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Gogesch FS, Bauer L, Vollstädt FD, Linseis M, Senft L, Ivanović-Burmazović I, Winter RF. Pyrene fluorescence in 2,7-di(4-phenylethynyl)pyrene-bridged bis(alkenylruthenium) complexes. Dalton Trans 2023; 53:251-259. [PMID: 38037827 DOI: 10.1039/d3dt03114d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/02/2023]
Abstract
Complexes PyrDPE-RuCl and PyrDPE-Ruacac with a π-extended 2,7-di(4-phenylethynyl)pyrene linker undergo simultaneous one-electron oxidations of their {Ru}-styryl entities. The absence of an intervalence charge-transfer (IVCT) band at intermediate stages, where the mixed-valent, singly oxidized radical cation is present, and spin density confinement to the terminal styryl ruthenium site(s) are tokens of a lack of electronic coupling between the {Ru} entities across the π-conjugated linker. The close similarity of the linker-based π → π* bands in the complexes and the free ligand and their insensitivity towards oxidations at the terminal sites indicate that the central pyrenyl fluorophore is electronically decoupled from the electron-rich {Ru}-styryl termini. As a consequence, the complexes offer stable pyrene-based fluorescence emissions at 77 K, which are red-shifted from that of the linker.
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Affiliation(s)
- Franciska S Gogesch
- Fachbereich Chemie, Universität Konstanz, Universitätsstraße 10, 78457 Konstanz, Germany.
| | - Lea Bauer
- Fachbereich Chemie, Universität Konstanz, Universitätsstraße 10, 78457 Konstanz, Germany.
| | - Florian D Vollstädt
- Fachbereich Chemie, Universität Konstanz, Universitätsstraße 10, 78457 Konstanz, Germany.
| | - Michael Linseis
- Fachbereich Chemie, Universität Konstanz, Universitätsstraße 10, 78457 Konstanz, Germany.
| | - Laura Senft
- Fachbereich Chemie, Ludwig-Maximilian-Universität München, Butenandtstraße 5-13, Haus D, 81377 München, Germany
| | - Ivana Ivanović-Burmazović
- Fachbereich Chemie, Ludwig-Maximilian-Universität München, Butenandtstraße 5-13, Haus D, 81377 München, Germany
| | - Rainer F Winter
- Fachbereich Chemie, Universität Konstanz, Universitätsstraße 10, 78457 Konstanz, Germany.
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2
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Marczyk A, Mukherjee N, Trzaskowski B. Predicting initiation rates of Hoveyda-Grubbs complexes containing an electron-withdrawing group in four possible positions of the benzylidene ring. J Organomet Chem 2022. [DOI: 10.1016/j.jorganchem.2022.122508] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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3
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Self-Supported Polymeric Ruthenium Complexes as Olefin Metathesis Catalysts in Synthesis of Heterocyclic Compounds. Catalysts 2022. [DOI: 10.3390/catal12101087] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
New ruthenium olefin metathesis catalysts containing N-heterocyclic carbene (NHC) connected by a linker tether to a benzylidene ligand were studied. Such obtained self-chelated Hoveyda–Grubbs type complexes existed in the form of an organometallic polymer but could still catalyze olefin metathesis after being dissolved in an organic solvent. Although these polymeric catalysts exhibited a slightly lower activity compared to structurally related nonpolymeric catalysts, they were successfully used in a number of ring-closing metathesis reactions leading to a variety of heterocyclic compounds, including biologically and pharmacologically related analogues of cathepsin K inhibitor and sildenafil (Viagra™). In the last case, a good solubility of a polymeric catalyst in toluene allowed the separation of the product from the catalyst via simple filtration.
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Ferlin F, Anastasiou I, Salameh N, Miyakoshi T, Baudoin O, Vaccaro L. C(sp 3 )-H Arylation Promoted by a Heterogeneous Palladium-N-Heterocyclic Carbene Complex in Batch and Continuous Flow. CHEMSUSCHEM 2022; 15:e202102736. [PMID: 35098689 PMCID: PMC9303704 DOI: 10.1002/cssc.202102736] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/29/2021] [Revised: 01/24/2022] [Indexed: 06/14/2023]
Abstract
A heterogeneous reusable palladium(II)-bis(N-heterocyclic carbene) catalyst was prepared and shown to catalyze the intramolecular C(sp3 )-H activation/cyclization of N-alkyl-2-bromoanilines furnishing indolines. This new catalytic system was based on a bis-imidazolium ligand immobilized on a spaced cross-linked polystyrene support. The iodide ligands on the catalyst played a central role in the efficiency of the process occurring through a "release and catch" mechanism. The heterogeneous nature of the catalyst was further exploited in the design of a continuous-flow protocol that allowed a more efficient recovery and reuse of the catalyst, as well as a very fast and safe procedure.
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Affiliation(s)
- Francesco Ferlin
- Laboratory of Green SOCDipartimento di ChimicaBiologia e BiotecnologieUniversità degli Studi di PerugiaVia Elce di Sotto, 806124PerugiaItaly
| | - Ioannis Anastasiou
- Laboratory of Green SOCDipartimento di ChimicaBiologia e BiotecnologieUniversità degli Studi di PerugiaVia Elce di Sotto, 806124PerugiaItaly
| | - Nihad Salameh
- Laboratory of Green SOCDipartimento di ChimicaBiologia e BiotecnologieUniversità degli Studi di PerugiaVia Elce di Sotto, 806124PerugiaItaly
| | - Takeru Miyakoshi
- Department of ChemistryUniversity of BaselSt. Johanns-Ring 19CH-4056BaselSwitzerland
| | - Olivier Baudoin
- Department of ChemistryUniversity of BaselSt. Johanns-Ring 19CH-4056BaselSwitzerland
| | - Luigi Vaccaro
- Laboratory of Green SOCDipartimento di ChimicaBiologia e BiotecnologieUniversità degli Studi di PerugiaVia Elce di Sotto, 806124PerugiaItaly
- Peoples Friendship University of Russia (RUDN University)6 Miklukho-Maklaya StMoscow117198Russia
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Preparation of Ruthenium Olefin Metathesis Catalysts Immobilized on MOF, SBA-15, and 13X for Probing Heterogeneous Boomerang Effect. Catalysts 2020. [DOI: 10.3390/catal10040438] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Promoted by homogeneous Ru-benzylidene complexes, the olefin metathesis reaction is a powerful methodology for C-C double bonds formation that can find a number of applications in green chemical production. A set of heterogeneous olefin metathesis pre-catalysts composed of ammonium-tagged Ru-benzylidene complexes 4 (commercial FixCat™ catalyst) and 6 (in-house made) immobilized on solid supports such as 13X zeolite, metal-organic framework (MOF), and SBA-15 silica were obtained and tested in catalysis. These hybrid materials were doped with various amounts of ammonium-tagged styrene derivative 5—a precursor of a spare benzylidene ligand—in order to enhance pre-catalyst regeneration via the so-called release-return “boomerang effect”. Although this effect was for the first time observed inside the solid support, we discovered that non-doped systems gave better results in terms of the resulting turnover number (TON) values, and the most productive were hybrid catalysts composed of 4@MOF, 4@SBA-15, and 6@SBA-15.
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7
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Song K, Kim K, Hong D, Kim J, Heo CE, Kim HI, Hong SH. Highly active ruthenium metathesis catalysts enabling ring-opening metathesis polymerization of cyclopentadiene at low temperatures. Nat Commun 2019; 10:3860. [PMID: 31455772 PMCID: PMC6712042 DOI: 10.1038/s41467-019-11806-5] [Citation(s) in RCA: 32] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2019] [Accepted: 08/06/2019] [Indexed: 11/09/2022] Open
Abstract
Development of versatile ruthenium olefin-metathesis catalysts with high activity, stability, and selectivity is a continuous challenge. Here we report highly controllable ruthenium catalysts using readily accessible and versatile N-vinylsulfonamides as carbene precursors. Catalyst initiation rates were controlled in a straightforward manner, from latent to fast initiating, through the facile modulation of the N-vinylsulfonamide ligands. Trifluoromethanesulfonamide-based catalysts initiated ultrarapidly even at temperatures as low as -60 °C and continuously propagated rapidly, enabling the enthalpically and entropically less-favored ring-opening metathesis polymerizations of low-strained functionalized cyclopentene derivatives, some of which are not accessible with previous olefin-metathesis catalysts. To our surprise, the developed catalysts facilitated the polymerization of cyclopentadiene (CPD), a feedstock that is easily and commonly obtainable through the steam cracking of naphtha, which has, to the best of our knowledge, not been previously achieved due to its low ring strain and facile dimerization even at low temperatures (below 0 °C).
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Affiliation(s)
- Kitaek Song
- Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, 34141, Republic of Korea
- Department of Chemistry, College of Natural Sciences, Seoul National University, Seoul, 08826, Republic of Korea
| | - Kunsoon Kim
- Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, 34141, Republic of Korea
- Department of Chemistry, College of Natural Sciences, Seoul National University, Seoul, 08826, Republic of Korea
| | - Daeun Hong
- Department of Chemistry, College of Natural Sciences, Seoul National University, Seoul, 08826, Republic of Korea
| | - Jungwon Kim
- Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, 34141, Republic of Korea
- Department of Chemistry, College of Natural Sciences, Seoul National University, Seoul, 08826, Republic of Korea
| | - Chae Eun Heo
- Department of Chemistry, Korea University, Seoul, 02841, Republic of Korea
| | - Hugh I Kim
- Department of Chemistry, Korea University, Seoul, 02841, Republic of Korea
| | - Soon Hyeok Hong
- Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, 34141, Republic of Korea.
- Department of Chemistry, College of Natural Sciences, Seoul National University, Seoul, 08826, Republic of Korea.
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Nascimento DL, Gawin A, Gawin R, Guńka PA, Zachara J, Skowerski K, Fogg DE. Integrating Activity with Accessibility in Olefin Metathesis: An Unprecedentedly Reactive Ruthenium-Indenylidene Catalyst. J Am Chem Soc 2019; 141:10626-10631. [PMID: 31248254 DOI: 10.1021/jacs.9b05362] [Citation(s) in RCA: 35] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
Access to leading olefin metathesis catalysts, including the Grubbs, Hoveyda, and Grela catalysts, ultimately rests on the nonscaleable transfer of a benzylidene ligand from an unstable, impure aryldiazomethane. The indenylidene ligand can be reliably installed, but to date yields much less reactive catalysts. A fast-initiating, dimeric indenylidene complex (Ru-1) is reported, which reconciles high activity with scaleable synthesis. Each Ru center in Ru-1 is stabilized by a state-of-the-art cyclic alkyl amino carbene (CAAC, C1) and a bridging chloride donor: the lability of the latter elevates the reactivity of Ru-1 to a level previously attainable only with benzylidene derivatives. Evaluation of initiation rate constants reveals that Ru-1 initiates >250× faster than indenylidene catalyst M2 (RuCl2(H2IMes)(PCy3)(Ind)), and 65× faster than UC (RuCl2(C1)2(Ind)). The slow initiation previously regarded as characteristic of indenylidene catalysts is hence due to low ligand lability, not inherently slow cycloaddition at the Ru=CRR' site. In macrocyclization and "ethenolysis" of methyl oleate (i.e., transformation into α-olefins via cross-metathesis with C2H4), Ru-1 is comparable or superior to the corresponding, breakthrough CAAC-benzylidene catalyst. In ethenolysis, Ru-1 is 5× more robust to standard-grade (99.9%) C2H4 than the top-performing catalyst, probably reflecting steric protection at the quaternary CAAC carbon.
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Affiliation(s)
- Daniel L Nascimento
- Center for Catalysis Research and Innovation, and Department of Chemistry and Biomolecular Sciences , University of Ottawa , Ottawa , Ontario K1N 6N5 , Canada
| | - Anna Gawin
- Apeiron Synthesis , Duńska 9 , 54-427 Wrocław , Poland
| | - Rafał Gawin
- Apeiron Synthesis , Duńska 9 , 54-427 Wrocław , Poland
| | - Piotr A Guńka
- Faculty of Chemistry , Warsaw University of Technology , Noakowskiego 3 , 00-664 Warsaw , Poland
| | - Janusz Zachara
- Faculty of Chemistry , Warsaw University of Technology , Noakowskiego 3 , 00-664 Warsaw , Poland
| | | | - Deryn E Fogg
- Center for Catalysis Research and Innovation, and Department of Chemistry and Biomolecular Sciences , University of Ottawa , Ottawa , Ontario K1N 6N5 , Canada
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9
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Halter O, Spielmann J, Kanai Y, Plenio H. Monitoring Ligand Substitution in (Catalytically Active) Metal Complexes with Bodipy-Tagged Diimines and NHC Ligands. Organometallics 2019. [DOI: 10.1021/acs.organomet.9b00130] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Oliver Halter
- Organometallic Chemistry, TU Darmstadt, Alarich-Weiss-Str. 12, 64287 Darmstadt, Germany
| | - Jonas Spielmann
- Organometallic Chemistry, TU Darmstadt, Alarich-Weiss-Str. 12, 64287 Darmstadt, Germany
| | - Yuki Kanai
- Organometallic Chemistry, TU Darmstadt, Alarich-Weiss-Str. 12, 64287 Darmstadt, Germany
| | - Herbert Plenio
- Organometallic Chemistry, TU Darmstadt, Alarich-Weiss-Str. 12, 64287 Darmstadt, Germany
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10
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Halter O, Plenio H. Fluorescent Dyes in Organometallic Chemistry: Coumarin‐Tagged NHC–Metal Complexes. Eur J Inorg Chem 2018. [DOI: 10.1002/ejic.201800395] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Oliver Halter
- Organometallic Chemistry TU Darmstadt Alarich‐Weiss‐Str.12 64287 Darmstadt Germany
| | - Herbert Plenio
- Organometallic Chemistry TU Darmstadt Alarich‐Weiss‐Str.12 64287 Darmstadt Germany
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11
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Jana A, Grela K. Forged and fashioned for faithfulness-ruthenium olefin metathesis catalysts bearing ammonium tags. Chem Commun (Camb) 2018; 54:122-139. [PMID: 29188265 DOI: 10.1039/c7cc06535c] [Citation(s) in RCA: 37] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
In this article, the synthesis and applications of selected ammonium tagged Ru-alkylidene metathesis catalysts were described. Because of the straightforward synthesis, the first generation of onium-tagged catalysts have the ammonium group installed in the benzylidene ligand. Such catalysts usually give relatively pure metathesis products, and are used in polar solvents and water, or immobilised on various supports. Later, catalysts tagged in the N-heterocyclic carbene ligand (NHC) were developed to offer higher stability and even lower metal contamination levels. Due to minimal leaching, the non-dissociating ligand tagged systems were successfully immobilised on various supports, including zeolites and Metal Organic Frameworks (MOFs) and used in batch and in continuous flow conditions.
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Affiliation(s)
- Anupam Jana
- Faculty of Chemistry, Biological and Chemical Research Centre, University of Warsaw, Żwirki i Wigury 101, 02-089 Warsaw, Poland.
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12
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Keraani A, Nasser G, Shahane S, Renouard T, Bruneau C, Rabiller-Baudry M, Fischmeister C. Syntheses and characterization of molecular weight enlarged olefin metathesis pre-catalysts. CR CHIM 2017. [DOI: 10.1016/j.crci.2017.01.001] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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13
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Nasrallah H, Germain S, Queval P, Bouvier C, Mauduit M, Crévisy C, Schulz E. Non covalent immobilization of pyrene-tagged ruthenium complexes onto graphene surfaces for recycling in olefin metathesis reactions. ACTA ACUST UNITED AC 2016. [DOI: 10.1016/j.molcata.2016.10.004] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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14
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Halter O, Vasiuta R, Fernández I, Plenio H. Systematic Modulation of the Fluorescence Brightness in Boron-Dipyrromethene (BODIPY)-TaggedN-Heterocyclic Carbene (NHC)-Gold-Thiolates. Chemistry 2016; 22:18066-18072. [DOI: 10.1002/chem.201604122] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2016] [Indexed: 12/18/2022]
Affiliation(s)
- Oliver Halter
- Organometallic Chemistry; TU Darmstadt; Alarich-Weiss-Str. 12 64287 Darmstadt Germany
| | - Roman Vasiuta
- Organometallic Chemistry; TU Darmstadt; Alarich-Weiss-Str. 12 64287 Darmstadt Germany
| | - Israel Fernández
- Departamento de Química Orgánica I, Facultad de Ciencias Químicas; Universidad Complutense de Madrid; 28040 Madrid Spain
| | - Herbert Plenio
- Organometallic Chemistry; TU Darmstadt; Alarich-Weiss-Str. 12 64287 Darmstadt Germany
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15
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Dewaele A, Verpoort F, Sels B. Opportunities of Immobilized Homogeneous Metathesis Complexes as Prominent Heterogeneous Catalysts. ChemCatChem 2016. [DOI: 10.1002/cctc.201600591] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Annelies Dewaele
- Center for Surface Chemistry and Catalysis; KU Leuven; Celestijnenlaan 200F 3001 Heverlee Belgium
| | - Francis Verpoort
- Laboratory of Organometallics, Catalysis and Ordered Materials, State Key Laboratory of Advanced Technology for Materials Synthesis and Processing; Wuhan University of Technology; Wuhan P.R. China
- National Research Tomsk Polytechnic University; Lenin Avenue 30 634050 Tomsk Russian Federation
- Center for Energy and Environmental Research; Ghent University Global Campus Songdo; 119 Songdomunhwa-Ro Yeonsu-Gu Incheon 406-840 South Korea
| | - Bert Sels
- Center for Surface Chemistry and Catalysis; KU Leuven; Celestijnenlaan 200F 3001 Heverlee Belgium
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16
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Lee J, Kim KH, Lee OS, Choi TL, Lee HS, Ihee H, Sohn JH. Preference of Ruthenium-Based Metathesis Catalysts toward Z- and E-Alkenes as a Guide for Selective Reactions to Alkene Stereoisomers. J Org Chem 2016; 81:7591-6. [DOI: 10.1021/acs.joc.6b01276] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Affiliation(s)
- Jihong Lee
- Department
of Chemistry, Chungnam National University, Daejeon 305-764, Republic of Korea
| | - Kyung Hwan Kim
- Center
for Nanomaterials and Chemical Reactions, Institute for Basic Science (IBS), Daejeon 305-701, Republic of Korea
| | - Ok Suk Lee
- Department
of Chemistry, Chungnam National University, Daejeon 305-764, Republic of Korea
| | - Tae-Lim Choi
- Department
of Chemistry, Seoul National University, Seoul 151-747, Republic of Korea
| | - Hee-Seung Lee
- Department
of Chemistry, KAIST, Daejeon 305-701, Republic of Korea
| | - Hyotcherl Ihee
- Center
for Nanomaterials and Chemical Reactions, Institute for Basic Science (IBS), Daejeon 305-701, Republic of Korea
- Department
of Chemistry, KAIST, Daejeon 305-701, Republic of Korea
| | - Jeong-Hun Sohn
- Department
of Chemistry, Chungnam National University, Daejeon 305-764, Republic of Korea
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17
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Vasiuta R, Plenio H. Observing Initial Steps in Gold-Catalyzed Alkyne Transformations by Utilizing Bodipy-Tagged Phosphine-Gold Complexes. Chemistry 2016; 22:6353-60. [DOI: 10.1002/chem.201600264] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2016] [Indexed: 11/09/2022]
Affiliation(s)
- Roman Vasiuta
- Organometallic Chemistry; TU Darmstadt; Alarich-Weiss-Str. 12 64287 Darmstadt Germany
| | - Herbert Plenio
- Organometallic Chemistry; TU Darmstadt; Alarich-Weiss-Str. 12 64287 Darmstadt Germany
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18
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Hübner S, de Vries JG, Farina V. Why Does Industry Not Use Immobilized Transition Metal Complexes as Catalysts? Adv Synth Catal 2015. [DOI: 10.1002/adsc.201500846] [Citation(s) in RCA: 270] [Impact Index Per Article: 30.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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19
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Reuter R, Ward TR. Profluorescent substrates for the screening of olefin metathesis catalysts. Beilstein J Org Chem 2015; 11:1886-92. [PMID: 26664607 PMCID: PMC4660973 DOI: 10.3762/bjoc.11.203] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2015] [Accepted: 09/15/2015] [Indexed: 01/07/2023] Open
Abstract
Herein we report on a 96-well plate assay based on the fluorescence resulting from the ring-closing metathesis of two profluorophoric substrates. To demonstrate the validity of the approach, four commercially available ruthenium-metathesis catalysts were evaluated in six different solvents. The results from the fluorescent assay agree well with HPLC conversions, validating the usefulness of the approach.
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Affiliation(s)
- Raphael Reuter
- Department of Chemistry, University of Basel, Spitalstrasse 51, CH-4056 Basel, Switzerland
| | - Thomas R Ward
- Department of Chemistry, University of Basel, Spitalstrasse 51, CH-4056 Basel, Switzerland
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Rybáčková M, Hošek J, Šimůnek O, Kolaříková V, Kvíčala J. Computational study of productive and non-productive cycles in fluoroalkene metathesis. Beilstein J Org Chem 2015; 11:2150-7. [PMID: 26664636 PMCID: PMC4660995 DOI: 10.3762/bjoc.11.232] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2015] [Accepted: 10/20/2015] [Indexed: 12/30/2022] Open
Abstract
A detailed DFT study of the mechanism of metathesis of fluoroethene, 1-fluoroethene, 1,1-difluoroethene, cis- and trans-1,2-difluoroethene, tetrafluoroethene and chlorotrifluoroethene catalysed with the Hoveyda-Grubbs 2(nd) generation catalyst was performed. It revealed that a successful metathesis of hydrofluoroethenes is hampered by a high preference for a non-productive catalytic cycle proceeding through a ruthenacyclobutane intermediate bearing fluorines in positions 2 and 4. Moreover, the calculations showed that the cross-metathesis of perfluoro- or perhaloalkenes should be a feasible process and that the metathesis is not very sensitive to stereochemical issues.
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Affiliation(s)
- Markéta Rybáčková
- Department of Organic Chemistry, University of Chemistry and Technology, Technická 5, 166 28 Prague 6, Czech Republic
| | - Jan Hošek
- Department of Organic Chemistry, University of Chemistry and Technology, Technická 5, 166 28 Prague 6, Czech Republic
| | - Ondřej Šimůnek
- Department of Organic Chemistry, University of Chemistry and Technology, Technická 5, 166 28 Prague 6, Czech Republic
| | - Viola Kolaříková
- Department of Organic Chemistry, University of Chemistry and Technology, Technická 5, 166 28 Prague 6, Czech Republic
| | - Jaroslav Kvíčala
- Department of Organic Chemistry, University of Chemistry and Technology, Technická 5, 166 28 Prague 6, Czech Republic
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Wirtz M, Grüter A, Heib F, Huch V, Zapp J, Herten DP, Schmitt M, Jung G. A two-color fluorogenic carbene complex for tagging olefins via metathesis reaction. Methods Appl Fluoresc 2015; 3:044001. [DOI: 10.1088/2050-6120/3/4/044001] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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22
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Kuznetsov NY, Bubnov YN. Ruthenium-catalyzed intramolecular metathesis of dienes and its application in the synthesis of bridged and spiro azabicycles. RUSSIAN CHEMICAL REVIEWS 2015. [DOI: 10.1070/rcr4478] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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23
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Gleeson EC, Wang ZJ, Jackson WR, Robinson AJ. Divergent Approach to a Family of Tyrosine-Derived Ru–Alkylidene Olefin Metathesis Catalysts. J Org Chem 2015; 80:7205-11. [DOI: 10.1021/acs.joc.5b01091] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Ellen C. Gleeson
- School of Chemistry, Monash University, Clayton, Victoria 3800, Australia
| | - Zhen J. Wang
- School of Chemistry, Monash University, Clayton, Victoria 3800, Australia
| | - W. Roy Jackson
- School of Chemistry, Monash University, Clayton, Victoria 3800, Australia
| | - Andrea J. Robinson
- School of Chemistry, Monash University, Clayton, Victoria 3800, Australia
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Hošek J, Rybáčková M, Čejka J, Cvačka J, Kvíčala J. Synthesis of Heavy Fluorous Ruthenium Metathesis Catalysts Using the Stereoselective Addition of Polyfluoroalkyllithium to Sterically Hindered Diimines. Organometallics 2015. [DOI: 10.1021/acs.organomet.5b00325] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Affiliation(s)
- Jan Hošek
- Department
of Organic Chemistry, University of Chemistry and Technology, Prague, Technická 5, 166 28 Prague 6, Czech Republic
| | - Markéta Rybáčková
- Department
of Organic Chemistry, University of Chemistry and Technology, Prague, Technická 5, 166 28 Prague 6, Czech Republic
| | - Jan Čejka
- Department
of Solid State Chemistry, University of Chemistry and Technology, Prague, Technická 5, 166 28 Prague 6, Czech Republic
| | - Josef Cvačka
- Institute
of Organic Chemistry and Biochemistry, Academy of Sciences of the Czech Republic, v.v.i., Flemingovo nám. 2, 166
10 Prague 6, Czech Republic
| | - Jaroslav Kvíčala
- Department
of Organic Chemistry, University of Chemistry and Technology, Prague, Technická 5, 166 28 Prague 6, Czech Republic
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25
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Nelson DJ, Manzini S, Urbina-Blanco CA, Nolan SP. Key processes in ruthenium-catalysed olefin metathesis. Chem Commun (Camb) 2015; 50:10355-75. [PMID: 24931143 DOI: 10.1039/c4cc02515f] [Citation(s) in RCA: 123] [Impact Index Per Article: 13.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
While the fundamental series of [2+2]cycloadditions and retro[2+2]cycloadditions that make up the pathways of ruthenium-catalysed metathesis reactions is well-established, the exploration of mechanistic aspects of alkene metathesis continues. In this Feature Article, modern mechanistic studies of the alkene metathesis reaction, catalysed by well-defined ruthenium complexes, are discussed. Broadly, these concern the processes of pre-catalyst initiation, propagation and decomposition, which all have a considerable impact on the overall efficiency of metathesis reactions.
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Affiliation(s)
- David J Nelson
- EaStCHEM School of Chemistry, University of St Andrews, North Haugh, St Andrews, Fife, KY16 9ST, UK.
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26
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Wappel J, Grudzień K, Barbasiewicz M, Michalak M, Grela K, Slugovc C. Initiation efficacy of halo-chelated cis-dichloro-configured ruthenium-based second-generation benzylidene complexes in ring-opening metathesis polymerization. MONATSHEFTE FUR CHEMIE 2015. [DOI: 10.1007/s00706-015-1494-8] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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27
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Levin E, Ivry E, Diesendruck CE, Lemcoff NG. Water in N-heterocyclic carbene-assisted catalysis. Chem Rev 2015; 115:4607-92. [PMID: 25942582 DOI: 10.1021/cr400640e] [Citation(s) in RCA: 182] [Impact Index Per Article: 20.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Efrat Levin
- †Chemistry Department, Ben-Gurion University of the Negev, Beer-Sheva 84105, Israel
| | - Elisa Ivry
- †Chemistry Department, Ben-Gurion University of the Negev, Beer-Sheva 84105, Israel
| | - Charles E Diesendruck
- ‡Schulich Faculty of Chemistry, Technion-Israel Institute of Technology, Haifa 32000, Israel
| | - N Gabriel Lemcoff
- †Chemistry Department, Ben-Gurion University of the Negev, Beer-Sheva 84105, Israel
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28
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Easter QT, Trauschke V, Blum SA. Catalyst Inefficiencies: Supported Ring-Opening Metathesis Polymerization Catalyst Yields Its Ensemble Rate from a Small Number of Molecular Active Sites. ACS Catal 2015. [DOI: 10.1021/acscatal.5b00046] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Quinn T. Easter
- Department
of Chemistry, University of California, Irvine, Irvine, California 92697-2025, United States
| | - Vanessa Trauschke
- Department
of Chemistry, University of California, Irvine, Irvine, California 92697-2025, United States
| | - Suzanne A. Blum
- Department
of Chemistry, University of California, Irvine, Irvine, California 92697-2025, United States
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29
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Trotuş IT, Zimmermann T, Duyckaerts N, Geboers J, Schüth F. Butadiene from acetylene–ethylene cross-metathesis. Chem Commun (Camb) 2015; 51:7124-7. [DOI: 10.1039/c5cc00853k] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Direct synthesis of butadiene from acetylene and ethylene, via enyne cross-metathesis, is demonstrated with commercial ruthenium carbene catalysts.
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Affiliation(s)
| | | | | | - Jan Geboers
- Max-Planck-Institut für Kohlenforschung
- D-45470 Mülheim
- Germany
| | - Ferdi Schüth
- Max-Planck-Institut für Kohlenforschung
- D-45470 Mülheim
- Germany
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30
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Cheong JL, Wong D, Lee SG, Lim J, Lee SS. Role of grafted alkoxybenzylidene ligand in silica-supported Hoveyda–Grubbs-type catalysts. Chem Commun (Camb) 2015; 51:1042-5. [DOI: 10.1039/c4cc08627a] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Using both circulating flow and batch reaction systems, we explored the role of immobilized alkoxybenzylidene ligands in capturing and stabilizing active ruthenium species.
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Affiliation(s)
| | - Daniel Wong
- Institute of Bioengineering and Nanotechnology
- Singapore 138669
| | - Song-Gil Lee
- Institute of Bioengineering and Nanotechnology
- Singapore 138669
| | - Jaehong Lim
- Institute of Bioengineering and Nanotechnology
- Singapore 138669
| | - Su Seong Lee
- Institute of Bioengineering and Nanotechnology
- Singapore 138669
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31
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O'Neal EJ, Jensen KF. Continuous Nanofiltration and Recycle of a Metathesis Catalyst in a Microflow System. ChemCatChem 2014. [DOI: 10.1002/cctc.201402368] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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32
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33
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Bates JM, Lummiss JAM, Bailey GA, Fogg DE. Operation of the Boomerang Mechanism in Olefin Metathesis Reactions Promoted by the Second-Generation Hoveyda Catalyst. ACS Catal 2014. [DOI: 10.1021/cs500539m] [Citation(s) in RCA: 71] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Affiliation(s)
- Jennifer M. Bates
- Centre for Catalysis Research & Innovation; Department of Chemistry, University of Ottawa, Ottawa, Canada K1N 6N5
| | - Justin A. M. Lummiss
- Centre for Catalysis Research & Innovation; Department of Chemistry, University of Ottawa, Ottawa, Canada K1N 6N5
| | - Gwendolyn A. Bailey
- Centre for Catalysis Research & Innovation; Department of Chemistry, University of Ottawa, Ottawa, Canada K1N 6N5
| | - Deryn E. Fogg
- Centre for Catalysis Research & Innovation; Department of Chemistry, University of Ottawa, Ottawa, Canada K1N 6N5
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34
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Hoveyda AH. Evolution of catalytic stereoselective olefin metathesis: from ancillary transformation to purveyor of stereochemical identity. J Org Chem 2014; 79:4763-92. [PMID: 24720633 PMCID: PMC4049245 DOI: 10.1021/jo500467z] [Citation(s) in RCA: 161] [Impact Index Per Article: 16.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2014] [Indexed: 12/21/2022]
Abstract
There have been numerous significant advances in catalytic olefin metathesis (OM) during the past two decades. Such progress has transformed this important set of reactions to strategically pivotal processes that generate stereochemical identity while delivering molecules that cannot be easily prepared by alternative routes. In this Perspective, an analysis of the origin of the inception of bidentate benzylidene ligands for Ru-based OM catalysts is first presented. This is followed by an overview of the intellectual basis that culminated in the development of Mo-based diolates and stereogenic-at-Ru complexes for enantioselective OM. The principles accrued from the study of the latter Ru carbenes and Mo alkylidenes and utilized in the design of stereogenic-at-Mo, -W, and -Ru species applicable to enantioselective and Z-selective OM are then discussed. The influence of the recently introduced catalytic OM protocols on the design of synthesis routes leading to complex organic molecules is probed. The impact of a better understanding of the mechanistic nuances of OM toward the discovery of stereoselective catalysts is reviewed as well.
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Affiliation(s)
- Amir H. Hoveyda
- Department of Chemistry,
Merkert Chemistry Center, Boston College, Chestnut Hill, Massachusetts 02467, United States
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35
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Babuněk M, Šimůnek O, Hošek J, Rybáčková M, Cvačka J, Březinová A, Kvíčala J. Heavy fluorous phosphine-free ruthenium catalysts for alkene metathesis. J Fluor Chem 2014. [DOI: 10.1016/j.jfluchem.2014.03.003] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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36
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Clousier N, Filippi A, Borré E, Guibal E, Crévisy C, Caijo F, Mauduit M, Dez I, Gaumont AC. Biopolymer-supported ionic-liquid-phase ruthenium catalysts for olefin metathesis. CHEMSUSCHEM 2014; 7:1040-1045. [PMID: 24616203 DOI: 10.1002/cssc.201300804] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/02/2013] [Indexed: 06/03/2023]
Abstract
Original ruthenium supported ionic liquid phase (SILP) catalysts based on alginates as supports were developed for olefin metathesis reactions. The marine biopolymer, which fulfills most of the requisite properties for a support such as widespread abundance, insolubility in the majority of organic solvents, a high affinity for ionic liquids, high chemical stability, biodegradability, low cost, and easy processing, was impregnated by [bmim][PF6 ] containing an ionically tagged ruthenium catalyst. These biosourced catalysts show promising performances in ring-closing metathesis (RCM) and cross-metathesis (CM) reactions, with a high level of recyclability and reusability combined with a good reactivity.
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Affiliation(s)
- Nathalie Clousier
- Laboratoire de chimie moléculaire et thio-organique (LCMT), CNRS UMR 6507, INC3 M, FR 3038, ENSICAEN, Université de Caen, 6 boulevard du Maréchal Juin, Caen 14050 (France), Fax: (+33) 231-452-877
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37
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The Influence of Structure on Reactivity in Alkene Metathesis. ADVANCES IN PHYSICAL ORGANIC CHEMISTRY 2014. [DOI: 10.1016/b978-0-12-800256-8.00002-3] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
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38
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Pijnenburg NJ, Tomás-Mendivil E, Mayland KE, Kleijn H, Lutz M, Spek AL, van Koten G, Klein Gebbink RJ. Monomeric and dendritic second generation Grubbs- and Hoveyda–Grubbs-type catalysts for olefin metathesis. Inorganica Chim Acta 2014. [DOI: 10.1016/j.ica.2013.06.018] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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39
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Hoveyda–Grubbs first generation type catalyst immobilized on mesoporous molecular sieves. ACTA ACUST UNITED AC 2013. [DOI: 10.1016/j.molcata.2013.06.006] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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40
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Balcar H, Čejka J. Mesoporous molecular sieves as advanced supports for olefin metathesis catalysts. Coord Chem Rev 2013. [DOI: 10.1016/j.ccr.2013.07.026] [Citation(s) in RCA: 74] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
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41
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Thiel V, Wannowius KJ, Wolff C, Thiele CM, Plenio H. Ring-Closing Metathesis Reactions: Interpretation of Conversion-Time Data. Chemistry 2013; 19:16403-14. [DOI: 10.1002/chem.201204150] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2012] [Revised: 08/07/2013] [Indexed: 11/06/2022]
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42
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Núñez-Zarur F, Solans-Monfort X, Pleixats R, Rodríguez-Santiago L, Sodupe M. DFT Study on the Recovery of Hoveyda-Grubbs-Type Catalyst Precursors in Enyne and Diene Ring-Closing Metathesis. Chemistry 2013; 19:14553-65. [DOI: 10.1002/chem.201301898] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2013] [Indexed: 11/11/2022]
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43
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Skowerski K, Kasprzycki P, Bieniek M, Olszewski TK. Efficient, durable and reusable olefin metathesis catalysts with high affinity to silica gel. Tetrahedron 2013. [DOI: 10.1016/j.tet.2013.06.056] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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44
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Comparison of two nanofiltration membrane reactors for a model reaction of olefin metathesis achieved in toluene. Sep Purif Technol 2013. [DOI: 10.1016/j.seppur.2013.04.052] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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45
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Deraedt C, d'Halluin M, Astruc D. Metathesis Reactions: Recent Trends and Challenges. Eur J Inorg Chem 2013. [DOI: 10.1002/ejic.201300682] [Citation(s) in RCA: 97] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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46
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Nasser G, Renouard T, Shahane S, Fischmeister C, Bruneau C, Rabiller-Baudry M. Interest of the Precatalyst Design for Olefin Metathesis Operating in a Discontinuous Nanofiltration Membrane Reactor. Chempluschem 2013; 78:728-736. [DOI: 10.1002/cplu.201300112] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2013] [Revised: 04/30/2013] [Indexed: 11/08/2022]
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47
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Urbina-Blanco CA, Poater A, Lebl T, Manzini S, Slawin AMZ, Cavallo L, Nolan SP. The Activation Mechanism of Ru–Indenylidene Complexes in Olefin Metathesis. J Am Chem Soc 2013; 135:7073-9. [PMID: 23617632 DOI: 10.1021/ja402700p] [Citation(s) in RCA: 92] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Affiliation(s)
- César A. Urbina-Blanco
- EaStCHEM School of Chemistry, University of St. Andrews, North Haugh, St. Andrews,
Fife, KY16 9ST, United Kingdom
| | - Albert Poater
- Institut de Química Computacional
i Catàlisi, Departament de Química, University of Girona, Campus de Montilivi sn, 17071 Girona, Catalonia,
Spain
| | - Tomas Lebl
- EaStCHEM School of Chemistry, University of St. Andrews, North Haugh, St. Andrews,
Fife, KY16 9ST, United Kingdom
| | - Simone Manzini
- EaStCHEM School of Chemistry, University of St. Andrews, North Haugh, St. Andrews,
Fife, KY16 9ST, United Kingdom
| | - Alexandra M. Z. Slawin
- EaStCHEM School of Chemistry, University of St. Andrews, North Haugh, St. Andrews,
Fife, KY16 9ST, United Kingdom
| | - Luigi Cavallo
- Department of Chemistry
and
Biology, University of Salerno, Via Ponte
don Melillo, Fisciano I-84084, Italy
- KAUST Catalyst Center, Physical
Sciences and Engineering Division, King Abdullah University of Science and Technology, Thuwal 23955-6900, Saudi
Arabia
| | - Steven P. Nolan
- EaStCHEM School of Chemistry, University of St. Andrews, North Haugh, St. Andrews,
Fife, KY16 9ST, United Kingdom
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48
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Jee JE, Cheong JL, Lim J, Chen C, Hong SH, Lee SS. Highly Selective Macrocycle Formations by Metathesis Catalysts Fixated in Nanopores. J Org Chem 2013; 78:3048-56. [DOI: 10.1021/jo302823w] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Affiliation(s)
- Joo-Eun Jee
- Institute of Bioengineering and Nanotechnology, 31 Biopolis Way, The Nanos, Singapore
138669
| | - Jian Liang Cheong
- Institute of Bioengineering and Nanotechnology, 31 Biopolis Way, The Nanos, Singapore
138669
| | - Jaehong Lim
- Institute of Bioengineering and Nanotechnology, 31 Biopolis Way, The Nanos, Singapore
138669
| | - Cheng Chen
- Center for Nanoparticle
Research,
Institute for Basic Science, and Department of Chemistry, College
of Natural Sciences, Seoul National University, Seoul 151-747, Korea
| | - Soon Hyeok Hong
- Center for Nanoparticle
Research,
Institute for Basic Science, and Department of Chemistry, College
of Natural Sciences, Seoul National University, Seoul 151-747, Korea
| | - Su Seong Lee
- Institute of Bioengineering and Nanotechnology, 31 Biopolis Way, The Nanos, Singapore
138669
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49
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Fast Olefin Metathesis: Synthesis of 2-Aryloxy-Substituted Hoveyda-Type Complexes and Application in Ring-Closing Metathesis. Adv Synth Catal 2013. [DOI: 10.1002/adsc.201200956] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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50
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Merino E, Poli E, Díaz U, Brunel D. Synthesis and characterization of new ruthenium N-heterocyclic carbene Hoveyda II-type complexes. Study of reactivity in ring closing metathesis reactions. Dalton Trans 2013; 41:10913-8. [PMID: 22878532 DOI: 10.1039/c2dt31540h] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
This manuscript describes the synthesis and structural study of new second generation Hoveyda-Grubbs catalysts: 1,3-dimesityl-acenaphthylenyl-4,5-imidazolin-2-ylidene (BIAN-NHC) ruthenium isopropoxybenzylidene dichloride and 1,3-bis(2,6-dimethylphenyl)-2,3-dihydro-1H-imidazole Cl(2)Ru(=CH-o-O-i-PrC(6)H(4)) . The electrochemical and catalytic behavior of these new complexes was compared with the conventional NHC carbene Hoveyda II IMes-type complexes and for ring closing metathesis reactions.
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