51
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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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52
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Jin Q, Ma L, Zhou W, Shen Y, Fernandez-Delgado O, Li X. Smart paper transformer: new insight for enhanced catalytic efficiency and reusability of noble metal nanocatalysts. Chem Sci 2020; 11:2915-2925. [PMID: 34122792 PMCID: PMC8157501 DOI: 10.1039/c9sc05287a] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023] Open
Abstract
Although noble metal nanocatalysts show superior performance to conventional catalysts, they can be problematic when balancing catalytic efficiency and reusability. In order to address this dilemma, we developed a smart paper transformer (s-PAT) to support nanocatalysts, based on easy phase conversion between paper and pulp, for the first time. The pulp phase was used to maintain the high catalytic efficiency of the nanocatalysts and the transformation to paper enabled their high reusability. Herein, as an example of smart paper transformers, a novel chromatography paper-supported Au nanosponge (AuNS/pulp) catalyst was developed through a simple water-based preparation process for the successful reduction of p-nitrophenol to demonstrate the high catalytic efficiency and reusability of the noble metal nanocatalyst/pulp system. The composition, structure, and morphology of the AuNS/pulp catalyst were characterized by XRD, TGA, FE-SEM, ICP, TEM, FT-IR, and XPS. The AuNS/pulp catalyst was transformed into the pulp phase during the catalytic reaction and into the paper phase to recover the catalysts after use. Owing to this smart switching of physical morphology, the AuNS/pulp catalyst was dispersed more evenly in the solution. Therefore, it exhibited excellent catalytic performance for p-nitrophenol reduction. Under optimal conditions, the conversion rate of p-nitrophenol reached nearly 100% within 6 min and the k value of AuNS/pulp (0.0106 s−1) was more than twice that of a traditional chromatography paper-based catalyst (0.0048 s−1). Additionally, it exhibited outstanding reusability and could maintain its high catalytic efficiency even after fifteen recycling runs. Accordingly, the unique phase switching of this smart paper transformer enables Au nanosponge to transform into a highly efficient and cost-effective multifunctional catalyst. The paper transformer can support various nanocatalysts for a wide range of applications, thus providing a new insight into maintaining both high catalytic efficiency and reusability of nanocatalysts in the fields of environmental catalysis and nanomaterials. A smart paper transformer supported nanocatalyst platform is developed based on the facile phase conversion between paper and pulp for both high-efficiency and high-reusability catalysis, with wide applications demonstrated by using Au nanosponge.![]()
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Affiliation(s)
- Qijie Jin
- Department of Chemistry and Biochemistry, University of Texas at El Paso El Paso Texas 79968 USA .,College of Materials Science and Engineering, Nanjing Tech University Nanjing 210009 PR China
| | - Lei Ma
- Department of Chemistry and Biochemistry, University of Texas at El Paso El Paso Texas 79968 USA
| | - Wan Zhou
- Department of Chemistry and Biochemistry, University of Texas at El Paso El Paso Texas 79968 USA
| | - Yuesong Shen
- College of Materials Science and Engineering, Nanjing Tech University Nanjing 210009 PR China
| | - Olivia Fernandez-Delgado
- Department of Chemistry and Biochemistry, University of Texas at El Paso El Paso Texas 79968 USA
| | - XiuJun Li
- Department of Chemistry and Biochemistry, University of Texas at El Paso El Paso Texas 79968 USA .,Biomedical Engineering, Border Biomedical Research Center, University of Texas at El Paso El Paso Texas 79968 USA.,Environmental Science and Engineering, University of Texas at El Paso El Paso Texas 79968 USA
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53
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Panigrahi A, Whitaker D, Vitorica-Yrezabal IJ, Larrosa I. Ag/Pd Cocatalyzed Direct Arylation of Fluoroarene Derivatives with Aryl Bromides. ACS Catal 2020; 10:2100-2107. [PMID: 32201633 PMCID: PMC7079724 DOI: 10.1021/acscatal.9b05334] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2019] [Revised: 01/09/2020] [Indexed: 12/24/2022]
Abstract
Diverse C-H functionalizations catalyzed by Pd employ Ag(I) salts added as halide abstractors or oxidants. Recent reports have shown that Ag can also perform the crucial C-H activation step in several of these functionalizations. However, all of these processes are limited by the wasteful requirement for (super)stoichiometric Ag(I) salts. Herein, we report the development of a Ag/Pd cocatalyzed direct arylation of (fluoroarene) chromium tricarbonyl complexes with bromoarenes. The small organic salt, NMe4OC(CF3)3, added as a halide abstractor, enables the use of a catalytic amount of Ag, reversing the rapid precipitation of AgBr. We have shown through H/D scrambling and kinetic studies that a (PR3)Ag-alkoxide is responsible for C-H activation, a departure from previous studies with Ag carboxylates. Furthermore, the construction of biaryls directly from the simple arene is achieved via a one-pot chromium tricarbonyl complexation/C-H arylation/decomplexation sequence using (pyrene)Cr(CO)3 as a Cr(CO)3 donor.
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Affiliation(s)
- Adyasha Panigrahi
- School of Chemistry, University of Manchester, Oxford Road, Manchester M13 9PL, U.K
| | - Daniel Whitaker
- School of Chemistry, University of Manchester, Oxford Road, Manchester M13 9PL, U.K
| | | | - Igor Larrosa
- School of Chemistry, University of Manchester, Oxford Road, Manchester M13 9PL, U.K
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54
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Liu B, Qiu H, Chen X, Li W, Zhang J. Copper-catalyzed asymmetric tandem borylative addition and aldol cyclization. Org Chem Front 2020. [DOI: 10.1039/d0qo00654h] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A highly enantioselective asymmetric copper-catalyzed tandem conjugate addition/aldol cyclization of electron-deficient olefins with B2pin2 was developed, which provided a rapid access to indanes bearing three consecutive chiral stereogenic centers.
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Affiliation(s)
- Bing Liu
- National Doping Test Laboratory Shanghai
- Shanghai University of Sport
- Shanghai
- P. R. China
| | - Haile Qiu
- Department of Chemistry
- East China Normal University
- Shanghai
- P. R. China
| | - Xiaofeng Chen
- Department of Chemistry
- East China Normal University
- Shanghai
- P. R. China
| | - Wenbo Li
- Department of Chemistry
- East China Normal University
- Shanghai
- P. R. China
| | - Junliang Zhang
- Department of Chemistry
- Fudan University
- Shanghai 200438
- P. R. China
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55
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Gu Y, Sun X, Wan B, Lu Z, Zhang Y. C(sp3)–H activation-enabled cross-coupling of two aryl halides: an approach to 9,10-dihydrophenanthrenes. Chem Commun (Camb) 2020; 56:10942-10945. [DOI: 10.1039/d0cc04602g] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Abstract
A palladium-catalyzed cross-coupling reaction of aryl halides with 2-chlorobenzoic acids has been developed through C(sp3)–H activation, which provides an innovative method for the synthesis of 9,10-dihydrophenanthren.
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Affiliation(s)
- Yichao Gu
- School of Chemical Science and Engineering
- Shanghai Key Laboratory of Chemical Assessment and Sustainability
- Tongji University
- Shanghai 200092
- China
| | - Xueliang Sun
- School of Chemical Science and Engineering
- Shanghai Key Laboratory of Chemical Assessment and Sustainability
- Tongji University
- Shanghai 200092
- China
| | - Bin Wan
- School of Chemical Science and Engineering
- Shanghai Key Laboratory of Chemical Assessment and Sustainability
- Tongji University
- Shanghai 200092
- China
| | - Zhuoer Lu
- School of Chemical Science and Engineering
- Shanghai Key Laboratory of Chemical Assessment and Sustainability
- Tongji University
- Shanghai 200092
- China
| | - Yanghui Zhang
- School of Chemical Science and Engineering
- Shanghai Key Laboratory of Chemical Assessment and Sustainability
- Tongji University
- Shanghai 200092
- China
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56
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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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57
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Wang J, Zhan L, Wang G, Wei Y, Shi M, Zhang J. Pd-Promoted cross coupling of iodobenzene with vinylgold via an unprecedented phenyl transmetalation from Pd to Au. Chem Commun (Camb) 2020; 56:6213-6216. [DOI: 10.1039/d0cc02645j] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Abstract
Oxidative addition of Pd/Au vinylene species with iodobenzene reveals the effect of a strong metallophilic Pd⋯Au interaction on phenyl transmetalation from PdIV to AuI, which allows subsequent reductive elimination of LAuI at Pd and Au.
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Affiliation(s)
- Jiwei Wang
- Key Laboratory for Advanced Materials and Joint International Research Laboratory of Precision Chemistry and Molecular Engineering
- Feringa Nobel Prize Scientist Joint Research Center
- School of Chemistry and Molecular Engineering
- East China University of Science and Technology
- Shanghai 200237
| | - Licheng Zhan
- Key Laboratory for Advanced Materials and Joint International Research Laboratory of Precision Chemistry and Molecular Engineering
- Feringa Nobel Prize Scientist Joint Research Center
- School of Chemistry and Molecular Engineering
- East China University of Science and Technology
- Shanghai 200237
| | - Gendi Wang
- Key Laboratory for Advanced Materials and Joint International Research Laboratory of Precision Chemistry and Molecular Engineering
- Feringa Nobel Prize Scientist Joint Research Center
- School of Chemistry and Molecular Engineering
- East China University of Science and Technology
- Shanghai 200237
| | - Yin Wei
- State Key Laboratory of Organometallic Chemistry
- Shanghai Institute of Organic Chemistry
- Chinese Academy of Sciences
- Shanghai 200032
- China
| | - Min Shi
- Key Laboratory for Advanced Materials and Joint International Research Laboratory of Precision Chemistry and Molecular Engineering
- Feringa Nobel Prize Scientist Joint Research Center
- School of Chemistry and Molecular Engineering
- East China University of Science and Technology
- Shanghai 200237
| | - Jun Zhang
- Key Laboratory for Advanced Materials and Joint International Research Laboratory of Precision Chemistry and Molecular Engineering
- Feringa Nobel Prize Scientist Joint Research Center
- School of Chemistry and Molecular Engineering
- East China University of Science and Technology
- Shanghai 200237
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58
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Faßbender SI, Molloy JJ, Mück‐Lichtenfeld C, Gilmour R. Geometric E→Z Isomerisation of Alkenyl Silanes by Selective Energy Transfer Catalysis: Stereodivergent Synthesis of Triarylethylenes via a Formal anti-Metallometallation. Angew Chem Int Ed Engl 2019; 58:18619-18626. [PMID: 31541612 PMCID: PMC6916377 DOI: 10.1002/anie.201910169] [Citation(s) in RCA: 44] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2019] [Indexed: 12/30/2022]
Abstract
An efficient geometrical E→Z isomerisation of alkenyl silanes is disclosed via selective energy transfer using an inexpensive organic sensitiser. Characterised by operational simplicity, short reaction times (2 h), and broad substrate tolerance, the reaction displays high selectivity for trisubstituted systems (Z/E up to 95:5). In contrast to thermal activation, directionality results from deconjugation of the π-system in the Z-isomer due to A1,3 -strain thereby inhibiting re-activation. The structural importance of the β-substituent logically prompted an investigation of mixed bis-nucleophiles (Si, Sn, B). These versatile linchpins also undergo facile isomerisation, thereby enabling a formal anti-metallometallation. Mechanistic interrogation, supported by a theoretical investigation, is disclosed together with application of the products to the stereospecific synthesis of biologically relevant target structures.
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Affiliation(s)
- Svenja I. Faßbender
- Organisch Chemisches InstitutWestfälische Wilhelms-Universität MünsterCorrensstraße 4048149MünsterGermany
| | - John J. Molloy
- Organisch Chemisches InstitutWestfälische Wilhelms-Universität MünsterCorrensstraße 4048149MünsterGermany
| | - Christian Mück‐Lichtenfeld
- Organisch Chemisches InstitutWestfälische Wilhelms-Universität MünsterCorrensstraße 4048149MünsterGermany
| | - Ryan Gilmour
- Organisch Chemisches InstitutWestfälische Wilhelms-Universität MünsterCorrensstraße 4048149MünsterGermany
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59
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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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60
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Faßbender SI, Molloy JJ, Mück‐Lichtenfeld C, Gilmour R. Geometric
E
→
Z
Isomerisation of Alkenyl Silanes by Selective Energy Transfer Catalysis: Stereodivergent Synthesis of Triarylethylenes via a Formal
anti
‐Metallometallation. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201910169] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Svenja I. Faßbender
- Organisch Chemisches InstitutWestfälische Wilhelms-Universität Münster Corrensstraße 40 48149 Münster Germany
| | - John J. Molloy
- Organisch Chemisches InstitutWestfälische Wilhelms-Universität Münster Corrensstraße 40 48149 Münster Germany
| | - Christian Mück‐Lichtenfeld
- Organisch Chemisches InstitutWestfälische Wilhelms-Universität Münster Corrensstraße 40 48149 Münster Germany
| | - Ryan Gilmour
- Organisch Chemisches InstitutWestfälische Wilhelms-Universität Münster Corrensstraße 40 48149 Münster Germany
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61
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Fricke C, Dahiya A, Reid WB, Schoenebeck F. Gold-Catalyzed C-H Functionalization with Aryl Germanes. ACS Catal 2019; 9:9231-9236. [PMID: 31608162 PMCID: PMC6781487 DOI: 10.1021/acscatal.9b02841] [Citation(s) in RCA: 71] [Impact Index Per Article: 14.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2019] [Revised: 08/26/2019] [Indexed: 12/12/2022]
Abstract
The development of orthogonal Csp2 -Csp2 coupling regimes to the omnipresent Pd-catalysis class would enable an additional dimension of modularity in the construction of densely functionalized biaryl motifs. In this context, the identification of potent functional groups for selective transformations is in high demand. Although organogermanium compounds are generally believed to be of low reactivity in homogenous catalysis, this report discloses the highly efficient and orthogonal reactivity of aryl germanes with arenes under gold catalysis. The method is characterized by mildness, the employment of an air- and moisture-stable gold catalyst, and robustness. Our mechanistic studies show that aryl germanes are highly reactive with Au(I) and Au(III). Our computational data suggest that the origin of this reactivity primarily lies in the relatively low bond dissociation energy and as such low distortion energy to reach the key bond activating transition state.
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Affiliation(s)
- Christoph Fricke
- Institute of Organic Chemistry, RWTH Aachen University, Landoltweg 1, 52074 Aachen, Germany
| | - Amit Dahiya
- 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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62
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63
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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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64
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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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65
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Beucher H, Merino E, Genoux A, Fox T, Nevado C. κ 3 -(N^C^C)Gold(III) Carboxylates: Evidence for Decarbonylation Processes. Angew Chem Int Ed Engl 2019; 58:9064-9067. [PMID: 31059173 DOI: 10.1002/anie.201903098] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2019] [Revised: 04/23/2019] [Indexed: 11/08/2022]
Abstract
Gold(III) carboxylate species, stabilized by a κ3 -(N^C^C) ligand template, are presented herein. A η1 -AuIII -C(O)-OH species has been characterized under cryogenic conditions as a result of the nucleophilic attack of an ammonium hydroxide onto a dinuclear μ-CO2 -κ3 -(N^C^C)AuIII precursor. Thermal decomposition for these species proceeds by an unusual decarbonylation process, in contrast to typical decarboxylation pathways observed in related metallocarboxylic acids.
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Affiliation(s)
- Hélène Beucher
- Department of Chemistry, University of Zürich, Winterthurerstrasse 190, 8057, Zürich, Switzerland
| | - Estíbaliz Merino
- Department of Chemistry, University of Zürich, Winterthurerstrasse 190, 8057, Zürich, Switzerland
| | - Alexandre Genoux
- Department of Chemistry, University of Zürich, Winterthurerstrasse 190, 8057, Zürich, Switzerland
| | - Thomas Fox
- 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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66
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Abstract
Dicationic fluorenyl cations are shown to react with nitriles to provide amide-functionalized fluorenes. A similar reaction with alcohols gives ether derivatives. The chemistry is initiated by the reactions of N-heterocyclic ketones in a superacidic solution. This leads to cyclizations involving 2-biphenyl groups and formation of the reactive fluorenyl cations.
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Affiliation(s)
- Michael R. Stentzel
- Department of Chemistry and Biochemistry, Northern Illinois University, DeKalb, IL 60115, United States
| | - Douglas A. Klumpp
- Department of Chemistry and Biochemistry, Northern Illinois University, DeKalb, IL 60115, United States
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67
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Amin HIM, Raviola C, Amin AA, Mannucci B, Protti S, Fagnoni M. Hydro/Deutero Deamination of Arylazo Sulfones under Metal- and (Photo)Catalyst-Free Conditions. Molecules 2019; 24:E2164. [PMID: 31181774 PMCID: PMC6601019 DOI: 10.3390/molecules24112164] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2019] [Revised: 06/03/2019] [Accepted: 06/05/2019] [Indexed: 11/17/2022] Open
Abstract
Hydrodeaminated and monodeuterated aromatics were obtained via a visible-light driven reaction of arylazo sulfones. Deuteration occurs efficiently in deuterated media such as isopropanol-d8 or in THF-d8/water mixtures and exhibits a high tolerance to the nature and the position of the aromatic substituents.
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Affiliation(s)
- Hawraz I M Amin
- PhotoGreen Lab, Department of Chemistry, University of Pavia. Viale Taramelli 12, 27100 Pavia, Italy.
- Chemistry Department, College of Science, Salahaddin University-Erbil, Erbil 44001, Iraq.
| | - Carlotta Raviola
- PhotoGreen Lab, Department of Chemistry, University of Pavia. Viale Taramelli 12, 27100 Pavia, Italy.
| | - Ahmed A Amin
- Chemistry Department, College of Education, Salahaddin University-Erbil, Erbil 44001, Iraq.
| | - Barbara Mannucci
- Centro Grandi Strumenti (CGS), University of Pavia, V. Bassi 21, 27100 Pavia, Italy.
| | - Stefano Protti
- PhotoGreen Lab, Department of Chemistry, University of Pavia. Viale Taramelli 12, 27100 Pavia, Italy.
| | - Maurizio Fagnoni
- PhotoGreen Lab, Department of Chemistry, University of Pavia. Viale Taramelli 12, 27100 Pavia, Italy.
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68
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Wenzel MN, Bonsignore R, Thomas SR, Bourissou D, Barone G, Casini A. Cyclometalated Au III Complexes for Cysteine Arylation in Zinc Finger Protein Domains: towards Controlled Reductive Elimination. Chemistry 2019; 25:7628-7634. [PMID: 30990916 PMCID: PMC6594228 DOI: 10.1002/chem.201901535] [Citation(s) in RCA: 45] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2019] [Indexed: 12/14/2022]
Abstract
With the aim of exploiting the use of organometallic species for the efficient modification of proteins through C-atom transfer, the gold-mediated cysteine arylation through a reductive elimination process occurring from the reaction of cyclometalated AuIII C^N complexes with a zinc finger peptide (Cys2 His2 type) is here reported. Among the four selected AuIII cyclometalated compounds, the [Au(CCO N)Cl2 ] complex featuring the 2-benzoylpyridine (CCO N) scaffold was identified as the most prone to reductive elimination and Cys arylation in buffered aqueous solution (pH 7.4) at 37 °C by high-resolution LC electrospray ionization mass spectrometry. DFT and quantum mechanics/molecular mechanics (QM/MM) studies permitted to propose a mechanism for the title reaction that is in line with the experimental results. Overall, the results provide new insights into the reactivity of cytotoxic organogold compounds with biologically important zinc finger domains and identify initial structure-activity relationships to enable AuIII -catalyzed reductive elimination in aqueous media.
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Affiliation(s)
- Margot N. Wenzel
- School of ChemistryCardiff UniversityMain Building, Park PlaceCF10 3ATCardiffUK
| | - Riccardo Bonsignore
- School of ChemistryCardiff UniversityMain Building, Park PlaceCF10 3ATCardiffUK
| | - Sophie R. Thomas
- 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 di PalermoViale delle Scienze, Edificio 1790128PalermoItaly
| | - Angela Casini
- School of ChemistryCardiff UniversityMain Building, Park PlaceCF10 3ATCardiffUK
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69
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Beucher H, Merino E, Genoux A, Fox T, Nevado C. κ
3
‐(N^C^C)Gold(III) Carboxylates: Evidence for Decarbonylation Processes. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201903098] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Hélène Beucher
- Department of ChemistryUniversity of Zürich Winterthurerstrasse 190 8057 Zürich Switzerland
| | - Estíbaliz Merino
- Department of ChemistryUniversity of Zürich Winterthurerstrasse 190 8057 Zürich Switzerland
| | - Alexandre Genoux
- Department of ChemistryUniversity of Zürich Winterthurerstrasse 190 8057 Zürich Switzerland
| | - Thomas Fox
- Department of ChemistryUniversity of Zürich Winterthurerstrasse 190 8057 Zürich Switzerland
| | - Cristina Nevado
- Department of ChemistryUniversity of Zürich Winterthurerstrasse 190 8057 Zürich Switzerland
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70
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Kaiser RP, Caivano I, Kotora M. Transition-metal-catalyzed methods for synthesis of fluorenes. Tetrahedron 2019. [DOI: 10.1016/j.tet.2019.04.045] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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71
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Liu Y, Bergès J, Zaid Y, Chahdi FO, Van Der Lee A, Harakat D, Clot E, Jaroschik F, Taillefer M. Aerobic and Ligand-Free Manganese-Catalyzed Homocoupling of Arenes or Aryl Halides via in Situ Formation of Aryllithiums. J Org Chem 2019; 84:4413-4420. [PMID: 30665303 DOI: 10.1021/acs.joc.8b02834] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Ligand-free manganese-catalyzed homocoupling of arenes or aryl halides can be carried out under aerobic conditions via the in situ formation of the corresponding aryllithiums. A wide range of biaryls and derivatives has been obtained, and a mechanism involving monomeric manganese-oxo complexes has been proposed on the basis of DFT calculations.
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Affiliation(s)
- Yujia Liu
- Institut Charles Gerhardt Montpellier , Université de Montpellier , UMR 5253 CNRS, ENSCM, 8 rue de l'Ecole Normale , Montpellier 34296 , France
| | - Julien Bergès
- Institut Charles Gerhardt Montpellier , Université de Montpellier , UMR 5253 CNRS, ENSCM, 8 rue de l'Ecole Normale , Montpellier 34296 , France
| | - Yassir Zaid
- Institut Charles Gerhardt Montpellier , Université de Montpellier , UMR 5253 CNRS, ENSCM, 8 rue de l'Ecole Normale , Montpellier 34296 , France.,Laboratoire Chimie Organique Appliquée LCOA , Faculté des Sciences et Techniques , Fès 30000 , Morocco
| | - Fouad Ouazzani Chahdi
- Laboratoire Chimie Organique Appliquée LCOA , Faculté des Sciences et Techniques , Fès 30000 , Morocco
| | - Arie Van Der Lee
- Institut Européen des Membranes, ENSCM , Université de Montpellier , UMR 5635 CNRS, Montpellier 34095 , France
| | - Dominique Harakat
- Institut de Chimie Moléculaire de Reims , Université de Reims , UMR 7312 CNRS, BP 1039, Reims 51687 , France
| | - Eric Clot
- Institut Charles Gerhardt Montpellier , Université de Montpellier , UMR 5253 CNRS, ENSCM, 8 rue de l'Ecole Normale , Montpellier 34296 , France
| | - Florian Jaroschik
- Institut Charles Gerhardt Montpellier , Université de Montpellier , UMR 5253 CNRS, ENSCM, 8 rue de l'Ecole Normale , Montpellier 34296 , France
| | - Marc Taillefer
- Institut Charles Gerhardt Montpellier , Université de Montpellier , UMR 5253 CNRS, ENSCM, 8 rue de l'Ecole Normale , Montpellier 34296 , France
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72
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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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73
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Kim JH, Mertens RT, Agarwal A, Parkin S, Berger G, Awuah SG. Direct intramolecular carbon(sp 2)-nitrogen(sp 2) reductive elimination from gold(iii). Dalton Trans 2019; 48:6273-6282. [PMID: 30989158 DOI: 10.1039/c8dt05155k] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
The reactivity of bidentate AuIII-Cl species, [(C^N)AuCl2], with a bisphosphine or carbon donor ligands results in reductive elimination. Combined experimental and computational investigations lead to the first evidence of a direct intramolecular C(sp2)-N(sp2) bond formation from a monomeric [(C^N)AuCl2] gold(iii) complex. We show that bidentate ligated Au(iii) systems bypass transmetallation to form C(sp2)-N(sp2) species and NHC-Au-Cl. Mechanistic investigations of the reported transformation reveal a ligand-induced reductive elimination via a key AuIII intermediate. Kinetic studies of the reaction support a second-order rate process.
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Affiliation(s)
- Jong Hyun Kim
- Department of Chemistry, University of Kentucky, 505 Rose Street, Lexington, Kentucky 40506, USA.
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74
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Himmelstrup J, Buendia MB, Sun XW, Kramer S. Enantioselective aryl–aryl coupling facilitated by chiral binuclear gold complexes. Chem Commun (Camb) 2019; 55:12988-12991. [DOI: 10.1039/c9cc07175j] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
The first example of highly enantioselective aryl–aryl coupling mediated by chiral gold complexes is reported.
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Affiliation(s)
- Jonas Himmelstrup
- Department of Chemistry
- Technical University of Denmark
- 2800 Kgs. Lyngby
- Denmark
| | - Mikkel B. Buendia
- Department of Chemistry
- Technical University of Denmark
- 2800 Kgs. Lyngby
- Denmark
| | - Xing-Wen Sun
- Department of Chemistry
- Fudan University
- Shanghai 200433
- China
| | - Søren Kramer
- Department of Chemistry
- Technical University of Denmark
- 2800 Kgs. Lyngby
- Denmark
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75
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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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76
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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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77
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Yu JL, Zhang SQ, Hong X. Stepwise versus Concerted Reductive Elimination Mechanisms in the Carbon–Iodide Bond Formation of (DPEphos)RhMeI2 Complex. Organometallics 2018. [DOI: 10.1021/acs.organomet.8b00723] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Jing-Lu Yu
- Department of Chemistry, Zhejiang University, Hangzhou 310027, People’s Republic of China
| | - Shuo-Qing Zhang
- Department of Chemistry, Zhejiang University, Hangzhou 310027, People’s Republic of China
| | - Xin Hong
- Department of Chemistry, Zhejiang University, Hangzhou 310027, People’s Republic of China
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78
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Zhou Z, Hou ZL, Yang F, Yao B. Oxidative cross-coupling of allyl(trimethyl)silanes with aryl boronic acids by palladium catalysis. Tetrahedron 2018. [DOI: 10.1016/j.tet.2018.10.055] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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79
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Minami Y, Hiyama T. Designing Cross-Coupling Reactions using Aryl(trialkyl)silanes. Chemistry 2018; 25:391-399. [PMID: 30024650 DOI: 10.1002/chem.201803213] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2018] [Revised: 07/18/2018] [Indexed: 01/08/2023]
Abstract
Organo(trialkyl)silanes have several advantages, including high stability, low toxicity, good solubility, easy handling, and ready availability compared with heteroatom-substituted silanes. However, methods for the cross-coupling of organo(trialkyl)silanes are limited, most probably because of their exceeding robustness. Thus, a practical method for the cross-coupling of organo(trialkyl)silanes has been a long-standing challenging research target. This article discusses how aryl(trialkyl)silanes can be used in cross-coupling reactions. A pioneering example is CuII catalytic conditions with the use of electron-accepting aryl- or heteroaryl(triethyl)silanes and aryl iodides. The reaction forms biaryls or teraryls. This design concept can be extended to Pd/CuII -catalyzed cross-coupling polymerization reactions between such silanes and aryl bromides or chlorides and to CuI -catalyzed alkylation using alkyl halides.
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Affiliation(s)
- Yasunori Minami
- Research and Development Initiative, Chuo University, 1-13-27, Kasuga, Bunkyo-ku, Tokyo, 112-8551, Japan
| | - Tamejiro Hiyama
- Research and Development Initiative, Chuo University, 1-13-27, Kasuga, Bunkyo-ku, Tokyo, 112-8551, Japan
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80
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Mathiew M, Tan JK, Chan PWH. Gold‐Catalyzed Double Cycloisomerization of 1‐Ene‐4,10‐diynyl Esters to Bicyclo[6.3.0]undeca‐2,4,9‐trienyl Esters. Angew Chem Int Ed Engl 2018; 57:14235-14239. [DOI: 10.1002/anie.201809376] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2018] [Indexed: 01/28/2023]
Affiliation(s)
- Mitch Mathiew
- School of Chemistry Monash University Clayton Victoria 3800 Australia
| | | | - Philip Wai Hong Chan
- School of Chemistry Monash University Clayton Victoria 3800 Australia
- Department of Chemistry University of Warwick Coventry CV4 7AL UK
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81
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Mathiew M, Tan JK, Chan PWH. Gold‐Catalyzed Double Cycloisomerization of 1‐Ene‐4,10‐diynyl Esters to Bicyclo[6.3.0]undeca‐2,4,9‐trienyl Esters. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201809376] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Mitch Mathiew
- School of Chemistry Monash University Clayton Victoria 3800 Australia
| | | | - Philip Wai Hong Chan
- School of Chemistry Monash University Clayton Victoria 3800 Australia
- Department of Chemistry University of Warwick Coventry CV4 7AL UK
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82
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Keske EC, West TH, Lloyd-Jones GC. Analysis of Autoinduction, Inhibition, and Autoinhibition in a Rh-Catalyzed C–C Cleavage: Mechanism of Decyanative Aryl Silylation. ACS Catal 2018. [DOI: 10.1021/acscatal.8b02809] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Eric C. Keske
- EaStChem, School of Chemistry, University of Edinburgh, Joseph Black Building, David Brewster Road, Edinburgh EH9 3FJ, United Kingdom
| | - Thomas H. West
- EaStChem, School of Chemistry, University of Edinburgh, Joseph Black Building, David Brewster Road, Edinburgh EH9 3FJ, United Kingdom
| | - Guy C. Lloyd-Jones
- EaStChem, School of Chemistry, University of Edinburgh, Joseph Black Building, David Brewster Road, Edinburgh EH9 3FJ, United Kingdom
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83
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Robinson MP, Lloyd-Jones GC. Au-Catalyzed Oxidative Arylation: Chelation-Induced Turnover of ortho-Substituted Arylsilanes. ACS Catal 2018. [DOI: 10.1021/acscatal.8b02302] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Affiliation(s)
- Matthew P. Robinson
- EaStChem, University of Edinburgh, Joseph Black Building, David Brewster Road, Edinburgh, EH9 3FJ, 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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84
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Deng Q, Tan L, Xu Y, Liu P, Sun P. Synthesis of 6-Fluoroalkyl 6H-Benzo[c]chromenes via Visible-Light-Promoted Radical Addition/Cyclization of Biaryl Vinyl Ethers. J Org Chem 2018; 83:6151-6161. [DOI: 10.1021/acs.joc.8b01149] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Affiliation(s)
- Qinfei Deng
- School of Chemistry and Materials Science, Jiangsu Provincial Key Laboratory of Material Cycle Processes and Pollution Control, Jiangsu Collaborative Innovation Center of Biomedical Functional Materials, Nanjing Normal University, Nanjing 210023, China
| | - Liping Tan
- School of Chemistry and Materials Science, Jiangsu Provincial Key Laboratory of Material Cycle Processes and Pollution Control, Jiangsu Collaborative Innovation Center of Biomedical Functional Materials, Nanjing Normal University, Nanjing 210023, China
| | - Yan Xu
- School of Chemistry and Materials Science, Jiangsu Provincial Key Laboratory of Material Cycle Processes and Pollution Control, Jiangsu Collaborative Innovation Center of Biomedical Functional Materials, Nanjing Normal University, Nanjing 210023, China
| | - Ping Liu
- School of Chemistry and Materials Science, Jiangsu Provincial Key Laboratory of Material Cycle Processes and Pollution Control, Jiangsu Collaborative Innovation Center of Biomedical Functional Materials, Nanjing Normal University, Nanjing 210023, China
| | - Peipei Sun
- School of Chemistry and Materials Science, Jiangsu Provincial Key Laboratory of Material Cycle Processes and Pollution Control, Jiangsu Collaborative Innovation Center of Biomedical Functional Materials, Nanjing Normal University, Nanjing 210023, China
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85
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Shibata M, Ito H, Itami K. C–H Arylation of Phenanthrene with Trimethylphenylsilane by Pd/o-Chloranil Catalysis: Computational Studies on the Mechanism, Regioselectivity, and Role of o-Chloranil. J Am Chem Soc 2018; 140:2196-2205. [DOI: 10.1021/jacs.7b11260] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Mari Shibata
- Graduate School of Science, ‡JST-ERATO, Itami Molecular Nanocarbon Project and §Institute of Transformative
Bio-Molecules (WPI-ITbM), Nagoya University, Chikusa, Nagoya 464-8602, Japan
| | - Hideto Ito
- Graduate School of Science, ‡JST-ERATO, Itami Molecular Nanocarbon Project and §Institute of Transformative
Bio-Molecules (WPI-ITbM), Nagoya University, Chikusa, Nagoya 464-8602, Japan
| | - Kenichiro Itami
- Graduate School of Science, ‡JST-ERATO, Itami Molecular Nanocarbon Project and §Institute of Transformative
Bio-Molecules (WPI-ITbM), Nagoya University, Chikusa, Nagoya 464-8602, Japan
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86
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Komiyama T, Minami Y, Furuya Y, Hiyama T. Palladium/Copper Dual Catalysis for the Cross‐Coupling of Aryl(trialkyl)silanes with Aryl Bromides. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201712081] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Takeshi Komiyama
- Department of Applied Chemistry Chuo University 1-13-27, Kasuga Bunkyo-ku Tokyo 112-8551 Japan
| | - Yasunori Minami
- Research and Development Initiative Chuo University 1-13-27, Kasuga Bunkyo-ku Tokyo 112-8551 Japan
| | - Yuki Furuya
- Department of Applied Chemistry Chuo University 1-13-27, Kasuga Bunkyo-ku Tokyo 112-8551 Japan
| | - Tamejiro Hiyama
- Research and Development Initiative Chuo University 1-13-27, Kasuga Bunkyo-ku Tokyo 112-8551 Japan
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87
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Komiyama T, Minami Y, Furuya Y, Hiyama T. Palladium/Copper Dual Catalysis for the Cross‐Coupling of Aryl(trialkyl)silanes with Aryl Bromides. Angew Chem Int Ed Engl 2018; 57:1987-1990. [DOI: 10.1002/anie.201712081] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2017] [Indexed: 01/14/2023]
Affiliation(s)
- Takeshi Komiyama
- Department of Applied Chemistry Chuo University 1-13-27, Kasuga Bunkyo-ku Tokyo 112-8551 Japan
| | - Yasunori Minami
- Research and Development Initiative Chuo University 1-13-27, Kasuga Bunkyo-ku Tokyo 112-8551 Japan
| | - Yuki Furuya
- Department of Applied Chemistry Chuo University 1-13-27, Kasuga Bunkyo-ku Tokyo 112-8551 Japan
| | - Tamejiro Hiyama
- Research and Development Initiative Chuo University 1-13-27, Kasuga Bunkyo-ku Tokyo 112-8551 Japan
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88
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te Grotenhuis C, van den Heuvel N, van der Vlugt JI, de Bruin B. Catalytic Dibenzocyclooctene Synthesis via Cobalt(III)-Carbene Radical and ortho-Quinodimethane Intermediates. Angew Chem Int Ed Engl 2018; 57:140-145. [PMID: 29155465 PMCID: PMC5767734 DOI: 10.1002/anie.201711028] [Citation(s) in RCA: 70] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2017] [Indexed: 12/02/2022]
Abstract
The metalloradical activation of ortho-benzallylaryl N-tosyl hydrazones with [Co(TPP)] (TPP=tetraphenylporphyrin) as the catalyst enabled the controlled exploitation of the single-electron reactivity of the redox non-innocent carbene intermediate. This method offers a novel route to prepare eight-membered rings, using base metal catalysis to construct a series of unique dibenzocyclooctenes through selective Ccarbene -Caryl cyclization. The desired eight-membered-ring products were obtained in good to excellent yields. A large variety of aromatic substituents are tolerated. The proposed reaction mechanism involves intramolecular hydrogen atom transfer (HAT) to CoIII -carbene radical intermediates followed by dissociation of an ortho-quinodimethane that undergoes 8π cyclization. The mechanism is supported by DFT calculations, and the presence of radical-type intermediates was confirmed by trapping experiments.
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Affiliation(s)
- Colet te Grotenhuis
- Homogeneous, Supramolecular and Bio-Inspired Catalysis (HomKat) group Van't Hoff Institute for Molecular Sciences (HIMS)University of AmsterdamScience Park 9041098XHAmsterdamThe Netherlands
| | - Naudin van den Heuvel
- Homogeneous, Supramolecular and Bio-Inspired Catalysis (HomKat) group Van't Hoff Institute for Molecular Sciences (HIMS)University of AmsterdamScience Park 9041098XHAmsterdamThe Netherlands
| | - Jarl Ivar van der Vlugt
- Homogeneous, Supramolecular and Bio-Inspired Catalysis (HomKat) group Van't Hoff Institute for Molecular Sciences (HIMS)University of AmsterdamScience Park 9041098XHAmsterdamThe Netherlands
| | - Bas de Bruin
- Homogeneous, Supramolecular and Bio-Inspired Catalysis (HomKat) group Van't Hoff Institute for Molecular Sciences (HIMS)University of AmsterdamScience Park 9041098XHAmsterdamThe Netherlands
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89
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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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90
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91
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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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92
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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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93
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Balgobin SMC, Brookes DJ, Jiang J, Pritchard RG, Wallace TW. Axial stereocontrol in tropos dibenz[c,e]azepines: the individual and cooperative effects of alkyl substituents. Org Biomol Chem 2017; 15:10184-10199. [PMID: 29177299 DOI: 10.1039/c7ob02385e] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
6,7-Dihydro-5H-dibenz[c,e]azepines, a class of secondary amine incorporating a centre-axis chirality relay, can be prepared from N-(2-bromobenzyl)-N-(1-arylalkyl)methanesulfonamides via Pd-catalysed intramolecular direct arylation, and methylated at C(7) via the 5,7-trans diastereoselective addition of methylmagnesium bromide to the derived N-benzylazepinium tetraphenylborate. Using these methods, the 4,5-dimethylated and 4,5,7-trimethylated homologues 13 and 14 were obtained and shown by 1H NMR spectroscopy to be axially biased in opposite senses, as defined by the respective pseudoaxial or pseudoequatorial orientation of the 5-substituent in the preferred conformers, while retaining their tropos nature (the Arrhenius activation energy, EA, for the conformational exchange process in 14 was estimated to be 57 kJ mol-1 using 2D-EXSY NMR spectroscopy at 233-248 K). These results serve to illustrate how substituent effects might be exploited in new designs of bridged biaryl ligand in which tropos dynamics operate in combination with a pre-existing axial stereochemical bias.
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Affiliation(s)
- Sinead M C Balgobin
- School of Chemistry, The University of Manchester, Oxford Road, Manchester M13 9PL, UK.
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94
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Chen C, Chen X, Zhang X, Wang S, Rao W, Chan PWH. Gold‐Catalyzed Dehydrogenative Cycloisomerization of 1,4‐Enyne Esters to 3,5‐Disubstituted Phenol Derivatives. Adv Synth Catal 2017. [DOI: 10.1002/adsc.201701068] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Affiliation(s)
- Cuili Chen
- Jiangsu Key Laboratory of Biomass-based Green Fuels and Chemicals, College of Chemical Engineering Nanjing Forestry University Nanjing 210037 People's Republic of China
| | - Xianxiao Chen
- Jiangsu Key Laboratory of Biomass-based Green Fuels and Chemicals, College of Chemical Engineering Nanjing Forestry University Nanjing 210037 People's Republic of China
| | - Xiaoxiang Zhang
- Jiangsu Key Laboratory of Biomass-based Green Fuels and Chemicals, College of Chemical Engineering Nanjing Forestry University Nanjing 210037 People's Republic of China
| | - Shifa Wang
- Jiangsu Key Laboratory of Biomass-based Green Fuels and Chemicals, College of Chemical Engineering Nanjing Forestry University Nanjing 210037 People's Republic of China
| | - Weidong Rao
- Jiangsu Key Laboratory of Biomass-based Green Fuels and Chemicals, College of Chemical Engineering Nanjing Forestry University Nanjing 210037 People's Republic of China
| | - Philip Wai Hong Chan
- School of Chemistry Monash University Clayton, Victoria 3800 Australia
- Department of Chemistry University of Warwick Coventry CV4 7AL U.K
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95
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Yuan C, Wu Y, Wang D, Zhang Z, Wang C, Zhou L, Zhang C, Song B, Guo H. Formal [5+3] Cycloaddition of Zwitterionic Allylpalladium Intermediates with Azomethine Imines for Construction of N,O-Containing Eight-Membered Heterocycles. Adv Synth Catal 2017. [DOI: 10.1002/adsc.201701247] [Citation(s) in RCA: 84] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Chunhao Yuan
- Department of Applied Chemistry; China Agricultural University; 2 West Yuanmingyuan Road Beijing 100193 People's Republic of China
| | - Yang Wu
- Department of Applied Chemistry; China Agricultural University; 2 West Yuanmingyuan Road Beijing 100193 People's Republic of China
| | - Dongqi Wang
- Institute of High Energy Physics; Chinese Academy of Science; Beijing 100049 People's Republic of China
| | - Zhenhua Zhang
- Department of Applied Chemistry; China Agricultural University; 2 West Yuanmingyuan Road Beijing 100193 People's Republic of China
| | - Chang Wang
- Department of Applied Chemistry; China Agricultural University; 2 West Yuanmingyuan Road Beijing 100193 People's Republic of China
| | - Leijie Zhou
- Department of Applied Chemistry; China Agricultural University; 2 West Yuanmingyuan Road Beijing 100193 People's Republic of China
| | - Cheng Zhang
- Department of Applied Chemistry; China Agricultural University; 2 West Yuanmingyuan Road Beijing 100193 People's Republic of China
| | - Baoan Song
- Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education; Guizhou University; Guiyang 550025 People's Republic of China
| | - Hongchao Guo
- Department of Applied Chemistry; China Agricultural University; 2 West Yuanmingyuan Road Beijing 100193 People's Republic of China
- Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education; Guizhou University; Guiyang 550025 People's Republic of China
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96
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te Grotenhuis C, van den Heuvel N, van der Vlugt JI, de Bruin B. Catalytic Dibenzocyclooctene Synthesis via Cobalt(III)-Carbene Radical and ortho
-Quinodimethane Intermediates. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201711028] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Colet te Grotenhuis
- Homogeneous, Supramolecular and Bio-Inspired Catalysis (HomKat) group Van't Hoff Institute for Molecular Sciences (HIMS); University of Amsterdam; Science Park 904 1098 XH Amsterdam The Netherlands
| | - Naudin van den Heuvel
- Homogeneous, Supramolecular and Bio-Inspired Catalysis (HomKat) group Van't Hoff Institute for Molecular Sciences (HIMS); University of Amsterdam; Science Park 904 1098 XH Amsterdam The Netherlands
| | - Jarl Ivar van der Vlugt
- Homogeneous, Supramolecular and Bio-Inspired Catalysis (HomKat) group Van't Hoff Institute for Molecular Sciences (HIMS); University of Amsterdam; Science Park 904 1098 XH Amsterdam The Netherlands
| | - Bas de Bruin
- Homogeneous, Supramolecular and Bio-Inspired Catalysis (HomKat) group Van't Hoff Institute for Molecular Sciences (HIMS); University of Amsterdam; Science Park 904 1098 XH Amsterdam The Netherlands
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97
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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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98
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Rocchigiani L, Fernandez‐Cestau J, Agonigi G, Chambrier I, Budzelaar PHM, Bochmann M. Gold(III) Alkyne Complexes: Bonding and Reaction Pathways. Angew Chem Int Ed Engl 2017; 56:13861-13865. [PMID: 28892244 PMCID: PMC5698712 DOI: 10.1002/anie.201708640] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2017] [Indexed: 11/26/2022]
Abstract
The synthesis and characterization of hitherto hypothetical AuIII π-alkyne complexes is reported. Bonding and stability depend strongly on the trans effect and steric factors. Bonding characteristics shed light on the reasons for the very different stabilities between the classical alkyne complexes of PtII and their drastically more reactive AuIII congeners. Lack of back-bonding facilitates alkyne slippage, which is energetically less costly for gold than for platinum and explains the propensity of gold to facilitate C-C bond formation. Cycloaddition followed by aryl migration and reductive deprotonation is presented as a new reaction sequence in gold chemistry.
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Affiliation(s)
- Luca Rocchigiani
- School of ChemistryUniversity of East AngliaNorwich Research ParkNorwichNR4 7TJUK
| | | | - Gabriele Agonigi
- School of ChemistryUniversity of East AngliaNorwich Research ParkNorwichNR4 7TJUK
| | - Isabelle Chambrier
- School of ChemistryUniversity of East AngliaNorwich Research ParkNorwichNR4 7TJUK
| | | | - Manfred Bochmann
- School of ChemistryUniversity of East AngliaNorwich Research ParkNorwichNR4 7TJUK
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99
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Rauf W, Brown JM. Mechanisms for C(sp 2)-Si activation of aryltrimethylsilyl groups in palladium-catalysed couplings. Org Biomol Chem 2017; 15:8179-8185. [PMID: 28926074 DOI: 10.1039/c7ob01675a] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Silyl-substituted aromatic compounds can participate as the electrophilic component in palladium-catalysed cross-couplings, and reactivity is enhanced by a neighbouring silyl-group. Products analogous to those obtained from C-H activation chemistry are accessible by this means with the additional benefit of regiochemistry defined by the site of silyl substitution. DFT studies described here show that the mechanism of C-Si cleavage is distinct from previously recognised mechanisms for C-H cleavage, with a cascade of silyl intermediates en route to a stable product. The amide directing-groups are involved only in the stabilisation of palladacyclic intermediates, and are never disposed to activate silicon directly. 5-Membered and 6-membered palladacycles are known to behave differently in coupling reactions and the calculations reveal underlying reasons in the cationic pathways studied here.
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Affiliation(s)
- Waqar Rauf
- Health Biotechnology Division, NIBGE, Faisalabad, Pakistan.
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100
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Rocchigiani L, Fernandez-Cestau J, Agonigi G, Chambrier I, Budzelaar PHM, Bochmann M. Gold(III) Alkyne Complexes: Bonding and Reaction Pathways. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201708640] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Affiliation(s)
- Luca Rocchigiani
- School of Chemistry; University of East Anglia; Norwich Research Park Norwich NR4 7TJ UK
| | - Julio Fernandez-Cestau
- School of Chemistry; University of East Anglia; Norwich Research Park Norwich NR4 7TJ UK
| | - Gabriele Agonigi
- School of Chemistry; University of East Anglia; Norwich Research Park Norwich NR4 7TJ UK
| | - Isabelle Chambrier
- School of Chemistry; University of East Anglia; Norwich Research Park Norwich NR4 7TJ UK
| | - Peter H. M. Budzelaar
- Department of Chemistry; University of Naples Federico II; Via Cintia 80126 Naples Italy
| | - Manfred Bochmann
- School of Chemistry; University of East Anglia; Norwich Research Park Norwich NR4 7TJ UK
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