1
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Xu M, Sun B, Poole DA, Bobylev EO, Jing X, Wu J, He C, Duan C, Reek JNH. Broadening the catalytic region from the cavity to windows by M 6L 12 nanospheres in cyclizations. Chem Sci 2023; 14:11699-11707. [PMID: 37920339 PMCID: PMC10619639 DOI: 10.1039/d3sc02998k] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2023] [Accepted: 09/24/2023] [Indexed: 11/04/2023] Open
Abstract
Supramolecular cages have received tremendous attention as they can contain catalysts that exhibit confinement effects in the cavity, leading to excellent performances. Herein, we report an example wherein the catalytic region is extended from the cage cavity to the windows, and investigate its confinement effect by utilizing the Pd6LAu12 cage that contains rigidly fixed and isolated gold complexes at the windows. Pd6LAu12 exhibit three features of particular interest while assessing their properties in gold-catalyzed cyclization reactions. First, the catalysts experience a cage effect as they display higher reactivity and selectivity compared to the monomeric analogue, as a result of substrate pre-organization at the windows. Second, the metal complexes are physically separated by the cage structure, preventing the formation of less active dinuclear gold complexes making it more stable under hydrous conditions. Third, the cage windows present the characteristics of enzymatic catalysis via Michaelis-Menten-type mechanism analysis. This contribution presents an alternative way to engineer supramolecular catalysts through extending the catalytic region.
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Affiliation(s)
- Meiling Xu
- State Key Laboratory of Fine Chemicals, Dalian University of Technology Dalian 116024 P. R. China
| | - Bin Sun
- Homogeneous, Supramolecular and Bio-Inspired Catalysis, Van't Hoff Institute for Molecular Sciences, University of Amsterdam Science Park 904 Amsterdam 1098 XH The Netherlands
| | - David A Poole
- Homogeneous, Supramolecular and Bio-Inspired Catalysis, Van't Hoff Institute for Molecular Sciences, University of Amsterdam Science Park 904 Amsterdam 1098 XH The Netherlands
| | - Eduard O Bobylev
- Homogeneous, Supramolecular and Bio-Inspired Catalysis, Van't Hoff Institute for Molecular Sciences, University of Amsterdam Science Park 904 Amsterdam 1098 XH The Netherlands
| | - Xu Jing
- State Key Laboratory of Fine Chemicals, Dalian University of Technology Dalian 116024 P. R. China
| | - Jinguo Wu
- State Key Laboratory of Fine Chemicals, Dalian University of Technology Dalian 116024 P. R. China
| | - Cheng He
- State Key Laboratory of Fine Chemicals, Dalian University of Technology Dalian 116024 P. R. China
| | - Chunying Duan
- State Key Laboratory of Fine Chemicals, Dalian University of Technology Dalian 116024 P. R. China
| | - Joost N H Reek
- Homogeneous, Supramolecular and Bio-Inspired Catalysis, Van't Hoff Institute for Molecular Sciences, University of Amsterdam Science Park 904 Amsterdam 1098 XH The Netherlands
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2
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Gao P, Szostak M. Hydration Reactions Catalyzed by Transition Metal-NHC (NHC = N-Heterocyclic Carbene) Complexes. Coord Chem Rev 2023; 485:215110. [PMID: 37064328 PMCID: PMC10104449 DOI: 10.1016/j.ccr.2023.215110] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/18/2023]
Abstract
The catalytic addition of water to unsaturated C-C or C-N π bonds represent one of the most important and environmentally sustainable methods to form C-O bonds for the production of synthetic intermediates, medicinal agents and natural products. The traditional acid-catalyzed hydration of unsaturated compounds typically requires strong acids or toxic mercury salts, which limits practical applications and presents safety and environmental concerns. Today, transition-metal-catalyzed hydration supported by NHC (NHC = N-heterocyclic carbene) ligands has attracted major attention. By rational design of ligands, choice of metals and counterions as well as mechanistic studies and the development of heterogeneous systems, major progress has been achieved for a broad range of hydration processes. In particular, the combination of NHC ligands with gold shows excellent reactivity compared with other catalytic systems; however, other systems based on silver, ruthenium, osmium, platinum, rhodium and nickel have also been discovered. Ancillary NHC ligands provide stabilization of transition metals and ensure high catalytic activity in hydration owing to their unique electronic and steric properties. NHC-Au(I) complexes are particularly favored for hydration of unsaturated hydrocarbons due to soft and carbophilic properties of gold. In this review, we present a comprehensive overview of hydration reactions catalyzed by transition metal-NHC complexes and their applications in catalytic hydration of different classes of π-substrates with a focus on the role of NHC ligands, types of metals and counterions.
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Affiliation(s)
- Pengcheng Gao
- Department of Chemistry, Rutgers University, 73 Warren Street, Newark, New Jersey 07102, United States
| | - Michal Szostak
- Department of Chemistry, Rutgers University, 73 Warren Street, Newark, New Jersey 07102, United States
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3
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Nugegoda D, Tzouras NV, Nolan SP, Delcamp JH. N-Heterocyclic Carbene Gold Complexes in a Photocatalytic CO 2 Reduction Reaction. Inorg Chem 2022; 61:18802-18809. [DOI: 10.1021/acs.inorgchem.2c03487] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Dinesh Nugegoda
- Department of Chemistry and Biochemistry, University of Mississippi, 322 Coulter Hall, University Park 38677, Mississippi, United States
| | - Nikolaos V. Tzouras
- Department of Chemistry and Centre for Sustainable Chemistry, Ghent University, Krijgslaan 281, Ghent 9000 S-3, Belgium
| | - Steven P. Nolan
- Department of Chemistry and Centre for Sustainable Chemistry, Ghent University, Krijgslaan 281, Ghent 9000 S-3, Belgium
| | - Jared H. Delcamp
- Department of Chemistry and Biochemistry, University of Mississippi, 322 Coulter Hall, University Park 38677, Mississippi, United States
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4
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Ibni Hashim I, Tzouras NV, Janssens W, Scattolin T, Bourda L, Bhandary S, Van Hecke K, Nolan SP, Cazin CSJ. Synthesis of Carbene‐Metal‐Amido (CMA) Complexes and Their Use as Precatalysts for the Activator‐Free, Gold‐Catalyzed Addition of Carboxylic Acids to Alkynes. Chemistry 2022; 28:e202201224. [DOI: 10.1002/chem.202201224] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2022] [Indexed: 11/08/2022]
Affiliation(s)
- Ishfaq Ibni Hashim
- Department of Chemistry and Centre for Sustainable Chemistry Ghent University Krijgslaan 281,S-3 9000 Ghent Belgium
| | - Nikolaos V. Tzouras
- Department of Chemistry and Centre for Sustainable Chemistry Ghent University Krijgslaan 281,S-3 9000 Ghent Belgium
| | - Wim Janssens
- Department of Chemistry and Centre for Sustainable Chemistry Ghent University Krijgslaan 281,S-3 9000 Ghent Belgium
| | - Thomas Scattolin
- Dipartimento di Scienze Chimiche Università degli Studi di Padova Via Marzolo 1 35131 Padova Italy
| | - Laurens Bourda
- Department of Chemistry and Centre for Sustainable Chemistry Ghent University Krijgslaan 281,S-3 9000 Ghent Belgium
| | - Subhrajyoti Bhandary
- Department of Chemistry and Centre for Sustainable Chemistry Ghent University Krijgslaan 281,S-3 9000 Ghent Belgium
| | - Kristof Van Hecke
- Department of Chemistry and Centre for Sustainable Chemistry Ghent University Krijgslaan 281,S-3 9000 Ghent Belgium
| | - Steven P. Nolan
- Department of Chemistry and Centre for Sustainable Chemistry Ghent University Krijgslaan 281,S-3 9000 Ghent Belgium
| | - Catherine S. J. Cazin
- Department of Chemistry and Centre for Sustainable Chemistry Ghent University Krijgslaan 281,S-3 9000 Ghent Belgium
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5
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Rachor SG, Müller R, Wittwer P, Kaupp M, Braun T. Synthesis, Reactivity, and Bonding of Gold(I) Fluorido-Phosphine Complexes. Inorg Chem 2021; 61:357-367. [PMID: 34913690 DOI: 10.1021/acs.inorgchem.1c02959] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
Gold(I) fluorido complexes with phosphine ligands have been synthesized from their respective iodido precursors. The bonding situation in comparison between complexes bearing phosphines and N-heterocyclic carbenes (NHCs) was explored quantum-chemically, obtaining similar results for both. Calculations of the 19F NMR chemical shifts match the experimental values well, including the approximately 40 ppm low-field shifts for the phosphine complexes compared to the NHC complexes, in spite of similar negative charges on fluorine. The reactivity of the highly water-sensitive gold(I) fluorido complexes was studied, resulting in substitution at the metal using trimethylsilyl reagents. The compounds studied were characterized using NMR as well as X-ray diffraction methods.
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Affiliation(s)
- Simon G Rachor
- Department of Chemistry, Humboldt-Universität zu Berlin, Brook-Taylor-Straße 2, 12489 Berlin, Germany
| | - Robert Müller
- Institut für Chemie, Theoretische Chemie/Quantenchemie, Technische Universität Berlin, Sekr. C7, Strasse des 17 Juni 135, 10623 Berlin, Germany
| | - Philipp Wittwer
- Department of Chemistry, Humboldt-Universität zu Berlin, Brook-Taylor-Straße 2, 12489 Berlin, Germany
| | - Martin Kaupp
- Institut für Chemie, Theoretische Chemie/Quantenchemie, Technische Universität Berlin, Sekr. C7, Strasse des 17 Juni 135, 10623 Berlin, Germany
| | - Thomas Braun
- Department of Chemistry, Humboldt-Universität zu Berlin, Brook-Taylor-Straße 2, 12489 Berlin, Germany
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6
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Sato CM, Walde RK, Bacsa J, Jordan AJ, Sadighi JP. Ligand-based control of nuclearity in (NHC)gold(I) sulfides. Dalton Trans 2021; 50:15721-15729. [PMID: 34697620 DOI: 10.1039/d1dt02616j] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
N-Heterocyclic carbene (NHC) ligands support gold(I) sulfide complexes of varying nuclearity and charge. For sterically undemanding ligands, gold(I) chlorides react with sulfide to form trigold μ3-sulfido cations as the first observed products. The ligand IMes [1,3-bis(2,4,6-trimethylphenyl)imidazol-2-ylidene] supports a monomeric cation, whereas the ICy-(1,3-dicyclohexylimidazol-2-ylidene-) supported cation crystallises as a dimer linked through an aurophilic interaction. The more sterically demanding IDipp [1,3-bis(2,6-diisopropylphenyl)imidazol-2-ylidene] supports a terminal hydrosulfide, a (μ-hydrosulfido)digold cation, and a μ3-sulfido cation. Use of the expanded-ring NHC 7Dipp [1,3-bis(2,6-diisopropylphenyl)-4,5,6,7-tetrahydro-1,3-diazepin-2-ylidene] allows the isolation of a neutral digold sulfide.
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Affiliation(s)
- Christopher M Sato
- School of Chemistry & Biochemistry, Georgia Institute of Technology, 901 Atlantic Drive NW, Atlanta, GA, USA, 30332.
| | - Rebecca K Walde
- School of Chemistry & Biochemistry, Georgia Institute of Technology, 901 Atlantic Drive NW, Atlanta, GA, USA, 30332.
| | - John Bacsa
- School of Chemistry & Biochemistry, Georgia Institute of Technology, 901 Atlantic Drive NW, Atlanta, GA, USA, 30332. .,X-ray Crystallography Center, Department of Chemistry, Emory University, 1515 Dickey Drive, Atlanta, GA, USA, 30322
| | - Abraham J Jordan
- School of Chemistry & Biochemistry, Georgia Institute of Technology, 901 Atlantic Drive NW, Atlanta, GA, USA, 30332.
| | - Joseph P Sadighi
- School of Chemistry & Biochemistry, Georgia Institute of Technology, 901 Atlantic Drive NW, Atlanta, GA, USA, 30332.
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7
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Gauthier R, Tzouras NV, Zhang Z, Bédard S, Saab M, Falivene L, Van Hecke K, Cavallo L, Nolan SP, Paquin JF. Gold N-Heterocyclic Carbene Catalysts for the Hydrofluorination of Alkynes Using Hydrofluoric Acid: Reaction Scope, Mechanistic Studies and the Tracking of Elusive Intermediates. Chemistry 2021; 28:e202103886. [PMID: 34739142 DOI: 10.1002/chem.202103886] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2021] [Indexed: 11/07/2022]
Abstract
An efficient and chemoselective methodology deploying gold-N-heterocyclic carbene (NHC) complexes as catalysts in the hydrofluorination of terminal alkynes using aqueous HF has been developed. Mechanistic studies shed light on an in situ generated catalyst, formed by the reaction of Brønsted basic gold pre-catalysts with HF in water, which exhibits the highest reactivity and chemoselectivity. The catalytic system has a wide alkyl substituted-substrate scope, and stoichiometric as well as catalytic reactions with tailor-designed gold pre-catalysts enable the identification of various gold species involved along the catalytic cycle. Computational studies aid in understanding the chemoselectivity observed through examination of key mechanistic steps for phosphine- and NHC-coordinated gold species bearing the triflate counterion and the elusive key complex bearing a bifluoride counterion.
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Affiliation(s)
- Raphaël Gauthier
- PROTEO, CCVC, Département de chimie, Université Laval, 1045 avenue de la Médecine, Québec, QC, G1V 0A6, Canada
| | - Nikolaos V Tzouras
- Department of Chemistry and Centre for Sustainable Chemistry, Ghent University, Krijgslaan 281, S-3, 9000, Ghent, Belgium
| | - Ziyun Zhang
- KAUST Catalysis Center, Physical Sciences and Engineering Division, King Abdullah University of Science and Technology, Thuwal, 23955-6900, Saudi Arabia
| | - Sandrine Bédard
- PROTEO, CCVC, Département de chimie, Université Laval, 1045 avenue de la Médecine, Québec, QC, G1V 0A6, Canada
| | - Marina Saab
- Department of Chemistry and Centre for Sustainable Chemistry, Ghent University, Krijgslaan 281, S-3, 9000, Ghent, Belgium
| | - Laura Falivene
- KAUST Catalysis Center, Physical Sciences and Engineering Division, King Abdullah University of Science and Technology, Thuwal, 23955-6900, Saudi Arabia
| | - Kristof Van Hecke
- Department of Chemistry and Centre for Sustainable Chemistry, Ghent University, Krijgslaan 281, S-3, 9000, Ghent, Belgium
| | - Luigi Cavallo
- KAUST Catalysis Center, Physical Sciences and Engineering Division, King Abdullah University of Science and Technology, Thuwal, 23955-6900, Saudi Arabia
| | - Steven P Nolan
- Department of Chemistry and Centre for Sustainable Chemistry, Ghent University, Krijgslaan 281, S-3, 9000, Ghent, Belgium
| | - Jean-François Paquin
- PROTEO, CCVC, Département de chimie, Université Laval, 1045 avenue de la Médecine, Québec, QC, G1V 0A6, Canada
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8
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Zhou J, Litle ED, Gabbaï FP. Isolation and reactivity of a gold(I) hydroxytrifluoroborate complex stabilized by anion-π + interactions. Chem Commun (Camb) 2021; 57:10154-10157. [PMID: 34486616 DOI: 10.1039/d1cc04105c] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A 9,9-dimethylxanthene-based ligand substituted at the 4- and 5-positions by a phosphine and a xanthylium unit, respectively, has been prepared and converted into an AuCl complex, the structure of which reveals an intramolecular Au-Cl⋯π+ interaction. This new ligand platform was also found to support the formation of an unprecedented hydroxytrifluoroborate derivative featuring a "hard/soft" mismatched Au-μ(OH)-BF3 motif. Despite its surprising stability, this gold hydroxytrifluoroborate complex is a remarkably potent carbophilic catalyst which readily activates alkynes, without activator.
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Affiliation(s)
- Jiliang Zhou
- Department of Chemistry, Texas A&M University, College Station, TX 77843, USA.
| | - Elishua D Litle
- Department of Chemistry, Texas A&M University, College Station, TX 77843, USA.
| | - François P Gabbaï
- Department of Chemistry, Texas A&M University, College Station, TX 77843, USA.
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9
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Escayola S, Poater J, Ramos M, Luque‐Urrutia JA, Duran J, Simon S, Solà M, Cavallo L, Nolan SP, Poater A. Chelation enforcing a dual gold configuration in the catalytic hydroxyphenoxylation of alkynes. Appl Organomet Chem 2021. [DOI: 10.1002/aoc.6362] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Sílvia Escayola
- Institut de Química Computacional i Catàlisi, Departament de Química Universitat de Girona Girona Spain
| | - Jordi Poater
- Departament de Química Inorgànica i Orgànica and IQTCUB Universitat de Barcelona Barcelona Spain
- ICREA Barcelona Spain
| | - Miguel Ramos
- Institut de Química Computacional i Catàlisi, Departament de Química Universitat de Girona Girona Spain
| | | | - Josep Duran
- Institut de Química Computacional i Catàlisi, Departament de Química Universitat de Girona Girona Spain
| | - Sílvia Simon
- Institut de Química Computacional i Catàlisi, Departament de Química Universitat de Girona Girona Spain
| | - Miquel Solà
- Institut de Química Computacional i Catàlisi, Departament de Química Universitat de Girona Girona Spain
| | - Luigi Cavallo
- KAUST Catalysis Center (KCC) King Abdullah University of Science and Technology Thuwal Saudi Arabia
| | - Steven P. Nolan
- Department of Chemistry and Center for Sustainable Chemistry Ghent University Ghent Belgium
| | - Albert Poater
- Institut de Química Computacional i Catàlisi, Departament de Química Universitat de Girona Girona Spain
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10
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Schulz J, Císařová I, Gyepes R, Štěpnička P. Synthesis and Reactivity of Multinuclear Gold Complexes with (Diphenylphosphanyl)ferrocene and Oxygen Ligands. Angew Chem Int Ed Engl 2021; 60:6992-6996. [PMID: 33336839 DOI: 10.1002/anie.202014359] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2020] [Revised: 11/20/2020] [Indexed: 11/10/2022]
Abstract
AuI complexes combining hard oxygen and soft (diphenylphosphanyl)ferrocene (L) ligands in their molecules were synthesized, viz. the gold hydroxides [Au(OH)(L-κP)] (5) and [{Au(L-κP)}2 (μ-OH)][BF4 ] (4), and the oxonium cluster [{Au(L-κP)}3 (μ3 -O)][BF4 ] (1). In-situ auration of 1 produced [{Au(L-κP)}4 (μ4 -O)][BF4 ]2 (2), which spontaneously converted into a dimeric tetragold complex featuring bridging phosphanylferrocenyl groups geminally diaurated in position 2 of the ferrocene scaffold. The same complex and its isomer incorporating ferrocene-1,1'-diyl bridges resulted similarly from 4. Upon crystallization, compound 5 underwent a redox reaction, producing a structurally unique, crown-like, mixed-valent Au0 /AuI cluster, [Au7 (L-κP)6 ]OH. Compounds 1 and 5 were used to prepare the analogous, N-bridged complexes, [{Au(L-κP)}3 (μ3 -NFc)][BF4 ] (Fc=ferrocenyl) and [{Au(L-κP)}4 (μ4 -N)][BF4 ]. The compounds were structurally characterized and further studied by DFT calculations.
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Affiliation(s)
- Jiří Schulz
- Department of Inorganic Chemistry, Faculty of Science, Charles University, Hlavova 2030, 128 40, Prague, Czech Republic
| | - Ivana Císařová
- Department of Inorganic Chemistry, Faculty of Science, Charles University, Hlavova 2030, 128 40, Prague, Czech Republic
| | - Róbert Gyepes
- Department of Inorganic Chemistry, Faculty of Science, Charles University, Hlavova 2030, 128 40, Prague, Czech Republic
| | - Petr Štěpnička
- Department of Inorganic Chemistry, Faculty of Science, Charles University, Hlavova 2030, 128 40, Prague, Czech Republic
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11
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Schulz J, Císařová I, Gyepes R, Štěpnička P. Synthesis and Reactivity of Multinuclear Gold Complexes with (Diphenylphosphanyl)ferrocene and Oxygen Ligands. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202014359] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Jiří Schulz
- Department of Inorganic Chemistry Faculty of Science Charles University Hlavova 2030 128 40 Prague Czech Republic
| | - Ivana Císařová
- Department of Inorganic Chemistry Faculty of Science Charles University Hlavova 2030 128 40 Prague Czech Republic
| | - Róbert Gyepes
- Department of Inorganic Chemistry Faculty of Science Charles University Hlavova 2030 128 40 Prague Czech Republic
| | - Petr Štěpnička
- Department of Inorganic Chemistry Faculty of Science Charles University Hlavova 2030 128 40 Prague Czech Republic
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12
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Franchino A, Montesinos-Magraner M, Echavarren AM. Silver-Free Catalysis with Gold(I) Chloride Complexes. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 2021. [DOI: 10.1246/bcsj.20200358] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Allegra Franchino
- Institute of Chemical Research of Catalonia (ICIQ), Barcelona Institute of Science and Technology, Av. Països Catalans 16, 43007 Tarragona, Spain
| | - Marc Montesinos-Magraner
- Institute of Chemical Research of Catalonia (ICIQ), Barcelona Institute of Science and Technology, Av. Països Catalans 16, 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 Química Analítica i Química Orgànica, Universitat Rovira i Virgili, C/Marcel·lí Domingo s/n, 43007 Tarragona, Spain
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13
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Synthesis of N-heterocyclic carbene gold(I) complexes. Nat Protoc 2021; 16:1476-1493. [PMID: 33504989 DOI: 10.1038/s41596-020-00461-6] [Citation(s) in RCA: 40] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2019] [Accepted: 11/09/2020] [Indexed: 01/30/2023]
Abstract
N-heterocyclic carbene gold(I) chloride and hydroxide complexes are regularly used as synthons to access various oxygen-, nitrogen- or carbon-bound gold complexes. They are also widely employed as efficient catalysts in addition reactions of hydroelements to unsaturated bonds and in several rearrangement and decarboxylation protocols. Here we describe the multigram synthesis of the most common mononuclear N-heterocyclic carbene gold(I) chloride complexes bearing the N,N'-bis-(2,4,6-trimethylphenyl)imidazol-2-ylidene (IMes), N,N'-bis(2,6-diisopropylphenyl)imidazol-2-ylidene (IPr) and N,N'-bis(2,6-bis(diphenylmethyl)-4-methylphenyl)imidazol-2-ylidene (IPr*) ligands. Their synthesis is achieved through the straightforward and practical weak base approach in a total time of 4-5 h. This straightforward methodology is conducted under air and possesses considerable advantages over alternative routes, such as the use of a sustainable reaction solvent, minimal amounts of a mild base and commercially available or easily obtained starting materials. Additionally, we describe the synthesis of the mononuclear gold(I) hydroxide complex bearing the IPr ligand, using the state-of-the-art method requiring 24 h. Finally, the improved synthesis of the dinuclear gold(I) hydroxide complex [{Au(IPr)}2(μ-OH)][BF4] is described (~3 h). All procedures can be performed by researchers with standard training and lead to high yields (76-99%) of microanalytically pure bench-stable materials.
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14
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Le Q, Dillon CC, Lichtenstein DA, Pisor JW, Closser KD, Muchalski H. Gold(I)-NHC-catalysed synthesis of benzofurans via migratory cyclization of 2-alkynylaryl ethers. Org Biomol Chem 2020; 18:8186-8191. [PMID: 33026395 DOI: 10.1039/d0ob01538e] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
Homogeneous cationic gold(i) catalysis emerged as a preferred avenue for the activation of alkenes and alkynes towards reactions with weak nucleophiles, especially in cyclization reactions. Here we report an intramolecular carboalkoxylation reaction of electron-rich benzyl ethers of 2-ethynylaryl phenols catalysed by a digold(i)-NHC complex. The reaction proceeds efficiently with low catalyst loading and the resulting 2,3-disubstituted benzofurans form in moderate to good yields. Based on the results of a cross-over experiment, spectroscopic data, and DFT calculations, we propose a mechanism that accounts for the observed chemo- and regioselectivity.
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Affiliation(s)
- Quang Le
- California State University Fresno, 2555 E San Ramon Ave M/S SB70, Fresno, CA 93740, USA.
| | - Christopher C Dillon
- California State University Fresno, 2555 E San Ramon Ave M/S SB70, Fresno, CA 93740, USA.
| | - Dana A Lichtenstein
- California State University Fresno, 2555 E San Ramon Ave M/S SB70, Fresno, CA 93740, USA.
| | - Jeremy W Pisor
- California State University Fresno, 2555 E San Ramon Ave M/S SB70, Fresno, CA 93740, USA.
| | - Kristina D Closser
- California State University Fresno, 2555 E San Ramon Ave M/S SB70, Fresno, CA 93740, USA.
| | - Hubert Muchalski
- California State University Fresno, 2555 E San Ramon Ave M/S SB70, Fresno, CA 93740, USA.
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15
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Tiefenthaler SM, Streitferdt V, Baumann J, Gaertner S, Gschwind RM, Korber N. On the Reactivity of NHC
t
Bu
AuCl towards Rb
6
Cs
6
Si
17
: The First Gold‐Silicon Cluster [(NHC
t
Bu
Au)
6
(η
2
‐Si
4
)]Cl
2
·7NH
3
and an Imide Capped Gold Triangle (NHC
t
Bu
Au)
3
NHCl. Z Anorg Allg Chem 2020. [DOI: 10.1002/zaac.202000275] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
| | - Verena Streitferdt
- Institute of Organic Chemistry University of Regensburg 93040 Regensburg Germany
| | - Josef Baumann
- Institute of Inorganic Chemistry University of Regensburg 93040 Regensburg Germany
| | - Stefanie Gaertner
- Institute of Inorganic Chemistry University of Regensburg 93040 Regensburg Germany
| | - Ruth M. Gschwind
- Institute of Organic Chemistry University of Regensburg 93040 Regensburg Germany
| | - Nikolaus Korber
- Institute of Inorganic Chemistry University of Regensburg 93040 Regensburg Germany
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16
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Tzouras NV, Saab M, Janssens W, Cauwenbergh T, Van Hecke K, Nahra F, Nolan SP. Simple Synthetic Routes to N-Heterocyclic Carbene Gold(I)-Aryl Complexes: Expanded Scope and Reactivity. Chemistry 2020; 26:5541-5551. [PMID: 32077182 DOI: 10.1002/chem.202000876] [Citation(s) in RCA: 33] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2020] [Indexed: 12/31/2022]
Abstract
The discovery of sustainable and scalable synthetic protocols leading to gold-aryl compounds bearing N-heterocyclic carbene (NHC) ligands sparked an investigation of their reactivity and potential utility as organometallic synthons. The use of a mild base and green solvents provide access to these compounds, starting from widely available boronic acids and various [Au(NHC)Cl] complexes, with reactions taking place under air, at room temperature and leading to high yields with unprecedented ease. One compound, (N,N'-bis[2,6-(di-isopropyl)phenyl]imidazol-2-ylidene)(4-methoxyphenyl)gold, ([Au(IPr)(4-MeOC6 H4 )]), was synthesized on a multigram scale and used to gauge the reactivity of this class of compounds towards C-H/N-H bonds and with various acids, revealing simple pathways to gold-based species that possess attractive properties as materials, reagents and/or catalysts.
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Affiliation(s)
- Nikolaos V Tzouras
- Department of Chemistry and Centre for Sustainable Chemistry, Ghent University, Krijgslaan 281, S-3, 9000, Ghent, Belgium
| | - Marina Saab
- Department of Chemistry and Centre for Sustainable Chemistry, Ghent University, Krijgslaan 281, S-3, 9000, Ghent, Belgium
| | - Wim Janssens
- Department of Chemistry and Centre for Sustainable Chemistry, Ghent University, Krijgslaan 281, S-3, 9000, Ghent, Belgium
| | - Thibault Cauwenbergh
- Department of Chemistry and Centre for Sustainable Chemistry, Ghent University, Krijgslaan 281, S-3, 9000, Ghent, Belgium
| | - Kristof Van Hecke
- Department of Chemistry and Centre for Sustainable Chemistry, Ghent University, Krijgslaan 281, S-3, 9000, Ghent, Belgium
| | - Fady Nahra
- Department of Chemistry and Centre for Sustainable Chemistry, Ghent University, Krijgslaan 281, S-3, 9000, Ghent, Belgium
- Separation and Conversion Technology Unit, VITO (Flemish Institute for Technological Research), Boeretang 200, 2400, Mol, Belgium
| | - Steven P Nolan
- Department of Chemistry and Centre for Sustainable Chemistry, Ghent University, Krijgslaan 281, S-3, 9000, Ghent, Belgium
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17
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Dash C, Wang G, Muñoz-Castro A, Ponduru TT, Zacharias AO, Yousufuddin M, Dias HVR. Organic Azide and Auxiliary-Ligand-Free Complexes of Coinage Metals Supported by N-Heterocyclic Carbenes. Inorg Chem 2020; 59:2188-2199. [PMID: 31851494 DOI: 10.1021/acs.inorgchem.9b02771] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
Organic azide complexes of copper(I) and silver(I), [(SIPr)CuN(1-Ad)NN][SbF6], [(SIPr)CuN(2-Ad)NN][SbF6], [(SIPr)CuN(Cy)NN][SbF6], and [(SIPr)AgN(1-Ad)NN][SbF6] have been synthesized by using Ag[SbF6] and the corresponding organic azides with (SIPr)CuBr and (SIPr)AgCl (SIPr = 1,3-bis(2,6-diisopropylphenyl)imidazolin-2-ylidene). The copper and silver organic azide complexes were characterized by various spectroscopic techniques and X-ray crystallography. Group trends of isoleptic Cu(I), Ag(I), and Au(I) organic azide complexes are presented on the basis of experimental data and a detailed computational study. The νasym(N3) values of the metal-bound 1-AdNNN in [(SIPr)MN(1-Ad)NN]+ follow the order Ag < Cu < Au. DFT calculations show that gold(I) forms the strongest bond with 1-AdNNN in this series, while silver has the weakest interaction. Furthermore, auxiliary ligand free coinage metal N-heterocyclic carbene complexes, [(SIPr)M][SbF6], have been synthesized via metathesis reactions of (SIPr)MCl (M = Cu, Ag, Au) with Ag[SbF6]. X-ray crystal structures of dinuclear [(SIPr)Ag]2[SbF6]2 and [(SIPr)Au]2[SbF6]2 are also reported. They show close metallophilic contacts. [(SIPr)Au]2[SbF6]2 reacts with OEt2, SMe2, and CNtBu to afford [(SIPr)Au(OEt2)][SbF6], [(SIPr)Au(SMe2)][SbF6], and [(SIPr)Au(CNtBu)][SbF6] adducts, respectively.
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Affiliation(s)
- Chandrakanta Dash
- Department of Chemistry and Biochemistry , The University of Texas at Arlington , Arlington , Texas 76019 , United States
| | - Guocang Wang
- Department of Chemistry and Biochemistry , The University of Texas at Arlington , Arlington , Texas 76019 , United States
| | - Alvaro Muñoz-Castro
- Grupo de Química Inorgánica y Materiales Moleculares, Facultad de Ingenieria , Universidad Autonoma de Chile , El Llano Subercaseaux 2801 , Santiago , Chile
| | - Tharun T Ponduru
- Department of Chemistry and Biochemistry , The University of Texas at Arlington , Arlington , Texas 76019 , United States
| | - Adway O Zacharias
- Department of Chemistry and Biochemistry , The University of Texas at Arlington , Arlington , Texas 76019 , United States
| | - Muhammed Yousufuddin
- Department of Chemistry and Biochemistry , The University of Texas at Arlington , Arlington , Texas 76019 , United States
| | - H V Rasika Dias
- Department of Chemistry and Biochemistry , The University of Texas at Arlington , Arlington , Texas 76019 , United States
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18
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Ramos M, Poater J, Villegas‐Escobar N, Gimferrer M, Toro‐Labbé A, Cavallo L, Poater A. Phenoxylation of Alkynes through Mono‐ and Dual Activation Using Group 11 (Cu, Ag, Au) Catalysts. Eur J Inorg Chem 2020. [DOI: 10.1002/ejic.201901220] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
- Miguel Ramos
- Institut de Química Computacional i Catàlisi Departament de Química Universitat de Girona c/ Maria Aurèlia Capmany 69 17003 Girona Catalonia Spain
| | - Jordi Poater
- Departament de Química Inorgànica i Orgànica & IQTCUB Universitat de Barcelona Martí i Franquès 1–11 08028 Barcelona Spain
- ICREA Pg. Lluís Companys 23 08010 Barcelona Spain
| | - Nery Villegas‐Escobar
- Laboratorio de Química Teórica Computacional (QTC) Facultad de Química y de Farmacia Pontificia Universidad Católica de Chile Avenida Vicuña Mackenna 4860 7820436 Santiago Chile
| | - Martí Gimferrer
- Institut de Química Computacional i Catàlisi Departament de Química Universitat de Girona c/ Maria Aurèlia Capmany 69 17003 Girona Catalonia Spain
| | - Alejandro Toro‐Labbé
- Laboratorio de Química Teórica Computacional (QTC) Facultad de Química y de Farmacia Pontificia Universidad Católica de Chile Avenida Vicuña Mackenna 4860 7820436 Santiago Chile
| | - Luigi Cavallo
- King Abdullah University of Science & Technology KAUST Catalysis Center (KCC) 23955–6900 Thuwal Saudi Arabia
| | - Albert Poater
- Institut de Química Computacional i Catàlisi Departament de Química Universitat de Girona c/ Maria Aurèlia Capmany 69 17003 Girona Catalonia Spain
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19
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A. C. A. Bayrakdar T, Scattolin T, Ma X, Nolan SP. Dinuclear gold(i) complexes: from bonding to applications. Chem Soc Rev 2020; 49:7044-7100. [DOI: 10.1039/d0cs00438c] [Citation(s) in RCA: 48] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
The last two decades have seen a veritable explosion in the use of gold(i) complexes bearing N-heterocyclic carbene (NHC) and phosphine (PR3) ligands.
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Affiliation(s)
| | - Thomas Scattolin
- Department of Chemistry and Center for Sustainable Chemistry
- Ghent University
- Ghent
- Belgium
| | - Xinyuan Ma
- Department of Chemistry and Center for Sustainable Chemistry
- Ghent University
- Ghent
- Belgium
| | - Steven P. Nolan
- Department of Chemistry and Center for Sustainable Chemistry
- Ghent University
- Ghent
- Belgium
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20
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Visbal R, Herrera RP, Gimeno MC. Thiolate Bridged Gold(I)–NHC Catalysts: New Approach for Catalyst Design and its Application to Trapping Catalytic Intermediates. Chemistry 2019; 25:15837-15845. [DOI: 10.1002/chem.201903494] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2019] [Revised: 09/16/2019] [Indexed: 11/08/2022]
Affiliation(s)
- Renso Visbal
- Departamento de Química InorgánicaInstituto de Síntesis Química y Catálisis Homogénea (ISQCH), CSIC-Universidad de Zaragoza C/ Pedro Cerbuna 12 50009 Zaragoza Spain
- Departamento de QuímicaFacultad de Ciencias Naturales y Exactas, Universidad del Valle, A.A. 25360 Cali Colombia
| | - Raquel P. Herrera
- Departamento de Química Orgánica, Laboratorio de Organocatálisis AsimétricaInstituto de Síntesis Química y Catálisis Homogénea (ISQCH), CSIC-Universidad de Zaragoza C/ Pedro Cerbuna 12 50009 Zaragoza Spain
| | - M. Concepción Gimeno
- Departamento de Química InorgánicaInstituto de Síntesis Química y Catálisis Homogénea (ISQCH), CSIC-Universidad de Zaragoza C/ Pedro Cerbuna 12 50009 Zaragoza Spain
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21
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Gauthier R, Mamone M, Paquin JF. Gold-Catalyzed Hydrofluorination of Internal Alkynes Using Aqueous HF. Org Lett 2019; 21:9024-9027. [PMID: 31663758 DOI: 10.1021/acs.orglett.9b03425] [Citation(s) in RCA: 34] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
The gold-catalyzed hydrofluorination reaction of internal alkynes using hydrofluoric acid is reported. Notably, those conditions use one of the most economical sources of HF and are free of additional additives. Both symmetrical and unsymmetrical internal alkynes can be utilized, and the use of alkynes bearing a fluorinated group at the propargylic position as substrates allowed for a regioselective hydrofluorination reaction.
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Affiliation(s)
- Raphaël Gauthier
- CCVC, PROTEO, Département de chimie , Université Laval , 1045 Avenue de la Médecine , Québec , Québec G1V 0A6 , Canada
| | - Marius Mamone
- CCVC, PROTEO, Département de chimie , Université Laval , 1045 Avenue de la Médecine , Québec , Québec G1V 0A6 , Canada
| | - Jean-François Paquin
- CCVC, PROTEO, Département de chimie , Université Laval , 1045 Avenue de la Médecine , Québec , Québec G1V 0A6 , Canada
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22
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Sharma AK, Joshi H, Bhaskar R, Singh AK. Solvent-tailored Pd 3P 0.95 nano catalyst for amide-nitrile inter-conversion, the hydration of nitriles and transfer hydrogenation of the C[double bond, length as m-dash]O bond. Dalton Trans 2019; 48:10962-10970. [PMID: 31180393 DOI: 10.1039/c8dt04667k] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Abstract
For the first time, a one pot thermolysis of [Pd(PPh3)2Cl2] prepared by reacting Ph3P with PdCl2 in a 2 : 1 molar ratio in MeOH at 280 °C in a trioctylphosphine (TOP) and oleylamine(OA)-octadecane(ODE) mixture (1 : 1) was used to prepare quantum dots (QDs; size ∼2-3 nm) and nanoparticles (NPs; size ∼13-14 nm), respectively, of composition Pd3P0.95. TEM, SEM-EDX, powder-XRD and XPS (for QDs only) were used to authenticate the two nanophases. 31P{1H}NMR experiments performed to monitor the progress of thermolysis reactions revealed that the phosphorus present in the Pd3P0.95 QDs had come from TOP, whereas in Pd3P0.95 NPs, its source is triphenylphosphine. The nature of the solvent did not affect the chemical composition of the nano-phase but controlled its size. Probably, solvent dependent, unique, single source precursors (SSPs) of palladium were generated in situ, and controlled the size. The catalytic activity of both Pd3P0.95 QDs and NPs was explored. The QDs were found to be efficient as a catalyst for the amide-nitrile interconversion at room temperature (yield up to 92% in 4 h), hydration of nitriles and transfer hydrogenation (TH) of carbonyl compounds with yields up to 96% in 3-4 h. The yields and reaction rates of amide-nitrile inter-conversion and TH when catalyzed by Pd3P0.95 QDs were found to be higher compared to the ones observed with the Pd/C catalyst. The binding energy of Pd(3d) in the X-ray photoelectron spectrum (XPS) of Pd3P0.95 indicated an electron transfer from the metal to phosphorus, resulting in electron deficient palladium, which facilitates the coordination of a substrate to Pd and drives the reaction. The reusability of Pd3P0.95 QDs for the interconversion was found to be up to 4-times, while for the transfer hydrogenation of carbonyl compounds it was up to 6-times, but with a diminished yield. Pd3P0.95 NPs were found to be less active (yield up to 36% in optimized reaction conditions) in comparison to Pd3P0.95 QDs. The mercury poisoning test suggested that the catalysis predominantly proceeded heterogeneously on the surface of the QDs. The PXRD and XPS results did not suggest a significant variation in the phase of QDs after the third catalytic cycle. The bleeding of Pd during catalysis (determined by flame AAS) and the agglomeration of QDs as supported by the SEM-EDX and TEM results are probably responsible for the reduction in the catalytic activity of QDs after reusing three times.
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Affiliation(s)
- Alpesh K Sharma
- Department of Chemistry, Indian Institute of Technology Delhi, New Delhi-110016, India.
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23
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Michon C, Gilbert J, Trivelli X, Nahra F, Cazin CSJ, Agbossou-Niedercorn F, Nolan SP. Gold(i) catalysed regio- and stereoselective intermolecular hydroamination of internal alkynes: towards functionalised azoles. Org Biomol Chem 2019; 17:3805-3811. [DOI: 10.1039/c9ob00587k] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
Vinyl- and saturated azoles were synthesised through gold(i) catalysed regio- and stereoselective intermolecular hydroamination of internal alkynes and subsequent hydrogenation.
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Affiliation(s)
| | | | - Xavier Trivelli
- UGSF CNRS
- UMR 8576
- Univ. Lille
- 59655 Villeneuve d'Ascq Cedex
- France
| | - Fady Nahra
- Department of Chemistry
- Ghent University
- 9000 Gent
- Belgium
| | | | | | - Steven P. Nolan
- Department of Chemistry
- Ghent University
- 9000 Gent
- Belgium
- Department of Chemistry
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24
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Porchia M, Pellei M, Marinelli M, Tisato F, Del Bello F, Santini C. New insights in Au-NHCs complexes as anticancer agents. Eur J Med Chem 2018; 146:709-746. [PMID: 29407992 DOI: 10.1016/j.ejmech.2018.01.065] [Citation(s) in RCA: 116] [Impact Index Per Article: 19.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2017] [Revised: 01/18/2018] [Accepted: 01/19/2018] [Indexed: 01/03/2023]
Abstract
Within the research field of antitumor metal-based agents alternative to platinum drugs, gold(I/III) coordination complexes have always been in the forefront due mainly to the familiarity of medicinal chemists with gold compounds, whose application in medicine goes back in the ancient times, and to the rich chemistry shown by this metal. In the last decade, N-heterocyclic carbene ligands (NHC), a class of ligands that largely resembles the chemical properties of phosphines, became of interest for gold(I) medicinal applications, and since then, the research on NHC-gold(I/III) coordination complexes as potential antiproliferative agents boosted dramatically. Different classes of gold(I/III)-NHC complexes often showed an outstanding in vitro antiproliferative activity, however up to now very few in vivo data have been reported to corroborate the in vitro results. This review summarizes all achievements in the field of gold (I/III) complexes comprising NHC ligands proposed as potential antiproliferative agents in the period 2004-2016, and critically analyses biological data (mainly IC50 values) in relation to the chemical structures of Au compounds. The state of art of the in vivo studies so far described is also reported.
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Affiliation(s)
| | - Maura Pellei
- School of Science and Technology, Chemistry Division, University of Camerino, via S. Agostino 1, 62032 Camerino, Macerata, Italy.
| | - Marika Marinelli
- School of Science and Technology, Chemistry Division, University of Camerino, via S. Agostino 1, 62032 Camerino, Macerata, Italy
| | | | - Fabio Del Bello
- School of Pharmacy, Medicinal Chemistry Unit, University of Camerino, Via S. Agostino 1, 62032 Camerino, Macerata, Italy
| | - Carlo Santini
- School of Science and Technology, Chemistry Division, University of Camerino, via S. Agostino 1, 62032 Camerino, Macerata, Italy
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25
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Yao C, Chakraborty P, Aresu E, Li H, Guan C, Zhou C, Liang LC, Huang KW. Monomeric nickel hydroxide stabilized by a sterically demanding phosphorus–nitrogen PN3P-pincer ligand: synthesis, reactivity and catalysis. Dalton Trans 2018; 47:16057-16065. [DOI: 10.1039/c8dt03403f] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Various new nickel complexes and amides are synthesized using monomeric nickel hydroxide (PN3P)Ni(OH) (3) as the precursor or catalyst.
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Affiliation(s)
- Changguang Yao
- KAUST Catalysis Center and Division of Physical Sciences and Engineering
- King Abdullah University of Science and Technology
- Thuwal 23955-6900
- Saudi Arabia
| | - Priyanka Chakraborty
- KAUST Catalysis Center and Division of Physical Sciences and Engineering
- King Abdullah University of Science and Technology
- Thuwal 23955-6900
- Saudi Arabia
| | - Emanuele Aresu
- KAUST Catalysis Center and Division of Physical Sciences and Engineering
- King Abdullah University of Science and Technology
- Thuwal 23955-6900
- Saudi Arabia
| | - Huaifeng Li
- KAUST Catalysis Center and Division of Physical Sciences and Engineering
- King Abdullah University of Science and Technology
- Thuwal 23955-6900
- Saudi Arabia
| | - Chao Guan
- KAUST Catalysis Center and Division of Physical Sciences and Engineering
- King Abdullah University of Science and Technology
- Thuwal 23955-6900
- Saudi Arabia
| | - Chunhui Zhou
- KAUST Catalysis Center and Division of Physical Sciences and Engineering
- King Abdullah University of Science and Technology
- Thuwal 23955-6900
- Saudi Arabia
| | - Lan-Chang Liang
- Department of Chemistry
- National Sun Yat-sen University
- Kaohsiung 80424
- Taiwan
- Department of Medicinal and Applied Chemistry
| | - Kuo-Wei Huang
- KAUST Catalysis Center and Division of Physical Sciences and Engineering
- King Abdullah University of Science and Technology
- Thuwal 23955-6900
- Saudi Arabia
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26
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González-Belman OF, Jiménez-Halla JOC, Nahra F, Cazin CSJ, Poater A. The role of the metal in the dual-metal catalysed hydrophenoxylation of diphenylacetylene. Catal Sci Technol 2018. [DOI: 10.1039/c8cy00510a] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Computational studies on homo- and heterobimetallic group 11 metal-NHC complexes were carried out, providing insights into the catalysed-hydrophenoxylation of alkynes.
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Affiliation(s)
- Oscar F. González-Belman
- Institut de Química Computacional i Catàlisi
- Departament de Química
- University de Girona
- 17003 Girona
- Spain
| | | | - Fady Nahra
- Department of Chemistry
- Centre for Sustainable Chemistry
- Ghent University
- 9000 Gent
- Belgium
| | - Catherine S. J. Cazin
- Department of Chemistry
- Centre for Sustainable Chemistry
- Ghent University
- 9000 Gent
- Belgium
| | - Albert Poater
- Institut de Química Computacional i Catàlisi
- Departament de Química
- University de Girona
- 17003 Girona
- Spain
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27
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Abdellah I, Poater A, Lohier JF, Gaumont AC. Au(i)-Catalyzed hydroarylation of alkenes with N,N-dialkylanilines: a dual gold catalysis concept. Catal Sci Technol 2018. [DOI: 10.1039/c8cy01309h] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
In the present work, we report the efficiency of the commercially available [(PPh3)AuCl] complex in combination with a set of potassium salts to catalyze the hydroarylation of a broad variety of alkenes using N,N-dialkylanilines, leading to full conversion and complete selectivity toward the Markovnikov products.
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Affiliation(s)
| | - Albert Poater
- Institut de Química Computacional i Catàlisi and Departament de Química
- Universitat de Girona
- 17003 Girona
- Spain
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28
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Iwai T, Ueno M, Okochi H, Sawamura M. Synthesis of Cyclobutene-Fused Eight-Membered Carbocycles through Gold-Catalyzed Intramolecular Enyne [2+2] Cycloaddition. Adv Synth Catal 2017. [DOI: 10.1002/adsc.201701193] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Affiliation(s)
- Tomohiro Iwai
- Department of Chemistry, Faculty of Science; Hokkaido University; Sapporo 060-0810 Japan
| | - Masahiro Ueno
- Department of Chemistry, Faculty of Science; Hokkaido University; Sapporo 060-0810 Japan
| | - Hiori Okochi
- Department of Chemistry, Faculty of Science; Hokkaido University; Sapporo 060-0810 Japan
| | - Masaya Sawamura
- Department of Chemistry, Faculty of Science; Hokkaido University; Sapporo 060-0810 Japan
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29
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Nelson DJ, Nolan SP. Hydroxide complexes of the late transition metals: Organometallic chemistry and catalysis. Coord Chem Rev 2017. [DOI: 10.1016/j.ccr.2017.10.012] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
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30
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Veenboer RMP, Gasperini D, Nahra F, Cordes DB, Slawin AMZ, Cazin CSJ, Nolan SP. Expedient Syntheses of Neutral and Cationic Au(I)–NHC Complexes. Organometallics 2017. [DOI: 10.1021/acs.organomet.7b00622] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Affiliation(s)
- Richard M. P. Veenboer
- School
of Chemistry, University of St Andrews, North Haugh, St Andrews KY16 9ST, United Kingdom
| | - Danila Gasperini
- School
of Chemistry, University of St Andrews, North Haugh, St Andrews KY16 9ST, United Kingdom
| | - Fady Nahra
- Department
of Inorganic and Physical Chemistry, Ghent University, Building S3, Krijgslaan 281, 9000 Gent, Belgium
| | - David B. Cordes
- School
of Chemistry, University of St Andrews, North Haugh, St Andrews KY16 9ST, United Kingdom
| | - Alexandra M. Z. Slawin
- School
of Chemistry, University of St Andrews, North Haugh, St Andrews KY16 9ST, United Kingdom
| | - Catherine S. J. Cazin
- Department
of Inorganic and Physical Chemistry, Ghent University, Building S3, Krijgslaan 281, 9000 Gent, Belgium
| | - Steven P. Nolan
- Department
of Inorganic and Physical Chemistry, Ghent University, Building S3, Krijgslaan 281, 9000 Gent, Belgium
- Department
of Chemistry, College of Science, King Saud University, P.O. Box 2455, Riyadh 11451, Saudi Arabia
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31
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Veenboer RMP, Collado A, Dupuy S, Lebl T, Falivene L, Cavallo L, Cordes DB, Slawin AMZ, Cazin CSJ, Nolan SP. Inner-Sphere versus Outer-Sphere Coordination of BF4– in a NHC-Gold(I) Complex. Organometallics 2017. [DOI: 10.1021/acs.organomet.7b00345] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Affiliation(s)
- Richard M. P. Veenboer
- EaStCHEM,
School of Chemistry, University of St Andrews, North Haugh, St Andrews KY16 9ST, United Kingdom
| | - Alba Collado
- EaStCHEM,
School of Chemistry, University of Edinburgh, Joseph Black Building, David Brewster
Road, Edinburgh EH9 3FJ, United Kingdom
| | - Stéphanie Dupuy
- EaStCHEM,
School of Chemistry, University of St Andrews, North Haugh, St Andrews KY16 9ST, United Kingdom
| | - Tomas Lebl
- EaStCHEM,
School of Chemistry, University of St Andrews, North Haugh, St Andrews KY16 9ST, United Kingdom
| | - Laura Falivene
- Physical
Sciences and Engineering Division, King Abdullah University of Science and Technology, Thuwal, Saudi Arabia
| | - Luigi Cavallo
- Physical
Sciences and Engineering Division, King Abdullah University of Science and Technology, Thuwal, Saudi Arabia
| | - David B. Cordes
- EaStCHEM,
School of Chemistry, University of St Andrews, North Haugh, St Andrews KY16 9ST, United Kingdom
| | - Alexandra M. Z. Slawin
- EaStCHEM,
School of Chemistry, University of St Andrews, North Haugh, St Andrews KY16 9ST, United Kingdom
| | - Catherine S. J. Cazin
- Department
of Inorganic and Physical Chemistry, Ghent University, Building S3, Krijgslaan 281, 9000 Gent, Belgium
| | - Steven P. Nolan
- Department
of Inorganic and Physical Chemistry, Ghent University, Building S3, Krijgslaan 281, 9000 Gent, Belgium
- Department
of Chemistry, College of Science, King Saud University, P.O. Box 2455, Riyadh 11451, Saudi Arabia
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32
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Clean and selective catalytic C-H alkylation of alkenes with environmental friendly alcohols. MOLECULAR CATALYSIS 2017. [DOI: 10.1016/j.molcata.2016.09.010] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
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33
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Casals-Cruañas È, González-Belman OF, Besalú-Sala P, Nelson DJ, Poater A. The preference for dual-gold(i) catalysis in the hydro(alkoxylation vs. phenoxylation) of alkynes. Org Biomol Chem 2017; 15:6416-6425. [DOI: 10.1039/c7ob01457k] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Dinuclear gold complexes and their use in catalysis have received significant recent attention, but there are few critical comparisons of mono- versus dual gold-catalysed pathways.
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Affiliation(s)
- Èric Casals-Cruañas
- Institut de Química Computacional i Catàlisi
- Departament de Química
- University de Girona
- 17003 Girona
- Spain
| | - Oscar F. González-Belman
- Institut de Química Computacional i Catàlisi
- Departament de Química
- University de Girona
- 17003 Girona
- Spain
| | - Pau Besalú-Sala
- Institut de Química Computacional i Catàlisi
- Departament de Química
- University de Girona
- 17003 Girona
- Spain
| | - David J. Nelson
- WestCHEM Department of Pure and Applied Chemistry
- University of Strathclyde
- Glasgow
- UK
| | - Albert Poater
- Institut de Química Computacional i Catàlisi
- Departament de Química
- University de Girona
- 17003 Girona
- Spain
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34
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Gasperini D, Maggi L, Dupuy S, Veenboer RMP, Cordes DB, Slawin AMZ, Nolan SP. Gold(I)-Catalysed Cyclisation of Alkynoic Acids: Towards an Efficient and Eco-Friendly Synthesis of γ-, δ- and ϵ-Lactones. Adv Synth Catal 2016. [DOI: 10.1002/adsc.201600575] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Affiliation(s)
- Danila Gasperini
- EastCHEM; School of Chemistry; University of St Andrews; Purdie Building, North Haugh; St Andrews, Fife KY16 9ST U.K
| | - Lorenzo Maggi
- EastCHEM; School of Chemistry; University of St Andrews; Purdie Building, North Haugh; St Andrews, Fife KY16 9ST U.K
| | - Stéphanie Dupuy
- EastCHEM; School of Chemistry; University of St Andrews; Purdie Building, North Haugh; St Andrews, Fife KY16 9ST U.K
| | - Richard M. P. Veenboer
- EastCHEM; School of Chemistry; University of St Andrews; Purdie Building, North Haugh; St Andrews, Fife KY16 9ST U.K
| | - David B. Cordes
- EastCHEM; School of Chemistry; University of St Andrews; Purdie Building, North Haugh; St Andrews, Fife KY16 9ST U.K
| | - Alexandra M. Z. Slawin
- EastCHEM; School of Chemistry; University of St Andrews; Purdie Building, North Haugh; St Andrews, Fife KY16 9ST U.K
| | - Steven P. Nolan
- Universiteit Gent; Department of Inorganic and Physical Chemistry; Krijgslaan 281, S-3 B-9000 Ghent Belgium
- Department of Chemistry; College of Science; King Saud University; P. O. Box 2455 Riyadh 1451 Saudi Arabia
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35
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Jans ACH, Gómez-Suárez A, Nolan SP, Reek JNH. A Switchable Gold Catalyst by Encapsulation in a Self-Assembled Cage. Chemistry 2016; 22:14836-14839. [PMID: 27542162 PMCID: PMC5053284 DOI: 10.1002/chem.201603162] [Citation(s) in RCA: 64] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2016] [Indexed: 11/19/2022]
Abstract
Dinuclear gold complexes have the ability to interact with one or more substrates in a dual-activation mode, leading to different reactivity and selectivity than their mononuclear relatives. In this contribution, this difference was used to control the catalytic properties of a gold-based catalytic system by site-isolation of mononuclear gold complexes by selective encapsulation. The typical dual-activation mode is prohibited by this catalyst encapsulation, leading to typical behavior as a result of mononuclear activation. This strategy can be used as a switch (on/off) for a catalytic reaction and also permits reversible control over the product distribution during the course of a reaction.
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Affiliation(s)
- Anne C H Jans
- Homogeneous, Bioinspired and Supramolecular Catalysis, van 't Hoff Institute for Molecular Sciences, University of Amsterdam, Science Park 904, 1098 XH, Amsterdam, the Netherlands
| | | | - Steven P Nolan
- Department of Inorganic and Physical Chemistry, Ghent University, Krijgslaan 281 - S3, 9000, Gent, Belgium
- Chemistry Department, College of Science, King Saud university PO Box 2455, Riyadh, 11451, Saudi Arabia
| | - Joost N H Reek
- Homogeneous, Bioinspired and Supramolecular Catalysis, van 't Hoff Institute for Molecular Sciences, University of Amsterdam, Science Park 904, 1098 XH, Amsterdam, the Netherlands.
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36
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Zhu Y, Zhou W, Petryna EM, Rogers BR, Day CS, Jones AC. Insights into Alkene Activation by Gold: Nucleophile Activation with Base as a Trigger for Generation of Lewis Acidic Gold. ACS Catal 2016. [DOI: 10.1021/acscatal.6b01674] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Yuyang Zhu
- Department
of Chemistry, Wake Forest University, Salem Hall, Box 7486, Winston-Salem, North Carolina 27109, United States
| | - Wentong Zhou
- Department
of Chemistry, Wake Forest University, Salem Hall, Box 7486, Winston-Salem, North Carolina 27109, United States
| | - Ellen M. Petryna
- Department
of Chemistry, Wake Forest University, Salem Hall, Box 7486, Winston-Salem, North Carolina 27109, United States
| | - Brock R. Rogers
- Department
of Chemistry, Wake Forest University, Salem Hall, Box 7486, Winston-Salem, North Carolina 27109, United States
| | - Cynthia S. Day
- Department
of Chemistry, Wake Forest University, Salem Hall, Box 7486, Winston-Salem, North Carolina 27109, United States
| | - Amanda C. Jones
- Department
of Chemistry, Wake Forest University, Salem Hall, Box 7486, Winston-Salem, North Carolina 27109, United States
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37
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Bartolomé C, Ramiro Z, Peñas-Defrutos MN, Espinet P. Some Singular Features of Gold Catalysis: Protection of Gold(I) Catalysts by Substoichiometric Agents and Associated Phenomena. ACS Catal 2016. [DOI: 10.1021/acscatal.6b01825] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Camino Bartolomé
- IU CINQUIMA/Química
Inorgánica, Facultad de Ciencias, Universidad de Valladolid, 47071 Valladolid, Spain
| | - Zoraida Ramiro
- IU CINQUIMA/Química
Inorgánica, Facultad de Ciencias, Universidad de Valladolid, 47071 Valladolid, Spain
| | - Marconi N. Peñas-Defrutos
- IU CINQUIMA/Química
Inorgánica, Facultad de Ciencias, Universidad de Valladolid, 47071 Valladolid, Spain
| | - Pablo Espinet
- IU CINQUIMA/Química
Inorgánica, Facultad de Ciencias, Universidad de Valladolid, 47071 Valladolid, Spain
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38
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Falivene L, Nelson DJ, Dupuy S, Nolan SP, Poater A, Cavallo L. Mechanism of the Transmetalation of Organosilanes to Gold. ChemistryOpen 2016; 5:60-4. [PMID: 27308213 PMCID: PMC4906480 DOI: 10.1002/open.201500172] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2015] [Indexed: 12/02/2022] Open
Abstract
Density functional theory (DFT) calculations were carried out to study the reaction mechanism of the first transmetalation of organosilanes to gold as a cheap fluoride‐free process. The versatile gold(I) complex [Au(OH)(IPr)] permits very straightforward access to a series of aryl‐, vinyl‐, and alkylgold silanolates by reaction with the appropriate silane reagent. These silanolate compounds are key intermediates in a fluoride‐free process that results in the net transmetalation of organosilanes to gold, rather than the classic activation of silanes as silicates using external fluoride sources. However, here we propose that the gold silanolate is not the active species (as proposed during experimental studies) but is, in fact, a resting state during the transmetalation process, as a concerted step is preferred.
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Affiliation(s)
- Laura Falivene
- KAUST Catalysis Center Physical Sciences and Engineering Division King Abdullah University of Science and Technology Thuwal 23955-6900 Saudi Arabia
| | - David J Nelson
- WestCHEM Department of Pure & Applied Chemistry University of Strathclyde Thomas Graham Building 295 Cathedral Street Glasgow G1 1XL UK
| | - Stéphanie Dupuy
- EaStCHEM School of Chemistry University of St. Andrews North Haugh St. Andrews Fife KY16 9ST UK
| | - Steven P Nolan
- EaStCHEM School of Chemistry University of St. Andrews North Haugh St. Andrews Fife KY16 9ST UK; Chemistry Department College of Science King Saud University P.O. Box 2455 Riyadh 11451 Saudi Arabia
| | - Albert Poater
- Institut de Química Computacional i Catàlisi and Departament de Química Universitat de Girona Campus Montilivi 17071 Girona Catalonia Spain
| | - Luigi Cavallo
- KAUST Catalysis Center Physical Sciences and Engineering Division King Abdullah University of Science and Technology Thuwal 23955-6900 Saudi Arabia
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39
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Morozov OS, Gribanov PS, Asachenko AF, Dorovatovskii PV, Khrustalev VN, Rybakov VB, Nechaev MS. Hydrohydrazination of Arylalkynes Catalyzed by an Expanded Ring N-Heterocyclic Carbene (er-NHC) Gold Complex Under Solvent-Free Conditions. Adv Synth Catal 2016. [DOI: 10.1002/adsc.201500658] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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40
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Al-Majid AM, Yousuf S, Choudhary MI, Nahra F, Nolan SP. Gold-NHC complexes as potent bioactive compounds. ChemistrySelect 2016. [DOI: 10.1002/slct.201600009] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Affiliation(s)
- Abdullah M. Al-Majid
- Department of Chemistry; College of Science; King Saud University, P. O. Box 2455 Riyadh 11451 Saudi Arabia
| | - Sammer Yousuf
- H.E.J. Research Institute of Chemistry; International Center for Chemical and Biological Sciences; University of Karachi Karachi- 75270 Pakistan
| | - M. Iqbal Choudhary
- Department of Chemistry; College of Science; King Saud University, P. O. Box 2455 Riyadh 11451 Saudi Arabia
- H.E.J. Research Institute of Chemistry; International Center for Chemical and Biological Sciences; University of Karachi Karachi- 75270 Pakistan
| | - Fady Nahra
- Universiteit Gent; Department of Inorganic and Physical Chemistry; Krijgslaan 281, S-3 B-9000 Ghent Belgium
| | - Steven P. Nolan
- Department of Chemistry; College of Science; King Saud University, P. O. Box 2455 Riyadh 11451 Saudi Arabia
- Universiteit Gent; Department of Inorganic and Physical Chemistry; Krijgslaan 281, S-3 B-9000 Ghent Belgium
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41
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Gómez-Suárez A, Oonishi Y, Martin AR, Vummaleti SVC, Nelson DJ, Cordes DB, Slawin AMZ, Cavallo L, Nolan SP, Poater A. On the Mechanism of the Digold(I)-Hydroxide-Catalysed Hydrophenoxylation of Alkynes. Chemistry 2015; 22:1125-32. [DOI: 10.1002/chem.201503097] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2015] [Indexed: 12/26/2022]
Affiliation(s)
- Adrián Gómez-Suárez
- EaStCHEM School of Chemistry; University of St. Andrews; North Haugh St. Andrews, Fife KY16 9ST UK
| | - Yoshihiro Oonishi
- EaStCHEM School of Chemistry; University of St. Andrews; North Haugh St. Andrews, Fife KY16 9ST UK
- Faculty of Pharmaceutical Sciences; Hokkaido University; Sapporo 060-0812 Japan
| | - Anthony R. Martin
- EaStCHEM School of Chemistry; University of St. Andrews; North Haugh St. Andrews, Fife KY16 9ST UK
- Institut de Chimie de Nice; UMR 7272; Université de Nice Sophia Antipolis, CNRS; Parc Valrose 06108 Nice cedex 2 France
| | - Sai V. C. Vummaleti
- KAUST Catalysis Center; Physical Sciences and Engineering Division; King Abdullah University of Science and Technology; Thuwal 23955-6900 Saudi Arabia
| | - David J. Nelson
- EaStCHEM School of Chemistry; University of St. Andrews; North Haugh St. Andrews, Fife KY16 9ST UK
- WestCHEM Department of Pure & Applied Chemistry; University of Strathclyde, Thomas Graham Building; 295 Cathedral Street Glasgow G1 1XL UK
| | - David B. Cordes
- EaStCHEM School of Chemistry; University of St. Andrews; North Haugh St. Andrews, Fife KY16 9ST UK
| | - Alexandra M. Z. Slawin
- EaStCHEM School of Chemistry; University of St. Andrews; North Haugh St. Andrews, Fife KY16 9ST UK
| | - Luigi Cavallo
- KAUST Catalysis Center; Physical Sciences and Engineering Division; King Abdullah University of Science and Technology; Thuwal 23955-6900 Saudi Arabia
| | - Steven P. Nolan
- Chemistry Department; College of Science; King Saud University; P.O. Box 2455 Riyadh 11451 Saudi Arabia
| | - Albert Poater
- Institut de Química Computacional i Catàlisi and Departament de Química; Universitat de Girona; Campus Montilivi 17071 Girona, Catalonia Spain
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42
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Collado A, Patrick SR, Gasperini D, Meiries S, Nolan SP. Influence of bulky yet flexible N-heterocyclic carbene ligands in gold catalysis. Beilstein J Org Chem 2015; 11:1809-14. [PMID: 26664600 PMCID: PMC4661005 DOI: 10.3762/bjoc.11.196] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2015] [Accepted: 09/04/2015] [Indexed: 01/05/2023] Open
Abstract
Three new Au(I) complexes of the formula [Au(NHC)(NTf2)] (NHC = N-heterocyclic carbene) bearing bulky and flexible ligands have been synthesised. The ligands studied are IPent, IHept and INon which belong to the ‘ITent’ (‘Tent’ for ‘tentacular’) family of NHC derivatives. The effect of these ligands in gold-promoted transformations has been investigated.
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Affiliation(s)
- Alba Collado
- EaStCHEM School of Chemistry, University of St Andrews, St Andrews, KY16 9ST, UK
| | - Scott R Patrick
- EaStCHEM School of Chemistry, University of St Andrews, St Andrews, KY16 9ST, UK
| | - Danila Gasperini
- EaStCHEM School of Chemistry, University of St Andrews, St Andrews, KY16 9ST, UK
| | - Sebastien Meiries
- EaStCHEM School of Chemistry, University of St Andrews, St Andrews, KY16 9ST, UK
| | - Steven P Nolan
- Chemistry Department, College of Science, King Saud University, Riyadh 11451, Saudi Arabia
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43
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Pandey KK, Vishwakarma R, Bariya PK. Quantum chemical insight into C–H⋯F bonding interactions between noncovalently bonded ion-pairs in N-heterocyclic carbene complexes of gold(I) [(NHC*)2Au]+[PF6]−and gold(III) [(NHC*)2AuCl2]+[PF6]−. J Organomet Chem 2015. [DOI: 10.1016/j.jorganchem.2014.11.028] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
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44
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Bugoni S, Merlini V, Porta A, Gaillard S, Zanoni G, Nolan SP, Vidari G. Competitive Gold-Promoted Meyer-Schuster and oxy-Cope Rearrangements of 3-Acyloxy-1,5-enynes: Selective Catalysis for the Synthesis of (+)-(S)-γ-Ionone and (-)-(2S,6 R)-cis-γ-Irone. Chemistry 2015; 21:14068-74. [PMID: 26315968 DOI: 10.1002/chem.201502382] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2015] [Indexed: 11/10/2022]
Abstract
We report a simple, highly stereoselective synthesis of (+)-(S)-γ-ionone and (-)-(2S,6R)-cis-γ-irone, two characteristic and precious odorants; the latter compound is a constituent of the essential oil obtained from iris rhizomes. Of general interest in this approach are the photoisomerization of an endo trisubstituted cyclohexene double bond to an exo vinyl group and the installation of the enone side chain through a [(NHC)Au(I)]-catalyzed Meyer-Schuster-like rearrangement. This required a careful investigation of the mechanism of the gold-catalyzed reaction and a judicious selection of reaction conditions. In fact, it was found that the Meyer-Schuster reaction may compete with the oxy-Cope rearrangement. Gold-based catalytic systems can promote either reaction selectively. In the present system, the mononuclear gold complex [Au(IPr)Cl], in combination with the silver salt AgSbF6 in 100:1 butan-2-one/H2O, proved to efficiently promote the Meyer-Schuster rearrangement of propargylic benzoates, whereas the digold catalyst [{Au(IPr)}2(μ-OH)][BF4] in anhydrous dichloromethane selectively promoted the oxy-Cope rearrangement of propargylic alcohols.
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Affiliation(s)
- Serena Bugoni
- Dipartimento di Chimica - Sezione Chimica Organica, Università degli Studi di Pavia, Via Taramelli 12, 27100 Pavia (Italy)
| | - Valentina Merlini
- Dipartimento di Chimica - Sezione Chimica Organica, Università degli Studi di Pavia, Via Taramelli 12, 27100 Pavia (Italy)
| | - Alessio Porta
- Dipartimento di Chimica - Sezione Chimica Organica, Università degli Studi di Pavia, Via Taramelli 12, 27100 Pavia (Italy)
| | - Sylvain Gaillard
- EaStCHEM School of Chemistry, University of St. Andrews, North Haugh, KY16 9ST St. Andrews (UK)
| | - Giuseppe Zanoni
- Dipartimento di Chimica - Sezione Chimica Organica, Università degli Studi di Pavia, Via Taramelli 12, 27100 Pavia (Italy)
| | - Steven P Nolan
- EaStCHEM School of Chemistry, University of St. Andrews, North Haugh, KY16 9ST St. Andrews (UK).,Chemistry Department, College of Science, King Saud University, P.O. Box 2455, Riyadh 11451 (Saudi Arabia)
| | - Giovanni Vidari
- Dipartimento di Chimica - Sezione Chimica Organica, Università degli Studi di Pavia, Via Taramelli 12, 27100 Pavia (Italy).
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45
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Levin E, Ivry E, Diesendruck CE, Lemcoff NG. Water in N-heterocyclic carbene-assisted catalysis. Chem Rev 2015; 115:4607-92. [PMID: 25942582 DOI: 10.1021/cr400640e] [Citation(s) in RCA: 182] [Impact Index Per Article: 20.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Efrat Levin
- †Chemistry Department, Ben-Gurion University of the Negev, Beer-Sheva 84105, Israel
| | - Elisa Ivry
- †Chemistry Department, Ben-Gurion University of the Negev, Beer-Sheva 84105, Israel
| | - Charles E Diesendruck
- ‡Schulich Faculty of Chemistry, Technion-Israel Institute of Technology, Haifa 32000, Israel
| | - N Gabriel Lemcoff
- †Chemistry Department, Ben-Gurion University of the Negev, Beer-Sheva 84105, Israel
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46
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Veenboer RP, Dupuy S, Nolan SP. Stereoselective Gold(I)-Catalyzed Intermolecular Hydroalkoxlation of Alkynes. ACS Catal 2015; 5:1330-1334. [PMID: 29291136 PMCID: PMC5745073 DOI: 10.1021/cs501976s] [Citation(s) in RCA: 74] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2014] [Revised: 01/20/2015] [Indexed: 01/16/2023]
Abstract
We report the use of cationic gold complexes [Au(NHC)(CH3CN)][BF4] and [{Au(NHC)}2(μ-OH)][BF4] (NHC = N-heterocyclic carbene) as highly active catalysts in the solvent-free hydroalkoxylation of internal alkynes using primary and secondary alcohols. Using this simple protocol, a broad range of (Z)-vinyl ethers were obtained in excellent yields and high stereoselectivities. The methodology allows for the use of catalyst loadings as low as 200 ppm for the addition of primary alcohols to internal alkynes (TON = 35 000, TOF = 2188 h-1).
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Affiliation(s)
| | | | - Steven P. Nolan
- EaStCHEM School of Chemistry, University of St. Andrews, North Haugh, St. Andrews, Fife KY16 9ST, U.K.
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47
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48
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Wyss CM, Tate BK, Bacsa J, Wieliczko M, Sadighi JP. Dinuclear μ-fluoro cations of copper, silver and gold. Polyhedron 2014. [DOI: 10.1016/j.poly.2014.06.039] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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49
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Wickramasinghe LA, Sharp PR. Hydroxo Radicals, C–H Activation, and Pt–C Bond Formation from 77 K Photolysis of a Platinum(IV) Hydroxo Complex. Inorg Chem 2014; 53:11812-4. [DOI: 10.1021/ic502325r] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Affiliation(s)
- Lasantha A. Wickramasinghe
- Department of Chemistry, University of Missouri, 125 Chemistry
Building, Columbia, Missouri 65211-7600, United States
| | - Paul R. Sharp
- Department of Chemistry, University of Missouri, 125 Chemistry
Building, Columbia, Missouri 65211-7600, United States
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50
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Collado A, Gómez-Suárez A, Webb PB, Kruger H, Bühl M, Cordes DB, Slawin AMZ, Nolan SP. Trapping atmospheric CO2 with gold. Chem Commun (Camb) 2014; 50:11321-4. [PMID: 25116899 DOI: 10.1039/c4cc05910g] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
The ability of gold-hydroxides to fix CO2 is reported. [Au(IPr)(OH)] and [{Au(IPr)}2(μ-OH)][BF4] react with atmospheric CO2 to form the trigold carbonate complex [{Au(IPr)}3(μ(3)-CO3)][BF4]. Reactivity studies revealed that this complex behaves as two basic and one cationic Au centres, and that it is catalytically active. DFT calculations and kinetic experiments have been carried out.
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Affiliation(s)
- Alba Collado
- EaStCHEM School of Chemistry, University of St Andrews, St Andrews, KY16 9ST, UK.
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