australia
| | - Thomas P. Pell
- Department
of Chemistry,
La Trobe Institute for Molecular Science, La Trobe University, Melbourne, Victoria 3086, Australia
| | - Bradley D. Stringer
- Department
of Chemistry,
La Trobe Institute for Molecular Science, La Trobe University, Melbourne, Victoria 3086, Australia
| | - Conor F. Hogan
- Department
of Chemistry,
La Trobe Institute for Molecular Science, La Trobe University, Melbourne, Victoria 3086, Australia
| | - David J. D. Wilson
- Department
of Chemistry,
La Trobe Institute for Molecular Science, La Trobe University, Melbourne, Victoria 3086, Australia
| | - Peter J. Barnard
- Department
of Chemistry,
La Trobe Institute for Molecular Science, La Trobe University, Melbourne, Victoria 3086, Australia
| | - Jason L. Dutton
- Department
of Chemistry,
La Trobe Institute for Molecular Science, La Trobe University, Melbourne, Victoria 3086, Australia
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44
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Winston MS, Wolf WJ, Toste FD. Photoinitiated oxidative addition of CF3I to gold(I) and facile aryl-CF3 reductive elimination. J Am Chem Soc 2014; 136:7777-82. [PMID: 24836526 PMCID: PMC4046758 DOI: 10.1021/ja503974x] [Citation(s) in RCA: 124] [Impact Index Per Article: 12.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
![]()
Herein we report the mechanism of
oxidative addition of CF3I to Au(I), and remarkably fast
Caryl–CF3 bond reductive elimination
from Au(III) cations. CF3I undergoes a fast, formal oxidative
addition to R3PAuR′
(R = Cy, R′ = 3,5-F2-C6H4,
4-F-C6H4, C6H5, 4-Me-C6H4, 4-MeO-C6H4, Me; R = Ph,
R′ = 4-F-C6H4, 4-Me-C6H4). When R′ = aryl, complexes of the type R3PAu(aryl)(CF3)I can be isolated and characterized. Mechanistic
studies suggest that near-ultraviolet light (λmax = 313 nm) photoinitiates a radical chain reaction by exciting CF3I. Complexes supported by PPh3 undergo reversible
phosphine dissociation at 110 °C to generate a three-coordinate
intermediate that undergoes slow reductive elimination. These processes
are quantitative and heavily favor Caryl–I reductive
elimination over Caryl–CF3 reductive
elimination. Silver-mediated halide abstraction from all complexes
of the type R3PAu(aryl)(CF3)I results
in quantitative formation of Ar–CF3 in less than
1 min at temperatures as low as −10 °C.
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Affiliation(s)
- Matthew S Winston
- Department of Chemistry, University of California , Berkeley, California 94720, United States
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45
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Affiliation(s)
- Manuel Hofer
- Department of Chemistry, University of Zurich, Winterthurerstrasse 190, CH-8057 Zurich, Switzerland
| | - Enrique Gomez-Bengoa
- Dpto. de Quı́mica Orgánica, Universidad del Paı́s Vasco, Apt. 1072, 20080 San Sebastián, Spain
| | - Cristina Nevado
- Department of Chemistry, University of Zurich, Winterthurerstrasse 190, CH-8057 Zurich, Switzerland
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46
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Ball LT, Lloyd-Jones GC, Russell CA. Gold-catalyzed oxidative coupling of arylsilanes and arenes: origin of selectivity and improved precatalyst. J Am Chem Soc 2013; 136:254-64. [PMID: 24367895 DOI: 10.1021/ja408712e] [Citation(s) in RCA: 182] [Impact Index Per Article: 16.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
The mechanism of gold-catalyzed coupling of arenes with aryltrimethylsilanes has been investigated, employing an improved precatalyst (thtAuBr3) to facilitate kinetic analysis. In combination with linear free-energy relationships, kinetic isotope effects, and stoichiometric experiments, the data support a mechanism involving an Au(I)/Au(III) redox cycle in which sequential electrophilic aromatic substitution of the arylsilane and the arene by Au(III) precedes product-forming reductive elimination and subsequent cycle-closing reoxidation of the metal. Despite the fundamental mechanistic similarities between the two auration events, high selectivity is observed for heterocoupling (C-Si then C-H auration) over homocoupling of either the arylsilane or the arene (C-Si then C-Si, or C-H then C-H auration); this chemoselectivity originates from differences in the product-determining elementary steps of each electrophilic substitution. The turnover-limiting step of the reaction involves associative substitution en route to an arene π-complex. The ramifications of this insight for implementation of the methodology are discussed.
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Affiliation(s)
- Liam T Ball
- School of Chemistry, University of Edinburgh , Joseph Black Building, West Mains Road, Edinburgh EH9 3JJ, U.K
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47
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Ghidiu MJ, Pistner AJ, Yap GPA, Lutterman DA, Rosenthal J. Correction to Thermal versus Photochemical Reductive Elimination of Aryl Chlorides from NHC-Gold Complexes. Organometallics 2013. [DOI: 10.1021/om400989k] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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