1
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Cooper JC, Paul JE, Ramlawi N, Saengow C, Sharma A, Suslick BA, Ewoldt RH, Sottos NR, Moore JS. Reprocessability in Engineering Thermosets Achieved Through Frontal Ring-Opening Metathesis Polymerization. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2024; 36:e2402627. [PMID: 38652482 DOI: 10.1002/adma.202402627] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/20/2024] [Revised: 04/12/2024] [Indexed: 04/25/2024]
Abstract
While valued for their durability and exceptional performance, crosslinked thermosets are challenging to recycle and reuse. Here, inherent reprocessability in industrially relevant polyolefin thermosets is unveiled. Unlike prior methods, this approach eliminates the need to introduce exchangeable functionality to regenerate the material, relying instead on preserving the activity of the metathesis catalyst employed in the curing reaction. Frontal ring-opening metathesis polymerization (FROMP) proves critical to preserving this activity. Conditions controlling catalytic viability are explored to successfully reclaim performance across multiple generations of material, thus demonstrating long-term reprocessability. This straightforward and scalable remolding strategy is poised for widespread adoption. Given the anticipated growth in polyolefin thermosets, these findings represent an important conceptual advance in the pursuit of a fully circular lifecycle for thermoset polymers.
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Affiliation(s)
- Julian C Cooper
- Beckman Institute for Advanced Science and Technology, University of Illinois Urbana-Champaign, Urbana, IL, 61801, USA
- Department of Chemistry, University of Illinois Urbana-Champaign, Urbana, IL, 61801, USA
| | - Justine E Paul
- Beckman Institute for Advanced Science and Technology, University of Illinois Urbana-Champaign, Urbana, IL, 61801, USA
- Department of Materials Science and Engineering, University of Illinois Urbana-Champaign, Urbana, IL, 61801, USA
| | - Nabil Ramlawi
- Department of Mechanical Science and Engineering, University of Illinois Urban-Champaign, Urbana, IL, 61801, USA
| | - Chaimongkol Saengow
- Beckman Institute for Advanced Science and Technology, University of Illinois Urbana-Champaign, Urbana, IL, 61801, USA
- Department of Mechanical Science and Engineering, University of Illinois Urban-Champaign, Urbana, IL, 61801, USA
| | - Anisha Sharma
- Beckman Institute for Advanced Science and Technology, University of Illinois Urbana-Champaign, Urbana, IL, 61801, USA
- Department of Materials Science and Engineering, University of Illinois Urbana-Champaign, Urbana, IL, 61801, USA
| | - Benjamin A Suslick
- Beckman Institute for Advanced Science and Technology, University of Illinois Urbana-Champaign, Urbana, IL, 61801, USA
- Department of Chemistry, University of Illinois Urbana-Champaign, Urbana, IL, 61801, USA
| | - Randy H Ewoldt
- Beckman Institute for Advanced Science and Technology, University of Illinois Urbana-Champaign, Urbana, IL, 61801, USA
- Department of Mechanical Science and Engineering, University of Illinois Urban-Champaign, Urbana, IL, 61801, USA
| | - Nancy R Sottos
- Beckman Institute for Advanced Science and Technology, University of Illinois Urbana-Champaign, Urbana, IL, 61801, USA
- Department of Materials Science and Engineering, University of Illinois Urbana-Champaign, Urbana, IL, 61801, USA
| | - Jeffrey S Moore
- Beckman Institute for Advanced Science and Technology, University of Illinois Urbana-Champaign, Urbana, IL, 61801, USA
- Department of Chemistry, University of Illinois Urbana-Champaign, Urbana, IL, 61801, USA
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2
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Lessard JJ, Mejia EB, Kim AJ, Zhang Z, Berkey MG, Medina-Barreto ZS, Ewoldt RH, Sottos NR, Moore JS. Unraveling Reactivity Differences: Room-Temperature Ring-Opening Metathesis Polymerization (ROMP) versus Frontal ROMP. J Am Chem Soc 2024; 146:7216-7221. [PMID: 38441481 DOI: 10.1021/jacs.4c01578] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/21/2024]
Abstract
In this study, we explore the distinct reactivity patterns between frontal ring-opening metathesis polymerization (FROMP) and room-temperature solventless ring-opening metathesis polymerization (ROMP). Despite their shared mechanism, we find that FROMP is less sensitive to inhibitor concentration than room-temperature ROMP. By increasing the initiator-to-monomer ratio for a fixed inhibitor/initiator quantity, we find reduction in the ROMP background reactivity at room temperature (i.e., increased resin pot life). At elevated temperatures where inhibitor dissociation prevails, accelerated frontal polymerization rates are observed because of the concentrated presence of the initiator. Surprisingly, the strategy of employing higher initiator loading enhances both pot life and front speeds, which leads to FROMP rates exceeding prior reported values by over 5 times. This counterintuitive behavior is attributed to an increase in the proximity of the inhibitor to the initiator within the bulk resin and to whether the temperature favors coordination or dissociation of the inhibitor. A rapid method was developed for assessing resin pot life, and a straightforward model for active initiator behavior was established. Modified resin systems enabled direct ink writing of robust thermoset structures at rates much faster than previously possible.
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Affiliation(s)
- Jacob J Lessard
- Beckman Institute for Advanced Science and Technology, Department of Chemistry, University of Illinois Urbana-Champaign, Urbana, Illinois 61801, United States of America
| | - Edgar B Mejia
- Beckman Institute for Advanced Science and Technology, Department of Material Science and Engineering, University of Illinois Urbana-Champaign, Urbana, Illinois 61801, United States of America
| | - Abbie J Kim
- Beckman Institute for Advanced Science and Technology, Department of Chemistry, University of Illinois Urbana-Champaign, Urbana, Illinois 61801, United States of America
| | - Zhang Zhang
- Beckman Institute for Advanced Science and Technology, Department of Material Science and Engineering, University of Illinois Urbana-Champaign, Urbana, Illinois 61801, United States of America
| | - Mya G Berkey
- Beckman Institute for Advanced Science and Technology, Department of Chemistry, University of Illinois Urbana-Champaign, Urbana, Illinois 61801, United States of America
| | - Zina S Medina-Barreto
- Beckman Institute for Advanced Science and Technology, Department of Material Science and Engineering, University of Illinois Urbana-Champaign, Urbana, Illinois 61801, United States of America
| | - Randy H Ewoldt
- Beckman Institute for Advanced Science and Technology, Department of Mechanical Science and Engineering, University of Illinois Urbana-Champaign, Urbana, Illinois 61801, United States of America
| | - Nancy R Sottos
- Beckman Institute for Advanced Science and Technology, Department of Material Science and Engineering, University of Illinois Urbana-Champaign, Urbana, Illinois 61801, United States of America
| | - Jeffrey S Moore
- Beckman Institute for Advanced Science and Technology, Department of Chemistry, University of Illinois Urbana-Champaign, Urbana, Illinois 61801, United States of America
- Beckman Institute for Advanced Science and Technology, Department of Material Science and Engineering, University of Illinois Urbana-Champaign, Urbana, Illinois 61801, United States of America
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3
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Lee H, Kim C. Synthesis of air‐stable poly(benzonorbornadiene)s via ring‐opening metathesis polymerization. JOURNAL OF POLYMER SCIENCE 2023. [DOI: 10.1002/pol.20220677] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/16/2023]
Affiliation(s)
- Huijin Lee
- Department of Chemistry Chungbuk National University Cheongju South Korea
| | - Cheoljae Kim
- Department of Chemistry Chungbuk National University Cheongju South Korea
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4
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Hsu TW, Kempel SJ, Felix Thayne AP, Michaudel Q. Stereocontrolled acyclic diene metathesis polymerization. Nat Chem 2023; 15:14-20. [PMID: 36280767 PMCID: PMC10284023 DOI: 10.1038/s41557-022-01060-6] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2022] [Accepted: 09/08/2022] [Indexed: 01/17/2023]
Abstract
The cis/trans geometry of olefins is known to dramatically influence the thermal and mechanical properties of polyalkenamers. Yet, polymerization methods that efficiently control this parameter are scarce. Here we report the development of a stereoretentive acyclic diene metathesis polymerization that uses the reactivity of dithiolate Ru carbenes combined with cis monomers. These Ru catalysts exhibit exquisite retention of the cis geometry and tolerate many polar functional groups, enabling the synthesis of all-cis polyesters, polycarbonates, polyethers and polysulfites. The stereoretentive acyclic diene metathesis polymerization is also characterized by low catalyst loadings and tolerance towards trans impurities in the monomer batch, which should facilitate large-scale implementation. Modulation of the reaction temperature and time leads to an erosion of stereoretention, permitting a stereocontrolled synthesis of polyalkenamers with predictable cis:trans ratios. The impact of the stereochemistry of the repeating alkenes on the thermal properties is clearly demonstrated through differential scanning calorimetry and thermogravimetric analysis.
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Affiliation(s)
- Ting-Wei Hsu
- Department of Chemistry, Texas A&M University, College Station, TX, USA
| | - Samuel J Kempel
- Department of Chemistry, Texas A&M University, College Station, TX, USA
| | | | - Quentin Michaudel
- Department of Chemistry, Texas A&M University, College Station, TX, USA.
- Department of Materials Science and Engineering, Texas A&M University, College Station, TX, USA.
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5
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Bai J, Wang Y, You W. Ring-opening metathesis polymerization of cyclopropene derivatives towards polyolefin elastomer analogues. Sci China Chem 2022. [DOI: 10.1007/s11426-022-1395-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/05/2022]
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6
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Liu S, Yan J, Zhang Q, Yan Y. Acyclic Diene Metathesis (ADMET) as Powerful Tool for Functional Polymers with Versatile Architectures. J Inorg Organomet Polym Mater 2022. [DOI: 10.1007/s10904-022-02386-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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7
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Kim D, Pillon G, DiPrimio DJ, Holland PL. Highly Z-Selective Double Bond Transposition in Simple Alkenes and Allylarenes through a Spin-Accelerated Allyl Mechanism. J Am Chem Soc 2021; 143:3070-3074. [DOI: 10.1021/jacs.1c00856] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Daniel Kim
- Department of Chemistry, Yale University, 225 Prospect Street, New Haven, Connecticut 06520, United States
| | - Guy Pillon
- Department of Chemistry, Yale University, 225 Prospect Street, New Haven, Connecticut 06520, United States
| | - Daniel J. DiPrimio
- Department of Chemistry, Yale University, 225 Prospect Street, New Haven, Connecticut 06520, United States
| | - Patrick L. Holland
- Department of Chemistry, Yale University, 225 Prospect Street, New Haven, Connecticut 06520, United States
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8
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Chinen BL, Hyvl J, Brayton DF, Riek MM, Yoshida WY, Chapp TW, Rheingold AL, Cain MF. Trimerization and cyclization of reactive P-functionalities confined within OCO pincers. RSC Adv 2021; 11:28602-28613. [PMID: 35478534 PMCID: PMC9038090 DOI: 10.1039/d1ra05926b] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2021] [Accepted: 08/10/2021] [Indexed: 01/04/2023] Open
Abstract
In order to stabilize a 10–P–3 species with C2v symmetry and two lone pairs on the central phosphorus atom, a specialized ligand is required. Using an NCN pincer, previous efforts to enforce this planarized geometry at P resulted in the formation of a Cs-symmetric, 10π-electron benzazaphosphole that existed as a dynamic “bell-clapper” in solution. Here, OCO pincers 1 and 2 were synthesized, operating under the hypothesis that the more electron-withdrawing oxygen donors would better stabilize the 3-center, 4-electron O–P–O bond of the 10–P–3 target and the sp3-hybridized benzylic carbon atoms would prevent the formation of aromatic P-heterocycles. However, subjecting 1 to a metalation/phosphination/reduction sequence afforded cyclotriphosphane 3, resulting from trimerization of the P(i) center unbound by its oxygen donors. Pincer 2 featuring four benzylic CF3 groups was expected to strengthen the O–P–O bond of the target, but after metal–halogen exchange and quenching with PCl3, unexpected cyclization with loss of CH3Cl was observed to give monochlorinated 5. Treatment of 5 with (p-CH3)C6H4MgBr generated crystalline P-(p-Tol) derivative 6, which was characterized by NMR spectroscopy, elemental analysis, and X-ray crystallography. The complex 19F NMR spectra of 5 and 6 observed experimentally, were reproduced by simulations with MestreNova. Attempted synthesis of OCO-supported 10–P–3 species led to trimerization or cyclization.![]()
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Affiliation(s)
- Beatrice L. Chinen
- Department of Chemistry, University of Hawai'i at Mānoa, 2545 McCarthy Mall, Honolulu, HI 96822, USA
| | - Jakub Hyvl
- Department of Chemistry, University of Hawai'i at Mānoa, 2545 McCarthy Mall, Honolulu, HI 96822, USA
| | - Daniel F. Brayton
- Department of Chemistry, University of Hawai'i at Mānoa, 2545 McCarthy Mall, Honolulu, HI 96822, USA
| | - Matthew M. Riek
- Department of Chemistry, University of Hawai'i at Mānoa, 2545 McCarthy Mall, Honolulu, HI 96822, USA
| | - Wesley Y. Yoshida
- Department of Chemistry, University of Hawai'i at Mānoa, 2545 McCarthy Mall, Honolulu, HI 96822, USA
| | - Timothy W. Chapp
- Department of Chemistry, Allegheny College, 520 N. Main Street, Meadville, PA 16335, USA
| | - Arnold L. Rheingold
- Department of Chemistry, University of California, 9500 Gilman Drive, La Jolla, San Diego, California 92093, USA
| | - Matthew F. Cain
- Department of Chemistry, University of Hawai'i at Mānoa, 2545 McCarthy Mall, Honolulu, HI 96822, USA
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9
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De‐Botton S, Filippov DOA, Shubina ES, Belkova NV, Gelman D. Regioselective Isomerization of Terminal Alkenes Catalyzed by a PC(sp
3
)Pincer Complex with a Hemilabile Pendant Arm. ChemCatChem 2020. [DOI: 10.1002/cctc.202001308] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
- Sophie De‐Botton
- Institute of Chemistry, Edmond J. Safra Campus The Hebrew University of Jerusalem Jerusalem 91904 Israel
| | - D.Sc. Oleg A. Filippov
- A.N. Nesmeyanov Institute of Organoelement Compounds Russian Academy of Sciences Vavilov Street 28 119991 Moscow Russia
| | - Elena S. Shubina
- A.N. Nesmeyanov Institute of Organoelement Compounds Russian Academy of Sciences Vavilov Street 28 119991 Moscow Russia
| | - Natalia V. Belkova
- A.N. Nesmeyanov Institute of Organoelement Compounds Russian Academy of Sciences Vavilov Street 28 119991 Moscow Russia
| | - Dmitri Gelman
- Institute of Chemistry, Edmond J. Safra Campus The Hebrew University of Jerusalem Jerusalem 91904 Israel
- Peoples' Friendship University of Russia (RUDN University) Miklukho-Maklay St., 6 117198 Moscow Russia
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10
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Smit W, Foscato M, Occhipinti G, Jensen VR. Ethylene-Triggered Formation of Ruthenium Alkylidene from Decomposed Catalyst. ACS Catal 2020. [DOI: 10.1021/acscatal.0c02206] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Affiliation(s)
- Wietse Smit
- Department of Chemistry, University of Bergen, Allégaten 41, N-5007 Bergen, Norway
| | - Marco Foscato
- Department of Chemistry, University of Bergen, Allégaten 41, N-5007 Bergen, Norway
| | - Giovanni Occhipinti
- Department of Chemistry, University of Bergen, Allégaten 41, N-5007 Bergen, Norway
| | - Vidar R. Jensen
- Department of Chemistry, University of Bergen, Allégaten 41, N-5007 Bergen, Norway
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11
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Cook A, Prakash S, Zheng YL, Newman SG. Exhaustive Reduction of Esters Enabled by Nickel Catalysis. J Am Chem Soc 2020; 142:8109-8115. [PMID: 32319766 DOI: 10.1021/jacs.0c02405] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
We report a one-step procedure to directly reduce unactivated aryl esters into their corresponding tolyl derivatives. This is achieved by an organosilane-mediated ester hydrosilylation reaction and subsequent Ni/NHC-catalyzed hydrogenolysis. The resulting conditions provide a direct and efficient alternative to multi-step procedures for this transformation that often require the use of hazardous metal hydrides. Applications in the synthesis of -CD3-containing products, derivatization of bioactive molecules, and chemoselective reduction in the presence of other C-O bonds are demonstrated.
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Affiliation(s)
- Adam Cook
- Centre for Catalysis Research and Innovation, Department of Chemistry and Biomolecular Sciences, University of Ottawa, 10 Marie Curie, Ottawa, Ontario K1N 6N5, Canada
| | - Sekar Prakash
- Centre for Catalysis Research and Innovation, Department of Chemistry and Biomolecular Sciences, University of Ottawa, 10 Marie Curie, Ottawa, Ontario K1N 6N5, Canada
| | - Yan-Long Zheng
- Centre for Catalysis Research and Innovation, Department of Chemistry and Biomolecular Sciences, University of Ottawa, 10 Marie Curie, Ottawa, Ontario K1N 6N5, Canada
| | - Stephen G Newman
- Centre for Catalysis Research and Innovation, Department of Chemistry and Biomolecular Sciences, University of Ottawa, 10 Marie Curie, Ottawa, Ontario K1N 6N5, Canada
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12
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Engl PS, Tsygankov A, De Jesus Silva J, Lange J, Copéret C, Togni A, Fedorov A. Acrylate Esters by Ethenolysis of Maleate Esters with Ru Metathesis Catalysts: an HTE and a Technoeconomic Study. Helv Chim Acta 2020. [DOI: 10.1002/hlca.202000035] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Pascal S. Engl
- Department of Chemistry and Applied Biosciences, ETH Zürich Vladimir-Prelog-Weg 1–5 CH-8093 Zürich Switzerland
| | - Alexey Tsygankov
- Department of Chemistry and Applied Biosciences, ETH Zürich Vladimir-Prelog-Weg 1–5 CH-8093 Zürich Switzerland
- Current address: A.N. Nesmeyanov Institute of Organoelement Compounds of the Russian Academy of Sciences Vavilova str. 28 RU 119991 Moscow Russia
| | - Jordan De Jesus Silva
- Department of Chemistry and Applied Biosciences, ETH Zürich Vladimir-Prelog-Weg 1–5 CH-8093 Zürich Switzerland
| | - Jean‐Paul Lange
- Shell Research and Technology Center Amsterdam Grasweg 31 NL-1031 HW Amsterdam, The Netherlands
- Sustainable Process TechnologyUniversity of Twente Drienerlolaan 5 NL-7522 NB Enschede, The Netherlands
| | - Christophe Copéret
- Department of Chemistry and Applied Biosciences, ETH Zürich Vladimir-Prelog-Weg 1–5 CH-8093 Zürich Switzerland
| | - Antonio Togni
- Department of Chemistry and Applied Biosciences, ETH Zürich Vladimir-Prelog-Weg 1–5 CH-8093 Zürich Switzerland
| | - Alexey Fedorov
- Department of Chemistry and Applied Biosciences, ETH Zürich Vladimir-Prelog-Weg 1–5 CH-8093 Zürich Switzerland
- Department of Mechanical and Process Engineering, ETH Zürich Leonhardstrasse 21 CH-8092 Zürich Switzerland
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13
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Morontsev A, Gringolts M, Lakhtin V, Finkelshtein E. Synthesis of high-molecular weight poly(1,1-dimethyl-1-silapentene) by olefin metathesis polymerization in the presence of Grubbs catalysts. J Organomet Chem 2020. [DOI: 10.1016/j.jorganchem.2020.121156] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
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14
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Yan F, Liang H, Ai B, Liang W, Jiao L, Yao S, Zhao P, Liu Q, Dong Y, Liu H. Palladium-catalyzed intermolecular [4 + 2] formal cycloaddition with (Z)-3-iodo allylic nucleophiles and allenamides. Org Biomol Chem 2019; 17:2651-2656. [PMID: 30778484 DOI: 10.1039/c8ob03072c] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A highly chemo- and regioselective [4 + 2] formal cycloaddition of (Z)-3-iodo allylic nucleophiles and allenamides catalyzed by palladium is reported. The methodology proceeds under mild reaction conditions and is tolerant of alkyl and aryl functional groups. The SN2' substitution at the proximal C[double bond, length as m-dash]C bond performed against the Heck or SN2 pathway delivered a variety of 2-amino-dihydropyrans and 2-amino-tetrahydropiperidines in moderate to satisfactory yields. The [4 + 2] formal cycloaddition derivatives are convertible to interesting scaffolds 2,6,7,7a-tetrahydropyrano[2,3-b]pyrrole and 2,6,7,7a-tetrahydro-1H-pyrrolo[2,3-b]pyridine derivatives via ring-closing metathesis (RCM) with Grubbs catalyst II.
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Affiliation(s)
- Fachao Yan
- School of Chemistry and Chemical Engineering, Shandong University of Technology, 266 West Xincun Road, Zibo 255049, P. R. China.
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15
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Bell M, Hester HG, Gallman AN, Gomez V, Pribyl J, Rojas G, Riegger A, Weil T, Watanabe H, Chujo Y, Wagener KB. Bulk Acyclic Diene Metathesis Polycondensation. MACROMOL CHEM PHYS 2019. [DOI: 10.1002/macp.201900223] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Michael Bell
- The George and Josephine Butler Polymer Research Laboratory Department of Chemistry University of Florida Gainesville FL 32601 USA
| | - Holley Grace Hester
- The George and Josephine Butler Polymer Research Laboratory Department of Chemistry University of Florida Gainesville FL 32601 USA
| | - Alec Nicholas Gallman
- The George and Josephine Butler Polymer Research Laboratory Department of Chemistry University of Florida Gainesville FL 32601 USA
| | - Valentina Gomez
- The George and Josephine Butler Polymer Research Laboratory Department of Chemistry University of Florida Gainesville FL 32601 USA
| | - Julia Pribyl
- The George and Josephine Butler Polymer Research Laboratory Department of Chemistry University of Florida Gainesville FL 32601 USA
| | - Giovanni Rojas
- Departamento de Ciencias Químicas Universidad ICESI Cali Colombia
| | - Andreas Riegger
- Institute of Organic Chemistry Ulm University Albert‐Einstein‐Allee 11 89081 Ulm Germany
- Max Planck Institute for Polymer Research Ackermannweg 10 55128 Mainz Germany
| | - Tanja Weil
- Institute of Organic Chemistry Ulm University Albert‐Einstein‐Allee 11 89081 Ulm Germany
- Max Planck Institute for Polymer Research Ackermannweg 10 55128 Mainz Germany
| | - Hiro Watanabe
- Department of Polymer Chemistry Graduate School of Engineering Kyoto University Katsura Nishikyo‐ku Kyoto 615–8510 Japan
| | - Yoshiki Chujo
- Department of Polymer Chemistry Graduate School of Engineering Kyoto University Katsura Nishikyo‐ku Kyoto 615–8510 Japan
| | - Kenneth B. Wagener
- The George and Josephine Butler Polymer Research Laboratory Department of Chemistry University of Florida Gainesville FL 32601 USA
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16
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Kim C, Chung H. Oligo(ethylene glycol) Length Effect of Water-Soluble Ru-Based Olefin Metathesis Catalysts on Reactivity and Removability. J Org Chem 2018; 83:9787-9794. [PMID: 30092137 DOI: 10.1021/acs.joc.8b01312] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A study of reaction kinetics and removal efficiency of a family of ruthenium (Ru)-based olefin metathesis catalysts containing ethylene-glycol-oligomer-tethered N-heterocyclic carbene (NHC) ligands has been carried out, with a focus on variation of ethylene glycol oligomer length. The length of ethylene glycol oligomer was precisely defined by sequential addition of repeating units. Due to the dual solubility of ethylene glycol oligomer, the produced catalyst was highly soluble in both aqueous and organic solvents (dichloromethane). In aqueous solution, the polarity increase with longer ethylene glycol oligomers enhanced the reactivity in homogeneous solution. The length of ethylene glycol oligomer did not significantly affect olefin metathesis rate in organic solution. Yet the removal efficiency of catalyst strongly relies on the length of ethylene glycol oligomer. A longer ethylene glycol oligomer demonstrated better catalyst removal efficiency. The tested catalyst removal method was aqueous extraction from organic solution using its higher water solubility property compared to its lower organic solvent (dichloromethane) solubility property. The results obtained from the aqueous extraction catalyst removal method demonstrated similar and/or better removal rates compared to previously reported host-guest catalyst removal methods.
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Affiliation(s)
- Cheoljae Kim
- Department of Chemical and Biomedical Engineering , Florida State University , 2525 Pottsdamer Street, Building A, Suite A131 , Tallahassee , Florida 32310 , United States
| | - Hoyong Chung
- Department of Chemical and Biomedical Engineering , Florida State University , 2525 Pottsdamer Street, Building A, Suite A131 , Tallahassee , Florida 32310 , United States
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17
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Ahmed TS, Grandner JM, Taylor BLH, Herbert MB, Houk KN, Grubbs RH. Metathesis and Decomposition of Fischer Carbenes of Cyclometalated Z-Selective Ruthenium Metathesis Catalysts. Organometallics 2018. [DOI: 10.1021/acs.organomet.8b00150] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Tonia S. Ahmed
- Arnold and Mabel Beckman Laboratory of Chemical Synthesis, Division of Chemistry and Chemical Engineering, California Institute of Technology, Pasadena, California 91125, United States
| | - Jessica M. Grandner
- Department of Chemistry and Biochemistry, University of California, Los Angeles, California 90095, United States
| | - Buck L. H. Taylor
- Department of Chemistry and Biochemistry, University of California, Los Angeles, California 90095, United States
| | - Myles B. Herbert
- Arnold and Mabel Beckman Laboratory of Chemical Synthesis, Division of Chemistry and Chemical Engineering, California Institute of Technology, Pasadena, California 91125, United States
| | - K. N. Houk
- Department of Chemistry and Biochemistry, University of California, Los Angeles, California 90095, United States
| | - Robert H. Grubbs
- Arnold and Mabel Beckman Laboratory of Chemical Synthesis, Division of Chemistry and Chemical Engineering, California Institute of Technology, Pasadena, California 91125, United States
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18
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Usami Y, Kohno A, Yoneyama H, Harusawa S. Synthesis of Dihydrooxepino[3,2-c]Pyrazoles via Claisen Rearrangement and Ring-Closing Metathesis from 4-Allyloxy-1H-pyrazoles. Molecules 2018; 23:E592. [PMID: 29509713 PMCID: PMC6017168 DOI: 10.3390/molecules23030592] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2018] [Revised: 02/26/2018] [Accepted: 03/04/2018] [Indexed: 11/16/2022] Open
Abstract
Synthesis of novel pyrazole-fused heterocycles, i.e., dihydro-1H- or 2H-oxepino[3,2-c]pyrazoles (6 or 7) from 4-allyloxy-1H-pyrazoles (1) via combination of Claisen rearrangement and ring-closing metathesis (RCM) has been achieved. A suitable catalyst for the RCM of 5-allyl-4-allyloxy-1H-pyrazoles (4) was proved to be the Grubbs second generation catalyst (Grubbs2nd) to give the predicted RCM product at room temperature in three hours. The same reactions of the regioisomer, 3-allyl-4-allyloxy-1H-pyrazoles (5), also proceeded to give the corresponding RCM products. On the other hand, microwave aided RCM at 140 °C on both of 4 and 5 afforded mixtures of isomeric products with double bond rearrangement from normal RCM products in spite of remarkable reduction of the reaction time to 10 min.
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Affiliation(s)
- Yoshihide Usami
- Laboratory of Pharmaceutical Organic Chemistry, Osaka University of Pharmaceutical Sciences, 4-20-1 Nasahara, Takatsuki, Osaka 569-1094, Japan.
| | - Aoi Kohno
- Laboratory of Pharmaceutical Organic Chemistry, Osaka University of Pharmaceutical Sciences, 4-20-1 Nasahara, Takatsuki, Osaka 569-1094, Japan.
| | - Hiroki Yoneyama
- Laboratory of Pharmaceutical Organic Chemistry, Osaka University of Pharmaceutical Sciences, 4-20-1 Nasahara, Takatsuki, Osaka 569-1094, Japan.
| | - Shinya Harusawa
- Laboratory of Pharmaceutical Organic Chemistry, Osaka University of Pharmaceutical Sciences, 4-20-1 Nasahara, Takatsuki, Osaka 569-1094, Japan.
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19
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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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20
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Engel J, Smit W, Foscato M, Occhipinti G, Törnroos KW, Jensen VR. Loss and Reformation of Ruthenium Alkylidene: Connecting Olefin Metathesis, Catalyst Deactivation, Regeneration, and Isomerization. J Am Chem Soc 2017; 139:16609-16619. [DOI: 10.1021/jacs.7b07694] [Citation(s) in RCA: 61] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Affiliation(s)
- Julien Engel
- Institute
of Organic Chemistry, RWTH Aachen University, Landoltweg 1, D-52074 Aachen, Germany
| | - Wietse Smit
- Department
of Chemistry, University of Bergen, Allégaten 41, N-5007 Bergen, Norway
| | - Marco Foscato
- Department
of Chemistry, University of Bergen, Allégaten 41, N-5007 Bergen, Norway
| | - Giovanni Occhipinti
- Department
of Chemistry, University of Bergen, Allégaten 41, N-5007 Bergen, Norway
| | - Karl W. Törnroos
- Department
of Chemistry, University of Bergen, Allégaten 41, N-5007 Bergen, Norway
| | - Vidar R. Jensen
- Department
of Chemistry, University of Bergen, Allégaten 41, N-5007 Bergen, Norway
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21
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Butilkov D, Frenklah A, Rozenberg I, Kozuch S, Lemcoff NG. Highly Selective Olefin Metathesis with CAAC-Containing Ruthenium Benzylidenes. ACS Catal 2017. [DOI: 10.1021/acscatal.7b02409] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Danielle Butilkov
- Chemistry Department, Ben-Gurion University of the Negev, Beer-Sheva, 84105, Israel
| | - Alexander Frenklah
- Chemistry Department, Ben-Gurion University of the Negev, Beer-Sheva, 84105, Israel
| | - Illya Rozenberg
- Chemistry Department, Ben-Gurion University of the Negev, Beer-Sheva, 84105, Israel
| | - Sebastian Kozuch
- Chemistry Department, Ben-Gurion University of the Negev, Beer-Sheva, 84105, Israel
| | - N. Gabriel Lemcoff
- Chemistry Department, Ben-Gurion University of the Negev, Beer-Sheva, 84105, Israel
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22
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Freudenberg J, Poppe S, Binder WH. Precision polymers containing main-chain-amino acids: ADMET polymerization and crystallization. RSC Adv 2017. [DOI: 10.1039/c7ra10485e] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
New PE-type precision oligomers displaying different amino acids (chiral/achiral, polar/non-polar) placed at every 19th carbon atom are presented.
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Affiliation(s)
- Jan Freudenberg
- Martin Luther University Halle-Wittenberg
- Faculty of Natural Sciences II
- Chair of Macromolecular Chemistry
- D-06120 Halle
- Germany
| | - Silvio Poppe
- Martin Luther University Halle-Wittenberg
- Faculty of Natural Sciences II
- Chair of Organic Chemistry
- D-06120 Halle
- Germany
| | - Wolfgang H. Binder
- Martin Luther University Halle-Wittenberg
- Faculty of Natural Sciences II
- Chair of Macromolecular Chemistry
- D-06120 Halle
- Germany
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23
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Wu Q, Wang L, Jin R, Kang C, Bian Z, Du Z, Ma X, Guo H, Gao L. Nickel-Catalyzed Allylic C(sp2)-H Activation: Stereoselective Allyl Isomerization and Regiospecific Allyl Arylation of Allylarenes. European J Org Chem 2016. [DOI: 10.1002/ejoc.201600955] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Affiliation(s)
- Qiang Wu
- State Key Laboratory of Polymer Physics and Chemistry; Changchun Institute of Applied Chemistry; Chinese Academy of Sciences; 5625 Renmin Street 130022 Changchun China
- University of Chinese Academy of Sciences; 100049 Beijing China
| | - Lanlan Wang
- State Key Laboratory of Polymer Physics and Chemistry; Changchun Institute of Applied Chemistry; Chinese Academy of Sciences; 5625 Renmin Street 130022 Changchun China
- University of Chinese Academy of Sciences; 100049 Beijing China
| | - Rizhe Jin
- State Key Laboratory of Polymer Physics and Chemistry; Changchun Institute of Applied Chemistry; Chinese Academy of Sciences; 5625 Renmin Street 130022 Changchun China
| | - Chuanqing Kang
- State Key Laboratory of Polymer Physics and Chemistry; Changchun Institute of Applied Chemistry; Chinese Academy of Sciences; 5625 Renmin Street 130022 Changchun China
| | - Zheng Bian
- State Key Laboratory of Polymer Physics and Chemistry; Changchun Institute of Applied Chemistry; Chinese Academy of Sciences; 5625 Renmin Street 130022 Changchun China
| | - Zhijun Du
- State Key Laboratory of Polymer Physics and Chemistry; Changchun Institute of Applied Chemistry; Chinese Academy of Sciences; 5625 Renmin Street 130022 Changchun China
| | - Xiaoye Ma
- State Key Laboratory of Polymer Physics and Chemistry; Changchun Institute of Applied Chemistry; Chinese Academy of Sciences; 5625 Renmin Street 130022 Changchun China
| | - Haiquan Guo
- State Key Laboratory of Polymer Physics and Chemistry; Changchun Institute of Applied Chemistry; Chinese Academy of Sciences; 5625 Renmin Street 130022 Changchun China
| | - Lianxun Gao
- State Key Laboratory of Polymer Physics and Chemistry; Changchun Institute of Applied Chemistry; Chinese Academy of Sciences; 5625 Renmin Street 130022 Changchun China
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24
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Martinez-Erro S, Sanz-Marco A, Bermejo Gómez A, Vázquez-Romero A, Ahlquist MSG, Martín-Matute B. Base-Catalyzed Stereospecific Isomerization of Electron-Deficient Allylic Alcohols and Ethers through Ion-Pairing. J Am Chem Soc 2016; 138:13408-13414. [PMID: 27636591 DOI: 10.1021/jacs.6b08350] [Citation(s) in RCA: 67] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
A mild base-catalyzed strategy for the isomerization of allylic alcohols and allylic ethers has been developed. Experimental and computational investigations indicate that transition metal catalysts are not required when basic additives are present. As in the case of using transition metals under basic conditions, the isomerization catalyzed solely by base also follows a stereospecific pathway. The reaction is initiated by a rate-limiting deprotonation. Formation of an intimate ion pair between an allylic anion and the conjugate acid of the base results in efficient transfer of chirality. Through this mechanism, stereochemical information contained in the allylic alcohols is transferred to the ketone products. The stereospecific isomerization is also applicable for the first time to allylic ethers, yielding synthetically valuable enantioenriched (up to 97% ee) enol ethers.
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Affiliation(s)
- Samuel Martinez-Erro
- Department of Organic Chemistry, Stockholm University , Stockholm SE-10691, Sweden
| | - Amparo Sanz-Marco
- Department of Organic Chemistry, Stockholm University , Stockholm SE-10691, Sweden
| | | | - Ana Vázquez-Romero
- Department of Organic Chemistry, Stockholm University , Stockholm SE-10691, Sweden
| | - Mårten S G Ahlquist
- Division of Theoretical Chemistry & Biology, School of Biotechnology, KTH Royal Institute of Technology , Stockholm SE-10691, Sweden
| | - Belén Martín-Matute
- Department of Organic Chemistry, Stockholm University , Stockholm SE-10691, Sweden
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25
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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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26
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Bidange J, Fischmeister C, Bruneau C. Ethenolysis: A Green Catalytic Tool to Cleave Carbon-Carbon Double Bonds. Chemistry 2016; 22:12226-44. [PMID: 27359344 DOI: 10.1002/chem.201601052] [Citation(s) in RCA: 85] [Impact Index Per Article: 10.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2016] [Indexed: 11/08/2022]
Abstract
Remarkable innovations have been made in the field of olefin metathesis due to the design and preparation of new catalysts. Ethenolysis, which is cross-metathesis with ethylene, represents one catalytic transformation that has been used with the purpose of cleaving internal carbon-carbon double bonds. The objectives were either the ring opening of cyclic olefins to produce dienes or the shortening of unsaturated hydrocarbon chains to degrade polymers or generate valuable shorter terminal olefins in a controlled manner. This Review summarizes several aspects of this reaction: the catalysts, their degradation in the presence of ethylene, some parameters driving their productivity, the side reactions, and the applications of ethenolysis in organic synthesis and in potential industrial applications.
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Affiliation(s)
- Johan Bidange
- UMR 6226, CNRS, Université de Rennes 1, Institut des Sciences Chimiques de Rennes, Organometallics, Materials and Catalysis, Centre for Catalysis and Green Chemistry, Campus de Beaulieu, 263 avenue du général Leclerc, 35042, Rennes Cedex, France
| | - Cédric Fischmeister
- UMR 6226, CNRS, Université de Rennes 1, Institut des Sciences Chimiques de Rennes, Organometallics, Materials and Catalysis, Centre for Catalysis and Green Chemistry, Campus de Beaulieu, 263 avenue du général Leclerc, 35042, Rennes Cedex, France
| | - Christian Bruneau
- UMR 6226, CNRS, Université de Rennes 1, Institut des Sciences Chimiques de Rennes, Organometallics, Materials and Catalysis, Centre for Catalysis and Green Chemistry, Campus de Beaulieu, 263 avenue du général Leclerc, 35042, Rennes Cedex, France.
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27
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Selective hydrogenation of nitriles to secondary amines catalyzed by a pyridyl-functionalized and alkenyl-tethered NHC–Ru(II) complex. J Organomet Chem 2016. [DOI: 10.1016/j.jorganchem.2015.12.034] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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28
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Supported Catalysts Useful in Ring-Closing Metathesis, Cross Metathesis, and Ring-Opening Metathesis Polymerization. Polymers (Basel) 2016; 8:polym8040140. [PMID: 30979231 PMCID: PMC6432279 DOI: 10.3390/polym8040140] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2016] [Revised: 04/01/2016] [Accepted: 04/07/2016] [Indexed: 11/17/2022] Open
Abstract
Ruthenium and molybdenum catalysts are widely used in synthesis of both small molecules and macromolecules. While major developments have led to new increasingly active catalysts that have high functional group compatibility and stereoselectivity, catalyst/product separation, catalyst recycling, and/or catalyst residue/product separation remain an issue in some applications of these catalysts. This review highlights some of the history of efforts to address these problems, first discussing the problem in the context of reactions like ring-closing metathesis and cross metathesis catalysis used in the synthesis of low molecular weight compounds. It then discusses in more detail progress in dealing with these issues in ring opening metathesis polymerization chemistry. Such approaches depend on a biphasic solid/liquid or liquid separation and can use either always biphasic or sometimes biphasic systems and approaches to this problem using insoluble inorganic supports, insoluble crosslinked polymeric organic supports, soluble polymeric supports, ionic liquids and fluorous phases are discussed.
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29
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Affiliation(s)
- Renat Kadyrov
- Evonik Resource Efficiency GmbH; Rodenbacher Chaussee 4 63457 Hanau-Wolfgang Germany), Fax: (+49) 6181-59-2417
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30
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Suriboot J, Hobbs CE, Guzman W, Bazzi HS, Bergbreiter DE. Polyethylene as a Cosolvent and Catalyst Support in Ring-Opening Metathesis Polymerization. Macromolecules 2015. [DOI: 10.1021/acs.macromol.5b01141] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Affiliation(s)
- Jakkrit Suriboot
- Department of Chemistry, Texas A&M University, College Station, Texas 77840, United States
| | - Christopher E. Hobbs
- Department of Chemistry, Texas A&M University, Kingsville, Texas 78363-8202, United States
| | - William Guzman
- Department of Chemistry, Texas A&M University, College Station, Texas 77840, United States
| | - Hassan S. Bazzi
- Department of Chemistry, Texas A&M University at Qatar, P.O. Box 23874, Doha, Qatar
| | - David E. Bergbreiter
- Department of Chemistry, Texas A&M University, College Station, Texas 77840, United States
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31
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Catalytic isomerization of allyl functionalities in water by hexaaquaruthenium(II) tosylate. Inorganica Chim Acta 2015. [DOI: 10.1016/j.ica.2015.07.001] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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32
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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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33
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Biswas S. Mechanistic Understanding of Transition-Metal-Catalyzed Olefin Isomerization: Metal-Hydride Insertion-Elimination vs. π-Allyl Pathways. COMMENT INORG CHEM 2015. [DOI: 10.1080/02603594.2015.1059325] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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34
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Yip SYY, Aïssa C. Isomerization of Olefins Triggered by Rhodium-Catalyzed C-H Bond Activation: Control of Endocyclic β-Hydrogen Elimination. Angew Chem Int Ed Engl 2015; 54:6870-3. [PMID: 25907465 PMCID: PMC4497606 DOI: 10.1002/anie.201500596] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2015] [Revised: 03/12/2015] [Indexed: 11/07/2022]
Abstract
Five-membered metallacycles are typically reluctant to undergo endocyclic β-hydrogen elimination. The rhodium-catalyzed isomerization of 4-pentenals into 3-pentenals occurs through this elementary step and cleavage of two C-H bonds, as supported by deuterium-labeling studies. The reaction proceeds without decarbonylation, leads to trans olefins exclusively, and tolerates other olefins normally prone to isomerization. Endocyclic β-hydrogen elimination can also be controlled in an enantiodivergent reaction on a racemic mixture.
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Affiliation(s)
- Stephanie Y Y Yip
- Department of Chemistry, University of Liverpool, Crown Street, L69 7ZD (UK)
| | - Christophe Aïssa
- Department of Chemistry, University of Liverpool, Crown Street, L69 7ZD (UK).
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35
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Yip SYY, Aïssa C. Isomerization of Olefins Triggered by Rhodium-Catalyzed CH Bond Activation: Control of Endocyclic β-Hydrogen Elimination. Angew Chem Int Ed Engl 2015. [DOI: 10.1002/ange.201500596] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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36
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Ortmann P, Lemke TA, Mecking S. Long-Spaced Polyamides: Elucidating the Gap between Polyethylene Crystallinity and Hydrogen Bonding. Macromolecules 2015. [DOI: 10.1021/acs.macromol.5b00060] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Affiliation(s)
- Patrick Ortmann
- Chair of
Chemical Materials
Science, Department of Chemistry, University of Konstanz, Universitätsstrasse
10, D-78457 Konstanz, Germany
| | - Tobias A. Lemke
- Chair of
Chemical Materials
Science, Department of Chemistry, University of Konstanz, Universitätsstrasse
10, D-78457 Konstanz, Germany
| | - Stefan Mecking
- Chair of
Chemical Materials
Science, Department of Chemistry, University of Konstanz, Universitätsstrasse
10, D-78457 Konstanz, Germany
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37
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Motwani HV, De Rosa M, Odell LR, Hallberg A, Larhed M. Aspartic protease inhibitors containing tertiary alcohol transition-state mimics. Eur J Med Chem 2014; 90:462-90. [PMID: 25481814 DOI: 10.1016/j.ejmech.2014.11.036] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2014] [Revised: 11/12/2014] [Accepted: 11/19/2014] [Indexed: 11/30/2022]
Abstract
Aspartic proteases (APs) are a class of enzymes engaged in the proteolytic digestion of peptide substrates. APs play important roles in physiological and infectious pathways, making them plausible drug targets. For instance in the treatment of HIV infections, access to an efficient combination of protease and reverse transcriptase inhibitors have changed a terminal illness to a chronic but manageable disease. However, the benefits have been limited due to the emergence of drug resistant viral strains, poor pharmacokinetic properties of peptidomimetic inhibitors and adverse effects associated with the treatment. In the 1980s, D. Rich and co-workers proposed a novel strategy for the development of AP inhibitors by replacing the secondary hydroxyl group with a tertiary alcohol as part of the transition state (TS) mimicking moiety. This strategy has been extensively explored over the last decade with a common belief that masking of the polar group, e.g. by intramolecular hydrogen bonding, has the potential to enhance transcellular transport. This is the first review presenting the advances of AP inhibitors comprising a tertiary hydroxyl group. The inhibitors have been classified into different tert-hydroxy TS mimics and their design strategies, synthesis, biological activities, structure-activity-relationships and X-ray structures are discussed.
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Affiliation(s)
- Hitesh V Motwani
- Department of Medicinal Chemistry, Organic Pharmaceutical Chemistry, BMC, Uppsala University, P.O. Box 574, SE-751 23 Uppsala, Sweden
| | - Maria De Rosa
- Department of Medicinal Chemistry, Organic Pharmaceutical Chemistry, BMC, Uppsala University, P.O. Box 574, SE-751 23 Uppsala, Sweden
| | - Luke R Odell
- Department of Medicinal Chemistry, Organic Pharmaceutical Chemistry, BMC, Uppsala University, P.O. Box 574, SE-751 23 Uppsala, Sweden
| | - Anders Hallberg
- Department of Medicinal Chemistry, Organic Pharmaceutical Chemistry, BMC, Uppsala University, P.O. Box 574, SE-751 23 Uppsala, Sweden
| | - Mats Larhed
- Department of Medicinal Chemistry, Organic Pharmaceutical Chemistry, BMC, Uppsala University, P.O. Box 574, SE-751 23 Uppsala, Sweden.
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38
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Tarus B, Bertrand H, Zedda G, Di Primo C, Quideau S, Slama-Schwok A. Structure-based design of novel naproxen derivatives targeting monomeric nucleoprotein of Influenza A virus. J Biomol Struct Dyn 2014; 33:1899-912. [PMID: 25333630 PMCID: PMC4548311 DOI: 10.1080/07391102.2014.979230] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
The nucleoprotein (NP) binds the viral RNA genome as oligomers assembled with the polymerase in a ribonucleoprotein complex required for transcription and replication of influenza A virus. Novel antiviral candidates targeting the nucleoprotein either induced higher order oligomers or reduced NP oligomerization by targeting the oligomerization loop and blocking its insertion into adjacent nucleoprotein subunit. In this study, we used a different structure-based approach to stabilize monomers of the nucleoprotein by drugs binding in its RNA-binding groove. We recently identified naproxen as a drug competing with RNA binding to NP with antiinflammatory and antiviral effects against influenza A virus. Here, we designed novel derivatives of naproxen by fragment extension for improved binding to NP. Molecular dynamics simulations suggested that among these derivatives, naproxen A and C0 were most promising. Their chemical synthesis is described. Both derivatives markedly stabilized NP monomer against thermal denaturation. Naproxen C0 bound tighter to NP than naproxen at a binding site predicted by MD simulations and shown by competition experiments using wt NP or single-point mutants as determined by surface plasmon resonance. MD simulations suggested that impeded oligomerization and stabilization of monomeric NP is likely to be achieved by drugs binding in the RNA grove and inducing close to their binding site conformational changes of key residues hosting the oligomerization loop as observed for the naproxen derivatives. Naproxen C0 is a potential antiviral candidate blocking influenza nucleoprotein function.
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Affiliation(s)
- Bogdan Tarus
- a Virologie et Immunologie Moléculaires, UR892, Institut National de la Recherche Agronomique , Domaine de Vilvert, 78350 Jouy en Josas , France
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39
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Nagarkar AA, Kilbinger AFM. End functional ROMP polymers via degradation of a ruthenium Fischer type carbene. Chem Sci 2014. [DOI: 10.1039/c4sc02242d] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
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40
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De Rosa M, Unge J, Motwani HV, Rosenquist Å, Vrang L, Wallberg H, Larhed M. Synthesis of P1'-functionalized macrocyclic transition-state mimicking HIV-1 protease inhibitors encompassing a tertiary alcohol. J Med Chem 2014; 57:6444-57. [PMID: 25054811 DOI: 10.1021/jm500434q] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
Seven novel tertiary alcohol containing linear HIV-1 protease inhibitors (PIs), decorated at the para position of the benzyl group in the P1' side with (hetero)aromatic moieties, were synthesized and biologically evaluated. To study the inhibition and antiviral activity effect of P1-P3 macrocyclization, 14- and 15-membered macrocyclic PIs were prepared by ring-closing metathesis of the corresponding linear PIs. The macrocycles were more active than the linear precursors and compound 10f, with a 2-thiazolyl group in the P1' position, was the most potent PI of this new series (Ki 2.2 nM, EC50 0.2 μM). Co-crystallized complexes of both linear and macrocyclic PIs with the HIV-1 protease enzyme were prepared and analyzed.
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Affiliation(s)
- Maria De Rosa
- Department of Medicinal Chemistry, Organic Pharmaceutical Chemistry, BMC, Uppsala University , P.O. Box 574, SE-751 23 Uppsala, Sweden
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41
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Schulz MD, Atkinson MBJ, Elsey RJ, Thuo MM. Copper(I) halides inhibit olefin isomerized by-products from phosphine-based Grubbs’ metathesis catalysts in polar protic solvents. TRANSIT METAL CHEM 2014. [DOI: 10.1007/s11243-014-9858-1] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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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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43
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Manzini S, Poater A, Nelson DJ, Cavallo L, Slawin AMZ, Nolan SP. Insights into the Decomposition of Olefin Metathesis Precatalysts. Angew Chem Int Ed Engl 2014. [DOI: 10.1002/ange.201403770] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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44
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Manzini S, Poater A, Nelson DJ, Cavallo L, Slawin AMZ, Nolan SP. Insights into the Decomposition of Olefin Metathesis Precatalysts. Angew Chem Int Ed Engl 2014; 53:8995-9. [DOI: 10.1002/anie.201403770] [Citation(s) in RCA: 53] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2014] [Revised: 04/25/2014] [Indexed: 11/06/2022]
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Occhipinti G, Koudriavtsev V, Törnroos KW, Jensen VR. Theory-assisted development of a robust and Z-selective olefin metathesis catalyst. Dalton Trans 2014; 43:11106-17. [PMID: 24788021 DOI: 10.1039/c4dt00409d] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
DFT calculations have predicted a new, highly Z-selective ruthenium-based olefin metathesis catalyst that is considerably more robust than the recently reported (SIMes)(Cl)(RS)RuCH(o-OiPrC6H4) (3a, SIMes = 1,3-dimesityl-4,5-dihydroimidazol-2-ylidene, R = 2,4,6-triphenylbenzene) [J. Am. Chem. Soc., 2013, 135, 3331]. Replacing the chloride of 3a by an isocyanate ligand to give 5a was predicted to increase the stability of the complex considerably, at the same time moderately improving the Z-selectivity. Compound 5a is easily prepared in a two-step synthesis starting from the Hoveyda-Grubbs second-generation catalyst 3. In agreement with the calculations, the isocyanate-substituted 5a appears to be somewhat more Z-selective than the chloride analogue 3a. More importantly, 5a can be used in air, with unpurified and non-degassed substrates and solvents, and in the presence of acids. These are traits that are unprecedented among highly Z-selective olefin metathesis catalysts and also very promising with respect to applications of the new catalyst.
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Affiliation(s)
- Giovanni Occhipinti
- Department of Chemistry, University of Bergen, Allégaten 41, 5007 Bergen, Norway.
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Knapp SMM, Shaner SE, Kim D, Shopov DY, Tendler JA, Pudalov DM, Chianese AR. Mechanistic Studies of Alkene Isomerization Catalyzed by CCC-Pincer Complexes of Iridium. Organometallics 2014. [DOI: 10.1021/om400786r] [Citation(s) in RCA: 55] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Spring Melody M. Knapp
- Department of Chemistry, Colgate University, 13 Oak Drive, Hamilton, New York 13346, United States
| | - Sarah E. Shaner
- Department of Chemistry, Colgate University, 13 Oak Drive, Hamilton, New York 13346, United States
| | - Daniel Kim
- Department of Chemistry, Colgate University, 13 Oak Drive, Hamilton, New York 13346, United States
| | - Dimitar Y. Shopov
- Department of Chemistry, Colgate University, 13 Oak Drive, Hamilton, New York 13346, United States
| | - Jennifer A. Tendler
- Department of Chemistry, Colgate University, 13 Oak Drive, Hamilton, New York 13346, United States
| | - David M. Pudalov
- Department of Chemistry, Colgate University, 13 Oak Drive, Hamilton, New York 13346, United States
| | - Anthony R. Chianese
- Department of Chemistry, Colgate University, 13 Oak Drive, Hamilton, New York 13346, United States
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47
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Manzini S, Poater A, Nelson DJ, Cavallo L, Nolan SP. How phenyl makes a difference: mechanistic insights into the ruthenium(ii)-catalysed isomerisation of allylic alcohols. Chem Sci 2014. [DOI: 10.1039/c3sc52612g] [Citation(s) in RCA: 56] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023] Open
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48
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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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49
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Lummiss JAM, Botti AGG, Fogg DE. Isotopic probes for ruthenium-catalyzed olefin metathesis. Catal Sci Technol 2014. [DOI: 10.1039/c4cy01118j] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
13C-labelled Grubbs catalysts, RuCl2(L)(PCy3)(13CHR) (R = H, Ph), pinpoint the fate of the methylidene (benzylidene) moiety during metathesis and deactivation.
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Affiliation(s)
- Justin A. M. Lummiss
- Center for Catalysis Research & Innovation
- Chemistry Department
- University of Ottawa
- Ottawa, Canada
| | - Adrian G. G. Botti
- Center for Catalysis Research & Innovation
- Chemistry Department
- University of Ottawa
- Ottawa, Canada
| | - Deryn E. Fogg
- Center for Catalysis Research & Innovation
- Chemistry Department
- University of Ottawa
- Ottawa, Canada
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50
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Nelson DJ, Percy JM. Does the rate of competing isomerisation during alkene metathesis depend on pre-catalyst initiation rate? Dalton Trans 2014; 43:4674-9. [DOI: 10.1039/c4dt00007b] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
Detailed kinetic experiments reveal that the rates of competing isomerisation processes in alkene metathesis reactions are independent of pre-catalyst initiation rate, but are reduced by the presence of phosphine.
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Affiliation(s)
- David J. Nelson
- WestCHEM/Department of Pure & Applied Chemistry
- University of Strathclyde
- Glasgow, UK
| | - Jonathan M. Percy
- WestCHEM/Department of Pure & Applied Chemistry
- University of Strathclyde
- Glasgow, UK
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