1
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Hatano A, Matsuzaka R, Shimane G, Wakana H, Suzuki K, Nishioka C, Kojima A, Kidowaki M. Introduction of pseudo-base benzimidazole derivatives into nucleosides via base exchange by a nucleoside metabolic enzyme. Bioorg Med Chem 2023; 91:117411. [PMID: 37451053 DOI: 10.1016/j.bmc.2023.117411] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2023] [Revised: 07/07/2023] [Accepted: 07/08/2023] [Indexed: 07/18/2023]
Abstract
In alternate organic synthesis, biocatalysis using enzymes provides a more stereoselective and cost-effective approach. Synthesis of unnatural nucleosides by nucleoside base exchange reactions using nucleoside-metabolizing enzymes has previously shown that the 5-position recognition of pyrimidine bases on nucleoside substrates is loose and can be used to introduce functional molecules into pyrimidine nucleosides. Here we explored the incorporation of purine pseudo bases into nucleosides by the base exchange reaction of pyrimidine nucleoside phosphorylase (PyNP), demonstrating that an imidazole five-membered ring is an essential structure for the reaction. In the case of benzimidazole, the base exchange proceeded to give the deoxyribose form in 96 % yield, and the ribose form in 23 % yield. The reaction also proceeded with 1H-imidazo[4,5-b]phenazine, a benzimidazole analogue with an additional ring, although the yield of nucleoside was only 31 %. Docking simulations between 1H and imidazo[4,5-b]phenazine nucleoside and the active site of PyNP (PDB 1BRW) supported our observation that 1H-imidazo[4,5-b]phenazine can be used as a substrate by PyNP. Thus, the enzymatic substitution reaction using PyNP can be used to incorporate many purine pseudo bases and benzimidazole derivatives with various functional groups into nucleoside structures, which have potential utility as diagnostic or therapeutic agents.
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Affiliation(s)
- Akihiko Hatano
- Department of Materials Science and Engineering, Shibaura Institute of Technology, 307 Fukasaku, Minuma-ku, Saitama 337-8570, Japan.
| | - Riki Matsuzaka
- Department of Materials Science and Engineering, Shibaura Institute of Technology, 307 Fukasaku, Minuma-ku, Saitama 337-8570, Japan
| | - Genki Shimane
- Department of Materials Science and Engineering, Shibaura Institute of Technology, 307 Fukasaku, Minuma-ku, Saitama 337-8570, Japan
| | - Hiroyuki Wakana
- Department of Materials Science and Engineering, Shibaura Institute of Technology, 307 Fukasaku, Minuma-ku, Saitama 337-8570, Japan
| | - Kou Suzuki
- Department of Materials Science and Engineering, Shibaura Institute of Technology, 307 Fukasaku, Minuma-ku, Saitama 337-8570, Japan
| | - Chisato Nishioka
- Department of Materials Science and Engineering, Shibaura Institute of Technology, 307 Fukasaku, Minuma-ku, Saitama 337-8570, Japan
| | - Aoi Kojima
- Department of Materials Science and Engineering, Shibaura Institute of Technology, 307 Fukasaku, Minuma-ku, Saitama 337-8570, Japan
| | - Masatoshi Kidowaki
- Department of Applied Chemistry, Shibaura Institute of Technology, 3-7-5, Toyosu, Koto-ku, Tokyo 135-8548, Japan
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2
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Marczyk A, Trzaskowski B. Ruthenium Metathesis Catalysts Bearing Anionic N-Heterocyclic Carbenes: A Computational Study on Failed Approaches to Their Synthesis. Organometallics 2023. [DOI: 10.1021/acs.organomet.3c00068] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/08/2023]
Affiliation(s)
- Anna Marczyk
- Centre of New Technologies, University of Warsaw, ul. Banacha 2C, 02-097 Warsaw, Poland
- Faculty of Chemistry, University of Warsaw, ul. Pasteura 1, 02-091 Warsaw, Poland
| | - Bartosz Trzaskowski
- Centre of New Technologies, University of Warsaw, ul. Banacha 2C, 02-097 Warsaw, Poland
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3
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Ruiz‐Zambrana C, Dubey RK, Poyatos M, Mateo‐Alonso A, Peris E. Redox-Switchable Complexes Based on Nanographene-NHCs. Chemistry 2022; 28:e202201384. [PMID: 35638131 PMCID: PMC9400984 DOI: 10.1002/chem.202201384] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2022] [Indexed: 12/22/2022]
Abstract
A series of rhodium and iridium complexes with a N-heterocyclic carbene (NHC) ligand decorated with a perylene-diimide-pyrene moiety are described. Electrochemical studies reveal that the complexes can undergo two successive one-electron reduction events, associated to the reduction of the PDI moiety attached to the NHC ligand. The reduction of the ligand produces a significant increase on its electron-donating character, as observed from the infrared spectroelectrochemical studies. The rhodium complex was tested in the [3+2] cycloaddition of diphenylcyclopropenone and methylphenylacetylene, where it displayed a redox-switchable behavior. The neutral complex showed moderate activity, which was suppressed when the catalyst was reduced.
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Affiliation(s)
- César Ruiz‐Zambrana
- Institute of Advanced Materials (INAM). Centro de Innovación en Química Avanzada (ORFEO-CINQA).Universitat Jaume I.Av. Vicente Sos Baynat s/n.Castellón.12071Spain
| | - Rajeev K. Dubey
- POLYMATUniversity of the Basque Country UPV/EHUAvenida de Tolosa 7220018Donostia-San SebastianSpain
| | - Macarena Poyatos
- Institute of Advanced Materials (INAM). Centro de Innovación en Química Avanzada (ORFEO-CINQA).Universitat Jaume I.Av. Vicente Sos Baynat s/n.Castellón.12071Spain
| | - Aurelio Mateo‐Alonso
- POLYMATUniversity of the Basque Country UPV/EHUAvenida de Tolosa 7220018Donostia-San SebastianSpain
- Ikerbasque, Basque Foundation for Science48009BilbaoSpain
| | - Eduardo Peris
- Institute of Advanced Materials (INAM). Centro de Innovación en Química Avanzada (ORFEO-CINQA).Universitat Jaume I.Av. Vicente Sos Baynat s/n.Castellón.12071Spain
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4
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Ruiz-Zambrana C, Poyatos M, Peris E. A Redox-Switchable Gold(I) Complex for the Hydroamination of Acetylenes: A Convenient Way for Studying Ligand-Derived Electronic Effects. ACS Catal 2022. [DOI: 10.1021/acscatal.2c00613] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Affiliation(s)
- César Ruiz-Zambrana
- Institute of Advanced Materials (INAM), Centro de Innovación en Química Avanzada (ORFEO-CINQA), Universitat Jaume IRINGGOLD, Av. Vicente Sos Baynat s/n, Castellón E-12071, Spain
| | - Macarena Poyatos
- Institute of Advanced Materials (INAM), Centro de Innovación en Química Avanzada (ORFEO-CINQA), Universitat Jaume IRINGGOLD, Av. Vicente Sos Baynat s/n, Castellón E-12071, Spain
| | - Eduardo Peris
- Institute of Advanced Materials (INAM), Centro de Innovación en Química Avanzada (ORFEO-CINQA), Universitat Jaume IRINGGOLD, Av. Vicente Sos Baynat s/n, Castellón E-12071, Spain
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5
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Ruiz‐Zambrana C, Gutiérrez‐Blanco A, Gonell S, Poyatos M, Peris E. Redox‐Switchable Cycloisomerization of Alkynoic Acids with Napthalenediimide‐Derived N‐Heterocyclic Carbene Complexes. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202107973] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Affiliation(s)
- César Ruiz‐Zambrana
- Institute of Advanced Materials (INAM). Universitat Jaume I. Av. Vicente Sos Baynat s/n. 12071 Castellón Spain
| | - Ana Gutiérrez‐Blanco
- Institute of Advanced Materials (INAM). Universitat Jaume I. Av. Vicente Sos Baynat s/n. 12071 Castellón Spain
| | - Sergio Gonell
- Institute of Advanced Materials (INAM). Universitat Jaume I. Av. Vicente Sos Baynat s/n. 12071 Castellón Spain
| | - Macarena Poyatos
- Institute of Advanced Materials (INAM). Universitat Jaume I. Av. Vicente Sos Baynat s/n. 12071 Castellón Spain
| | - Eduardo Peris
- Institute of Advanced Materials (INAM). Universitat Jaume I. Av. Vicente Sos Baynat s/n. 12071 Castellón Spain
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6
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Ruiz‐Zambrana C, Gutiérrez‐Blanco A, Gonell S, Poyatos M, Peris E. Redox-Switchable Cycloisomerization of Alkynoic Acids with Napthalenediimide-Derived N-Heterocyclic Carbene Complexes. Angew Chem Int Ed Engl 2021; 60:20003-20011. [PMID: 34255909 PMCID: PMC8457061 DOI: 10.1002/anie.202107973] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2021] [Indexed: 12/22/2022]
Abstract
Two naphthalene-diimide (NDI) bis-imidazolium salts have been used as N-heterocyclic carbene (NHC) precursors for the preparation of NDI-functionalized complexes of rhodium and iridium of general formula [MCl(NDI-NHC)(COD)] (M=Rh, Ir; NDI-NHC=NDI-functionalized NHC ligand). Comparison of the IR spectra of the complexes [IrCl(NDI-NHC)(CO)2 ] and their related one- and two-electron reduced forms, reveal that each one-electron reduction produces a decrease of the average ν(CO) of 9-10 cm-1 , indicating a significant enhancement of the electron-richness of the metal. The [MCl(NDI-NHC)(COD)] complexes were tested in the catalytic cycloisomerization of alkynoic acids. The one-electron reduced forms showed greatly enhanced activities. For the cyclization of 5-hexynoic acid, the two-electron reduction of the ligand produced further enhancement of the catalytic activity, therefore showing that the catalyst can switch between three redox species with three distinct catalytic activities.
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Affiliation(s)
- César Ruiz‐Zambrana
- Institute of Advanced Materials (INAM).Universitat Jaume I.Av. Vicente Sos Baynat s/n.12071CastellónSpain
| | - Ana Gutiérrez‐Blanco
- Institute of Advanced Materials (INAM).Universitat Jaume I.Av. Vicente Sos Baynat s/n.12071CastellónSpain
| | - Sergio Gonell
- Institute of Advanced Materials (INAM).Universitat Jaume I.Av. Vicente Sos Baynat s/n.12071CastellónSpain
| | - Macarena Poyatos
- Institute of Advanced Materials (INAM).Universitat Jaume I.Av. Vicente Sos Baynat s/n.12071CastellónSpain
| | - Eduardo Peris
- Institute of Advanced Materials (INAM).Universitat Jaume I.Av. Vicente Sos Baynat s/n.12071CastellónSpain
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7
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Abstract
In this contribution, we provide an overview of the main avenues that have emerged in gold coordination chemistry during the last years. The unique properties of gold have motivated research in gold chemistry, and especially regarding the properties and applications of gold compounds in catalysis, medicine, and materials chemistry. The advances in the synthesis and knowledge of gold coordination compounds have been possible with the design of novel ligands becoming relevant motifs that have allowed the preparation of elusive complexes in this area of research. Strong donor ligands with easily modulable electronic and steric properties, such as stable singlet carbenes or cyclometalated ligands, have been decisive in the stabilization of gold(0) species, gold fluoride complexes, gold hydrides, unprecedented π complexes, or cluster derivatives. These new ligands have been important not only from the fundamental structure and bonding studies but also for the synthesis of sophisticated catalysts to improve activity and selectivity of organic transformations. Moreover, they have enabled the facile oxidative addition from gold(I) to gold(III) and the design of a plethora of complexes with specific properties.
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Affiliation(s)
- Raquel P Herrera
- Laboratorio de Organocatálisis Asimétrica Departamento de Química Orgánica, Instituto de Síntesis Química y Catálisis Homogénea (ISQCH), CSIC-Universidad de Zaragoza, 50009 Zaragoza, Spain
| | - M Concepción Gimeno
- Departamento de Química Inorgánica, Instituto de Síntesis Química y Catálisis Homogénea (ISQCH), CSIC-Universidad de Zaragoza, 50009 Zaragoza, Spain
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8
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Chen C, Liu FS, Szostak M. BIAN-NHC Ligands in Transition-Metal-Catalysis: A Perfect Union of Sterically Encumbered, Electronically Tunable N-Heterocyclic Carbenes? Chemistry 2021; 27:4478-4499. [PMID: 32989914 PMCID: PMC7940599 DOI: 10.1002/chem.202003923] [Citation(s) in RCA: 46] [Impact Index Per Article: 15.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2020] [Revised: 09/24/2020] [Indexed: 12/12/2022]
Abstract
The discovery of NHCs (NHC = N-heterocyclic carbenes) as ancillary ligands in transition-metal-catalysis ranks as one of the most important developments in synthesis and catalysis. It is now well-recognized that the strong σ-donating properties of NHCs along with the ease of scaffold modification and a steric shielding of the N-wingtip substituents around the metal center enable dramatic improvements in catalytic processes, including the discovery of reactions that are not possible using other ancillary ligands. In this context, although the classical NHCs based on imidazolylidene and imidazolinylidene ring systems are now well-established, recently tremendous progress has been made in the development and catalytic applications of BIAN-NHC (BIAN = bis(imino)acenaphthene) class of ligands. The enhanced reactivity of BIAN-NHCs is a direct result of the combination of electronic and steric properties that collectively allow for a major expansion of the scope of catalytic processes that can be accomplished using NHCs. BIAN-NHC ligands take advantage of (1) the stronger σ-donation, (2) lower lying LUMO orbitals, (3) the presence of an extended π-system, (4) the rigid backbone that pushes the N-wingtip substituents closer to the metal center by buttressing effect, thus resulting in a significantly improved control of the catalytic center and enhanced air-stability of BIAN-NHC-metal complexes at low oxidation state. Acenaphthoquinone as a precursor enables facile scaffold modification, including for the first time the high yielding synthesis of unsymmetrical NHCs with unique catalytic properties. Overall, this results in a highly attractive, easily accessible class of ligands that bring major advances and emerge as a leading practical alternative to classical NHCs in various aspects of catalysis, cross-coupling and C-H activation endeavors.
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Affiliation(s)
- Changpeng Chen
- Department of Chemistry, Rutgers University, 73 Warren Street, Newark, NJ, 07102, USA
| | - Feng-Shou Liu
- Department of Chemistry, Rutgers University, 73 Warren Street, Newark, NJ, 07102, USA
- School of Chemistry and Chemical Engineering, Guangdong Pharmaceutical University, Zhongshan, Guangdong, 528458, China
| | - Michal Szostak
- Department of Chemistry, Rutgers University, 73 Warren Street, Newark, NJ, 07102, USA
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9
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10
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Appel S, Brüggemann P, Ganter C. A tropylium annulated N-heterocyclic carbene. Chem Commun (Camb) 2020; 56:9020-9023. [PMID: 32639486 DOI: 10.1039/d0cc04482b] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Derivatives of the cationic tropylium annulated imidazolylidene ITrop+ are obtained by hydride abstraction from related cycloheptatriene compounds. Spectroscopic, structural and theoretical data indicate that, as a cationic relative of benzimidazolylidenes, ITrop+ has highly reduced σ-donor and strong π-acceptor character.
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Affiliation(s)
- Sebastian Appel
- Institut für Anorganische Chemie, Heinrich-Heine-Universität Düsseldorf, 40225 Düsseldorf, Germany.
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11
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Jawiczuk M, Marczyk A, Młodzikowska-Pieńko K, Trzaskowski B. Impact of the Carbene Derivative Charge on the Decomposition Rates of Hoveyda-Grubbs-like Metathesis Catalysts. J Phys Chem A 2020; 124:6158-6167. [PMID: 32639748 PMCID: PMC7460089 DOI: 10.1021/acs.jpca.0c03096] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Abstract
![]()
Hoveyda–Grubbs
metathesis catalysts undergo a relatively
fast decomposition in the presence of olefins. Using a computational
density functional theory approach, we show that positively charged
derivatives of N-heterocyclic carbenes have little impact on the degradation/deactivation
rates of such catalysts with respect to neutral carbenes. On the other
hand, the hypothetical anionic Hoveyda–Grubbs-like catalysts
are predicted to less likely undergo degradation in the presence of
the olefin, while being as active as standard, neutral Hoveyda–Grubbs
catalysts.
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Affiliation(s)
- Magdalena Jawiczuk
- Centre of New Technologies, University of Warsaw, Banacha 2c, 02-097 Warszawa, Poland
| | - Anna Marczyk
- Centre of New Technologies, University of Warsaw, Banacha 2c, 02-097 Warszawa, Poland.,Faculty of Chemistry, University of Warsaw, Pasteura 1, 02-093 Warszawa, Poland
| | - Katarzyna Młodzikowska-Pieńko
- Centre of New Technologies, University of Warsaw, Banacha 2c, 02-097 Warszawa, Poland.,Faculty of Chemistry, University of Warsaw, Pasteura 1, 02-093 Warszawa, Poland
| | - Bartosz Trzaskowski
- Centre of New Technologies, University of Warsaw, Banacha 2c, 02-097 Warszawa, Poland
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12
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Ibáñez S, Poyatos M, Peris E. N-Heterocyclic Carbenes: A Door Open to Supramolecular Organometallic Chemistry. Acc Chem Res 2020; 53:1401-1413. [PMID: 32644769 DOI: 10.1021/acs.accounts.0c00312] [Citation(s) in RCA: 90] [Impact Index Per Article: 22.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
The field of metallosupramolecular chemistry is clearly dominated by the use of O-, N-, and P-donor Werner-type polydentate ligands. These molecular architectures are of high interest because of their wide range of applications, which include molecular encapsulation, stabilization of reactive species, supramolecular catalysis, and drug delivery, among others. Only recently, organometallic ligands have allowed the preparation of a variety of supramolecular coordination complexes, and the term supramolecular organometallic complexes (SOCs) is gaining space within the field of metallosupramolecular chemistry. While the early examples of SOCs referred to supramolecular architectures mostly containing bisalkenyl, diphenyl, or bisalkynyl linkers, the development of SOCs during the past decade has been boosted by the parallel development of multidentate N-heterocyclic carbene (NHC) ligands. The first examples of NHC-based SOCs referred to supramolecular assemblies based on polydentate NHC ligands bound to group 11 metals. However, during the last 10 years, several planar poly-NHC ligands containing extended π-conjugated systems have facilitated the formation of a large variety of architectures in which the supramolecular assemblies can contain metals other than Cu, Ag, and Au. Such ligands are Janus di-NHCs and trigonal-planar tris-NHCs-most of them prepared by our research group-which have allowed the preparation of a vast range of NHC-based metallosupramolecular compounds with interesting host-guest chemistry properties. Although the number of SOCs has increased in the past few years, their use for host-guest chemistry purposes is still in its earliest infancy. In this Account, we describe the achievements that we have made during the last 4 years toward broadening the applications of planar extended π-conjugated NHC ligands for the preparation of organometallic-based supramolecular structures, including their use as hosts for some selected organic and inorganic guests, together with the catalytic properties displayed by some selected host-guest inclusion complexes. Our contribution describes the design of several Ni-, Pd-, and Au-based metallorectangles and metalloprisms, which we used for the encapsulation of several organic substrates, such as polycyclic aromatic hydrocarbons (PAHs) and fullerenes. The large binding affinities found are ascribed to the incorporation of two cofacial panels with large π-conjugated systems, which provide the optimum conditions for guest recognition by π-π-stacking interactions. We also describe a series of digold(I) metallotweezers for the recognition of organic and inorganic substrates. These metallotweezers were used for the recognition of "naked" metal cations and polycyclic aromatic hydrocarbons. The recognition properties of these metallotweezers are highly dependent on the nature of the rigid connector and of the ancillary ligands that constitute the arms of the tweezer. A peculiar balance between the self-aggregation properties of the tweezer and its ability to encapsulate organic guests is observed.
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Affiliation(s)
- Susana Ibáñez
- Institute of Advanced Materials (INAM), Centro de Innovación en Química Avanzada (ORFEO−CINQA), Universitat Jaume I, Av. Vicente Sos Baynat s/n, E-12071 Castellón, Spain
| | - Macarena Poyatos
- Institute of Advanced Materials (INAM), Centro de Innovación en Química Avanzada (ORFEO−CINQA), Universitat Jaume I, Av. Vicente Sos Baynat s/n, E-12071 Castellón, Spain
| | - Eduardo Peris
- Institute of Advanced Materials (INAM), Centro de Innovación en Química Avanzada (ORFEO−CINQA), Universitat Jaume I, Av. Vicente Sos Baynat s/n, E-12071 Castellón, Spain
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13
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Preparation and self-aggregation properties of a series of pyrene-imidazolylidene complexes of gold (I). J Organomet Chem 2020. [DOI: 10.1016/j.jorganchem.2020.121284] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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14
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Evans KJ, Mansell SM. Functionalised N-Heterocyclic Carbene Ligands in Bimetallic Architectures. Chemistry 2020; 26:5927-5941. [PMID: 31981386 PMCID: PMC7317719 DOI: 10.1002/chem.201905510] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2019] [Indexed: 12/18/2022]
Abstract
N-Heterocyclic carbenes (NHCs) have become immensely successful ligands in coordination chemistry and homogeneous catalysis due to their strong terminal σ-donor properties. However, by targeting NHC ligands with additional functionalisation, a new area of NHC coordination chemistry has developed that has enabled NHCs to be used to build up bimetallic and multimetallic architectures. This minireview covers the development of functionalised NHC ligands that incorporate additional donor sites in order to coordinate two or more metal atoms. This can be through the N-atom of the NHC ring, through a donor group attached to the N-atom or the carbon backbone, coordination of the π-bond or an annulated π-donor on the backbone, or through direct metalation of the backbone.
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Affiliation(s)
- Kieren J. Evans
- Institute of Chemical SciencesHeriot-Watt UniversityEdinburghEH14 4ASUK
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15
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Ruiz-Botella S, Vidossich P, Ujaque G, Peris E. A resorcinarene-based tetrabenzoimidazolylidene complex of rhodium. Dalton Trans 2020; 49:3181-3186. [PMID: 32091521 DOI: 10.1039/d0dt00060d] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A tetrabenzoimidazolium-resorcinarene cavitand was used for the preparation of a tetra-benzoimidazolylidene of rhodium, which is unprecedented in the field of poly-NHC metal complexes. Both the experimental and computational analyses of the molecule reveal a distorted vase conformation as the most stable one, although several non-interconverting conformational isomers due to the restricted rotation about the Rh-C(carbene) bond coexist in the product. There is a fluxional behaviour involving the vase-kite interconversion. The main interactions between the arms of the cavitand are mostly concentrated on the terminal organometallic fragments attached to NHC, along with those between -CH3 and a N-heterocyclic carbene ring from benzoimidazoles.
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Affiliation(s)
- Sheila Ruiz-Botella
- Institute of Advanced Materials (INAM), Centro de Innovación en Química Avanzada (ORFEO-CINQA), Universitat Jaume I, Av. Vicente Sos Baynat s/n, Castellón, E-12071, Spain.
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16
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Gonell S, Peris E, Poyatos M. Structural Features of Mono- and Dimetallic Complexes of Palladium Combining Two Types of Aromatic NHC Ligands. Eur J Inorg Chem 2019. [DOI: 10.1002/ejic.201900684] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Sergio Gonell
- Institute of Chemical Research of Catalonia (ICIQ); The Barcelona Institute of Science and Technology; Avinguda Països Catalans 16 43007 Tarragona Spain
| | - Eduardo Peris
- Institute of Advanced Materials (INAM); Universitat Jaume I; Av. Vicente Sos Baynat s/n 12071 Castellón Spain
| | - Macarena Poyatos
- Institute of Advanced Materials (INAM); Universitat Jaume I; Av. Vicente Sos Baynat s/n 12071 Castellón Spain
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17
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Tabasi Z, Younes EA, Walsh JC, Thompson DW, Bodwell GJ, Zhao Y. Pyrenoimidazolyl-Benzaldehyde Fluorophores: Synthesis, Properties, and Sensing Function for Fluoride Anions. ACS OMEGA 2018; 3:16387-16397. [PMID: 31458274 PMCID: PMC6644017 DOI: 10.1021/acsomega.8b02482] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/22/2018] [Accepted: 11/19/2018] [Indexed: 06/01/2023]
Abstract
Two structural isomers of (9H-pyreno[4,5-d]imidazol-10-yl)-benzaldehyde, with para and meta substitution patterns, were synthesized by condensation of 4,5-pyrenedione with terephthalaldehyde and isophthalaldehyde, respectively. These new pyrenoimidazole derivatives were characterized by single-crystal X-ray crystallography, UV-vis absorption spectroscopy, fluorescence spectroscopy, and cyclic voltammetry to elucidate their structural, solid-state packing, and electronic properties. Interactions of these compounds with fluoride anions in polar organic solvents (acetone and dimethyl sulfoxide) were investigated by NMR, UV-vis, and fluorescence techniques in conjunction with density functional theory calculations. UV-vis analysis showed that the binding of the two pyrenoimidazolyl benzaldehydes with fluoride anions resulted in significant colorimetric responses, while fluorescence studies showed that the para-pyrenoimidazolyl benzaldehyde behaved as an intramolecular charge transfer fluorescent probe, exhibiting ratiometric sensing performance to efficiently detect and quantify fluoride anions at the sub-millimolar level.
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Affiliation(s)
- Zahra
A. Tabasi
- Department
of Chemistry, Memorial University of Newfoundland, St. John’s, Newfoundland
and Labrador A1B 3X7, Canada
| | - Eyad A. Younes
- Department
of Chemistry, Memorial University of Newfoundland, St. John’s, Newfoundland
and Labrador A1B 3X7, Canada
- Department
of Chemistry, The Hashemite University, P.O. Box 150459, Zarqa 13115, Jordan
| | - Joshua C. Walsh
- Department
of Chemistry, Memorial University of Newfoundland, St. John’s, Newfoundland
and Labrador A1B 3X7, Canada
| | - David W. Thompson
- Department
of Chemistry, Memorial University of Newfoundland, St. John’s, Newfoundland
and Labrador A1B 3X7, Canada
| | - Graham J. Bodwell
- Department
of Chemistry, Memorial University of Newfoundland, St. John’s, Newfoundland
and Labrador A1B 3X7, Canada
| | - Yuming Zhao
- Department
of Chemistry, Memorial University of Newfoundland, St. John’s, Newfoundland
and Labrador A1B 3X7, Canada
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Martínez-Agramunt V, Gusev DG, Peris E. A Shape-Adaptable Organometallic Supramolecular Coordination Cage for the Encapsulation of Fullerenes. Chemistry 2018; 24:14802-14807. [DOI: 10.1002/chem.201803034] [Citation(s) in RCA: 41] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2018] [Indexed: 12/14/2022]
Affiliation(s)
- Víctor Martínez-Agramunt
- Institute of Advanced Materials (INAM), Centro de Innovación en Química Avanzada (ORFEO-CINQA); Universitat Jaume I; Av. Vicente Sos Baynat s/n. Castellón 12071 Spain
| | - Dmitry G. Gusev
- Dept. of Chemistry and Biochemistry; Wilfrid Laurier University; Waterloo Ontario N2L 3C5 Canada
| | - Eduardo Peris
- Institute of Advanced Materials (INAM), Centro de Innovación en Química Avanzada (ORFEO-CINQA); Universitat Jaume I; Av. Vicente Sos Baynat s/n. Castellón 12071 Spain
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21
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Huynh HV. Electronic Properties of N-Heterocyclic Carbenes and Their Experimental Determination. Chem Rev 2018; 118:9457-9492. [DOI: 10.1021/acs.chemrev.8b00067] [Citation(s) in RCA: 446] [Impact Index Per Article: 74.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Affiliation(s)
- Han Vinh Huynh
- Department of Chemistry, Faculty of Science, National University of Singapore, 3 Science Drive 3, Singapore 117543, Republic of Singapore
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22
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Vanicek S, Podewitz M, Stubbe J, Schulze D, Kopacka H, Wurst K, Müller T, Lippmann P, Haslinger S, Schottenberger H, Liedl KR, Ott I, Sarkar B, Bildstein B. Highly Electrophilic, Catalytically Active and Redox-Responsive Cobaltoceniumyl and Ferrocenyl Triazolylidene Coinage Metal Complexes. Chemistry 2018; 24:3742-3753. [PMID: 29214677 PMCID: PMC6100101 DOI: 10.1002/chem.201705051] [Citation(s) in RCA: 55] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2017] [Indexed: 01/16/2023]
Abstract
A convenient access to a triad of triazoles with ferrocenyl and cobaltoceniumyl substituents is reported. N-Alkylation, deprotonation and metalation with CuI /AgI /AuI synthons affords the heteroleptic triazolylidene complexes. Due to the combination of neutral, electron-donating ferrocenyl substituents and cationic, strongly electron-withdrawing cobaltocenium substituents, the mesoionic carbene (MIC) ligands of these complexes are electronically interesting "push-pull", "pull-push" and "pull-pull" metalloligands with further switchable redox states based on their fully reversible FeII /FeIII , (ferrocene/ferrocenium) and CoIII /CoII , (cobaltocenium/cobaltocene) redox couples. These are the first examples of metal complexes of (di)cationic NHC ligands based on cobaltoceniumyl substituents. DFT calculated Tolman electronic parameter (TEP) of the new MIC ligands, show these metalloligands to be extremely electron-poor NHCs with properties unmatched in other carbene chemistry. Utilization of these multimetallic electronically tunable compounds in catalytic oxazoline synthesis and in antitumor studies are presented. Remarkably, 1 mol % of the AuI complex with the dicationic MIC ligand displays full catalytic conversion, without the need for any other additives, in less than 2 hours at ambient temperatures. These results thus firmly establish these new classes of cobaltoceniumyl based (di)cationic MIC ligands as prominent players in several branches of chemistry.
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Affiliation(s)
- Stefan Vanicek
- Institute of General, Inorganic and Theoretical ChemistryUniversity of Innsbruck, Center for Chemistry and BiomedicineInnrain 80–826020InnsbruckAustria
| | - Maren Podewitz
- Institute of General, Inorganic and Theoretical ChemistryUniversity of Innsbruck, Center for Chemistry and BiomedicineInnrain 80–826020InnsbruckAustria
| | - Jessica Stubbe
- Institute of Chemistry and Biochemistry, Inorganic ChemistryFreie Universität BerlinFabeckstraße 34–3614195BerlinGermany
| | - Dennis Schulze
- Institute of Chemistry and Biochemistry, Inorganic ChemistryFreie Universität BerlinFabeckstraße 34–3614195BerlinGermany
| | - Holger Kopacka
- Institute of General, Inorganic and Theoretical ChemistryUniversity of Innsbruck, Center for Chemistry and BiomedicineInnrain 80–826020InnsbruckAustria
| | - Klaus Wurst
- Institute of General, Inorganic and Theoretical ChemistryUniversity of Innsbruck, Center for Chemistry and BiomedicineInnrain 80–826020InnsbruckAustria
| | - Thomas Müller
- Institute of Organic ChemistryUniversity of Innsbruck, Center for Chemistry and BiomedicineInnrain 80–826020InnsbruckAustria
| | - Petra Lippmann
- Institute of Medicinal and Pharmaceutical ChemistryTechnische Universität BraunschweigBeethovenstr. 5538106BraunschweigGermany
| | - Simone Haslinger
- Institute of General, Inorganic and Theoretical ChemistryUniversity of Innsbruck, Center for Chemistry and BiomedicineInnrain 80–826020InnsbruckAustria
| | - Herwig Schottenberger
- Institute of General, Inorganic and Theoretical ChemistryUniversity of Innsbruck, Center for Chemistry and BiomedicineInnrain 80–826020InnsbruckAustria
| | - Klaus R. Liedl
- Institute of General, Inorganic and Theoretical ChemistryUniversity of Innsbruck, Center for Chemistry and BiomedicineInnrain 80–826020InnsbruckAustria
| | - Ingo Ott
- Institute of Medicinal and Pharmaceutical ChemistryTechnische Universität BraunschweigBeethovenstr. 5538106BraunschweigGermany
| | - Biprajit Sarkar
- Institute of Chemistry and Biochemistry, Inorganic ChemistryFreie Universität BerlinFabeckstraße 34–3614195BerlinGermany
| | - Benno Bildstein
- Institute of General, Inorganic and Theoretical ChemistryUniversity of Innsbruck, Center for Chemistry and BiomedicineInnrain 80–826020InnsbruckAustria
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Ibáñez S, Poyatos M, Peris E. Gold Catalysts with Polyaromatic-NHC ligands. Enhancement of Activity by Addition of Pyrene. Organometallics 2017. [DOI: 10.1021/acs.organomet.7b00172] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Affiliation(s)
- Susana Ibáñez
- Institute of Advanced Materials
(INAM), Universitat Jaume I, Avda. Vicente Sos Baynat s/n, Castellón E-12071, Spain
| | - Macarena Poyatos
- Institute of Advanced Materials
(INAM), Universitat Jaume I, Avda. Vicente Sos Baynat s/n, Castellón E-12071, Spain
| | - Eduardo Peris
- Institute of Advanced Materials
(INAM), Universitat Jaume I, Avda. Vicente Sos Baynat s/n, Castellón E-12071, Spain
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Affiliation(s)
- Mirko Ruamps
- LCC-CNRS, Université de Toulouse, INPT, UPS, 205 route de Narbonne, 31077 Toulouse cedex 4, France
| | - Noël Lugan
- LCC-CNRS, Université de Toulouse, INPT, UPS, 205 route de Narbonne, 31077 Toulouse cedex 4, France
| | - Vincent César
- LCC-CNRS, Université de Toulouse, INPT, UPS, 205 route de Narbonne, 31077 Toulouse cedex 4, France
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Abstract
It is well-recognized that N-heterocyclic carbene (NHC) ligands have provided a new dimension to the design of homogeneous catalysts. Part of the success of this type of ligands resides in the limitless access to a variety of topologies with tuned electronic properties, but also in the ability of a family of NHCs that are able to adapt their properties to the specific requirements of individual catalytic transformations. The term "smart" is used here to refer to switchable, multifunctional, adaptable, or tunable ligands and, in general, to all those ligands that are able to modify their steric or electronic properties to fulfill the requirements of a defined catalytic reaction. The purpose of this review is to comprehensively describe all types of smart NHC ligands by focusing attention on the catalytically relevant ligand-based reactivity.
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Affiliation(s)
- Eduardo Peris
- Institute of Advanced Materials , Universitat Jaume I , Avenida Vicente Sos Baynat s/n , Castellón E-12071 , Spain
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27
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Ibáñez S, Poyatos M, Peris E. A D3h-symmetry hexaazatriphenylene-tris-N-heterocyclic carbene ligand and its coordination to iridium and gold: preliminary catalytic studies. Chem Commun (Camb) 2017; 53:3733-3736. [DOI: 10.1039/c7cc00525c] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A planar star-shaped tris-NHC ligand with a hexaazatriphenylene core was coordinated to gold and iridium. The tris–Au(i) complex shows enhanced catalytic activities due to the electron-deficient character of the HAT core.
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Affiliation(s)
- S. Ibáñez
- Institute of Advanced Materials (INAM)
- Universitat Jaume I
- Castellón 12071
- Spain
| | - M. Poyatos
- Institute of Advanced Materials (INAM)
- Universitat Jaume I
- Castellón 12071
- Spain
| | - E. Peris
- Institute of Advanced Materials (INAM)
- Universitat Jaume I
- Castellón 12071
- Spain
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Hettmanczyk L, Suntrup L, Klenk S, Hoyer C, Sarkar B. Heteromultimetallic Complexes with Redox-Active Mesoionic Carbenes: Control of Donor Properties and Redox-Induced Catalysis. Chemistry 2016; 23:576-585. [DOI: 10.1002/chem.201604615] [Citation(s) in RCA: 81] [Impact Index Per Article: 10.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2016] [Indexed: 01/28/2023]
Affiliation(s)
- Lara Hettmanczyk
- Institut für Chemie und Biochemie, Anorganische Chemie; Freie Universität Berlin; Fabeckstraße 34-36 14195 Berlin Germany
| | - Lisa Suntrup
- Institut für Chemie und Biochemie, Anorganische Chemie; Freie Universität Berlin; Fabeckstraße 34-36 14195 Berlin Germany
| | - Sinja Klenk
- Institut für Chemie und Biochemie, Anorganische Chemie; Freie Universität Berlin; Fabeckstraße 34-36 14195 Berlin Germany
| | - Carolin Hoyer
- Institut für Chemie und Biochemie, Anorganische Chemie; Freie Universität Berlin; Fabeckstraße 34-36 14195 Berlin Germany
| | - Biprajit Sarkar
- Institut für Chemie und Biochemie, Anorganische Chemie; Freie Universität Berlin; Fabeckstraße 34-36 14195 Berlin Germany
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29
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Liberman-Martin AL, Ziegler MS, DiPasquale AG, Bergman RG, Tilley TD. Functionalization of an iridium–diamidocarbene complex by ligand-based reactions with titanocene and zirconocene sources. Polyhedron 2016. [DOI: 10.1016/j.poly.2016.03.044] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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Feng X, Hu JY, Redshaw C, Yamato T. Functionalization of Pyrene To Prepare Luminescent Materials-Typical Examples of Synthetic Methodology. Chemistry 2016; 22:11898-916. [PMID: 27388023 DOI: 10.1002/chem.201600465] [Citation(s) in RCA: 134] [Impact Index Per Article: 16.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2016] [Indexed: 01/04/2023]
Abstract
Pyrene-based π-conjugated materials are considered to be an ideal organic electro-luminescence material for application in semiconductor devices, such as organic light-emitting diodes (OLEDs), organic field-effect transistors (OFETs) and organic photovoltaics (OPVs), and so forth. However, the great drawback of employing pyrene as an organic luminescence material is the formation of excimer emission, which quenches the efficiency at high concentration or in the solid-state. Thus, in order to obtain highly efficient optical devices, scientists have devoted much effort to tuning the structure of pyrene derivatives in order to realize exploitable properties by employing two strategies, 1) introducing a variety of moieties at the pyrene core, and 2) exploring effective and convenient synthetic strategies to functionalize the pyrene core. Over the past decades, our group has mainly focused on synthetic methodologies for functionalization of the pyrene core; we have found that formylation/acetylation or bromination of pyrene can selectly lead to functionalization at K-region by Lewis acid catalysis. Herein, this Minireview highlights the direct synthetic approaches (such as formylation, bromination, oxidation, and de-tert-butylation reactions, etc.) to functionalize the pyrene in order to advance research on luminescent materials for organic electronic applications. Further, this article demonstrates that the future direction of pyrene chemistry is asymmetric functionalization of pyrene for organic semiconductor applications and highlights some of the classical asymmetric pyrenes, as well as the latest breakthroughs. In addition, the photophysical properties of pyrene-based molecules are briefly reviewed. To give a current overview of the development of pyrene chemistry, the review selectively covers some of the latest reports and concepts from the period covering late 2011 to the present day.
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Affiliation(s)
- Xing Feng
- School of Printing and Packing Engineering, Beijing Institute of Graphic Communication, 1 Xinghua Avenue (Band Two), Daxing, Beijing, 102600, P.R. China. .,Department of Applied Chemistry, Faculty of Science and Engineering, Saga University, Honjo-machi 1, Saga, 840-8502, Japan.
| | - Jian-Yong Hu
- School of Materials Science and Engineering, Shannxi Normal University, Xi'an, 710062, Shannxi, P.R. China
| | - Carl Redshaw
- Department of Chemistry, University of Hull, Cottingham Rd, Hull, HU6 7RX, UK
| | - Takehiko Yamato
- Department of Applied Chemistry, Faculty of Science and Engineering, Saga University, Honjo-machi 1, Saga, 840-8502, Japan.
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Stępień M, Gońka E, Żyła M, Sprutta N. Heterocyclic Nanographenes and Other Polycyclic Heteroaromatic Compounds: Synthetic Routes, Properties, and Applications. Chem Rev 2016; 117:3479-3716. [PMID: 27258218 DOI: 10.1021/acs.chemrev.6b00076] [Citation(s) in RCA: 868] [Impact Index Per Article: 108.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
Two-dimensionally extended, polycyclic heteroaromatic molecules (heterocyclic nanographenes) are a highly versatile class of organic materials, applicable as functional chromophores and organic semiconductors. In this Review, we discuss the rich chemistry of large heteroaromatics, focusing on their synthesis, electronic properties, and applications in materials science. This Review summarizes the historical development and current state of the art in this rapidly expanding field of research, which has become one of the key exploration areas of modern heterocyclic chemistry.
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Affiliation(s)
- Marcin Stępień
- Wydział Chemii, Uniwersytet Wrocławski , ul. F. Joliot-Curie 14, 50-383 Wrocław, Poland
| | - Elżbieta Gońka
- Wydział Chemii, Uniwersytet Wrocławski , ul. F. Joliot-Curie 14, 50-383 Wrocław, Poland
| | - Marika Żyła
- Wydział Chemii, Uniwersytet Wrocławski , ul. F. Joliot-Curie 14, 50-383 Wrocław, Poland
| | - Natasza Sprutta
- Wydział Chemii, Uniwersytet Wrocławski , ul. F. Joliot-Curie 14, 50-383 Wrocław, Poland
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32
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The chemistry of the carbon-transition metal double and triple bond: Annual survey covering the year 2014. Coord Chem Rev 2016. [DOI: 10.1016/j.ccr.2015.09.012] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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33
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Langbein S, Wadepohl H, Gade LH. Ditopic N-Heterocyclic Pincer Carbene Complexes Containing a Perylene Backbone. Organometallics 2016. [DOI: 10.1021/acs.organomet.6b00049] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Affiliation(s)
- Susanne Langbein
- Anorganisch-Chemisches
Institut, Universität Heidelberg, Im Neuenheimer Feld 270, 69120 Heidelberg, Germany
| | - Hubert Wadepohl
- Anorganisch-Chemisches
Institut, Universität Heidelberg, Im Neuenheimer Feld 270, 69120 Heidelberg, Germany
| | - Lutz H. Gade
- Anorganisch-Chemisches
Institut, Universität Heidelberg, Im Neuenheimer Feld 270, 69120 Heidelberg, Germany
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Ibañez S, Poyatos M, Peris E. Mono and dimetallic pyrene-imidazolylidene complexes of iridium(iii) for the deuteration of organic substrates and the C–C coupling of alcohols. Dalton Trans 2016; 45:14154-9. [DOI: 10.1039/c6dt02942f] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Two pyrene-NHC complexes of Ir(iii) and one di-iridium(iii) complex with a pyrene-di-NHC ligand have been prepared and characterized. Their catalytic activity in the deuteration of organic substrates, and in the β-alkylation of secondary alcohols with primary alcohols is described.
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Affiliation(s)
- S. Ibañez
- Institute of Advanced Materials (INAM)
- Universitat Jaume I
- 12071-Castellón
- Spain
| | - M. Poyatos
- Institute of Advanced Materials (INAM)
- Universitat Jaume I
- 12071-Castellón
- Spain
| | - E. Peris
- Institute of Advanced Materials (INAM)
- Universitat Jaume I
- 12071-Castellón
- Spain
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35
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Therrien JA, Wolf MO, Patrick BO. Polyannulated Bis(N-heterocyclic carbene)palladium Pincer Complexes for Electrocatalytic CO2 Reduction. Inorg Chem 2015; 54:11721-32. [PMID: 26624491 DOI: 10.1021/acs.inorgchem.5b01698] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Phenanthro- and pyreno-annulated N-heterocyclic carbenes (NHCs) have been incorporated into lutidine-linked bis-NHC Pd pincer complexes to investigate the effect of these polyannulated NHCs on the ability of the complexes to electrochemically reduce CO2 to CO in the presence of 2,2,2-trifluoroacetic acid and 2,2,2-trifluoroethanol as proton sources. These complexes are screened for their ability to reduce CO2 and modeled using density functional theory calculations, where the annulated phenanthrene and pyrene moieties are shown to be additional sites for redox activity in the pincer ligand, enabling increased electron donation. Electrochemical and computational studies are used to gain an understanding of the chemical significance of redox events for complexes of this type, highlighting the importance of anion binding and dissociation.
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Affiliation(s)
- Jeffrey A Therrien
- Department of Chemistry, University of British Columbia , Vancouver, British Columbia V6T 1Z1, Canada
| | - Michael O Wolf
- Department of Chemistry, University of British Columbia , Vancouver, British Columbia V6T 1Z1, Canada
| | - Brian O Patrick
- Department of Chemistry, University of British Columbia , Vancouver, British Columbia V6T 1Z1, Canada
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36
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Ibáñez S, Guerrero A, Poyatos M, Peris E. Fluorescent Pyrene-Based Bis-azole Compounds: Synthesis and Photophysical Analysis. Chemistry 2015; 21:10566-75. [DOI: 10.1002/chem.201501179] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2015] [Indexed: 02/03/2023]
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Valdés H, Poyatos M, Peris E. Postmodification of the Electronic Properties by Addition of π-Stacking Additives in N-Heterocyclic Carbene Complexes with Extended Polyaromatic Systems. Inorg Chem 2015; 54:3654-9. [DOI: 10.1021/acs.inorgchem.5b00250] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Affiliation(s)
- Hugo Valdés
- Departamento de Química Inorgánica y Orgánica, Universitat Jaume I, Avenida Vicente Sos Baynat s/n, 12071 Castellón, Spain
| | - Macarena Poyatos
- Departamento de Química Inorgánica y Orgánica, Universitat Jaume I, Avenida Vicente Sos Baynat s/n, 12071 Castellón, Spain
| | - Eduardo Peris
- Departamento de Química Inorgánica y Orgánica, Universitat Jaume I, Avenida Vicente Sos Baynat s/n, 12071 Castellón, Spain
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38
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Riener K, Bitzer MJ, Pöthig A, Raba A, Cokoja M, Herrmann WA, Kühn FE. On the Concept of Hemilability: Insights into a Donor-Functionalized Iridium(I) NHC Motif and Its Impact on Reactivity. Inorg Chem 2014; 53:12767-77. [DOI: 10.1021/ic5016324] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Affiliation(s)
- Korbinian Riener
- Chair of Inorganic Chemistry/Molecular Catalysis, Catalysis Research
Center, Technische Universität München, Ernst-Otto-Fischer-Straße 1, 85747 Garching bei München, Germany
| | - Mario J. Bitzer
- Chair of Inorganic Chemistry/Molecular Catalysis, Catalysis Research
Center, Technische Universität München, Ernst-Otto-Fischer-Straße 1, 85747 Garching bei München, Germany
| | - Alexander Pöthig
- Chair of Inorganic Chemistry/Molecular Catalysis, Catalysis Research
Center, Technische Universität München, Ernst-Otto-Fischer-Straße 1, 85747 Garching bei München, Germany
| | - Andreas Raba
- Chair of Inorganic Chemistry/Molecular Catalysis, Catalysis Research
Center, Technische Universität München, Ernst-Otto-Fischer-Straße 1, 85747 Garching bei München, Germany
| | - Mirza Cokoja
- Chair of Inorganic Chemistry/Molecular Catalysis, Catalysis Research
Center, Technische Universität München, Ernst-Otto-Fischer-Straße 1, 85747 Garching bei München, Germany
| | - Wolfgang A. Herrmann
- Chair of Inorganic Chemistry/Molecular Catalysis, Catalysis Research
Center, Technische Universität München, Ernst-Otto-Fischer-Straße 1, 85747 Garching bei München, Germany
| | - Fritz E. Kühn
- Chair of Inorganic Chemistry/Molecular Catalysis, Catalysis Research
Center, Technische Universität München, Ernst-Otto-Fischer-Straße 1, 85747 Garching bei München, Germany
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39
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Valdés H, Poyatos M, Ujaque G, Peris E. Experimental and theoretical approaches to the influence of the addition of pyrene to a series of Pd and Ni NHC-based complexes: catalytic consequences. Chemistry 2014; 21:1578-88. [PMID: 25413787 DOI: 10.1002/chem.201404618] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2014] [Indexed: 11/12/2022]
Abstract
A series of Ni and Pd complexes with three different N-heterocyclic carbene (NHC)-based ligands (imidazolylidene, benzimidazolylidene and pyrene-imidazolylidene) has been prepared and fully characterized. The influence of the addition of pyrene to solutions containing these complexes is studied by means of NMR and UV/Vis spectroscopies and by cyclic voltammetry. The addition of pyrene to the pyrene-NHC-containing Pd and Ni complexes gives rise to the formation of adducts by π-π stacking interactions between pyrene and the pyrene group of the NHC ligand. This interaction causes a modification of the electronic properties of the metal, as demonstrated by cyclic voltammetric studies of the Ni-NHC complexes. Theoretical calculations support this type of π-interactions, and justify the higher interactions observed with the pyrene-NHC containing complexes. The catalytic activities of the complexes were tested in the Suzuki-Miyaura C-C coupling and in the α-arylation of ketones. The addition of pyrene as an external π-stacking additive does not affect the activities of the complexes in the Suzuki-Miyaura coupling, but this observation may be justified due to the fact that the process is heterogeneously catalyzed, as indicated by the mercury-drop test. The addition of pyrene to the catalytic α-arylation of ketones results in a decrease in the activity of the reactions catalyzed by the pyrene-imidazolylidene palladium complex, whereas the other two catalysts do not modify their activity in the presence of this π-stacking additive.
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Affiliation(s)
- Hugo Valdés
- Dpto. de Química Inorgánica y Orgánica, Universitat Jaume I, Avda. Sos Baynat, 12071 Castellón (Spain)
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40
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Cyclopentadienyl ruthenium complexes with naphthalene and other polycyclic aromatic ligands. Coord Chem Rev 2014. [DOI: 10.1016/j.ccr.2014.06.017] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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41
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Fu C, Harms K, Zhang L, Meggers E. DNA Mismatch Recognition by a Hexacoordinate Silicon Sandwich–Ruthenium Hybrid Complex. Organometallics 2014. [DOI: 10.1021/om500367a] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Affiliation(s)
- Chen Fu
- Fachbereich Chemie, Philipps-Universität Marburg, Hans-Meerwein-Strasse, 35043 Marburg, Germany
| | - Klaus Harms
- Fachbereich Chemie, Philipps-Universität Marburg, Hans-Meerwein-Strasse, 35043 Marburg, Germany
| | - Lilu Zhang
- Fachbereich Chemie, Philipps-Universität Marburg, Hans-Meerwein-Strasse, 35043 Marburg, Germany
| | - Eric Meggers
- Fachbereich Chemie, Philipps-Universität Marburg, Hans-Meerwein-Strasse, 35043 Marburg, Germany
- College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, People’s Republic of China
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42
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Gonell S, Poyatos M, Peris E. Pyrene-Based Bisazolium Salts: From Luminescence Properties to Janus-Type Bis-N-Heterocyclic Carbenes. Chemistry 2014; 20:9716-24. [DOI: 10.1002/chem.201304952] [Citation(s) in RCA: 56] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2014] [Indexed: 11/06/2022]
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