51
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Chintawar CC, Yadav AK, Patil NT. Gold‐Catalyzed 1,2‐Diarylation of Alkenes. Angew Chem Int Ed Engl 2020; 59:11808-11813. [DOI: 10.1002/anie.202002141] [Citation(s) in RCA: 51] [Impact Index Per Article: 12.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2020] [Indexed: 11/10/2022]
Affiliation(s)
- Chetan C. Chintawar
- Department of Chemistry Indian Institute of Science Education and Research Bhopal Bhauri Bhopal 462 066 India
| | - Amit K. Yadav
- Department of Chemistry Indian Institute of Science Education and Research Bhopal Bhauri Bhopal 462 066 India
| | - Nitin T. Patil
- Department of Chemistry Indian Institute of Science Education and Research Bhopal Bhauri Bhopal 462 066 India
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52
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Affiliation(s)
- Chetan C. Chintawar
- Department of Chemistry Indian Institute of Science Education and Research Bhopal Bhauri Bhopal 462 066 India
| | - Amit K. Yadav
- Department of Chemistry Indian Institute of Science Education and Research Bhopal Bhauri Bhopal 462 066 India
| | - Nitin T. Patil
- Department of Chemistry Indian Institute of Science Education and Research Bhopal Bhauri Bhopal 462 066 India
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53
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Mayans JG, Suppo JS, Echavarren AM. Photoredox-Assisted Gold-Catalyzed Arylative Alkoxycyclization of 1,6-Enynes. Org Lett 2020; 22:3045-3049. [PMID: 32243187 DOI: 10.1021/acs.orglett.0c00799] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The photoredox-assisted gold-catalyzed arylative cyclization of 1,6-enynes with aryldiazonium salts gives rise to cyclization products with the opposite configuration at the alkene than that obtained by gold(I)-catalyzed alkoxycyclization. The reaction occurs under mild conditions and shows high functional group tolerance.
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Affiliation(s)
- Joan G Mayans
- Institute of Chemical Research of Catalonia (ICIQ), Barcelona Institute of Science and Technology, Av. Països Catalans 16, 43007 Tarragona, Spain.,Departament de Quı́mica Orgànica i Analı́tica, Universitat Rovira i Virgili, C/Marcel·lí Domingo s/n, 43007 Tarragona, Spain
| | - Jean-Simon Suppo
- Institute of Chemical Research of Catalonia (ICIQ), Barcelona Institute of Science and Technology, Av. Països Catalans 16, 43007 Tarragona, Spain.,Departament de Quı́mica Orgànica i Analı́tica, Universitat Rovira i Virgili, C/Marcel·lí Domingo s/n, 43007 Tarragona, Spain
| | - Antonio M Echavarren
- Institute of Chemical Research of Catalonia (ICIQ), Barcelona Institute of Science and Technology, Av. Països Catalans 16, 43007 Tarragona, Spain.,Departament de Quı́mica Orgànica i Analı́tica, Universitat Rovira i Virgili, C/Marcel·lí Domingo s/n, 43007 Tarragona, Spain
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54
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Dahiya A, Fricke C, Schoenebeck F. Gold-Catalyzed Chemoselective Couplings of Polyfluoroarenes with Aryl Germanes and Downstream Diversification. J Am Chem Soc 2020; 142:7754-7759. [DOI: 10.1021/jacs.0c02860] [Citation(s) in RCA: 60] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Amit Dahiya
- Institute of Organic Chemistry, RWTH Aachen University, Landoltweg 1, 52074 Aachen, Germany
| | - Christoph Fricke
- 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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55
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Jazzar R, Soleilhavoup M, Bertrand G. Cyclic (Alkyl)- and (Aryl)-(amino)carbene Coinage Metal Complexes and Their Applications. Chem Rev 2020; 120:4141-4168. [DOI: 10.1021/acs.chemrev.0c00043] [Citation(s) in RCA: 131] [Impact Index Per Article: 32.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Rodolphe Jazzar
- UCSD-CNRS Joint Research Laboratory (UMI 3555), Department of Chemistry and Biochemistry, University of California, San Diego, La Jolla, California 92093-0358, United States
| | - Michele Soleilhavoup
- UCSD-CNRS Joint Research Laboratory (UMI 3555), Department of Chemistry and Biochemistry, University of California, San Diego, La Jolla, California 92093-0358, United States
| | - Guy Bertrand
- UCSD-CNRS Joint Research Laboratory (UMI 3555), Department of Chemistry and Biochemistry, University of California, San Diego, La Jolla, California 92093-0358, United States
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56
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Cadge JA, Sparkes HA, Bower JF, Russell CA. Oxidative Addition of Alkenyl and Alkynyl Iodides to a Au
I
Complex. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202000473] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Affiliation(s)
- Jamie A. Cadge
- School of ChemistryUniversity of Bristol Cantock's Close BS8 1TS UK
| | - Hazel A. Sparkes
- School of ChemistryUniversity of Bristol Cantock's Close BS8 1TS UK
| | - John F. Bower
- School of ChemistryUniversity of Bristol Cantock's Close BS8 1TS UK
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57
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Cadge JA, Sparkes HA, Bower JF, Russell CA. Oxidative Addition of Alkenyl and Alkynyl Iodides to a Au I Complex. Angew Chem Int Ed Engl 2020; 59:6617-6621. [PMID: 31951062 DOI: 10.1002/anie.202000473] [Citation(s) in RCA: 34] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2020] [Indexed: 12/22/2022]
Abstract
The first isolated examples of intermolecular oxidative addition of alkenyl and alkynyl iodides to AuI are reported. Using a 5,5'-difluoro-2,2'-bipyridyl ligated complex, oxidative addition of geometrically defined alkenyl iodides occurs readily, reversibly and stereospecifically to give alkenyl-AuIII complexes. Conversely, reversible alkynyl iodide oxidative addition generates bimetallic complexes containing both AuIII and AuI centers. Stoichiometric studies show that both new initiation modes can form the basis for the development of C-C bond forming cross-couplings.
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Affiliation(s)
- Jamie A Cadge
- School of Chemistry, University of Bristol, Cantock's Close, BS8 1TS, UK
| | - Hazel A Sparkes
- School of Chemistry, University of Bristol, Cantock's Close, BS8 1TS, UK
| | - John F Bower
- School of Chemistry, University of Bristol, Cantock's Close, BS8 1TS, UK
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58
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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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59
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Tathe AG, Chintawar CC, Bhoyare VW, Patil NT. Ligand-enabled gold-catalyzed 1,2-heteroarylation of alkenes. Chem Commun (Camb) 2020; 56:9304-9307. [DOI: 10.1039/d0cc03707a] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
By adopting the interplay between ligand-enabled Au(i)/Au(iii) catalysis and the unique π-activation mode of gold complexes, a highly coveted 1,2-heteroarylation of alkenes has been accomplished.
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Affiliation(s)
- Akash G. Tathe
- Department of Chemistry, Indian Institute of Science Education and Research (IISER), Bhopal Bypass Road, Bhauri
- Bhopal – 462 066
- India
| | - Chetan C. Chintawar
- Department of Chemistry, Indian Institute of Science Education and Research (IISER), Bhopal Bypass Road, Bhauri
- Bhopal – 462 066
- India
| | - Vivek W. Bhoyare
- Department of Chemistry, Indian Institute of Science Education and Research (IISER), Bhopal Bypass Road, Bhauri
- Bhopal – 462 066
- India
| | - Nitin T. Patil
- Department of Chemistry, Indian Institute of Science Education and Research (IISER), Bhopal Bypass Road, Bhauri
- Bhopal – 462 066
- India
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60
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Banerjee S, Bhoyare VW, Patil NT. Gold and hypervalent iodine(iii): liaisons over a decade for electrophilic functional group transfer reactions. Chem Commun (Camb) 2020; 56:2677-2690. [PMID: 32090230 DOI: 10.1039/d0cc00106f] [Citation(s) in RCA: 62] [Impact Index Per Article: 15.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
Over the last two decades, hypervalent iodine(iii) reagents have evolved from being 'bonding curiosities' to mainstream reagents in organic synthesis, in particular, electrophilic functional group transfer reactions. In this context, gold catalysts have not only emerged as a unique toolbox to facilitate such reactions (especially alkynylations) but also opened new possibilities with their different modes of reactivities for other functional group transfer reactions (acetoxylations and arylations). This feature article critically summarizes hitherto all such Au-catalyzed electrophilic functional group transfer reactions with hypervalent iodine(iii) reagents, emphasizing their mechanistic aspects.
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Affiliation(s)
- Somsuvra Banerjee
- Division of Organic Chemistry, CSIR-National Chemical Laboratory, Dr Homi Bhabha Road, Pune-411008, India and Academy of Scientific and Innovative Research (AcSIR), Ghaziabad-201002, India
| | - Vivek W Bhoyare
- Department of Chemistry, Indian Institute of Science Education and Research Bhopal, Bhauri, Bhopal-462066, India.
| | - Nitin T Patil
- Department of Chemistry, Indian Institute of Science Education and Research Bhopal, Bhauri, Bhopal-462066, India.
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61
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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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62
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Nijamudheen A, Datta A. Gold-Catalyzed Cross-Coupling Reactions: An Overview of Design Strategies, Mechanistic Studies, and Applications. Chemistry 2019; 26:1442-1487. [PMID: 31657487 DOI: 10.1002/chem.201903377] [Citation(s) in RCA: 101] [Impact Index Per Article: 20.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2019] [Revised: 10/28/2019] [Indexed: 12/14/2022]
Abstract
Transition-metal-catalyzed cross-coupling reactions are central to many organic synthesis methodologies. Traditionally, Pd, Ni, Cu, and Fe catalysts are used to promote these reactions. Recently, many studies have showed that both homogeneous and heterogeneous Au catalysts can be used for activating selective cross-coupling reactions. Here, an overview of the past studies, current trends, and future directions in the field of gold-catalyzed coupling reactions is presented. Design strategies to accomplish selective homocoupling and cross-coupling reactions under both homogeneous and heterogeneous conditions, computational and experimental mechanistic studies, and their applications in diverse fields are critically reviewed. Specific topics covered are: oxidant-assisted and oxidant-free reactions; strain-assisted reactions; dual Au and photoredox catalysis; bimetallic synergistic reactions; mechanisms of reductive elimination processes; enzyme-mimicking Au chemistry; cluster and surface reactions; and plasmonic catalysis. In the relevant sections, theoretical and computational studies of AuI /AuIII chemistry are discussed and the predictions from the calculations are compared with the experimental observations to derive useful design strategies.
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Affiliation(s)
- A Nijamudheen
- School of Chemical Sciences, Indian Association for the, Cultivation of Sciences, 2A & 2B Raja S C Mullick Road, Kolkata, 700032, India.,Department of Chemical & Biomedical Engineering, Florida A&M University-Florida State University, Joint College of Engineering, 2525 Pottsdamer Street, Tallahassee, FL, 32310, USA
| | - Ayan Datta
- School of Chemical Sciences, Indian Association for the, Cultivation of Sciences, 2A & 2B Raja S C Mullick Road, Kolkata, 700032, India
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63
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Liu Y, Yang Y, Zhu R, Liu C, Zhang D. DFT Study on Photosensitizer-Free Visible-Light-Mediated Au-Catalyzed cis-Difunctionalization of Alkynes: Mechanism and Selectivities as Compared to Rh Catalysis. J Org Chem 2019; 84:16171-16182. [DOI: 10.1021/acs.joc.9b02681] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Yanhong Liu
- Key Lab of Colloid and Interface Chemistry, Ministry of Education, Institute of Theoretical Chemistry, School of Chemistry and Chemical Engineering, Shandong University, Jinan 250100, P. R. China
| | - Yiying Yang
- Key Lab of Colloid and Interface Chemistry, Ministry of Education, Institute of Theoretical Chemistry, School of Chemistry and Chemical Engineering, Shandong University, Jinan 250100, P. R. China
| | - Rongxiu Zhu
- Key Lab of Colloid and Interface Chemistry, Ministry of Education, Institute of Theoretical Chemistry, School of Chemistry and Chemical Engineering, Shandong University, Jinan 250100, P. R. China
| | - Chengbu Liu
- Key Lab of Colloid and Interface Chemistry, Ministry of Education, Institute of Theoretical Chemistry, School of Chemistry and Chemical Engineering, Shandong University, Jinan 250100, P. R. China
| | - Dongju Zhang
- Key Lab of Colloid and Interface Chemistry, Ministry of Education, Institute of Theoretical Chemistry, School of Chemistry and Chemical Engineering, Shandong University, Jinan 250100, P. R. China
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64
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Busch J, Knoll DM, Zippel C, Bräse S, Bizzarri C. Metal-supported and -assisted stereoselective cooperative photoredox catalysis. Dalton Trans 2019; 48:15338-15357. [PMID: 31573576 DOI: 10.1039/c9dt02094b] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
In this perspective, we review those stereoselective photocatalytic reactions that use synergy between photoredox catalysts and transition metal catalysts. In particular, we highlight the orchestrated interaction between two and more metals which not only enhance the turnover numbers, but also lead to increased selectivities. Aspects of green chemistry and sustainable developments are included. In this review, C-C, C-O, C-N and C-S forming reactions are discussed and a perspective on future developments is given.
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Affiliation(s)
- Jasmin Busch
- Institute of Organic Chemistry, Fritz-Haber-Weg 6, 76131 Karlsruhe, Germany.
| | - Daniel M Knoll
- Institute of Organic Chemistry, Fritz-Haber-Weg 6, 76131 Karlsruhe, Germany.
| | - Christoph Zippel
- Institute of Organic Chemistry, Fritz-Haber-Weg 6, 76131 Karlsruhe, Germany.
| | - Stefan Bräse
- Institute of Organic Chemistry, Fritz-Haber-Weg 6, 76131 Karlsruhe, Germany. and Institute of Toxicology and Genetics, Hermann-von-Helmholtz-Platz 1, D-76344 Eggenstein-Leopoldshafen, Germany
| | - Claudia Bizzarri
- Institute of Organic Chemistry, Fritz-Haber-Weg 6, 76131 Karlsruhe, Germany.
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65
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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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66
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Rodriguez J, Zeineddine A, Sosa Carrizo ED, Miqueu K, Saffon-Merceron N, Amgoune A, Bourissou D. Catalytic Au(i)/Au(iii) arylation with the hemilabile MeDalphos ligand: unusual selectivity for electron-rich iodoarenes and efficient application to indoles. Chem Sci 2019; 10:7183-7192. [PMID: 31588286 PMCID: PMC6685352 DOI: 10.1039/c9sc01954e] [Citation(s) in RCA: 93] [Impact Index Per Article: 18.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2019] [Accepted: 06/13/2019] [Indexed: 12/14/2022] Open
Abstract
The ability of the hemilabile (P,N) MeDalphos ligand to trigger oxidative addition of iodoarenes to gold has been thoroughly studied. Competition experiments and Hammett correlations substantiate a clear preference of gold for electron-enriched substrates both in stoichiometric oxidative addition reactions and in catalytic C-C cross-coupling with 1,3,5-trimethoxybenzene. This feature markedly contrasts with the higher reactivity of electron-deprived substrates typically encountered with palladium. Based on DFT calculations and detailed analysis of the key transition states (using NBO, CDA and ETS-NOCV methods in particular), the different behavior of the two metals is proposed to result from inverse electron flow between the substrate and metal. Indeed, oxidative addition of iodobenzene is associated with a charge transfer from the substrate to the metal at the transition state for gold, but opposite for palladium. The higher electrophilicity of the gold center favors electron-rich substrates while important back-donation from palladium favors electron-poor substrates. Facile oxidative addition of iodoarenes combined with the propensity of gold(iii) complexes to readily react with electron-rich (hetero)arenes prompted us to apply the (MeDalphos)AuCl complex in the catalytic arylation of indoles, a challenging but very important transformation. The gold complex proved to be very efficient, general and robust. It displays complete regioselectivity for C3 arylation, it tolerates a variety of functional groups at both the iodoarene and indole partners (NO2, CO2Me, Br, OTf, Bpin, OMe…) and it proceeds under mild conditions (75 °C, 2 h).
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Affiliation(s)
- Jessica Rodriguez
- CNRS/Université Paul Sabatier , Laboratoire Hétérochimie Fondamentale et Appliquée (LHFA, UMR 5069) , 118 Route de Narbonne , 31062 Toulouse Cedex 09 , France .
| | - Abdallah Zeineddine
- CNRS/Université Paul Sabatier , Laboratoire Hétérochimie Fondamentale et Appliquée (LHFA, UMR 5069) , 118 Route de Narbonne , 31062 Toulouse Cedex 09 , France .
| | - E Daiann Sosa Carrizo
- CNRS/UNIV PAU & PAYS ADOUR , Institut des Sciences Analytiques et de Physico-Chimie pour l'Environnement et les Matériaux , (IPREM UMR 5254) , Hélioparc, 2 Avenue du Président Angot , 64053 Pau Cedex 09 , France
| | - Karinne Miqueu
- CNRS/UNIV PAU & PAYS ADOUR , Institut des Sciences Analytiques et de Physico-Chimie pour l'Environnement et les Matériaux , (IPREM UMR 5254) , Hélioparc, 2 Avenue du Président Angot , 64053 Pau Cedex 09 , France
| | - Nathalie Saffon-Merceron
- Institut de Chimie de Toulouse (FR 2599) , 118 Route de Narbonne , 31062 Toulouse Cedex 09 , France
| | - Abderrahmane Amgoune
- CNRS/Université Paul Sabatier , Laboratoire Hétérochimie Fondamentale et Appliquée (LHFA, UMR 5069) , 118 Route de Narbonne , 31062 Toulouse Cedex 09 , France .
| | - Didier Bourissou
- CNRS/Université Paul Sabatier , Laboratoire Hétérochimie Fondamentale et Appliquée (LHFA, UMR 5069) , 118 Route de Narbonne , 31062 Toulouse Cedex 09 , France .
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67
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Jimoh AA, Hosseyni S, Ye X, Wojtas L, Hu Y, Shi X. Gold redox catalysis for cyclization/arylation of allylic oximes: synthesis of isoxazoline derivatives. Chem Commun (Camb) 2019; 55:8150-8153. [PMID: 31241086 PMCID: PMC6641983 DOI: 10.1039/c9cc02830g] [Citation(s) in RCA: 33] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
Base-assisted diazonium activation has been employed to promote gold(i)/(iii) redox catalysis toward allylic oxime cyclization/aryl coupling. Functional isoxazolines were prepared with good to excellent yields, while the alternative photoactivation method provided trace amounts of the isoxazoline products. This study further broadens the scope of gold redox chemistry.
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Affiliation(s)
- Abiola Azeez Jimoh
- Department of Chemistry, University of South Florida, Tampa, FL 33620, USA.
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68
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Ren X, Lu Z. Visible light promoted difunctionalization reactions of alkynes. CHINESE JOURNAL OF CATALYSIS 2019. [DOI: 10.1016/s1872-2067(19)63278-x] [Citation(s) in RCA: 32] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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69
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Chen X, Martini S, Michelet V. A Mild and Regioselective Synthesis of α‐Fluoroketones
via
Gold and Selectfluor Partnership. Adv Synth Catal 2019. [DOI: 10.1002/adsc.201900268] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Affiliation(s)
- Xi Chen
- University Côte d'Azur – University Nice Sophia Antipolis, Institut de Chimie de Nice, UMR 7272 CNRS, Valrose ParkFaculty of Sciences 06108 Nice Cedex 2 France
| | - Sophie Martini
- University Côte d'Azur – University Nice Sophia Antipolis, Institut de Chimie de Nice, UMR 7272 CNRS, Valrose ParkFaculty of Sciences 06108 Nice Cedex 2 France
| | - Véronique Michelet
- University Côte d'Azur – University Nice Sophia Antipolis, Institut de Chimie de Nice, UMR 7272 CNRS, Valrose ParkFaculty of Sciences 06108 Nice Cedex 2 France
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70
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Mathew BP, Kuram MR. Emerging C H functionalization strategies for constructing fused polycyclic aromatic hydrocarbons and nanographenes. Inorganica Chim Acta 2019. [DOI: 10.1016/j.ica.2019.03.003] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
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71
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Shaikh AC, Banerjee S, Mule RD, Bera S, Patil NT. External Oxidant-Dependent Reactivity Switch in Copper-Mediated Intramolecular Carboamination of Alkynes: Access to a Different Class of Fluorescent Ionic Nitrogen-Doped Polycyclic Aromatic Hydrocarbons. J Org Chem 2019; 84:4120-4130. [PMID: 30813732 DOI: 10.1021/acs.joc.9b00120] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
An interesting case of external oxidant-controlled reactivity switch leading to a divergent set of ionic nitrogen-doped polycyclic aromatic hydrocarbons (N-doped PAHs), is presented here, which is quite unrecognized in copper-mediated reactions. In the current scenario, from the same pyridino-alkyne substrates, the use of the external oxidant PhI(OAc)2, in combination with Cu(OTf)2, gave N-doped spiro-PAHs via a dearomative 1,2-carboamination process; whereas, without the use of oxidant, an alkyne/azadiene [4 + 2]-cycloaddition cascade occurred to exclusively afford ionic N-doped PAHs. These newly synthesized N-doped PAHs further exhibit tunable emissions, as well as excellent quantum efficiencies.
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Affiliation(s)
- Aslam C Shaikh
- Division of Organic Chemistry , CSIR-National Chemical Laboratory , Dr. Homi Bhabha Road , Pune - 411 008 , India.,Academy of Scientific and Innovative Research (AcSIR) , Ghaziabad - 201 002 , India
| | - Somsuvra Banerjee
- Division of Organic Chemistry , CSIR-National Chemical Laboratory , Dr. Homi Bhabha Road , Pune - 411 008 , India.,Academy of Scientific and Innovative Research (AcSIR) , Ghaziabad - 201 002 , India
| | - Ravindra D Mule
- Division of Organic Chemistry , CSIR-National Chemical Laboratory , Dr. Homi Bhabha Road , Pune - 411 008 , India.,Academy of Scientific and Innovative Research (AcSIR) , Ghaziabad - 201 002 , India
| | - Saibal Bera
- Division of Physical and Materials Chemistry , CSIR-National Chemical Laboratory , Dr. Homi Bhabha Road , Pune - 411 008 , India.,Academy of Scientific and Innovative Research (AcSIR) , Ghaziabad - 201 002 , India
| | - Nitin T Patil
- Department of Chemistry , Indian Institute of Science Education and Research (IISER)-Bhopal , Bhopal - 462 066 , India
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72
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Li J, Yang F, Ma Y, Ji K. Gold(III)‐Catalyzed Intermolecular Oxidation‐Cyclization of Ynones: Access to 4‐Substituted Chroman‐3‐ones. Adv Synth Catal 2019. [DOI: 10.1002/adsc.201900260] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Affiliation(s)
- Jian Li
- College of Chemistry and PharmacyNorthwest A&F UniversityShaanxi Key Laboratory of Natural Products & Chemical Biology 3 Taicheng Road, Yangling 712100 Shaanxi People's Republic of China
| | - Fang Yang
- College of Chemistry and PharmacyNorthwest A&F UniversityShaanxi Key Laboratory of Natural Products & Chemical Biology 3 Taicheng Road, Yangling 712100 Shaanxi People's Republic of China
| | - Yang‐Ting Ma
- College of Chemistry and PharmacyNorthwest A&F UniversityShaanxi Key Laboratory of Natural Products & Chemical Biology 3 Taicheng Road, Yangling 712100 Shaanxi People's Republic of China
| | - Kegong Ji
- College of Chemistry and PharmacyNorthwest A&F UniversityShaanxi Key Laboratory of Natural Products & Chemical Biology 3 Taicheng Road, Yangling 712100 Shaanxi People's Republic of China
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73
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Praveen C. Dexterity of gold catalysis in controlling the regioselectivity of cycloaddition reactions. CATALYSIS REVIEWS-SCIENCE AND ENGINEERING 2019. [DOI: 10.1080/01614940.2019.1594016] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Affiliation(s)
- Chandrasekar Praveen
- Materials Electrochemistry Division, Central Electrochemical Research Institute (CSIR Laboratory), Karaikudi, Tamil Nadu, India
- Academy of Scientific and Innovative Research (AcSIR), Central Electrochemical Research Institute (CSIR Laboratory), Karaikudi, Tamil Nadu, India
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74
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Li W, Yuan D, Wang G, Zhao Y, Xie J, Li S, Zhu C. Cooperative Au/Ag Dual-Catalyzed Cross-Dehydrogenative Biaryl Coupling: Reaction Development and Mechanistic Insight. J Am Chem Soc 2019; 141:3187-3197. [DOI: 10.1021/jacs.8b12929] [Citation(s) in RCA: 64] [Impact Index Per Article: 12.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Affiliation(s)
- Weipeng Li
- State Key Laboratory of Coordination Chemistry, Jiangsu Key Laboratory of Advanced Organic Materials, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, China
| | - Dandan Yuan
- Key Laboratory of Mesoscopic Chemistry of Ministry of Education, Institute of Theoretical and Computational Chemistry, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, China
| | - Guoqiang Wang
- Key Laboratory of Mesoscopic Chemistry of Ministry of Education, Institute of Theoretical and Computational Chemistry, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, China
| | - Yue Zhao
- State Key Laboratory of Coordination Chemistry, Jiangsu Key Laboratory of Advanced Organic Materials, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, China
| | - Jin Xie
- State Key Laboratory of Coordination Chemistry, Jiangsu Key Laboratory of Advanced Organic Materials, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, China
| | - Shuhua Li
- Key Laboratory of Mesoscopic Chemistry of Ministry of Education, Institute of Theoretical and Computational Chemistry, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, China
| | - Chengjian Zhu
- State Key Laboratory of Coordination Chemistry, Jiangsu Key Laboratory of Advanced Organic Materials, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, China
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Shanghai 200032, China
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75
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Sadeghzadeh SM, Zhiani R. Photooxidation of triarylphosphines under aerobic conditions in the presence of a gold( iii) complex on cellulose extracted from Carthamus tinctorius immobilized on nanofibrous phosphosilicate. RSC Adv 2019; 9:1509-1516. [PMID: 35518055 PMCID: PMC9059722 DOI: 10.1039/c8ra09721f] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2018] [Accepted: 12/14/2018] [Indexed: 01/18/2023] Open
Abstract
Triarylphosphines were converted to the corresponding oxides via photooxidation as a novel method.
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Affiliation(s)
- Seyed Mohsen Sadeghzadeh
- New Materials Technology and Processing Research Center
- Department of Chemistry
- Neyshabur Branch
- Islamic Azad University
- Neyshabur
| | - Rahele Zhiani
- New Materials Technology and Processing Research Center
- Department of Chemistry
- Neyshabur Branch
- Islamic Azad University
- Neyshabur
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76
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Liu Y, Yang Y, Zhu R, Liu C, Zhang D. Computational study on the 1,3-diyne synthesis from gold( i)-catalyzed alkynylation of terminal alkynes with alkynyl hypervalent iodine reagents under the aid of a silver complex and 1,10-phenanthroline. Catal Sci Technol 2019. [DOI: 10.1039/c9cy01067j] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
DFT calculations reveal a new Au/Ag co-catalyzed π-activation mechanism for the formation of unsymmetrical 1,3-diyne.
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Affiliation(s)
- Yanhong Liu
- Key Lab of Colloid and Interface Chemistry
- Ministry of Education
- Institute of Theoretical Chemistry
- School of Chemistry and Chemical Engineering
- Shandong University
| | - Yiying Yang
- Key Lab of Colloid and Interface Chemistry
- Ministry of Education
- Institute of Theoretical Chemistry
- School of Chemistry and Chemical Engineering
- Shandong University
| | - Rongxiu Zhu
- Key Lab of Colloid and Interface Chemistry
- Ministry of Education
- Institute of Theoretical Chemistry
- School of Chemistry and Chemical Engineering
- Shandong University
| | - Chengbu Liu
- Key Lab of Colloid and Interface Chemistry
- Ministry of Education
- Institute of Theoretical Chemistry
- School of Chemistry and Chemical Engineering
- Shandong University
| | - Dongju Zhang
- Key Lab of Colloid and Interface Chemistry
- Ministry of Education
- Institute of Theoretical Chemistry
- School of Chemistry and Chemical Engineering
- Shandong University
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77
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Xie J, Sekine K, Witzel S, Krämer P, Rudolph M, Rominger F, Hashmi ASK. Light‐Induced Gold‐Catalyzed Hiyama Arylation: A Coupling Access to Biarylboronates. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201806427] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Jin Xie
- State Key Laboratory of Coordination ChemistryJiangsu Key Laboratory of Advanced Organic MaterialsSchool of Chemistry and Chemical EngineeringNanjing University Nanjing 210023 P. R. China
| | - Kohei Sekine
- Organisch-Chemisches InstitutUniversität Heidelberg Im Neuenheimer Feld 270 69120 Heidelberg Germany
| | - Sina Witzel
- Organisch-Chemisches InstitutUniversität Heidelberg Im Neuenheimer Feld 270 69120 Heidelberg Germany
| | - Petra Krämer
- Organisch-Chemisches InstitutUniversität Heidelberg Im Neuenheimer Feld 270 69120 Heidelberg Germany
| | - Matthias Rudolph
- Organisch-Chemisches InstitutUniversität Heidelberg Im Neuenheimer Feld 270 69120 Heidelberg Germany
| | - Frank Rominger
- Organisch-Chemisches InstitutUniversität Heidelberg Im Neuenheimer Feld 270 69120 Heidelberg Germany
| | - A. Stephen K. Hashmi
- Organisch-Chemisches InstitutUniversität Heidelberg Im Neuenheimer Feld 270 69120 Heidelberg Germany
- Chemistry DepartmentFaculty of ScienceKing Abdulaziz University Jeddah 21589 Saudi Arabia
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78
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Xie J, Sekine K, Witzel S, Krämer P, Rudolph M, Rominger F, Hashmi ASK. Light‐Induced Gold‐Catalyzed Hiyama Arylation: A Coupling Access to Biarylboronates. Angew Chem Int Ed Engl 2018; 57:16648-16653. [DOI: 10.1002/anie.201806427] [Citation(s) in RCA: 70] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2018] [Indexed: 11/07/2022]
Affiliation(s)
- Jin Xie
- State Key Laboratory of Coordination ChemistryJiangsu Key Laboratory of Advanced Organic MaterialsSchool of Chemistry and Chemical EngineeringNanjing University Nanjing 210023 P. R. China
| | - Kohei Sekine
- Organisch-Chemisches InstitutUniversität Heidelberg Im Neuenheimer Feld 270 69120 Heidelberg Germany
| | - Sina Witzel
- Organisch-Chemisches InstitutUniversität Heidelberg Im Neuenheimer Feld 270 69120 Heidelberg Germany
| | - Petra Krämer
- Organisch-Chemisches InstitutUniversität Heidelberg Im Neuenheimer Feld 270 69120 Heidelberg Germany
| | - Matthias Rudolph
- Organisch-Chemisches InstitutUniversität Heidelberg Im Neuenheimer Feld 270 69120 Heidelberg Germany
| | - Frank Rominger
- Organisch-Chemisches InstitutUniversität Heidelberg Im Neuenheimer Feld 270 69120 Heidelberg Germany
| | - A. Stephen K. Hashmi
- Organisch-Chemisches InstitutUniversität Heidelberg Im Neuenheimer Feld 270 69120 Heidelberg Germany
- Chemistry DepartmentFaculty of ScienceKing Abdulaziz University Jeddah 21589 Saudi Arabia
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79
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Witzel S, Sekine K, Rudolph M, Hashmi ASK. New transmetalation reagents for the gold-catalyzed visible light-enabled C(sp or sp 2)-C(sp 2) cross-coupling with aryldiazonium salts in the absence of a photosensitizer. Chem Commun (Camb) 2018; 54:13802-13804. [PMID: 30457609 DOI: 10.1039/c8cc08227h] [Citation(s) in RCA: 46] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
The scope of photosensitizer-free visible light-driven gold-catalyzed cross-coupling was evaluated by a wide variety of organoboron and organosilicon species using four equivalents of aryldiazonium salts and (4-CF3-C6H4)3PAuCl in MeOH. In addition, a C(sp or sp2)-C(sp2) cross-coupling of organotrimethylsilanes and aryldiazonium salts was investigated. The reactions can be conducted under very mild reaction conditions, with a reduced amount of aryldiazonium salt (1.2 equiv.) by using a catalytic amount of Ph3PAuNTf2 in MeCN under irradiation with blue LEDs at room temperature.
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Affiliation(s)
- Sina Witzel
- Organisch-Chemisches Institut, Ruprecht-Karls-Universität Heidelberg, Im Neuenheimer Feld 270, 69120 Heidelberg, Germany.
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80
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Banerjee S, Senthilkumar B, Patil NT. Gold-Catalyzed 1,2-Oxyalkynylation of N-Allenamides with Ethylnylbenziodoxolones. Org Lett 2018; 21:180-184. [DOI: 10.1021/acs.orglett.8b03651] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Somsuvra Banerjee
- Division of Organic Chemistry, CSIR—National Chemical Laboratory, Dr. Homi Bhabha Road, Pune − 411 008, India
- Academy of Scientific and Innovative Research, Ghaziabad − 201 002, India
| | - Beeran Senthilkumar
- Division of Organic Chemistry, CSIR—National Chemical Laboratory, Dr. Homi Bhabha Road, Pune − 411 008, India
- Academy of Scientific and Innovative Research, Ghaziabad − 201 002, India
| | - Nitin T. Patil
- Department of Chemistry, Indian Institute of Science Education and Research Bhopal, Bhauri, Bhopal − 462 066, India
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81
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Blons C, Mallet‐Ladeira S, Amgoune A, Bourissou D. (P,C) Cyclometalated Gold(III) Complexes: Highly Active Catalysts for the Hydroarylation of Alkynes. Angew Chem Int Ed Engl 2018; 57:11732-11736. [DOI: 10.1002/anie.201807106] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2018] [Indexed: 02/02/2023]
Affiliation(s)
- Charlie Blons
- CNRS/Université Paul SabatierLaboratoire Hétérochimie Fondamentale et Appliquée (LHFA, UMR 5069) 118 Route de Narbonne 31062 Toulouse Cedex 09 France
| | - Sonia Mallet‐Ladeira
- Institut de Chimie de Toulouse (FR 2599) 118 Route de Narbonne 31062 Toulouse Cedex 09 France
| | - Abderrahmane Amgoune
- CNRS/Université Paul SabatierLaboratoire Hétérochimie Fondamentale et Appliquée (LHFA, UMR 5069) 118 Route de Narbonne 31062 Toulouse Cedex 09 France
| | - Didier Bourissou
- CNRS/Université Paul SabatierLaboratoire Hétérochimie Fondamentale et Appliquée (LHFA, UMR 5069) 118 Route de Narbonne 31062 Toulouse Cedex 09 France
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82
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Barbero M, Dughera S. Gold catalysed Suzuki-Miyaura coupling of arenediazonium o-benzenedisulfonimides. Tetrahedron 2018. [DOI: 10.1016/j.tet.2018.08.018] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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83
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Bhattacharjee R, Datta A. Understanding Thermal and Photochemical Aryl-Aryl Cross-Coupling by the AuI
/AuIII
Redox Couple. Chemistry 2018; 24:13636-13646. [PMID: 29979474 DOI: 10.1002/chem.201802634] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2018] [Revised: 06/25/2018] [Indexed: 12/31/2022]
Affiliation(s)
- Rameswar Bhattacharjee
- Department of Spectroscopy; Indian Association for the, Cultivation of Science; Jadavpur 700032 West Bengal India
| | - Ayan Datta
- Department of Spectroscopy; Indian Association for the, Cultivation of Science; Jadavpur 700032 West Bengal India
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84
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Blons C, Mallet-Ladeira S, Amgoune A, Bourissou D. (P,C) Cyclometalated Gold(III) Complexes: Highly Active Catalysts for the Hydroarylation of Alkynes. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201807106] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Affiliation(s)
- Charlie Blons
- CNRS/Université Paul Sabatier; Laboratoire Hétérochimie Fondamentale et Appliquée (LHFA, UMR 5069); 118 Route de Narbonne 31062 Toulouse Cedex 09 France
| | - Sonia Mallet-Ladeira
- Institut de Chimie de Toulouse (FR 2599); 118 Route de Narbonne 31062 Toulouse Cedex 09 France
| | - Abderrahmane Amgoune
- CNRS/Université Paul Sabatier; Laboratoire Hétérochimie Fondamentale et Appliquée (LHFA, UMR 5069); 118 Route de Narbonne 31062 Toulouse Cedex 09 France
| | - Didier Bourissou
- CNRS/Université Paul Sabatier; Laboratoire Hétérochimie Fondamentale et Appliquée (LHFA, UMR 5069); 118 Route de Narbonne 31062 Toulouse Cedex 09 France
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85
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Messina MS, Stauber JM, Waddington MA, Rheingold AL, Maynard HD, Spokoyny AM. Organometallic Gold(III) Reagents for Cysteine Arylation. J Am Chem Soc 2018; 140:7065-7069. [PMID: 29790740 PMCID: PMC6491213 DOI: 10.1021/jacs.8b04115] [Citation(s) in RCA: 133] [Impact Index Per Article: 22.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
An efficient method for chemoselective cysteine arylation of unprotected peptides and proteins using Au(III) organometallic complexes is reported. The bioconjugation reactions proceed rapidly (<5 min) at ambient temperature in various buffers and within a wide pH range (0.5-14). This approach provides access to a diverse array of S-aryl bioconjugates including fluorescent dye, complex drug molecule, affinity label, poly(ethylene glycol) tags, and a stapled peptide. A library of Au(III) arylation reagents can be prepared as air-stable, crystalline solids in one step from commercial reagents. The selective and efficient arylation procedures presented in this work broaden the synthetic scope of cysteine bioconjugation and serve as promising routes for the modification of complex biomolecules.
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Affiliation(s)
- Marco S Messina
- Department of Chemistry and Biochemistry , University of California, Los Angeles , 607 Charles E. Young Drive East , Los Angeles , California 90095-1569 , United States
| | - Julia M Stauber
- Department of Chemistry and Biochemistry , University of California, Los Angeles , 607 Charles E. Young Drive East , Los Angeles , California 90095-1569 , United States
| | - Mary A Waddington
- Department of Chemistry and Biochemistry , University of California, Los Angeles , 607 Charles E. Young Drive East , Los Angeles , California 90095-1569 , United States
| | - Arnold L Rheingold
- Department of Chemistry and Biochemistry , University of California, San Diego , 9500 Gilman Drive , La Jolla , California 92093 , United States
| | - Heather D Maynard
- Department of Chemistry and Biochemistry , University of California, Los Angeles , 607 Charles E. Young Drive East , Los Angeles , California 90095-1569 , United States
- California NanoSystems Institute , University of California, Los Angeles , 570 Westwood Plaza , Los Angeles , California 90095-1569 , United States
| | - Alexander M Spokoyny
- Department of Chemistry and Biochemistry , University of California, Los Angeles , 607 Charles E. Young Drive East , Los Angeles , California 90095-1569 , United States
- California NanoSystems Institute , University of California, Los Angeles , 570 Westwood Plaza , Los Angeles , California 90095-1569 , United States
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86
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Wang J, Zhang S, Wojtas L, Shi X. Highly Efficient and Stereoselective Thioallylation of Alkynes: Possible Gold Redox Catalysis with No Need for a Strong Oxidant. Angew Chem Int Ed Engl 2018; 57:6915-6920. [PMID: 29663659 PMCID: PMC6121218 DOI: 10.1002/anie.201802540] [Citation(s) in RCA: 50] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2018] [Indexed: 11/07/2022]
Abstract
Stereoselective thioallylation of alkynes under possible gold redox catalysis was accomplished with high efficiency (as low as 0.1 % catalyst loading, up to 99 % yield) and broad substrate scope (various alkynes, inter- and intramolecular fashion). The gold(I) catalyst acts as both a π-acid for alkyne activation and a redox catalyst for AuI/III coupling, whereas the sulfonium cation generated in situ functions as a mild oxidant. This novel methodology provides an exciting system for gold redox catalysis without the need for a strong oxidant.
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Affiliation(s)
- Jin Wang
- Department of Chemistry, University of South Florida Tampa, FL 33620 (USA)
| | - Shuyao Zhang
- Department of Chemistry, University of South Florida Tampa, FL 33620 (USA)
| | - Lukasz Wojtas
- Department of Chemistry, University of South Florida Tampa, FL 33620 (USA)
| | - Xiaodong Shi
- Department of Chemistry, University of South Florida Tampa, FL 33620 (USA)
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87
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Wang J, Zhang S, Xu C, Wojtas L, Akhmedov NG, Chen H, Shi X. Highly Efficient and Stereoselective Thioallylation of Alkynes: Possible Gold Redox Catalysis with No Need for a Strong Oxidant. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201802540] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Jin Wang
- Department of Chemistry University of South Florida Tampa FL 33620 USA
| | - Shuyao Zhang
- Department of Chemistry University of South Florida Tampa FL 33620 USA
| | - Chang Xu
- Department of Chemistry and Biochemistry Ohio University Athens OH 45791 USA
| | - Lukasz Wojtas
- Department of Chemistry University of South Florida Tampa FL 33620 USA
| | - Novruz G. Akhmedov
- C. Eugene Bennett Department of Chemistry West Virginia University Morgantown WV 26506 USA
| | - Hao Chen
- Department of Chemistry and Biochemistry Ohio University Athens OH 45791 USA
| | - Xiaodong Shi
- Department of Chemistry University of South Florida Tampa FL 33620 USA
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88
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Harper MJ, Arthur CJ, Crosby J, Emmett EJ, Falconer RL, Fensham-Smith AJ, Gates PJ, Leman T, McGrady JE, Bower JF, Russell CA. Oxidative Addition, Transmetalation, and Reductive Elimination at a 2,2'-Bipyridyl-Ligated Gold Center. J Am Chem Soc 2018; 140:4440-4445. [PMID: 29553258 DOI: 10.1021/jacs.8b01411] [Citation(s) in RCA: 84] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
Three-coordinate bipyridyl complexes of gold, [(κ2-bipy)Au(η2-C2H4)][NTf2], are readily accessed by direct reaction of 2,2'-bipyridine (bipy), or its derivatives, with the homoleptic gold ethylene complex [Au(C2H4)3][NTf2]. The cheap and readily available bipyridyl ligands facilitate oxidative addition of aryl iodides to the Au(I) center to give [(κ2-bipy)Au(Ar)I][NTf2], which undergo first aryl-zinc transmetalation and second C-C reductive elimination to produce biaryl products. The products of each distinct step have been characterized. Computational techniques are used to probe the mechanism of the oxidative addition step, offering insight into both the origin of the reversibility of this process and the observation that electron-rich aryl iodides add faster than electron-poor substrates. Thus, for the first time, all steps that are characteristic of a conventional intermolecular Pd(0)-catalyzed biaryl synthesis are demonstrated from a common monometallic Au complex and in the absence of directing groups.
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Affiliation(s)
- Matthew J Harper
- School of Chemistry , University of Bristol , Bristol , BS8 1TS , United Kingdom
| | - Christopher J Arthur
- School of Chemistry , University of Bristol , Bristol , BS8 1TS , United Kingdom
| | - John Crosby
- School of Chemistry , University of Bristol , Bristol , BS8 1TS , United Kingdom
| | - Edward J Emmett
- Syngenta, Jealott's Hill International Research Centre , Bracknell , Berkshire RG42 6EY , United Kingdom
| | - Rosalyn L Falconer
- School of Chemistry , University of Bristol , Bristol , BS8 1TS , United Kingdom
| | | | - Paul J Gates
- School of Chemistry , University of Bristol , Bristol , BS8 1TS , United Kingdom
| | - Thomas Leman
- School of Chemistry , University of Bristol , Bristol , BS8 1TS , United Kingdom
| | - John E McGrady
- Department of Chemistry , University of Oxford , South Parks Road , Oxford , OX1 3QZ , United Kingdom
| | - John F Bower
- School of Chemistry , University of Bristol , Bristol , BS8 1TS , United Kingdom
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89
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Qu C, Zhang S, Du H, Zhu C. Cascade photoredox/gold catalysis: access to multisubstituted indoles via aminoarylation of alkynes. Chem Commun (Camb) 2018; 52:14400-14403. [PMID: 27892551 DOI: 10.1039/c6cc08478h] [Citation(s) in RCA: 42] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
A new method for the synthesis of 3-arylindoles has been developed by visible light mediated dual gold/photoredox catalysis. This transformation has many features such as cascade catalysis, high efficiency, redox-neutral reaction conditions and good functional group tolerance. The reaction proceeds through the photoredox-promoted formation of an electrophilic arylgold(iii) intermediate that undergoes coupling with the arylamine nucleophile.
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Affiliation(s)
- Chuanhua Qu
- State Key Laboratory of Coordination Chemistry, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, P. R. China.
| | - Songlin Zhang
- State Key Laboratory of Coordination Chemistry, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, P. R. China.
| | - Hongbin Du
- State Key Laboratory of Coordination Chemistry, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, P. R. China.
| | - Chengjian Zhu
- State Key Laboratory of Coordination Chemistry, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, P. R. China. and Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai, 200032, China
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90
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Currie L, Rocchigiani L, Hughes DL, Bochmann M. Carbon–sulfur bond formation by reductive elimination of gold(iii) thiolates. Dalton Trans 2018; 47:6333-6343. [DOI: 10.1039/c8dt00906f] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Thiols were found to cleave Au–C bonds in (C^N^C)gold(iii) pincer complexes and to induce C–S reductive elimination reactions, to give aryl thioethers.
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Affiliation(s)
- Lucy Currie
- School of Chemistry
- University of East Anglia
- Norwich NR4 7TJ
- UK
| | | | - David L. Hughes
- School of Chemistry
- University of East Anglia
- Norwich NR4 7TJ
- UK
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91
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Akram MO, Shinde PS, Chintawar CC, Patil NT. Gold(i)-catalyzed cross-coupling reactions of aryldiazonium salts with organostannanes. Org Biomol Chem 2018; 16:2865-2869. [DOI: 10.1039/c8ob00630j] [Citation(s) in RCA: 34] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
Gold(i)-catalyzed cross-coupling reactions of aryldiazonium salts with organostannanes are described.
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Affiliation(s)
- Manjur O. Akram
- Division of Organic Chemistry
- CSIR – National Chemical Laboratory
- Pune – 411 008
- India
- Academy of Scientific and Innovative Research (AcSIR)
| | - Popat S. Shinde
- Division of Organic Chemistry
- CSIR – National Chemical Laboratory
- Pune – 411 008
- India
- Academy of Scientific and Innovative Research (AcSIR)
| | - Chetan C. Chintawar
- 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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92
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Carrillo-Arcos UA, Porcel S. Gold promoted arylative cyclization of alkynoic acids with arenediazonium salts. Org Biomol Chem 2018; 16:1837-1842. [DOI: 10.1039/c7ob02447a] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
Arylgold(iii) species generated from arenediazonium salts and Au(i) under thermal conditions promote the arylative cyclization of alkynoic acids leading to tetrasubstituted lactones.
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Affiliation(s)
| | - Susana Porcel
- Instituto de Química
- Universidad Nacional Autónoma de México
- 04510 México D.F
- Mexico
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93
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Chakrabarty I, Akram MO, Biswas S, Patil NT. Visible light mediated desilylative C(sp2)–C(sp2) cross-coupling reactions of arylsilanes with aryldiazonium salts under Au(i)/Au(iii) catalysis. Chem Commun (Camb) 2018; 54:7223-7226. [DOI: 10.1039/c8cc03925a] [Citation(s) in RCA: 43] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Desilylative C(sp2)–C(sp2) cross-coupling reactions of arylsilanes with aryldiazonium salts under Au(i)/photoredox catalysis have been reported.
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Affiliation(s)
- Indradweep Chakrabarty
- Division of Organic Chemistry
- CSIR – National Chemical Laboratory
- Dr Homi Bhabha Road
- Pune
- India
| | - Manjur O. Akram
- Division of Organic Chemistry
- CSIR – National Chemical Laboratory
- Dr Homi Bhabha Road
- Pune
- India
| | - Suprakash Biswas
- Department of Chemistry
- Indian Institute of Science Education and Research Bhopal
- Bhauri
- Bhopal
- India
| | - Nitin T. Patil
- Department of Chemistry
- Indian Institute of Science Education and Research Bhopal
- Bhauri
- Bhopal
- India
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94
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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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95
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Tabey A, Berlande M, Hermange P, Fouquet E. Mechanistic and asymmetric investigations of the Au-catalysed cross-coupling between aryldiazonium salts and arylboronic acids using (P,N) gold complexes. Chem Commun (Camb) 2018; 54:12867-12870. [DOI: 10.1039/c8cc07530a] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Aryldiazonium salts and arylboronic acids were coupled via three different pathways from (P,N)–AuCl complexes, with enantiomeric excesses up to 26%.
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Affiliation(s)
- Alexis Tabey
- Univ. Bordeaux
- Institut des Sciences Moléculaires
- UMR-CNRS 5255
- 33405 Talence Cedex
- France
| | - Murielle Berlande
- Univ. Bordeaux
- Institut des Sciences Moléculaires
- UMR-CNRS 5255
- 33405 Talence Cedex
- France
| | - Philippe Hermange
- Univ. Bordeaux
- Institut des Sciences Moléculaires
- UMR-CNRS 5255
- 33405 Talence Cedex
- France
| | - Eric Fouquet
- Univ. Bordeaux
- Institut des Sciences Moléculaires
- UMR-CNRS 5255
- 33405 Talence Cedex
- France
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96
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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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97
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Sauer C, Liu Y, De Nisi A, Protti S, Fagnoni M, Bandini M. Photocatalyst-free, Visible Light Driven, Gold Promoted Suzuki Synthesis of (Hetero)biaryls. ChemCatChem 2017. [DOI: 10.1002/cctc.201701436] [Citation(s) in RCA: 48] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Christopher Sauer
- Dipartimento di Chimica “G. Ciamician”; Alma Mater Studiorum-Università di Bologna; Via Selmi 2 40126 Bologna Italy
| | - Yang Liu
- Dipartimento di Chimica “G. Ciamician”; Alma Mater Studiorum-Università di Bologna; Via Selmi 2 40126 Bologna Italy
| | - Assunta De Nisi
- Dipartimento di Chimica “G. Ciamician”; Alma Mater Studiorum-Università di Bologna; Via Selmi 2 40126 Bologna Italy
| | - Stefano Protti
- PhotoGreen Lab; Department of Chemistry; University of Pavia; V.le Taramelli 10 27100 Pavia Italy
| | - Maurizio Fagnoni
- PhotoGreen Lab; Department of Chemistry; University of Pavia; V.le Taramelli 10 27100 Pavia Italy
| | - Marco Bandini
- Dipartimento di Chimica “G. Ciamician”; Alma Mater Studiorum-Università di Bologna; Via Selmi 2 40126 Bologna Italy
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98
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Gentleman AS, Green AE, Price DR, Cunningham EM, Iskra A, Mackenzie SR. Infrared Spectroscopy of Au +(CH 4) n Complexes and Vibrationally-Enhanced C-H Activation Reactions. Top Catal 2017; 61:81-91. [PMID: 31258301 PMCID: PMC6560929 DOI: 10.1007/s11244-017-0868-z] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
A combined spectroscopic and computational study of gas-phase Au+(CH4)n (n = 3–8) complexes reveals a strongly-bound linear Au+(CH4)2 core structure to which up to four additional ligands bind in a secondary coordination shell. Infrared resonance-enhanced photodissociation spectroscopy in the region of the CH4a1 and t2 fundamental transitions reveals essentially free internal rotation of the core ligands about the H4C–Au+–CH4 axis, with sharp spectral features assigned by comparison with spectral simulations based on density functional theory. In separate experiments, vibrationally-enhanced dehydrogenation is observed when the t2 vibrational normal mode in methane is excited prior to complexation. Clear infrared-induced enhancement is observed in the mass spectrum for peaks corresponding 4u below the mass of the Au+(CH4)n=2,3 complexes corresponding, presumably, to the loss of two H2 molecules.
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Affiliation(s)
- Alexander S Gentleman
- Physical and Theoretical Chemistry Laboratory, Department of Chemistry, University of Oxford, South Parks Road, Oxford, OX1 3QZ UK
| | - Alice E Green
- Physical and Theoretical Chemistry Laboratory, Department of Chemistry, University of Oxford, South Parks Road, Oxford, OX1 3QZ UK
| | - Daniel R Price
- Physical and Theoretical Chemistry Laboratory, Department of Chemistry, University of Oxford, South Parks Road, Oxford, OX1 3QZ UK
| | - Ethan M Cunningham
- Physical and Theoretical Chemistry Laboratory, Department of Chemistry, University of Oxford, South Parks Road, Oxford, OX1 3QZ UK
| | - Andreas Iskra
- Physical and Theoretical Chemistry Laboratory, Department of Chemistry, University of Oxford, South Parks Road, Oxford, OX1 3QZ UK
| | - Stuart R Mackenzie
- Physical and Theoretical Chemistry Laboratory, Department of Chemistry, University of Oxford, South Parks Road, Oxford, OX1 3QZ UK
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99
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Price GA, Brisdon AK, Randall S, Lewis E, Whittaker DM, Pritchard RG, Muryn CA, Flower KR, Quayle P. Some insights into the gold-catalysed A 3 -coupling reaction. J Organomet Chem 2017. [DOI: 10.1016/j.jorganchem.2017.06.019] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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100
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Rational development of catalytic Au(I)/Au(III) arylation involving mild oxidative addition of aryl halides. Nat Commun 2017; 8:565. [PMID: 28924193 PMCID: PMC5603523 DOI: 10.1038/s41467-017-00672-8] [Citation(s) in RCA: 164] [Impact Index Per Article: 23.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2017] [Accepted: 07/19/2017] [Indexed: 11/19/2022] Open
Abstract
The reluctance of gold to achieve oxidative addition reaction is considered as an intrinsic limitation for the development of gold-catalyzed cross-coupling reactions with simple and ubiquitous aryl halide electrophiles. Here, we report the rational construction of a Au(I)/Au(III) catalytic cycle involving a sequence of Csp2–X oxidative addition, Csp2–H auration and reductive elimination, allowing a gold-catalyzed direct arylation of arenes with aryl halides. Key to this discovery is the use of Me-Dalphos, a simple ancillary (P,N) ligand, that allows the bottleneck oxidative addition of aryl iodides and bromides to readily proceed under mild conditions. The hemilabile character of the amino group plays a crucial role in this transformation, as substantiated by density functional theory calculations. Catalysis involving Au(I)/Au(III) cycles are notoriously hampered by the reluctance of Au(I) towards oxidative addition. Here, the authors show that an hemilabile bidentate ligand promotes oxidative addition of aryl halides to Au(I) and the catalytic formation of biaryl coupling products.
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