1
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Arai N, Shibuya Y, Koguchi S, Yamamoto T. Halogen‐Substituted Mesoionic‐Carbene/Palladium Complexes for Catalytic Arylation of Aldehydes. ASIAN J ORG CHEM 2023. [DOI: 10.1002/ajoc.202300076] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/07/2023]
Affiliation(s)
- Naoki Arai
- Department of Materials Science and Engineering Graduate School of Engineering Tokyo Denki University 5 Senju-Asahi-cho, Adachi-ku Tokyo 120-8551 Japan
| | - Yuga Shibuya
- Graduate School of Science Tokai University 4-1-1 Kitakaname, Hiratsuka-shi Kanagawa 259-1292 Japan
| | - Shinichi Koguchi
- Department of Chemistry Tokai University 4-1-1 Kitakaname, Hiratsuka-shi Kanagawa 259-1292 Japan
| | - Tetsuya Yamamoto
- Department of Materials Science and Engineering Graduate School of Engineering Tokyo Denki University 5 Senju-Asahi-cho, Adachi-ku Tokyo 120-8551 Japan
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2
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Barnett C, Cole ML, Harper JB. The Core Difference between a Mesoionic and a Normal N-Heterocyclic Carbene. ACS OMEGA 2022; 7:34657-34664. [PMID: 36188285 PMCID: PMC9520694 DOI: 10.1021/acsomega.2c04682] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/25/2022] [Accepted: 08/23/2022] [Indexed: 06/16/2023]
Abstract
The properties of the abnormal N-heterocyclic carbene (NHC) 1,4-dimesityl-3-methyl-1,2,3-triazolin-5-ylidene were comprehensively compared to those of the related normal carbene 1,3-dimesitylimidazolin-2-ylidene using a range of steric and electronic probe techniques (% V bur, steric maps, Tolman electronic parameter, alane, Huynh electronic parameter, selone, and pK a values). The two NHCs were determined to be sterically equivalent (isostructural), while the triazolin-5-ylidene was found to be a stronger σ-electron donor and a much weaker π-electron acceptor. These results were used to demonstrate that the electronic properties of these NHCs could affect the stereochemical outcome of an NHC-catalyzed reaction.
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Affiliation(s)
- Christopher Barnett
- School
of Chemistry, The University of New South
Wales, Sydney 2052, Australia
- School
of Chemistry, The University of Sydney, Sydney 2006, Australia
| | - Marcus L. Cole
- School
of Chemistry, The University of New South
Wales, Sydney 2052, Australia
| | - Jason B. Harper
- School
of Chemistry, The University of New South
Wales, Sydney 2052, Australia
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3
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Iizumi K, Nakayama KP, Kato K, Muto K, Yamaguchi J. Synthesis and Properties of Pyridine-Fused Triazolylidene-Palladium: Catalyst for Cross-Coupling Using Chloroarenes and Nitroarenes. J Org Chem 2022; 87:11909-11918. [PMID: 36001867 DOI: 10.1021/acs.joc.2c01562] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The synthesis and catalytic activity of pyridine-fused triazolylidene as a novel abnormal N-heterocyclic carbene (aNHC) ligand is described. The evaluation of physical properties using X-ray crystallographic analysis and infrared spectroscopy revealed that these triazolylidenes have a high electron-donating ability toward the metal center. The application of this triazolylidene to the palladium-catalyzed cross-coupling of chloroarenes and nitroarenes with arylboronic acids showcased its ability to activate C-Cl and C-NO2 bonds.
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Affiliation(s)
- Keiichiro Iizumi
- Department of Applied Chemistry, Waseda University, 513 Wasedatsurumakicho, Shinjuku, Tokyo 162-0041, Japan
| | - Keito P Nakayama
- Department of Applied Chemistry, Waseda University, 513 Wasedatsurumakicho, Shinjuku, Tokyo 162-0041, Japan
| | - Kenta Kato
- Department of Applied Chemistry, Waseda University, 513 Wasedatsurumakicho, Shinjuku, Tokyo 162-0041, Japan
| | - Kei Muto
- Waseda Institute for Advanced Study, Waseda University, 513 Wasedatsurumakicho, Shinjuku, Tokyo 162-0041, Japan
| | - Junichiro Yamaguchi
- Department of Applied Chemistry, Waseda University, 513 Wasedatsurumakicho, Shinjuku, Tokyo 162-0041, Japan
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4
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Matsubara K, Tomomatsu K, Tajiri A, Watanabe A, Koga Y, Ishikawa R, Yamada Y. Pincer‐type Mesoionic Carbene Nickel(II) Complexes: Synthesis, Properties, Reactions, and Catalytic Application to the Suzuki–Miyaura Coupling Reaction of Aryl Bromides. Eur J Inorg Chem 2022. [DOI: 10.1002/ejic.202100870] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Kouki Matsubara
- Fukuoka University Department of Chemistry 8-19-1 NanakumaJonan-Ku 814-0180 Fukuoka JAPAN
| | | | - Ayame Tajiri
- Fukuoka University: Fukuoka Daigaku Chemistry JAPAN
| | | | - Yuji Koga
- Fukuoka University: Fukuoka Daigaku Chemistry JAPAN
| | | | - Yuji Yamada
- Fukuoka University: Fukuoka Daigaku Chemistry JAPAN
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5
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Maity R, Sarkar B. Chemistry of Compounds Based on 1,2,3-Triazolylidene-Type Mesoionic Carbenes. JACS AU 2022; 2:22-57. [PMID: 35098220 PMCID: PMC8790748 DOI: 10.1021/jacsau.1c00338] [Citation(s) in RCA: 20] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/01/2021] [Indexed: 05/04/2023]
Abstract
Mesoionic carbenes (MICs) of the 1,2,3-triazolylidene type have established themselves as a popular class of compounds over the past decade. Primary reasons for this popularity are their modular synthesis and their strong donor properties. While such MICs have mostly been used in combination with transition metals, the past few years have also seen their utility together with main group elements. In this paper, we present an overview of the recent developments on this class of compounds that include, among others, (i) cationic and anionic MIC ligands, (ii) the donor/acceptor properties of these ligands with a focus on the several methods that are known for estimating such donor/acceptor properties, (iii) a detailed overview of 3d metal complexes and main group compounds with these MIC ligands, (iv) results on the redox and photophysical properties of compounds based on MIC ligands, and (v) an overview on electrocatalysis, redox-switchable catalysis, and small-molecule activation to highlight the applications of compounds based on MIC ligands in contemporary chemistry. By discussing several aspects from the synthetic, spectroscopic, and application point of view of these classes of compounds, we highlight the state of the art of compounds containing MICs and present a perspective for future research in this field.
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Affiliation(s)
- Ramananda Maity
- Dr.
R. Maity Department of Chemistry, University
of Calcutta, 92, A. P.
C. Road, Kolkata 700009, India
| | - Biprajit Sarkar
- Prof.
Dr. B. Sarkar Lehrstuhl für Anorganische Koordinationschemie,
Institut für Anorganische Chemie, Universität Stuttgart, Pfaffenwaldring 55, D-70569 Stuttgart, Germany
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6
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Gangwar MK, Butcher RJ. Axially chiral bis-1,2,3-Triazol-4-ylidene–Ag(I)-MIC and, bis-Au(I)-MIC complexes of (R)-BINOL and (-)-Menthol scaffold: Synthesis, structure, and characterizations. J Organomet Chem 2021. [DOI: 10.1016/j.jorganchem.2020.121626] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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7
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Rago A, Guérin C, Framery E, Jean‐Gérard L, Comby‐Zerbino C, Dugourd P, Andrioletti B. Dipyrromethene‐Triazolylidene Silver Complexes: Synthesis, Structure and Opportunities. Eur J Inorg Chem 2020. [DOI: 10.1002/ejic.202000805] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Aurélie Rago
- Institut de Chimie et Biochimie Moléculaire et Supramoléculaire, UMR CNRS 7246 Université Claude Bernard Lyon 1, Université de Lyon 43, Bd du 11 Novembre 1918 69622 Villeurbanne Cedex France
| | - Charles Guérin
- Institut de Chimie et Biochimie Moléculaire et Supramoléculaire, UMR CNRS 7246 Université Claude Bernard Lyon 1, Université de Lyon 43, Bd du 11 Novembre 1918 69622 Villeurbanne Cedex France
| | - Eric Framery
- Institut de Chimie et Biochimie Moléculaire et Supramoléculaire, UMR CNRS 7246 Université Claude Bernard Lyon 1, Université de Lyon 43, Bd du 11 Novembre 1918 69622 Villeurbanne Cedex France
| | - Ludivine Jean‐Gérard
- Institut de Chimie et Biochimie Moléculaire et Supramoléculaire, UMR CNRS 7246 Université Claude Bernard Lyon 1, Université de Lyon 43, Bd du 11 Novembre 1918 69622 Villeurbanne Cedex France
| | - Clothilde Comby‐Zerbino
- Institut Lumière Matière, UMR CNRS 5306 Université Claude Bernard Lyon 1, Université de Lyon 69622 Villeurbanne Cedex France
| | - Philippe Dugourd
- Institut Lumière Matière, UMR CNRS 5306 Université Claude Bernard Lyon 1, Université de Lyon 69622 Villeurbanne Cedex France
| | - Bruno Andrioletti
- Institut de Chimie et Biochimie Moléculaire et Supramoléculaire, UMR CNRS 7246 Université Claude Bernard Lyon 1, Université de Lyon 43, Bd du 11 Novembre 1918 69622 Villeurbanne Cedex France
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8
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Gangwar MK, Butcher RJ. Chiral tricyclic triazolooxazine derived mesoionic carbene (MIC)-Pd(II) complexes of cyclohexene oxide scaffold: Synthesis, structure, and characterizations. J Organomet Chem 2020. [DOI: 10.1016/j.jorganchem.2020.121598] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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9
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Beerhues J, Aberhan H, Streit TN, Sarkar B. Probing Electronic Properties of Triazolylidenes through Mesoionic Selones, Triazolium Salts, and Ir-Carbonyl-Triazolylidene Complexes. Organometallics 2020. [DOI: 10.1021/acs.organomet.0c00614] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Julia Beerhues
- Lehrstuhl für Anorganische Koordinationschemie, Institut für Anorganische Chemie, Universität Stuttgart, Pfaffenwaldring 55, D-70569, Stuttgart, Germany
| | - Hannes Aberhan
- Institut für Chemie und Biochemie, Freie Universität Berlin, Fabeckstraße 34-36, 14195, Berlin, Germany
| | - Tim-Niclas Streit
- Institut für Chemie und Biochemie, Freie Universität Berlin, Fabeckstraße 34-36, 14195, Berlin, Germany
| | - Biprajit Sarkar
- Lehrstuhl für Anorganische Koordinationschemie, Institut für Anorganische Chemie, Universität Stuttgart, Pfaffenwaldring 55, D-70569, Stuttgart, Germany
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10
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De la Fuente‐Olvera AA, Suárez‐Castillo OR, Mendoza‐Espinosa D. Synthesis and Catalytic Applications of Palladium(II) Complexes Supported by Hydroxyl‐Functionalized Triazolylidenes. Eur J Inorg Chem 2019. [DOI: 10.1002/ejic.201900918] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Agustín A. De la Fuente‐Olvera
- Área Académica de Química Universidad Autónoma del Estado de Hidalgo Carretera Pachuca‐Tulancingo Km. 4.5 42090 Mineral de la Reforma Hidalgo Mexico
| | - Oscar R. Suárez‐Castillo
- Área Académica de Química Universidad Autónoma del Estado de Hidalgo Carretera Pachuca‐Tulancingo Km. 4.5 42090 Mineral de la Reforma Hidalgo Mexico
| | - Daniel Mendoza‐Espinosa
- Área Académica de Química Universidad Autónoma del Estado de Hidalgo Carretera Pachuca‐Tulancingo Km. 4.5 42090 Mineral de la Reforma Hidalgo Mexico
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11
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Synthesis of the First Resorcin[4]arene-Functionalized Triazolium Salts and Their Use in Suzuki–Miyaura Cross-Coupling Reactions. Catalysts 2019. [DOI: 10.3390/catal9040388] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
Abstract
Two bulky triazolium salts, namely 1-{4(24),6(10),12(16),18(22)-tetramethylenedioxy- 2,8,14,20-tetrapentylresorcin[4]arene-5-yl}-4-phenyl-3-methyl-1H-1,2,3-triazolium tetrafluoro borate (1) and 1,4-bis{4(24),6(10),12(16),18(22)-tetramethylenedioxy-2,8,14,20-tetrapentyl resorcin[4]arene-5-yl}-3-methyl-1H-1,2,3-triazolium iodide (2), have been synthesized and assessed in the palladium-catalyzed Suzuki–Miyaura cross-coupling of aryl chlorides, with aryl boronic acids. As a general trend, the reaction rates obtained with 1 were significantly higher (up to 5 times) than those observed for 2, this mainly reflected a sterically more accessible metal center in the catalytic intermediates formed with 1. The presence of flexible pentyl chains in these intermediates, which might sterically interact with the metal center, when the latter adopts an exo-orientation with respect to the cavity, were likely responsible for the observed good performance.
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12
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Keim M, Maas G. Terminal Acetylenic Iminium Salts: Cycloaddition Reactions with Azides Leading to 1,2,3-Triazoles and Bicyclic 1,2,3-Triazolium Salts. European J Org Chem 2019. [DOI: 10.1002/ejoc.201801749] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Affiliation(s)
- Michael Keim
- Institute of Organic Chemistry I; Ulm University; Albert-Einstein-Allee 11 89081 Ulm Germany
| | - Gerhard Maas
- Institute of Organic Chemistry I; Ulm University; Albert-Einstein-Allee 11 89081 Ulm Germany
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13
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Bauri S, Donthireddy SNR, Illam PM, Rit A. Effect of Ancillary Ligand in Cyclometalated Ru(II)-NHC-Catalyzed Transfer Hydrogenation of Unsaturated Compounds. Inorg Chem 2018; 57:14582-14593. [PMID: 30421610 DOI: 10.1021/acs.inorgchem.8b02246] [Citation(s) in RCA: 38] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
In an effort to develop efficient Ru(II)-NHC-based catalyst considering their stereoelectronic effect for hydride-transfer reaction, we found that the ancillary NHC ligand can play a significant role in its catalytic performance. This effect is demonstrated by comparing the activity of two different types of orthometalated precatalysts of general formula [( p-cymene)(NHC)RuII(X)] (NHC = an imidazolylidene-based ImNHC, compound 2a-c, or a mesoionic triazolylidene-based tzNHC, compound 4) in transfer hydrogenation of carbonyl substrates. The electron-rich precatalyst, 2c, containing p-OMe-substituted NHC ligand performed significantly better than both unsubstituted complex 2a and p-CF3 substituted electron-poor complex 2b in ketone reduction. Whereas bulky mesoionic triazolylidene ligand containing complex 4 was found to be superior catalyst for aldehyde reduction and the precatalyst 2a is more suitable for the selective transfer hydrogenation of a wide range of aromatic aldimines to amines. To the best of our knowledge, this is the first systematic study on the effect of stereoelectronic tuning of ancillary orthometalated NHC ligand in Ru(II)-catalyzed transfer hydrogenations of various types of unsaturated compounds with broad substrate scope.
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Affiliation(s)
- Somnath Bauri
- Department of Chemistry , Indian Institute of Technology Madras , Chennai 600036 , India
| | - S N R Donthireddy
- Department of Chemistry , Indian Institute of Technology Madras , Chennai 600036 , India
| | | | - Arnab Rit
- Department of Chemistry , Indian Institute of Technology Madras , Chennai 600036 , India
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14
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PEPPSI-type palladium 1,2,3-triazolin-5-ylidene complexes – Synthesis, structure and catalytic properties in Suzuki-Miyaura coupling. Inorganica Chim Acta 2018. [DOI: 10.1016/j.ica.2018.06.028] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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15
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Huang W, Zhang YC, Jin R, Chen BL, Chen Z. Synthesis of Axially Chiral 1,2,3-Triazol-5-ylidene–Au(I) Complex and Its Application in Enantioselective [2 + 2] Cycloaddition of Alleneamides with Alkenes. Organometallics 2018. [DOI: 10.1021/acs.organomet.8b00524] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Affiliation(s)
- Wei Huang
- Department of Chemistry, Renmin University of China, Beijing 100872, China
| | - You-Can Zhang
- Department of Chemistry, Renmin University of China, Beijing 100872, China
| | - Rui Jin
- Department of Chemistry, Renmin University of China, Beijing 100872, China
| | - Bai-Ling Chen
- Department of Chemistry, Renmin University of China, Beijing 100872, China
| | - Zili Chen
- Department of Chemistry, Renmin University of China, Beijing 100872, China
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16
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Vivancos Á, Segarra C, Albrecht M. Mesoionic and Related Less Heteroatom-Stabilized N-Heterocyclic Carbene Complexes: Synthesis, Catalysis, and Other Applications. Chem Rev 2018; 118:9493-9586. [PMID: 30014699 DOI: 10.1021/acs.chemrev.8b00148] [Citation(s) in RCA: 323] [Impact Index Per Article: 53.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Mesoionic carbenes are a subclass of the family of N-heterocyclic carbenes that generally feature less heteroatom stabilization of the carbenic carbon and hence impart specific donor properties and reactivity schemes when coordinated to a transition metal. Therefore, mesoionic carbenes and their complexes have attracted considerable attention both from a fundamental point of view as well as for application in catalysis and beyond. As a follow-up of an earlier Chemical Reviews overview from 2009, the organometallic chemistry of N-heterocyclic carbenes with reduced heteroatom stabilization is compiled for the 2008-2017 period, including specifically the chemistry of complexes containing 1,2,3-triazolylidenes, 4-imidazolylidenes, and related 5-membered N-heterocyclic carbenes with reduced heteratom stabilization such as (is)oxazolylidenes, pyrrazolylidenes, and thiazolylidenes, as well as pyridylidenes as 6-membered N-heterocyclic carbenes with reduced heteroatom stabilization. For each ligand subclass, metalation strategies, electronic and steric properties, and applications, in particular, in metal-mediated catalysis, are compiled. Mesoionic carbenes demonstrate particularly high activity in (water) oxidation, hydrogen transfer reactions, and cyclization reactions. Unique features of these ligands are identified such as their dipolar structure, their specific donor properties, as well as stability aspects of the ligand and the complexes, which provides opportunities for further research.
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Affiliation(s)
- Ángela Vivancos
- Department of Chemistry and Biochemistry , University of Bern , Freiestrasse 3 , CH-3012 Bern , Switzerland.,Departamento de Química Inorgánica , Universidad de Murcia , Apartado 4021 , 30071 Murcia , Spain
| | - Candela Segarra
- Department of Chemistry and Biochemistry , University of Bern , Freiestrasse 3 , CH-3012 Bern , Switzerland.,Instituto de Tecnología Química , Universitat Politècnica de València-Consejo Superior de Investigaciones Científicas , Avenida de los Naranjos s/n , 46022 Valencia , Spain
| | - Martin Albrecht
- Department of Chemistry and Biochemistry , University of Bern , Freiestrasse 3 , CH-3012 Bern , Switzerland
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17
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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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18
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Lorkowski J, Żak P, Kubicki M, Pietraszuk C, Jędrzkiewicz D, Ejfler J. Dimeric palladium 1,2,3-triazol-5-ylidene complexes – synthesis, structure, reactivity and catalytic properties in Suzuki coupling. NEW J CHEM 2018. [DOI: 10.1039/c8nj00981c] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Palladium 1,2,3-triazol-5-ylidene dimers transform to bis(carbene) species and in Suzuki coupling conditions lose carbene via reductive elimination of a 5-aryltriazolium salt.
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Affiliation(s)
- Jan Lorkowski
- Adam Mickiewicz University in Poznań
- Faculty of Chemistry
- 61-614 Poznań
- Poland
| | - Patrycja Żak
- Adam Mickiewicz University in Poznań
- Faculty of Chemistry
- 61-614 Poznań
- Poland
| | - Maciej Kubicki
- Adam Mickiewicz University in Poznań
- Faculty of Chemistry
- 61-614 Poznań
- Poland
| | - Cezary Pietraszuk
- Adam Mickiewicz University in Poznań
- Faculty of Chemistry
- 61-614 Poznań
- Poland
| | | | - Jolanta Ejfler
- Faculty of Chemistry
- University of Wrocław
- 50-383 Wrocław
- Poland
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19
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Haraguchi R, Hoshino S, Yamazaki T, Fukuzawa SI. Chiral triazolylidene-Pd-PEPPSI: synthesis, characterization, and application in asymmetric Suzuki–Miyaura cross-coupling. Chem Commun (Camb) 2018; 54:2110-2113. [DOI: 10.1039/c7cc09960f] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
A novel triazolylidene-Pd-PEPPSI with ferrocene-based planar chirality has been synthesized, characterized, and applied to the asymmetric Suzuki–Miyaura cross-coupling.
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Affiliation(s)
- Ryosuke Haraguchi
- Department of Applied Chemistry
- Institute of Science and Engineering
- Chuo University
- Tokyo 112-8551
- Japan
| | - Shun Hoshino
- Department of Applied Chemistry
- Institute of Science and Engineering
- Chuo University
- Tokyo 112-8551
- Japan
| | - Tatsuro Yamazaki
- Department of Applied Chemistry
- Institute of Science and Engineering
- Chuo University
- Tokyo 112-8551
- Japan
| | - Shin-ichi Fukuzawa
- Department of Applied Chemistry
- Institute of Science and Engineering
- Chuo University
- Tokyo 112-8551
- Japan
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20
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Wang H, Zhang B, Yan X, Guo S. Palladium pincer-type complexes and zwitterionic sulfur adducts of pyridine-bridged bis(1,2,3-triazolin-5-ylidenes): syntheses, characterizations and catalytic applications. Dalton Trans 2018; 47:528-537. [DOI: 10.1039/c7dt03687f] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Different reactivities of pincer-type pyridine-bridged bis(mesoionic carbenes) towards palladium(ii) and elemental sulfur have been revealed.
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Affiliation(s)
- Haiying Wang
- Department of Chemistry
- Capital Normal University
- Beijing
- People's Republic of China
| | - Bo Zhang
- Department of Chemistry
- Capital Normal University
- Beijing
- People's Republic of China
| | - Xuechao Yan
- Department of Chemistry
- Capital Normal University
- Beijing
- People's Republic of China
| | - Shuai Guo
- Department of Chemistry
- Capital Normal University
- Beijing
- People's Republic of China
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21
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Schmid J, Frey W, Peters R. Polynuclear Enantiopure Salen–Mesoionic Carbene Hybrid Complexes. Organometallics 2017. [DOI: 10.1021/acs.organomet.7b00729] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Affiliation(s)
- Juliane Schmid
- Institut für Organische Chemie, Universität Stuttgart, Pfaffenwaldring 55, D-70569 Stuttgart, Germany
| | - Wolfgang Frey
- Institut für Organische Chemie, Universität Stuttgart, Pfaffenwaldring 55, D-70569 Stuttgart, Germany
| | - René Peters
- Institut für Organische Chemie, Universität Stuttgart, Pfaffenwaldring 55, D-70569 Stuttgart, Germany
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22
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Johnson C, Albrecht M. Triazolylidene Iron(II) Piano-Stool Complexes: Synthesis and Catalytic Hydrosilylation of Carbonyl Compounds. Organometallics 2017. [DOI: 10.1021/acs.organomet.7b00349] [Citation(s) in RCA: 43] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Affiliation(s)
- Chloe Johnson
- Departement für Chemie
und Biochemie, Universität Bern, Freiestrasse 3, CH-3012 Bern, Switzerland
| | - Martin Albrecht
- Departement für Chemie
und Biochemie, Universität Bern, Freiestrasse 3, CH-3012 Bern, Switzerland
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23
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Zhang S, Foyle SD, Okrut A, Solovyov A, Katz A, Gates BC, Dixon DA. Role of N-Heterocyclic Carbenes as Ligands in Iridium Carbonyl Clusters. J Phys Chem A 2017; 121:5029-5044. [DOI: 10.1021/acs.jpca.7b04161] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Shengjie Zhang
- Department
of Chemistry, The University of Alabama, Tuscaloosa, Alabama 35487, United States
| | - Sawyer D. Foyle
- Department
of Chemistry, The University of Alabama, Tuscaloosa, Alabama 35487, United States
| | - Alexander Okrut
- Department
of Chemical and Biomolecular Engineering, University of California at Berkeley, Berkeley, California 94720, United States
| | - Andrew Solovyov
- Department
of Chemical and Biomolecular Engineering, University of California at Berkeley, Berkeley, California 94720, United States
| | - Alexander Katz
- Department
of Chemical and Biomolecular Engineering, University of California at Berkeley, Berkeley, California 94720, United States
| | - Bruce C. Gates
- Department
of Chemical Engineering, University of California at Davis, Davis, California 95616, United States
| | - David A. Dixon
- Department
of Chemistry, The University of Alabama, Tuscaloosa, Alabama 35487, United States
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24
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Zinser CM, Nahra F, Brill M, Meadows RE, Cordes DB, Slawin AMZ, Nolan SP, Cazin CSJ. A simple synthetic entryway into palladium cross-coupling catalysis. Chem Commun (Camb) 2017; 53:7990-7993. [DOI: 10.1039/c7cc02487h] [Citation(s) in RCA: 48] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
The simple synthesis of a family of palladates containing an imidazolium counterion is presented. These “ate” complexes can be easily converted into well-defined palladium–N-heterocyclic carbene (NHC) complexes.
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Affiliation(s)
| | - Fady Nahra
- EastCHEM School of Chemistry
- University of St Andrews
- St Andrews
- UK
- Department of Physical and Inorganic Chemistry
| | - Marcel Brill
- EastCHEM School of Chemistry
- University of St Andrews
- St Andrews
- UK
| | | | - David B. Cordes
- EastCHEM School of Chemistry
- University of St Andrews
- St Andrews
- UK
| | | | - Steven P. Nolan
- Department of Physical and Inorganic Chemistry
- Ghent University
- B-9000 Ghent
- Belgium
- Chemistry Department
| | - Catherine S. J. Cazin
- EastCHEM School of Chemistry
- University of St Andrews
- St Andrews
- UK
- Department of Physical and Inorganic Chemistry
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25
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Hettmanczyk L, Schmid B, Hohloch S, Sarkar B. Palladium(ii)-Acetylacetonato Complexes with Mesoionic Carbenes: Synthesis, Structures and Their Application in the Suzuki-Miyaura Cross Coupling Reaction. Molecules 2016; 21:molecules21111561. [PMID: 27869699 PMCID: PMC6274386 DOI: 10.3390/molecules21111561] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2016] [Revised: 11/02/2016] [Accepted: 11/12/2016] [Indexed: 12/20/2022] Open
Abstract
A series of novel palladium(ii) acetylacetonato complexes bearing mesoionic carbenes (MICs) have been synthesized and characterized. The synthesis of the complexes of type (MIC)Pd(acac)I (MIC = 1-mesityl-3-methyl-4-phenyl-1,2,3-triazol-5-ylidene (1), 1,4-(2,4,6-methyl)-phenyl-3-methyl-1,2,3-triazol-5-ylidene (2), 1,4-(2,6-diisopropyl)-phenyl-3-methyl-1,2,3-triazol-5-ylidene (3); acac = acetylacetonato) via direct metalation starting from the corresponding triazolium iodides and palladium(ii) acetylacetonate is described herein. All complexes were characterized by 1H- and 13C-NMR spectroscopy and high resolution mass spectrometry. Additionally, two of the complexes were characterized by single crystal X-ray crystallography confirming a square-planar coordination geometry of the palladium(ii) center. A delocalized bonding situation was observed within the triazolylidene rings as well as for the acac ligand respectively. Complex 2 was found to be an efficient pre-catalyst for the Suzuki-Miyaura cross coupling reaction between aryl-bromides or -chlorides with phenylboronic acid.
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Affiliation(s)
- Lara Hettmanczyk
- Institut für Chemie und Biochemie, Anorganische Chemie, Freie Universität Berlin, Fabeckstraße 34-36, Berlin D-14195, Germany.
| | - Bianca Schmid
- Institut für Chemie und Biochemie, Anorganische Chemie, Freie Universität Berlin, Fabeckstraße 34-36, Berlin D-14195, Germany.
| | - Stephan Hohloch
- Institut für Chemie und Biochemie, Anorganische Chemie, Freie Universität Berlin, Fabeckstraße 34-36, Berlin D-14195, Germany.
| | - Biprajit Sarkar
- Institut für Chemie und Biochemie, Anorganische Chemie, Freie Universität Berlin, Fabeckstraße 34-36, Berlin D-14195, Germany.
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26
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Hettmanczyk L, Schulze D, Suntrup L, Sarkar B. Mono- and Digold(I) Complexes with Mesoionic Carbenes: Structural Characterization and Use in Catalytic Silver-Free Oxazoline Formation. Organometallics 2016. [DOI: 10.1021/acs.organomet.6b00675] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Lara Hettmanczyk
- Institut
für Chemie
und Biochemie, Freie Universität Berlin, Fabeckstraße
34-36, D-14195, Berlin. Germany
| | - Dennis Schulze
- Institut
für Chemie
und Biochemie, Freie Universität Berlin, Fabeckstraße
34-36, D-14195, Berlin. Germany
| | - Lisa Suntrup
- Institut
für Chemie
und Biochemie, Freie Universität Berlin, Fabeckstraße
34-36, D-14195, Berlin. Germany
| | - Biprajit Sarkar
- Institut
für Chemie
und Biochemie, Freie Universität Berlin, Fabeckstraße
34-36, D-14195, Berlin. Germany
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27
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Bolje A, Hohloch S, Košmrlj J, Sarkar B. RuII, IrIII and OsII mesoionic carbene complexes: efficient catalysts for transfer hydrogenation of selected functionalities. Dalton Trans 2016; 45:15983-15993. [DOI: 10.1039/c6dt01324d] [Citation(s) in RCA: 44] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Pyridine- and pyrimidine-appended triazolylidene donors are used as ligands for the transfer hydrogenation of a series of functionalities.
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Affiliation(s)
- Aljoša Bolje
- Faculty of Chemistry and Chemical Technology
- University of Ljubljana
- SI-1000 Ljubljana
- Slovenia
| | - Stephan Hohloch
- Institut für Chemie und Biochemie
- Anorganische Chemie
- Freie Universität Berlin
- D-14195 Berlin
- Germany
| | - Janez Košmrlj
- Faculty of Chemistry and Chemical Technology
- University of Ljubljana
- SI-1000 Ljubljana
- Slovenia
| | - Biprajit Sarkar
- Institut für Chemie und Biochemie
- Anorganische Chemie
- Freie Universität Berlin
- D-14195 Berlin
- Germany
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28
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Kumar S, Saleem F, Singh AK. ‘Click’ generated 1,2,3-triazole based organosulfur/selenium ligands and their Pd(ii) and Ru(ii) complexes: their synthesis, structure and catalytic applications. Dalton Trans 2016; 45:11445-58. [DOI: 10.1039/c6dt01406b] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Sonogashira and Suzuki–Miyaura coupling were catalyzed with Pd(ii) complexes (0.001–2 mol%), and transfer hydrogenation (in water–glycerol) was catalyzed with Ru(ii) complexes (≤0.4 mol%).
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Affiliation(s)
- Satyendra Kumar
- Department of Chemistry
- Indian Institute of Technology Delhi
- New Delhi-110016
- India
| | - Fariha Saleem
- Department of Chemistry
- Indian Institute of Technology Delhi
- New Delhi-110016
- India
| | - Ajai K. Singh
- Department of Chemistry
- Indian Institute of Technology Delhi
- New Delhi-110016
- India
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29
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Maity R, Verma A, van der Meer M, Hohloch S, Sarkar B. Palladium Complexes Bearing Mesoionic Carbene Ligands: Applications in α-Arylation, α-Methylation and Suzuki-Miyaura Coupling Reactions. Eur J Inorg Chem 2015. [DOI: 10.1002/ejic.201501031] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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30
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Mendoza-Espinosa D, González-Olvera R, Negrón-Silva GE, Angeles-Beltrán D, Suárez-Castillo OR, Álvarez-Hernández A, Santillan R. Phenoxy-Linked Mesoionic Triazol-5-ylidenes as Platforms for Multinuclear Transition Metal Complexes. Organometallics 2015. [DOI: 10.1021/acs.organomet.5b00571] [Citation(s) in RCA: 69] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Daniel Mendoza-Espinosa
- Departamento
de Ciencias Básicas, Universidad Autónoma Metropolitana-Azcapotzalco, Avenida San Pablo No. 180, México, D.F. 02200, México
| | - Rodrigo González-Olvera
- Departamento
de Ciencias Básicas, Universidad Autónoma Metropolitana-Azcapotzalco, Avenida San Pablo No. 180, México, D.F. 02200, México
| | - Guillermo E. Negrón-Silva
- Departamento
de Ciencias Básicas, Universidad Autónoma Metropolitana-Azcapotzalco, Avenida San Pablo No. 180, México, D.F. 02200, México
| | - Deyanira Angeles-Beltrán
- Departamento
de Ciencias Básicas, Universidad Autónoma Metropolitana-Azcapotzalco, Avenida San Pablo No. 180, México, D.F. 02200, México
| | - Oscar R. Suárez-Castillo
- Área
Académica de Química, Universidad Autónoma del Estado de Hidalgo, Carretera Pachuca-Tulancingo Km. 4.5, Mineral de la Reforma, Hidalgo 42090, México
| | - Alejandro Álvarez-Hernández
- Área
Académica de Química, Universidad Autónoma del Estado de Hidalgo, Carretera Pachuca-Tulancingo Km. 4.5, Mineral de la Reforma, Hidalgo 42090, México
| | - Rosa Santillan
- Departamento
de Química, Centro de Investigacion y de Estudios Avanzados del Instituto Politécnico Nacional, Apartado Postal 14-740, México, D.F. 07000, México
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31
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Donnelly KF, Segarra C, Shao LX, Suen R, Müller-Bunz H, Albrecht M. Adaptive N-Mesoionic Ligands Anchored to a Triazolylidene for Ruthenium-Mediated (De)Hydrogenation Catalysis. Organometallics 2015. [DOI: 10.1021/acs.organomet.5b00533] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Affiliation(s)
- Kate F. Donnelly
- School
of Chemistry and Chemical Biology, University College Dublin, Belfied, Dublin
4, Ireland
| | - Candela Segarra
- School
of Chemistry and Chemical Biology, University College Dublin, Belfied, Dublin
4, Ireland
- Department
of Chemistry and Biochemistry, Universität Bern, Freiestrasse 3, 3012 Bern, Switzerland
| | - Li-Xiong Shao
- School
of Chemistry and Chemical Biology, University College Dublin, Belfied, Dublin
4, Ireland
| | - Rachelle Suen
- School
of Chemistry and Chemical Biology, University College Dublin, Belfied, Dublin
4, Ireland
| | - Helge Müller-Bunz
- School
of Chemistry and Chemical Biology, University College Dublin, Belfied, Dublin
4, Ireland
| | - Martin Albrecht
- School
of Chemistry and Chemical Biology, University College Dublin, Belfied, Dublin
4, Ireland
- Department
of Chemistry and Biochemistry, Universität Bern, Freiestrasse 3, 3012 Bern, Switzerland
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32
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Maity R, van der Meer M, Hohloch S, Sarkar B. Di- and Trinuclear Iridium(III) Complexes with Poly-Mesoionic Carbenes Synthesized through Selective Base-Dependent Metalation. Organometallics 2015. [DOI: 10.1021/acs.organomet.5b00365] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Ramananda Maity
- Institut für Chemie
und Biochemie, Anorganische Chemie, Freie Universität Berlin, Fabeckstraße 34-36, D-14195, Berlin, Germany
| | - Margarethe van der Meer
- Institut für Chemie
und Biochemie, Anorganische Chemie, Freie Universität Berlin, Fabeckstraße 34-36, D-14195, Berlin, Germany
| | - Stephan Hohloch
- Institut für Chemie
und Biochemie, Anorganische Chemie, Freie Universität Berlin, Fabeckstraße 34-36, D-14195, Berlin, Germany
| | - Biprajit Sarkar
- Institut für Chemie
und Biochemie, Anorganische Chemie, Freie Universität Berlin, Fabeckstraße 34-36, D-14195, Berlin, Germany
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33
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Hohloch S, Duecker FL, van der Meer M, Sarkar B. Copper(I) complexes of mesoionic carbene: structural characterization and catalytic hydrosilylation reactions. Molecules 2015; 20:7379-95. [PMID: 25911966 PMCID: PMC6272443 DOI: 10.3390/molecules20047379] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2015] [Revised: 03/20/2015] [Accepted: 03/23/2015] [Indexed: 01/08/2023] Open
Abstract
Two series of different Cu(I)-complexes of “click” derived mesoionic carbenes are reported. Halide complexes of the type (MIC)CuI (with MIC = 1,4-(2,6-diisopropyl)-phenyl-3-methyl-1,2,3-triazol-5-ylidene (for 1b), 1-benzyl-3-methyl-4-phenyl-1,2,3-triazol-5-ylidene (for 1c)) and cationic complexes of the general formula [Cu(MIC)2]X (with MIC =1,4-dimesityl-3-methyl-1,2,3-triazol-5-ylidene, X = CuI2− (for 2á), 1,4-dimesityl-3-methyl-1,2,3-triazol-5-ylidene, X = BF4− (for 2a), 1,4-(2,6-diisopropyl)phenyl-3-methyl-1,2,3-triazol-5-ylidene, X = BF4− (for 2b), 1-benzyl-3-methyl-4-phenyl-1,2,3-triazol-5-ylidene, X = BF4− (for 2c)) have been prepared from CuI or [Cu(CH3CN)4](BF4) and the corresponding ligands, respectively. All complexes were characterized by elemental analysis and standard spectroscopic methods. Complexes 2á and 1b were studied by single-crystal X-ray diffraction analysis. Structural analysis revealed 2á to adopt a cationic form as [Cu(MIC)2](CuI2) and comparison of the NMR spectra of 2á and 2a confirmed this conformation in solution. In contrast, after crystallization complex 1b was found to adopt the desired neutral form. All complexes were tested for the reduction of cyclohexanone under hydrosilylation condition at elevated temperatures. These complexes were found to be efficient catalysts for this reaction. 2c was also found to catalyze this reaction at room temperature. Mechanistic studies have been carried out as well.
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Affiliation(s)
- Stephan Hohloch
- Institut für Chemie und Biochemie, Anorganische Chemie, Freie Universität Berlin, Fabeckstraße 34-36, Berlin D-14195, Germany.
| | - Fenja Leena Duecker
- Institut für Chemie und Biochemie, Anorganische Chemie, Freie Universität Berlin, Fabeckstraße 34-36, Berlin D-14195, Germany.
| | - Margarethe van der Meer
- Institut für Chemie und Biochemie, Anorganische Chemie, Freie Universität Berlin, Fabeckstraße 34-36, Berlin D-14195, Germany.
| | - Biprajit Sarkar
- Institut für Chemie und Biochemie, Anorganische Chemie, Freie Universität Berlin, Fabeckstraße 34-36, Berlin D-14195, Germany.
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34
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Bolje A, Hohloch S, van der Meer M, Košmrlj J, Sarkar B. Ru(II), Os(II), and Ir(III) complexes with chelating pyridyl-mesoionic carbene ligands: structural characterization and applications in transfer hydrogenation catalysis. Chemistry 2015; 21:6756-64. [PMID: 25752929 DOI: 10.1002/chem.201406481] [Citation(s) in RCA: 58] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2014] [Indexed: 11/07/2022]
Abstract
Chelating ligands with one pyridine donor and one mesoionic carbene donor are fast establishing themselves as privileged ligands in homogeneous catalysis. The synthesis of several new Ir(III)-Cp*- and Os(II)-Cym complexes (Cp* = pentamethylcyclopentadienyl, Cym = p-cymene=4-isopropyl-toluene) derived from chelating pyridyltriazolylidenes where the additional pyridine donor was incorporated via the azide part of the triazole is presented. Furthermore, different 4-substituted phenylacetylene building blocks have been used to introduce electronic fine-tuning in the ligands. The ligands thus can be generally described as 4-(4-R-phenyl)-3-methyl-1-(pyridin-2-yl)-1H-1,2,3-triazol-5-ylidene (with R being H (L(1)), Me (L(2)), OMe (L(3)), CN (L(4)), CF3 (L(5)), Br (L(6)) or NO2 (L(7))). The corresponding complexes (Ir-1 to Ir-7 and Os-1 to Os-7) were characterized by standard spectroscopic methods, and the expected three-legged, piano-stool type coordination was unambiguously confirmed by X-ray diffraction analysis of selected compounds. Together with Ru(II) analogues previously reported by us, a total of 21 complexes were tested as (pre)catalysts for the transfer hydrogenation of carbonyl groups, showing a remarkable reactivity even at very low catalyst loadings. The electronic effects of the ligands as well as different substrates were investigated. Some mechanistic elucidations are also presented.
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Affiliation(s)
- Aljoša Bolje
- Institut für Chemie und Biochemie, Anorganische Chemie, Freie Universtität Berlin, Fabeckstrasse 34-36, 14195, Berlin (Germany); Faculty of Chemistry and Chemical Technology, University of Ljubljana, Večna pot 113, 1000, Ljubljana (Slovenia)
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35
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Mitsui T, Sugihara M, Tokoro Y, Fukuzawa SI. Synthesis of adamantyl substituted 1,2,3-triazol-5-ylidene ligands and their PEPPSI-type palladium complexes. Tetrahedron 2015. [DOI: 10.1016/j.tet.2015.01.040] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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36
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Mendoza-Espinosa D, González-Olvera R, Osornio C, Negrón-Silva GE, Santillan R. Versatile O- and S-functionalized 1,2,3-triazoliums: ionic liquids for the Baylis–Hillman reaction and ligand precursors for stable MIC-transition metal complexes. NEW J CHEM 2015. [DOI: 10.1039/c4nj02076f] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A series of O- and S-functionalized triazolium salts display high performance in the Baylis–Hillman addition and allow the one-pot formation of MIC-transition metal complexes.
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Affiliation(s)
- Daniel Mendoza-Espinosa
- Departamento de Ciencias Básicas
- Universidad Autónoma Metropolitana-Azcapotzalco
- México D.F
- Mexico
| | - Rodrigo González-Olvera
- Departamento de Ciencias Básicas
- Universidad Autónoma Metropolitana-Azcapotzalco
- México D.F
- Mexico
| | - Cecilia Osornio
- Departamento de Ciencias Básicas
- Universidad Autónoma Metropolitana-Azcapotzalco
- México D.F
- Mexico
| | | | - Rosa Santillan
- Departamento de Química
- Centro de Investigación y de Estudios Avanzados del Instituto Politécnico Nacional
- 07000 México D.F
- Mexico
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37
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Furfari SK, Gyton MR, Twycross D, Cole ML. Air stable NHCs: a study of stereoelectronics and metallorganic catalytic activity. Chem Commun (Camb) 2015; 51:74-6. [DOI: 10.1039/c4cc06809b] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
IPrBr: an air stable NHC. A stereoelectronic and catalytic study of IPrBr is reported.
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Affiliation(s)
| | - Matthew R. Gyton
- School of Chemistry
- The University of New South Wales
- Sydney
- Australia
| | - Daniel Twycross
- School of Chemistry
- The University of New South Wales
- Sydney
- Australia
| | - Marcus L. Cole
- School of Chemistry
- The University of New South Wales
- Sydney
- Australia
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38
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Hruszkewycz DP, Guard LM, Balcells D, Feldman N, Hazari N, Tilset M. Effect of 2-Substituents on Allyl-Supported Precatalysts for the Suzuki–Miyaura Reaction: Relating Catalytic Efficiency to the Stability of Palladium(I) Bridging Allyl Dimers. Organometallics 2014. [DOI: 10.1021/om501250y] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Affiliation(s)
- Damian P. Hruszkewycz
- The Department of Chemistry, Yale University, P.O. Box 208107, New Haven, Connecticut 06520, United States and
| | - Louise M. Guard
- The Department of Chemistry, Yale University, P.O. Box 208107, New Haven, Connecticut 06520, United States and
| | - David Balcells
- Centre for Theoretical and Computational
Chemistry (CTCC), Department of Chemistry, University of Oslo, P.O. Box 1033 Blindern, 0315 Oslo, Norway
| | - Nicola Feldman
- The Department of Chemistry, Yale University, P.O. Box 208107, New Haven, Connecticut 06520, United States and
| | - Nilay Hazari
- The Department of Chemistry, Yale University, P.O. Box 208107, New Haven, Connecticut 06520, United States and
| | - Mats Tilset
- Centre for Theoretical and Computational
Chemistry (CTCC), Department of Chemistry, University of Oslo, P.O. Box 1033 Blindern, 0315 Oslo, Norway
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39
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Sluijter SN, Elsevier CJ. Synthesis and Reactivity of Heteroditopic Dicarbene Rhodium(I) and Iridium(I) Complexes Bearing Chelating 1,2,3-Triazolylidene–Imidazolylidene Ligands. Organometallics 2014. [DOI: 10.1021/om5007038] [Citation(s) in RCA: 49] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Soraya N. Sluijter
- Van’t Hoff Institute
for Molecular Sciences, University of Amsterdam, PO Box 94157, 1090 GD, Amsterdam, The Netherlands
| | - Cornelis J. Elsevier
- Van’t Hoff Institute
for Molecular Sciences, University of Amsterdam, PO Box 94157, 1090 GD, Amsterdam, The Netherlands
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40
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Delgado-Rebollo M, Canseco-Gonzalez D, Hollering M, Mueller-Bunz H, Albrecht M. Synthesis and catalytic alcohol oxidation and ketone transfer hydrogenation activity of donor-functionalized mesoionic triazolylidene ruthenium(II) complexes. Dalton Trans 2014; 43:4462-73. [PMID: 24336900 DOI: 10.1039/c3dt53052c] [Citation(s) in RCA: 86] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We report on the synthesis of a variety of C,E-bidentate triazolylidene ruthenium complexes that comprise different donor substituents E (E = C: phenyl anion; E = O: carboxylate, alkoxide; E = N: pyridine at heterocyclic carbon or nitrogen). Introduction of these donor functionalities is greatly facilitated by the synthetic versatility of triazoles, and their facile preparation routes. Five different complexes featuring a C,E-coordinated ruthenium center with chloride/cymene spectator ligands and three analogous solvento complexes with MeCN spectator ligands were prepared and evaluated as catalyst precursors for direct base- and oxidant-free alcohol dehydrogenation, and for transfer hydrogenation using basic iPrOH as a source of dihydrogen. In both catalytic reactions, the neutral/mono-cationic complexes with chloride/cymene spectator ligands performed better than the solvento ruthenium complexes. The donor functionality had a further profound impact on catalytic activity. For alcohol dehydrogenation, the C,C-bidentate phenyl-triazolylidene ligand induced highest conversions, while carboxylate or pyridine donor sites gave only moderate activity or none at all. In contrast, transfer hydrogenation is most efficient when a pyridyl donor group is linked to the triazolylidene via the heterocyclic carbon atom, providing turnover frequencies as high as 1400 h(-1) for cyclohexanone transfer hydrogenation. The role of the donor group is discussed in mechanistic terms.
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Affiliation(s)
- Manuela Delgado-Rebollo
- School of Chemistry & Chemical Biology, University College Dublin, Belfield, Dublin 4, Ireland.
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41
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Srivastava R. On the viability of ruthenium (II) N-heterocyclic carbene complexes as dye-sensitized solar cell (DSSCs): A theoretical study. COMPUT THEOR CHEM 2014. [DOI: 10.1016/j.comptc.2014.06.018] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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42
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Maity R, Hohloch S, Su CY, van der Meer M, Sarkar B. Cyclometalated mono- and dinuclear Ir(III) complexes with "click"-derived triazoles and mesoionic carbenes. Chemistry 2014; 20:9952-61. [PMID: 25044321 DOI: 10.1002/chem.201402838] [Citation(s) in RCA: 64] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2014] [Indexed: 11/12/2022]
Abstract
Orthometalation at Ir(III) centers is usually facile, and such orthometalated complexes often display intriguing electronic and catalytic properties. By using a central phenyl ring as C-H activation sites, we present here mono- and dinuclear Ir(III) complexes with "click"-derived 1,2,3-triazole and 1,2,3-triazol-5-ylidene ligands, in which the wingtip phenyl groups in the aforementioned ligands are additionally orthometalated and bind as carbanionic donors to the Ir(III) centers. Structural characterization of the complexes reveal a piano stool-type of coordination around the metal centers with the "click"-derived ligands bound either with C^N or C^C donor sets to the Ir(III) centers. Furthermore, whereas bond localization is observed within the 1,2,3-triazole ligands, a more delocalized situation is found in their 1,2,3-triazol-5-ylidene counterparts. All complexes were subjected to catalytic tests for the transfer hydrogenation of benzaldehyde and acetophenone. The dinuclear complexes turned out to be more active than their mononuclear counterparts. We present here the first examples of stable, isomer-pure, dinuclear cyclometalated Ir(III) complexes with poly-mesoionic-carbene ligands.
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Affiliation(s)
- Ramananda Maity
- Institut für Chemie und Biochemie, Anorganische Chemie, Freie Universität Berlin, Fabeckstrasse 34-36, 14195 Berlin (Germany), Fax: (+49) 30-838-53310
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Hohloch S, Hettmanczyk L, Sarkar B. Introducing Potential Hemilability into “Click” Triazoles and Triazolylidenes: Synthesis and Characterization of d6-Metal Complexes and Oxidation Catalysis. Eur J Inorg Chem 2014. [DOI: 10.1002/ejic.201402178] [Citation(s) in RCA: 49] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Hruszkewycz DP, Balcells D, Guard LM, Hazari N, Tilset M. Insight into the efficiency of cinnamyl-supported precatalysts for the Suzuki-Miyaura reaction: observation of Pd(I) dimers with bridging allyl ligands during catalysis. J Am Chem Soc 2014; 136:7300-16. [PMID: 24824779 DOI: 10.1021/ja412565c] [Citation(s) in RCA: 102] [Impact Index Per Article: 10.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Despite widespread use of complexes of the type Pd(L)(η(3)-allyl)Cl as precatalysts for cross-coupling, the chemistry of related Pd(I) dimers of the form (μ-allyl)(μ-Cl)Pd2(L)2 has been underexplored. Here, the relationship between the monomeric and the dimeric compounds is investigated using both experiment and theory. We report an efficient synthesis of the Pd(I) dimers (μ-allyl)(μ-Cl)Pd2(IPr)2 (allyl = allyl, crotyl, cinnamyl; IPr = 1,3-bis(2,6-diisopropylphenyl)imidazol-2-ylidene) through activation of Pd(IPr)(η(3)-allyl)Cl type monomers under mildly basic reaction conditions. The catalytic performance of the Pd(II) monomers and their Pd(I) μ-allyl dimer congeners for the Suzuki-Miyaura reaction is compared. We propose that the (μ-allyl)(μ-Cl)Pd2(IPr)2-type dimers are activated for catalysis through disproportionation to Pd(IPr)(η(3)-allyl)Cl and monoligated IPr-Pd(0). The microscopic reverse comproportionation reaction of monomers of the type Pd(IPr)(η(3)-allyl)Cl with IPr-Pd(0) to form Pd(I) dimers is also studied. It is demonstrated that this is a facile process, and Pd(I) dimers are directly observed during catalysis in reactions using Pd(II) precatalysts. In these catalytic reactions, Pd(I) μ-allyl dimer formation is a deleterious process which removes the IPr-Pd(0) active species from the reaction mixture. However, increased sterics at the 1-position of the allyl ligand in the Pd(IPr)(η(3)-crotyl)Cl and Pd(IPr)(η(3)-cinnamyl)Cl precatalysts results in a larger kinetic barrier to comproportionation, which allows more of the active IPr-Pd(0) catalyst to enter the catalytic cycle when these substituted precatalysts are used. Furthermore, we have developed reaction conditions for the Suzuki-Miyaura reaction using Pd(IPr)(η(3)-cinnamyl)Cl which are compatible with mild bases.
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Affiliation(s)
- Damian P Hruszkewycz
- The Department of Chemistry, Yale University , P.O. Box 208107, New Haven, Connecticut 06520, United States
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Rajabi F, Thiel WR. An Efficient Palladium N-Heterocyclic Carbene Catalyst Allowing the Suzuki-Miyaura Cross-Coupling of Aryl Chlorides and Arylboronic Acids at Room Temperature in Aqueous Solution. Adv Synth Catal 2014. [DOI: 10.1002/adsc.201300841] [Citation(s) in RCA: 81] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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Chen S, Lin Y, Chiang Y, Lee HM. Rational Design of Ligand Precursors to Prepare Abnormal (Mesoionic) and Normal Carbene Complexes and Zwitterionic CX‐Type Palladacycles (X = C, N). Eur J Inorg Chem 2014. [DOI: 10.1002/ejic.201301465] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Shih‐Ji Chen
- Department of Chemistry, National Changhua University of Education, Changhua 50058, Taiwan, R.O.C., http://chem.ncue.edu.tw/people/bio.php?PID=10
| | - Yuan‐Deng Lin
- Department of Chemistry, National Changhua University of Education, Changhua 50058, Taiwan, R.O.C., http://chem.ncue.edu.tw/people/bio.php?PID=10
| | - Yen‐Hsin Chiang
- Department of Chemistry, National Changhua University of Education, Changhua 50058, Taiwan, R.O.C., http://chem.ncue.edu.tw/people/bio.php?PID=10
| | - Hon Man Lee
- Department of Chemistry, National Changhua University of Education, Changhua 50058, Taiwan, R.O.C., http://chem.ncue.edu.tw/people/bio.php?PID=10
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Aizpurua JM, Fratila RM, Monasterio Z, Pérez-Esnaola N, Andreieff E, Irastorza A, Sagartzazu-Aizpurua M. Triazolium cations: from the “click” pool to multipurpose applications. NEW J CHEM 2014. [DOI: 10.1039/c3nj00667k] [Citation(s) in RCA: 102] [Impact Index Per Article: 10.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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Schulze B, Schubert US. Beyond click chemistry – supramolecular interactions of 1,2,3-triazoles. Chem Soc Rev 2014; 43:2522-71. [DOI: 10.1039/c3cs60386e] [Citation(s) in RCA: 583] [Impact Index Per Article: 58.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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