1
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Hyun SM, Marathianos A, Boeck PT, Ghiviriga I, Lester DW, Sumerlin BS, Veige AS. Influence of solvent on cyclic polynorbornene tacticity. Chem Commun (Camb) 2023; 59:13993-13996. [PMID: 37938062 DOI: 10.1039/d3cc04167k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2023]
Abstract
Tacticity is critical to polymer properties. The influence of solvent on tacticity in the catalytic synthesis of cyclic polynorbornene (c-PNB) is reported. In toluene cis,syndiotactic c-PNB forms; in THF, cis,syn/iso c-PNB forms.
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Affiliation(s)
- Sung-Min Hyun
- University of Florida, Department of Chemistry, Center for Catalysis, P.O. Box 117200, Gainesville, FL, 32611, USA.
| | - Arkadios Marathianos
- Polymer Characterization Research Technology Platform, University of Warwick, Coventry CV4 7AL, UK
| | - Parker T Boeck
- University of Florida, Department of Chemistry, Center for Catalysis, P.O. Box 117200, Gainesville, FL, 32611, USA.
- University of Florida, Department of Chemistry, George and Josephine Butler Polymer Research Laboratory, Center for Macromolecular Science and Engineering, Gainesville, FL 32611, USA
| | - Ion Ghiviriga
- University of Florida, Department of Chemistry, Center for Catalysis, P.O. Box 117200, Gainesville, FL, 32611, USA.
| | - Daniel W Lester
- Polymer Characterization Research Technology Platform, University of Warwick, Coventry CV4 7AL, UK
| | - Brent S Sumerlin
- University of Florida, Department of Chemistry, George and Josephine Butler Polymer Research Laboratory, Center for Macromolecular Science and Engineering, Gainesville, FL 32611, USA
| | - Adam S Veige
- University of Florida, Department of Chemistry, Center for Catalysis, P.O. Box 117200, Gainesville, FL, 32611, USA.
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2
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Levenson AM, Morrison CM, Huang PR, Wang TW, Carter-Schwendler Z, Golder MR. Ancillary Ligand Lability Improves Control in Cyclic Ruthenium Benzylidene Initiated Ring-Expansion Metathesis Polymerizations. ACS Macro Lett 2023; 12:1286-1292. [PMID: 37695322 DOI: 10.1021/acsmacrolett.3c00520] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/12/2023]
Abstract
The synthesis of well-defined cyclic polymers is crucial to exploring applications spanning engineering, energy, and biomedicine. These materials lack chain-ends and are therefore imbued with unique bulk properties. Despite recent advancements, the general methodology for controlled cyclic polymer synthesis via ring-expansion metathesis polymerization (REMP) remains challenging. Low initiator activity leads to high molar mass polymers at short reaction times that subsequently "evolve" to smaller polymeric products. In this work, we demonstrate that in situ addition of pyridine to the tethered ruthenium-benzylidene REMP initiator CB6 increases ancillary ligand lability to synthesize controlled and low dispersity cyclic poly(norbornene) on a short time scale without relying on molar mass evolution events.
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Affiliation(s)
- Adelaide M Levenson
- Department of Chemistry, University of Washington, Seattle, Washington 98195, United States
| | - Christine M Morrison
- Department of Chemistry, University of Washington, Seattle, Washington 98195, United States
| | - Pin-Ruei Huang
- Department of Chemistry, University of Washington, Seattle, Washington 98195, United States
| | - Teng-Wei Wang
- Department of Chemistry, University of Washington, Seattle, Washington 98195, United States
| | - Zak Carter-Schwendler
- Department of Chemistry, University of Washington, Seattle, Washington 98195, United States
| | - Matthew R Golder
- Department of Chemistry, University of Washington, Seattle, Washington 98195, United States
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3
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Nomura K, Mekcham S. Organometallic complexes of vanadium and their reactions. ADVANCES IN ORGANOMETALLIC CHEMISTRY 2023. [DOI: 10.1016/bs.adomc.2022.10.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
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4
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A mechanistic DFT study of Z-selective ring-opening metathesis polymerization by MAP catalysts. MOLECULAR CATALYSIS 2022. [DOI: 10.1016/j.mcat.2022.112418] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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5
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Quach PK, Hsu JH, Keresztes I, Fors BP, Lambert TH. Metal-Free Ring-Opening Metathesis Polymerization with Hydrazonium Initiators. Angew Chem Int Ed Engl 2022; 61:e202203344. [PMID: 35302707 DOI: 10.1002/anie.202203344] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2022] [Indexed: 12/13/2022]
Abstract
The ring-opening metathesis polymerization (ROMP) of cyclopropenes using hydrazonium initiators is described. The initiators, which are formed by the condensation of 2,3-diazabicyclo[2.2.2]octane and an aldehyde, polymerize cyclopropene monomers by a sequence of [3+2] cycloaddition and cycloreversion reactions. This process generates short chain polyolefins (Mn ≤9.4 kg mol-1 ) with relatively low dispersities (Đ≤1.4). The optimized conditions showed efficiency comparable to that achieved with Grubbs' 2nd generation catalyst for the polymerization of 3-methyl-3-phenylcyclopropene. A positive correlation between monomer to initiator ratio and degree of polymerization was revealed through NMR spectroscopy.
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Affiliation(s)
- Phong K Quach
- Department of Chemistry and Chemical Biology, Cornell University, 122 Baker Laboratory, Ithaca, NY 14853, USA
| | - Jesse H Hsu
- Department of Chemistry and Chemical Biology, Cornell University, 122 Baker Laboratory, Ithaca, NY 14853, USA
| | - Ivan Keresztes
- Department of Chemistry and Chemical Biology, Cornell University, 122 Baker Laboratory, Ithaca, NY 14853, USA
| | - Brett P Fors
- Department of Chemistry and Chemical Biology, Cornell University, 122 Baker Laboratory, Ithaca, NY 14853, USA
| | - Tristan H Lambert
- Department of Chemistry and Chemical Biology, Cornell University, 122 Baker Laboratory, Ithaca, NY 14853, USA
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6
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Quach PK, Hsu JH, Keresztes I, Fors BP, Lambert TH. Metal–Free Ring–Opening Metathesis Polymerization with Hydrazonium Initiators. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202203344] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Phong K Quach
- Cornell University Chemistry and Chemical Biology 14853 Ithaca UNITED STATES
| | - Jesse H Hsu
- Cornell University Chemistry and Chemical Biology 14853 Ithaca UNITED STATES
| | - Ivan Keresztes
- Cornell University Chemistry and Chemical Biology 14853 Ithaca UNITED STATES
| | - Brett P Fors
- Cornell University Chemistry and Chemical Biology 14853 Ithaca UNITED STATES
| | - Tristan Hayes Lambert
- Cornell University Department of Chemistry & Chemical Biology Baker Laboratory 14853 Ithaca UNITED STATES
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7
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Wang XL, Chiang NY, Peng JJ, Yu L, Xu LJ, Yang HR, Jin BY, Zhang P, Lai YY, Li Z, Lai GQ, Luh TY. A Fischer-Type Ruthenium Carbene Complex as a Metathesis Catalyst for the Synthesis of Enol Ethers. J Org Chem 2021; 86:17629-17639. [PMID: 34846148 DOI: 10.1021/acs.joc.1c01741] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The Grubbs G-I or G-II catalyst gives the ruthenium ethoxy carbene complex, which catalyzes ring-opening cross metathesis (ROCM) of a strained cyclic alkene to give a diene where one of the two alkene moieties in the product contains an ethoxy substituent. No polymeric products are detected. Hydrocarbons such as parent norbornene or substituted cyclopropenes can proceed with the reaction smoothly. Tertiary amines, N-alkylimides, esters, and aryl or alkyl bromides remain intact under the reaction conditions. In addition to vinyl ethers, vinylic esters can also be used. The time required to reach a 50% yield of the ROCM product t50 varies from 0.01 to 140 h depending on the strain and nucleophilicity of the double bond. Anchimeric participation of an electron-rich group would result in significant enhancement of the reactivity, and the t50 could be as short as several minutes. A similar substrate without such a neighboring group shows a much slower rate. An exo-norborne derivative reacts much faster than the corresponding endo-isomer. Alkenes with poor nucleophilicity are less favored for the ROCM process, so is less strained cyclooctene.
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Affiliation(s)
- Xia-Lin Wang
- Key Laboratory of Organosilicon Chemistry and Material Technology of Ministry of Education, Hangzhou Normal University, Hangzhou 311121, China
| | | | - Jian-Jhih Peng
- Department of Chemistry, National Taiwan University, Taipei 10617, Taiwan
| | - Lei Yu
- Key Laboratory of Organosilicon Chemistry and Material Technology of Ministry of Education, Hangzhou Normal University, Hangzhou 311121, China
| | - Li-Jun Xu
- Key Laboratory of Organosilicon Chemistry and Material Technology of Ministry of Education, Hangzhou Normal University, Hangzhou 311121, China
| | - Hau-Ren Yang
- Institute of Polymer Science and Technology, National Taiwan University, Taipei 10617, Taiwan
| | - Bih-Yaw Jin
- Department of Chemistry, National Taiwan University, Taipei 10617, Taiwan
| | - Pinglu Zhang
- Key Laboratory of Organosilicon Chemistry and Material Technology of Ministry of Education, Hangzhou Normal University, Hangzhou 311121, China
| | - Yu-Ying Lai
- Institute of Polymer Science and Technology, National Taiwan University, Taipei 10617, Taiwan
| | - Ze Li
- Key Laboratory of Organosilicon Chemistry and Material Technology of Ministry of Education, Hangzhou Normal University, Hangzhou 311121, China
| | - Guo-Qiao Lai
- Key Laboratory of Organosilicon Chemistry and Material Technology of Ministry of Education, Hangzhou Normal University, Hangzhou 311121, China
| | - Tien-Yau Luh
- Department of Chemistry, National Taiwan University, Taipei 10617, Taiwan
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8
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Dawood KM, Nomura K. Recent Developments in Z‐Selective Olefin Metathesis Reactions by Molybdenum, Tungsten, Ruthenium, and Vanadium Catalysts. Adv Synth Catal 2021. [DOI: 10.1002/adsc.202001117] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Kamal M. Dawood
- Department of Chemistry Faculty of Science Cairo University Giza 12613 Egypt Tel. & Fax
| | - Kotohiro Nomura
- Department of Chemistry Faculty of Science Tokyo Metropolitan University, Hachioji Tokyo 192-0397 Japan
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9
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Elling BR, Su JK, Xia Y. Polymerization of Cyclopropenes: Taming the Strain for the Synthesis of Controlled and Sequence-Regulated Polymers. Acc Chem Res 2021; 54:356-365. [PMID: 33371668 DOI: 10.1021/acs.accounts.0c00638] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Cyclopropenes (CPEs) are highly strained cyclic olefins, yet there are surprisingly limited examples leveraging their high strain energy for polymerization. In the past, attempts had been made to polymerize CPEs via cationic and insertion polymerization, but side reactions often gave uncontrolled polymers with mixed backbone structures. Ring-opening metathesis polymerization (ROMP) represents an ideal strategy for polymerizing CPEs to access new types of polymers. The proximity of substituents to the olefin in the small framework of CPEs offers a modular handle to tune the kinetic barrier to propagation by the modulation of the substituents. While the first few studies focused on the homopolymerization of simple alkyl or phenyl disubstituted CPEs, we recently explored the metathesis of a wide range of CPEs with different substituents using Grubbs catalysts and discovered surprising and diverse reactivities that are contingent on the positions, sterics, and electronics of substituents. The observed reactivities ranged from living homopolymerization to catalyst deactivation to single addition to the catalyst without homopropagation. In particular, the exclusively single addition reactivity found in two families of CPEs, with either bis(methanol ester) or phenyl and methanol ester substituents at the allylic position, is unusual for any monomer and perhaps counterintuitive for highly strained cycles. These single-addition CPEs could, however, be copolymerized with low-strain cyclic olefins to generate perfectly alternating copolymers with controlled molecular weights and low dispersity and to introduce degradable backbone linkages. A single equivalent (relative to the active chain end) of such CPEs could also be added to the active chain end of living ROMP polymers to install functional terminal groups or during living ROMP to place single units of functional moieties or side chains at any desired chain locations in narrow-disperse homopolymers and block copolymers. This account summarizes the polymerization of CPEs with a focus on our journey to uncover the rich and unique metathesis reactivities of CPEs and their utility in synthesizing well-controlled and sequence-regulated polymers. It provides the first collective structure-metathesis reactivity relationships for CPEs in the context of polymer chemistry and an understanding of the interactions between the catalyst and the substituents of appended ring-opened CPEs. It may become clear from this Account that the exploration of strained cycles in polymer chemistry can be quite fruitful in discovering new chemistry and accessing new types of polymer materials.
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Affiliation(s)
- Benjamin R. Elling
- Department of Chemistry, Stanford University, Stanford, California 94305, United States
| | - Jessica K. Su
- Department of Chemistry, Stanford University, Stanford, California 94305, United States
| | - Yan Xia
- Department of Chemistry, Stanford University, Stanford, California 94305, United States
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10
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Musso JV, Benedikter M, Gebel P, Gramm V, Wang D, Schowner R, Buchmeiser MR. Cationic tungsten imido alkylidene N-heterocyclic carbene complexes for stereospecific ring-opening metathesis polymerization of norbornene derivatives. Polym Chem 2021. [DOI: 10.1039/d1py01158h] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
Cationic W alkylidene N-heterocyclic carbene complexes allow for the stereospecific ring-opening metathesis polymerization of norbornenes with high trans-iso- and high cis-syndiospecificity, respectively.
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Affiliation(s)
- Janis V. Musso
- Institute of Polymer Chemistry, University of Stuttgart, Pfaffenwaldring 55, D-70569 Stuttgart, Germany
| | - Mathis Benedikter
- Institute of Polymer Chemistry, University of Stuttgart, Pfaffenwaldring 55, D-70569 Stuttgart, Germany
| | - Paul Gebel
- Institute of Polymer Chemistry, University of Stuttgart, Pfaffenwaldring 55, D-70569 Stuttgart, Germany
| | - Vincent Gramm
- Institute of Polymer Chemistry, University of Stuttgart, Pfaffenwaldring 55, D-70569 Stuttgart, Germany
| | - Dongren Wang
- Institute of Polymer Chemistry, University of Stuttgart, Pfaffenwaldring 55, D-70569 Stuttgart, Germany
| | - Roman Schowner
- Institute of Polymer Chemistry, University of Stuttgart, Pfaffenwaldring 55, D-70569 Stuttgart, Germany
| | - Michael R. Buchmeiser
- Institute of Polymer Chemistry, University of Stuttgart, Pfaffenwaldring 55, D-70569 Stuttgart, Germany
- German Institutes of Textile and Fiber Research, Körschtalstr. 26, D-73770 Denkendorf, Germany
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11
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Zhang Z, Gao Y, Chen S, Wang J. Transition-Metal-Catalyzed Polymerization of Cyclopropenes. CHINESE J ORG CHEM 2021. [DOI: 10.6023/cjoc202010024] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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12
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Su JK, Lee SY, Elling BR, Xia Y. Ring-Opening Metathesis Polymerization of 1,1-Disubstituted 1-Methylcyclopropenes. Macromolecules 2020. [DOI: 10.1021/acs.macromol.0c00837] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Affiliation(s)
- Jessica K. Su
- Department of Chemistry, Stanford University, Stanford, California 94305, United States
| | - So Young Lee
- Department of Chemistry, Stanford University, Stanford, California 94305, United States
| | - Benjamin R. Elling
- Department of Chemistry, Stanford University, Stanford, California 94305, United States
| | - Yan Xia
- Department of Chemistry, Stanford University, Stanford, California 94305, United States
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13
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De Jesus Silva J, Ferreira MAB, Fedorov A, Sigman MS, Copéret C. Molecular-level insight in supported olefin metathesis catalysts by combining surface organometallic chemistry, high throughput experimentation, and data analysis. Chem Sci 2020; 11:6717-6723. [PMID: 33133485 PMCID: PMC7553044 DOI: 10.1039/d0sc02594a] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2020] [Accepted: 06/09/2020] [Indexed: 12/18/2022] Open
Abstract
A combination of high-throughput experimentation (HTE), surface organometallic chemistry (SOMC) and statistical data analysis provided the platform to analyze in situ silica-grafted Mo imido alkylidene catalysts based on a library of 35 phenols. Overall, these tools allowed for the identification of σ-donor electronic effects and dispersive interactions and as key drivers in a prototypical metathesis reaction, homodimerization of 1-nonene. Univariate and multivariate correlation analysis confirmed the categorization of the catalytic data into two groups, depending on the presence of aryl groups in ortho position of the phenol ligand. The initial activity (TOFin) was predominantly correlated to the σ-donor ability of the aryloxy ligands, while the overall catalytic performance (TON1 h) was mainly dependent on attractive dispersive interactions with the used phenol ligands featuring aryl ortho substituents and, in sharp contrast, repulsive dispersive interactions with phenol free of aryl ortho substituents. This work outlines a fast and efficient workflow of gaining molecular-level insight into supported metathesis catalysts and highlights σ-donor ability and noncovalent interactions as crucial properties for designing active d0 supported metathesis catalysts.
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Affiliation(s)
- Jordan De Jesus Silva
- Department of Chemistry and Applied Biosciences , ETH Zürich , Vladimir-Prelog-Weg 1 5 , CH 8093 Zürich , Switzerland . ;
| | - Marco A B Ferreira
- Department of Chemistry , University of Utah , 315 South 1400 East , Salt Lake City , Utah 84112 , USA .
- Centre for Excellence for Research in Sustainable Chemistry (CERSusChem) , Department of Chemistry , Federal University of São Carlos - UFSCar , Rodovia Washington Luís, Km 235, SP-310 , São Carlos , São Paulo 13565-905 , Brazil
| | - 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
| | - Matthew S Sigman
- Department of Chemistry , University of Utah , 315 South 1400 East , Salt Lake City , Utah 84112 , USA .
| | - Christophe Copéret
- Department of Chemistry and Applied Biosciences , ETH Zürich , Vladimir-Prelog-Weg 1 5 , CH 8093 Zürich , Switzerland . ;
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14
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Vicente R. C–C Bond Cleavages of Cyclopropenes: Operating for Selective Ring-Opening Reactions. Chem Rev 2020; 121:162-226. [DOI: 10.1021/acs.chemrev.0c00151] [Citation(s) in RCA: 69] [Impact Index Per Article: 17.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Affiliation(s)
- Rubén Vicente
- Facultad de Quı́mica, Departamento de Quı́mica Orgánica e Inorgánica, Instituto de Quı́mica Organometálica Enrique Moles, Universidad de Oviedo, 33006 Oviedo, Spain
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15
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Luh TY, Lin WY, Lai G. Determination of the Orientation of Pendants on Rigid-Rod Polymers. Chem Asian J 2020; 15:1808-1818. [PMID: 32314531 DOI: 10.1002/asia.202000370] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2020] [Indexed: 11/08/2022]
Abstract
Bis-norbornene and bis-cyclobutene with different kinds of linkers have been extensively used for the synthesis of double stranded ladderphanes under ruthenium- or molybdenum-catalyzed ring opening metathesis polymerization (ROMP) conditions. The key to the success relies on the selective formation of comb-like polynorbornenes or polycycloubtenes, where pendants are all aligned towards similar direction. This minireview summarizes various methods (chemical methods, spectroscopic means, and nonlinear optical measurements) for determining the comb-like conformations of pendants on these rigid-rod polymers. The approach is based on the proximal relationship between adjacent pendants. Interactions between these adjacent pendants would enable a change in chemical reactivity.
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Affiliation(s)
- Tien-Yau Luh
- Department of Chemistry, National Taiwan University, Taipei, 106, Taiwan
| | - Wei-Yu Lin
- Department of Medicinal and Applied Chemistry, Kaohsiung Medical University, Department of Medical Research, Kaohsiung Medical University Hospital, Kaohsiung, 807, Taiwan
| | - Guoqiao Lai
- Key Laboratory of Organosilicon Chemistry and Material, Technology of Ministry of Eduction,\, Hangzhou Normal University, Hangzhou, Zhejiang, 311121, China
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16
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Nomura K, Chaimongkolkunasin S. cis-Specific ring opening metathesis polymerisation (ROMP) of cyclic olefins using (pentafluorophenylimido)vanadium(v)-alkylidene, V(CHSiMe3)(NC6F5)[OC(CF3)3](PMe3)2. Catal Sci Technol 2020. [DOI: 10.1039/d0cy00938e] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
Highly cis-specific (Z selective) ring opening metathesis polymerisation of cycloheptene has been demonstrated using V(CHSiMe3)(NC6F5)[OC(CF3)3](PMe3)2.
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Affiliation(s)
- Kotohiro Nomura
- Department of Chemistry
- Tokyo Metropolitan University
- Tokyo 192-0397
- Japan
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17
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Li R, Li X, Zhang Y, Delawder AO, Colley ND, Whiting EA, Barnes JC. Diblock brush-arm star copolymers via a core-first/graft-from approach using γ-cyclodextrin and ROMP: a modular platform for drug delivery. Polym Chem 2020. [DOI: 10.1039/c9py01146c] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
Water-soluble diblock brush-arm star copolymers using γ-CD-based core-first ring-opening metathesis polymerization, allowing for anticancer drug delivery via host–guest interaction.
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Affiliation(s)
- Ruihan Li
- Department of Chemistry
- One Brookings Drive
- Washington University
- St Louis
- USA
| | - Xuesong Li
- Department of Chemistry
- One Brookings Drive
- Washington University
- St Louis
- USA
| | - Yipei Zhang
- Department of Chemistry
- One Brookings Drive
- Washington University
- St Louis
- USA
| | | | - Nathan D. Colley
- Department of Chemistry
- One Brookings Drive
- Washington University
- St Louis
- USA
| | - Emma A. Whiting
- Department of Chemistry
- One Brookings Drive
- Washington University
- St Louis
- USA
| | - Jonathan C. Barnes
- Department of Chemistry
- One Brookings Drive
- Washington University
- St Louis
- USA
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18
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Su JK, Jin Z, Zhang R, Lu G, Liu P, Xia Y. Tuning the Reactivity of Cyclopropenes from Living Ring-Opening Metathesis Polymerization (ROMP) to Single-Addition and Alternating ROMP. Angew Chem Int Ed Engl 2019; 58:17771-17776. [PMID: 31571344 DOI: 10.1002/anie.201909688] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2019] [Revised: 09/08/2019] [Indexed: 11/09/2022]
Abstract
Ring-opening metathesis polymerization (ROMP) has become one of the most important living polymerizations. Cyclopropenes (CPEs) remain underexplored for ROMP. Described here is that the simple swap of 1-methyl to 1-phenyl on 1-(benzoyloxymethyl)CPEs elicited strikingly different modes of reactivity, switching from living polymerization to either selective single-addition or living alternating ROMP. The distinct reactivity stems from differences in steric repulsions at the Ru alkylidene after CPE ring opening. Possible olefin or oxygen chelation from ring-opened CPE substituents was also observed to significantly affect the rate of propagation. These results demonstrate the versatility of CPEs as a new class of monomers for ROMP, provide mechanistic insights for designing new monomers with rare single-addition reactivity, and generate a new functionalizable alternating copolymer scaffold with controlled molecular weight and low dispersity.
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Affiliation(s)
- Jessica K Su
- Department of Chemistry, Stanford University, Stanford, CA, 94305, USA
| | - Zexin Jin
- Department of Chemistry, Stanford University, Stanford, CA, 94305, USA
| | - Rui Zhang
- Department of Chemistry, University of Pittsburgh, Pittsburgh, PA, 15260, USA
| | - Gang Lu
- Department of Chemistry, University of Pittsburgh, Pittsburgh, PA, 15260, USA
| | - Peng Liu
- Department of Chemistry, University of Pittsburgh, Pittsburgh, PA, 15260, USA
| | - Yan Xia
- Department of Chemistry, Stanford University, Stanford, CA, 94305, USA
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19
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Su JK, Jin Z, Zhang R, Lu G, Liu P, Xia Y. Tuning the Reactivity of Cyclopropenes from Living Ring‐Opening Metathesis Polymerization (ROMP) to Single‐Addition and Alternating ROMP. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201909688] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Jessica K. Su
- Department of Chemistry Stanford University Stanford CA 94305 USA
| | - Zexin Jin
- Department of Chemistry Stanford University Stanford CA 94305 USA
| | - Rui Zhang
- Department of Chemistry University of Pittsburgh Pittsburgh PA 15260 USA
| | - Gang Lu
- Department of Chemistry University of Pittsburgh Pittsburgh PA 15260 USA
| | - Peng Liu
- Department of Chemistry University of Pittsburgh Pittsburgh PA 15260 USA
| | - Yan Xia
- Department of Chemistry Stanford University Stanford CA 94305 USA
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20
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Peng JJ, Panda B, Satyanarayana K, Yang HR, Huang SL, Huang MJ, Chen CH, Lai G, Lai YY, Luh TY. Stereospecific Synthesis of Poly(methylene-E-vinylene) by Ring Opening Metathesis Polymerization of Substituted Cyclopropene Using Grubbs Catalysts. Macromolecules 2019. [DOI: 10.1021/acs.macromol.9b01956] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
| | | | | | | | | | | | | | - Guoqiao Lai
- Key Laboratory of Organosilicon Chemistry and Material Technology of Ministry of Education, Hangzhou Normal University, Hangzhou, Zhejiang 311121, China
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21
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Schowner R, Frey W, Buchmeiser MR. Understanding Synthetic Peculiarities of Cationic Molybdenum(VI) Imido Alkylidene N-Heterocyclic Carbene Complexes. Eur J Inorg Chem 2019. [DOI: 10.1002/ejic.201900021] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Roman Schowner
- Institute of Polymer Chemistry; University of Stuttgart; Pfaffenwaldring 55 70569 Stuttgart Germany
| | - Wolfgang Frey
- Institute of Organic Chemistry; University of Stuttgart; Pfaffenwaldring 55 70569 Stuttgart Germany
| | - Michael R. Buchmeiser
- Institute of Polymer Chemistry; University of Stuttgart; Pfaffenwaldring 55 70569 Stuttgart Germany
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22
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Wang T, Xie Q, Guo W, Wu S, Zhang H, Wang J. Synthesis and evaluation of Naphthalene-1, 8-dithiolate chelating ruthenium carbene catalyst for Z-Stereoretentive olefin metathesis. J Organomet Chem 2019. [DOI: 10.1016/j.jorganchem.2018.10.035] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
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23
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Abstract
This Viewpoint highlights the viability and increasing variety of functionalized polypentenamers as unique and valuable materials created through enthalpy-driven ring-opening metathesis polymerization (ROMP) of low ring strain cyclopentene monomers. The terms "low ring strain" and "enthalpy-driven" are typically conflicting ideologies for successful ROMP; however, these monomers possess a heightened sensitivity to reaction conditions, which may be leveraged in a number of ways to provide performance elastomers with good yield and precise functional topologies. Over the last several years, a rekindled interest in these systems has led to a renaissance of research aimed at improving their synthesis and exploring their potential. Their chemistry, applications, and future outlook are discussed.
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Affiliation(s)
- William J. Neary
- Department of Chemistry and Biochemistry, Florida State University, Tallahassee, Florida 32306-4390, United States
| | - Justin G. Kennemur
- Department of Chemistry and Biochemistry, Florida State University, Tallahassee, Florida 32306-4390, United States
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24
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Buchmeiser MR. Functional Precision Polymers via Stereo- and Regioselective Polymerization Using Group 6 Metal Alkylidene and Group 6 and 8 Metal Alkylidene N-Heterocyclic Carbene Complexes. Macromol Rapid Commun 2018; 40:e1800492. [PMID: 30118168 DOI: 10.1002/marc.201800492] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2018] [Revised: 07/09/2018] [Indexed: 12/24/2022]
Abstract
The concepts of functional precision polymers and the latest accomplishments in their synthesis are summarized. Synthetic concepts based on chain growth polymerization are compared to iterative synthetic approaches. Here, the term "functional precision polymers" refers to polymers that are not solely hydrocarbon-based but contain functional groups and are characterized by a highly ordered primary structure. If insertion polymerization is used for their synthesis, olefin metathesis-based polymerization techniques, that is, ring-opening metathesis polymerization (ROMP), acyclic diene metathesis (ADMET) polymerization, and the regio- and stereoselective cyclopolymerization of α,ω-diynes are almost exclusively applied. Particularly with regio- and stereospecific ROMP and with cyclopolymerization, the synthesis of tactic polymers and copolymers with high regio-, stereo-, and sequence control can be accomplished; however, it requires carefully tailored transition metal catalysts. The fundamental synthetic concepts and strategies are outlined.
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Affiliation(s)
- Michael R Buchmeiser
- Institute of Polymer Chemistry, University of Stuttgart, Pfaffenwaldring 55,, D-70569, Stuttgart, Germany
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25
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Dumas A, Tarrieu R, Vives T, Roisnel T, Dorcet V, Baslé O, Mauduit M. A Versatile and Highly Z-Selective Olefin Metathesis Ruthenium Catalyst Based on a Readily Accessible N-Heterocyclic Carbene. ACS Catal 2018. [DOI: 10.1021/acscatal.8b00151] [Citation(s) in RCA: 48] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Adrien Dumas
- Univ Rennes, Ecole Nationale Supérieure de Chimie de Rennes, CNRS, ISCR-UMR 6226, F-35000 Rennes, France
- DEMETA SAS, 6 rue Pierre-Joseph Colin, 35000 Rennes, France
| | - Robert Tarrieu
- Univ Rennes, Ecole Nationale Supérieure de Chimie de Rennes, CNRS, ISCR-UMR 6226, F-35000 Rennes, France
| | - Thomas Vives
- Univ Rennes, Ecole Nationale Supérieure de Chimie de Rennes, CNRS, ISCR-UMR 6226, F-35000 Rennes, France
| | | | - Vincent Dorcet
- Univ Rennes, CNRS, ISCR-UMR 6226, F-35000 Rennes, France
| | - Olivier Baslé
- Univ Rennes, Ecole Nationale Supérieure de Chimie de Rennes, CNRS, ISCR-UMR 6226, F-35000 Rennes, France
| | - Marc Mauduit
- Univ Rennes, Ecole Nationale Supérieure de Chimie de Rennes, CNRS, ISCR-UMR 6226, F-35000 Rennes, France
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26
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Chen Y, Abdellatif MM, Nomura K. Olefin metathesis polymerization: Some recent developments in the precise polymerizations for synthesis of advanced materials (by ROMP, ADMET). Tetrahedron 2018. [DOI: 10.1016/j.tet.2017.12.041] [Citation(s) in RCA: 70] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
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27
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Nomura K, Hou X. Cis-Specific Chain Transfer Ring-Opening Metathesis Polymerization Using a Vanadium(V) Alkylidene Catalyst for Efficient Synthesis of End-Functionalized Polymers. Organometallics 2017. [DOI: 10.1021/acs.organomet.7b00675] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Kotohiro Nomura
- Department of Chemistry,
Faculty of Science and Engineering, Tokyo Metropolitan University, 1-1 minami Osawa, Hachioji, Tokyo 192-0397, Japan
| | - Xiaohua Hou
- Department of Chemistry,
Faculty of Science and Engineering, Tokyo Metropolitan University, 1-1 minami Osawa, Hachioji, Tokyo 192-0397, Japan
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28
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Sues PE, Bukhryakov KV, Schrock RR. Evaluation of Several Molybdenum and Ruthenium Catalysts for the Metathesis Homocoupling of 3‐Methyl‐1‐Butene. Helv Chim Acta 2017. [DOI: 10.1002/hlca.201700181] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Peter E. Sues
- Department of Chemistry 6‐331 Massachusetts Institute of Technology Cambridge Massachusetts 02139
| | - Konstantin V. Bukhryakov
- Department of Chemistry 6‐331 Massachusetts Institute of Technology Cambridge Massachusetts 02139
| | - Richard R. Schrock
- Department of Chemistry 6‐331 Massachusetts Institute of Technology Cambridge Massachusetts 02139
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29
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Lienert C, Frey W, Buchmeiser MR. Stereoselective Ring-Opening Metathesis Polymerization with Molybdenum Imido Alkylidenes Containing O-Chelating N-Heterocyclic Carbenes: Influence of Syn/Anti Interconversion and Polymerization Rates on Polymer Structure. Macromolecules 2017. [DOI: 10.1021/acs.macromol.7b00841] [Citation(s) in RCA: 38] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Affiliation(s)
| | | | - Michael R. Buchmeiser
- German Institutes
of Textile and Fiber Research (DITF), Körschtalstr. 26, D-73770 Denkendorf, Germany
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30
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Chaimongkolkunasin S, Hou X, Nomura K. Ring opening metathesis polymerization of norbornene and tetracyclododecene with cyclooctene by using (arylimido)vanadium(V)-alkylidene catalyst. ACTA ACUST UNITED AC 2017. [DOI: 10.1002/pola.28622] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Affiliation(s)
| | - Xiaohua Hou
- Department of Chemistry; Tokyo Metropolitan University; Hachioji Tokyo 192-0397 Japan
| | - Kotohiro Nomura
- Department of Chemistry; Tokyo Metropolitan University; Hachioji Tokyo 192-0397 Japan
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31
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Synthesis and Reaction Chemistry of Alkylidene Complexes With Titanium, Zirconium, Vanadium, and Niobium: Effective Catalysts for Olefin Metathesis Polymerization and Other Organic Transformations. ADVANCES IN ORGANOMETALLIC CHEMISTRY 2017. [DOI: 10.1016/bs.adomc.2017.08.001] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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32
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Nomura K, Hou X. Synthesis of vanadium–alkylidene complexes and their use as catalysts for ring opening metathesis polymerization. Dalton Trans 2017; 46:12-24. [DOI: 10.1039/c6dt03757g] [Citation(s) in RCA: 53] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Synthesis of vanadium–alkylidene complexes and some reactions have been reviewed; highly active, thermally robust, cis specific ROMP of cyclic olefins has been attained by ligand modification in (imido)vanadium(v)–alkylidene catalysts.
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Affiliation(s)
- Kotohiro Nomura
- Department of Chemistry
- Tokyo Metropolitan University
- Hachioji
- Japan
| | - Xiaohua Hou
- Department of Chemistry
- Tokyo Metropolitan University
- Hachioji
- Japan
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33
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Kumar DR, Lidster BJ, Adams RW, Turner ML. Mechanistic investigation of the ring opening metathesis polymerisation of alkoxy and alkyl substituted paracyclophanedienes. Polym Chem 2017. [DOI: 10.1039/c7py00543a] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
This paper discusses the living nature of the ring opening metathesis polymerisation (ROMP) of alkoxy and alkyl substituted [2.2] paracyclophane-1,9-dienes (M1 and M2), initiated with Grubbs’ second and third generation catalysts (G2 and G3).
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Affiliation(s)
- Dharam R. Kumar
- Organic Materials Innovation Centre
- School of Chemistry
- The University of Manchester
- Manchester
- UK
| | - Benjamin J. Lidster
- Organic Materials Innovation Centre
- School of Chemistry
- The University of Manchester
- Manchester
- UK
| | - Ralph W. Adams
- Organic Materials Innovation Centre
- School of Chemistry
- The University of Manchester
- Manchester
- UK
| | - Michael L. Turner
- Organic Materials Innovation Centre
- School of Chemistry
- The University of Manchester
- Manchester
- UK
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34
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Mikus MS, Torker S, Xu C, Li B, Hoveyda AH. Pentacoordinate Ruthenium(II) Catecholthiolate and Mercaptophenolate Catalysts for Olefin Metathesis: Anionic Ligand Exchange and Ease of Initiation. Organometallics 2016. [DOI: 10.1021/acs.organomet.6b00773] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Malte S. Mikus
- Department of Chemistry,
Merkert Chemistry Center, Boston College, Chestnut Hill, Massachusetts 02467, United States
| | - Sebastian Torker
- Department of Chemistry,
Merkert Chemistry Center, Boston College, Chestnut Hill, Massachusetts 02467, United States
| | - Chaofan Xu
- Department of Chemistry,
Merkert Chemistry Center, Boston College, Chestnut Hill, Massachusetts 02467, United States
| | - Bo Li
- Department of Chemistry,
Merkert Chemistry Center, Boston College, Chestnut Hill, Massachusetts 02467, United States
| | - 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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Hou X, Nomura K. Ring-Opening Metathesis Polymerization of Cyclic Olefins by (Arylimido)vanadium(V)-Alkylidenes: Highly Active, Thermally Robust Cis Specific Polymerization. J Am Chem Soc 2016; 138:11840-9. [DOI: 10.1021/jacs.6b06330] [Citation(s) in RCA: 50] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Xiaohua Hou
- Department of Chemistry,
Faculty of Science and Engineering, Tokyo Metropolitan University, 1-1 Minami Osawa, Hachioji, Tokyo 192-0397, Japan
| | - Kotohiro Nomura
- Department of Chemistry,
Faculty of Science and Engineering, Tokyo Metropolitan University, 1-1 Minami Osawa, Hachioji, Tokyo 192-0397, Japan
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36
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Buchmeiser MR, Sen S, Lienert C, Widmann L, Schowner R, Herz K, Hauser P, Frey W, Wang D. Molybdenum Imido Alkylidene N-Heterocyclic Carbene Complexes: Structure-Productivity Correlations and Mechanistic Insights. ChemCatChem 2016. [DOI: 10.1002/cctc.201600624] [Citation(s) in RCA: 51] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Michael R. Buchmeiser
- Institute of Polymer Chemistry; University of Stuttgart; Pfaffenwaldring 55 70569 Stuttgart Germany
- Institute of Textile Chemistry and Chemical Fibers; Körschtalstr. 26 73770 Denkendorf Germany
| | - Suman Sen
- Institute of Polymer Chemistry; University of Stuttgart; Pfaffenwaldring 55 70569 Stuttgart Germany
| | - Christina Lienert
- Institute of Polymer Chemistry; University of Stuttgart; Pfaffenwaldring 55 70569 Stuttgart Germany
| | - Laura Widmann
- Institute of Polymer Chemistry; University of Stuttgart; Pfaffenwaldring 55 70569 Stuttgart Germany
| | - Roman Schowner
- Institute of Polymer Chemistry; University of Stuttgart; Pfaffenwaldring 55 70569 Stuttgart Germany
| | - Katharina Herz
- Institute of Polymer Chemistry; University of Stuttgart; Pfaffenwaldring 55 70569 Stuttgart Germany
| | - Philipp Hauser
- Institute of Polymer Chemistry; University of Stuttgart; Pfaffenwaldring 55 70569 Stuttgart Germany
| | - Wolfgang Frey
- Institute of Organic Chemistry; University of Stuttgart; Pfaffenwaldring 55 70569 Stuttgart Germany
| | - Dongren Wang
- Institute of Polymer Chemistry; University of Stuttgart; Pfaffenwaldring 55 70569 Stuttgart Germany
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37
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Kanazawa S, Ohira T, Goda S, Hayakawa N, Tanikawa T, Hashizume D, Ishida Y, Kawaguchi H, Matsuo T. Synthesis and Structural Characterization of Lithium and Titanium Complexes Bearing a Bulky Aryloxide Ligand Based on a Rigid Fused-Ring s-Hydrindacene Skeleton. Inorg Chem 2016; 55:6643-52. [PMID: 27284975 DOI: 10.1021/acs.inorgchem.6b00762] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The bulky aryl alcohols, (Rind)OH (1) [Rind = EMind (a) and Eind (b)], based on the rigid fused-ring 1,1,3,3,5,5,7,7-octa-R-substituted s-hydrindacene skeleton were prepared by the reaction of (Rind)Li with nitrobenzene followed by protonation. The treatment of 1 with (n)BuLi affords the lithium aryloxide dimers [(Rind)OLi(THF)]2 (2) or trimers [(Rind)OLi]3 (3), depending on the employed solvents (THF = tetrahydrofuran). The salt metathesis reaction of [(EMind)OLi(THF)]2 (2a) with TiCl4(THF)2 leads to the formation of the mononuclear diamagnetic mono- and bis(aryloxide) Ti(IV) complexes, [(EMind)O]TiCl3(THF) (4a) and [(EMind)O]2TiCl2 (5a). We also isolated a trace amount of the tris(aryloxide) Ti(IV) complex, [(EMind)O]3TiCl (6a). The reaction between 2a and TiCl3(THF)3 resulted in the isolation of the mononuclear paramagnetic mono- and bis(aryloxide) Ti(III) complexes, [(EMind)O]TiCl2(THF)2 (7a) and [(EMind)O]2TiCl(THF)2 (8a). The discrete monomeric structures of the titanium complexes 4a, 5a, 6a, 7a, and 8a were determined by X-ray crystallography.
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Affiliation(s)
- Shoya Kanazawa
- Department of Applied Chemistry, Faculty of Science and Engineering, Kindai University , 3-4-1 Kowakae, Higashi-Osaka, Osaka 577-8502, Japan
| | - Taishi Ohira
- Department of Applied Chemistry, Faculty of Science and Engineering, Kindai University , 3-4-1 Kowakae, Higashi-Osaka, Osaka 577-8502, Japan
| | - Shun Goda
- Department of Applied Chemistry, Faculty of Science and Engineering, Kindai University , 3-4-1 Kowakae, Higashi-Osaka, Osaka 577-8502, Japan
| | - Naoki Hayakawa
- Department of Applied Chemistry, Faculty of Science and Engineering, Kindai University , 3-4-1 Kowakae, Higashi-Osaka, Osaka 577-8502, Japan
| | - Tomoharu Tanikawa
- Department of Applied Chemistry, Faculty of Science and Engineering, Kindai University , 3-4-1 Kowakae, Higashi-Osaka, Osaka 577-8502, Japan
| | - Daisuke Hashizume
- Materials Characterization Support Unit, RIKEN Center for Emergent Matter Science , 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
| | - Yutaka Ishida
- Department of Chemistry, Tokyo Institute of Technology , 2-12-1 Ookayama, Meguro-ku, Tokyo 152-8551, Japan
| | - Hiroyuki Kawaguchi
- Department of Chemistry, Tokyo Institute of Technology , 2-12-1 Ookayama, Meguro-ku, Tokyo 152-8551, Japan.,Japan Science and Technology Agency, ACT-C , 4-1-8 Honcho, Kawaguchi, Saitama 332-0012, Japan
| | - Tsukasa Matsuo
- Department of Applied Chemistry, Faculty of Science and Engineering, Kindai University , 3-4-1 Kowakae, Higashi-Osaka, Osaka 577-8502, Japan.,Japan Science and Technology Agency, ACT-C , 4-1-8 Honcho, Kawaguchi, Saitama 332-0012, Japan
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38
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Mikus MS, Torker S, Hoveyda AH. Controllable ROMP Tacticity by Harnessing the Fluxionality of Stereogenic‐at‐Ruthenium Complexes. Angew Chem Int Ed Engl 2016; 55:4997-5002. [DOI: 10.1002/anie.201601004] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2016] [Revised: 02/17/2016] [Indexed: 11/07/2022]
Affiliation(s)
- Malte S. Mikus
- Department of Chemistry Merkert Chemistry Center Boston College Chestnut Hill MA 02467 USA
| | - Sebastian Torker
- Department of Chemistry Merkert Chemistry Center Boston College Chestnut Hill MA 02467 USA
| | - Amir H. Hoveyda
- Department of Chemistry Merkert Chemistry Center Boston College Chestnut Hill MA 02467 USA
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39
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Mikus MS, Torker S, Hoveyda AH. Controllable ROMP Tacticity by Harnessing the Fluxionality of Stereogenic‐at‐Ruthenium Complexes. Angew Chem Int Ed Engl 2016. [DOI: 10.1002/ange.201601004] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Malte S. Mikus
- Department of Chemistry Merkert Chemistry Center Boston College Chestnut Hill MA 02467 USA
| | - Sebastian Torker
- Department of Chemistry Merkert Chemistry Center Boston College Chestnut Hill MA 02467 USA
| | - Amir H. Hoveyda
- Department of Chemistry Merkert Chemistry Center Boston College Chestnut Hill MA 02467 USA
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40
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Hong J, Li Z, Chen Z, Weng L, Zhou X, Zhang L. Small molecule activation by mixed methyl/methylidene rare earth metal complexes. Dalton Trans 2016; 45:6641-9. [DOI: 10.1039/c6dt00314a] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Diverse reactivity patterns of mixed tetramethyl/methylidene rare-earth complexes bearing bulky benzamidinate coligands with PhCN, alkynes, and CS2 have been established and fully characterized.
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Affiliation(s)
- Jianquan Hong
- Department of Chemistry
- Fudan University
- Shanghai 200433
- China
| | - Zhenhua Li
- Department of Chemistry
- Fudan University
- Shanghai 200433
- China
| | - Zhening Chen
- Department of Chemistry
- Fudan University
- Shanghai 200433
- China
| | - Linhong Weng
- Department of Chemistry
- Fudan University
- Shanghai 200433
- China
| | - Xigeng Zhou
- Department of Chemistry
- Fudan University
- Shanghai 200433
- China
| | - Lixin Zhang
- Department of Chemistry
- Fudan University
- Shanghai 200433
- China
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41
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Elling BR, Su JK, Xia Y. Ring-opening metathesis polymerization of 1,2-disubstituted cyclopropenes. Chem Commun (Camb) 2016; 52:9097-100. [DOI: 10.1039/c6cc00466k] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
We report the first study of ROMP of 1,2-CPs, which yielded narrowly dispersed polymers but exhibited a surprising slow termination reaction.
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Affiliation(s)
| | - Jessica K. Su
- Department of Chemistry
- Stanford University
- Stanford
- USA
| | - Yan Xia
- Department of Chemistry
- Stanford University
- Stanford
- USA
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42
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Sen S, Schowner R, Imbrich DA, Frey W, Hunger M, Buchmeiser MR. Neutral and Cationic Molybdenum Imido Alkylidene N-Heterocyclic Carbene Complexes: Reactivity in Selected Olefin Metathesis Reactions and Immobilization on Silica. Chemistry 2015; 21:13778-87. [PMID: 26249141 DOI: 10.1002/chem.201501615] [Citation(s) in RCA: 54] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2015] [Indexed: 11/06/2022]
Abstract
The synthesis and single-crystal X-ray structures of the novel molybdenum imido alkylidene N-heterocyclic carbene complexes [Mo(N-2,6-Me2C6H3)(IMesH2)(CHCMe2Ph)(OTf)2] (3), [Mo(N-2,6-Me2C6H3)(IMes)(CHCMe2Ph)(OTf)2] (4), [Mo(N-2,6-Me2C6H3)(IMesH2)(CHCMe2Ph)(OTf){OCH(CF3)2}] (5), [Mo(N-2,6-Me2C6H3)(CH3CN)(IMesH2)(CHCMe2Ph)(OTf)](+)BArF(-) (6), [Mo(N-2,6-Cl2C6H3)(IMesH2)(CHCMe3)(OTf)2] (7) and [Mo(N-2,6-Cl2C6H3)(IMes)(CHCMe3)(OTf)2] (8) are reported (IMesH2=1,3-dimesitylimidazolidin-2-ylidene, IMes=1,3-dimesitylimidazolin-2-ylidene, BArF(-)=tetrakis-[3,5-bis(trifluoromethyl)phenyl] borate, OTf=CF3SO3(-)). Also, silica-immobilized versions I1 and I2 were prepared. Catalysts 3-8, I1 and I2 were used in homo-, cross-, and ring-closing metathesis (RCM) reactions and in the cyclopolymerization of α,ω-diynes. In the RCM of α,ω-dienes, in the homometathesis of 1-alkenes, and in the ethenolysis of cyclooctene, turnover numbers (TONs) up to 100,000, 210,000 and 30,000, respectively, were achieved. With I1 and I2, virtually Mo-free products were obtained (<3 ppm Mo). With 1,6-hepta- and 1,7-octadiynes, catalysts 3, 4, and 5 allowed for the regioselective cyclopolymerization of 4,4-bis(ethoxycarbonyl)-1,6-heptadiyne, 4,4-bis(hydroxymethyl)-1,6-heptadiyne, 4,4-bis[(3,5-diethoxybenzoyloxy)methyl]-1,6-heptadiyne, 4,4,5,5-tetrakis(ethoxycarbonyl)-1,7-octadiyne, and 1,6-heptadiyne-4-carboxylic acid, underlining the high functional-group tolerance of these novel Group 6 metal alkylidenes.
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Affiliation(s)
- Suman Sen
- Institute of Polymer Chemistry, University of Stuttgart, Pfaffenwaldring 55, 70569 Stuttgart (Germany)
| | - Roman Schowner
- Institute of Polymer Chemistry, University of Stuttgart, Pfaffenwaldring 55, 70569 Stuttgart (Germany)
| | - Dominik A Imbrich
- Institute of Polymer Chemistry, University of Stuttgart, Pfaffenwaldring 55, 70569 Stuttgart (Germany)
| | - Wolfgang Frey
- Institute of Organic Chemistry, University of Stuttgart, Pfaffenwaldring 55, 70569 Stuttgart (Germany)
| | - Michael Hunger
- Institute of Chemical Technology, University of Stuttgart, Pfaffenwaldring 55, 70569 (Germany)
| | - Michael R Buchmeiser
- Institute of Polymer Chemistry, University of Stuttgart, Pfaffenwaldring 55, 70569 Stuttgart (Germany). .,Institute of Textile Chemistry and Chemical Fibers, Körschtalstr. 26, 73770 Denkendorf (Germany).
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43
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Elling BR, Xia Y. Living Alternating Ring-Opening Metathesis Polymerization Based on Single Monomer Additions. J Am Chem Soc 2015; 137:9922-6. [PMID: 26182144 DOI: 10.1021/jacs.5b05497] [Citation(s) in RCA: 75] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
By judiciously modulating the ring strain and sterics, we developed a class of disubstituted cyclopropenes that selectively underwent single monomer addition in ring-opening metathesis but readily underwent alternating ring-opening metathesis polymerization with low-strain cyclic olefins in a living fashion. The substituents on cyclopropenes effectively inhibited homoaddition and prevented secondary metathesis on the polymer backbone. The resulting polymers had controllable molecular weights and end groups, very low dispersities, and high regularity in microstructure under optimized conditions. (1)H and (13)C NMR spectroscopy and MALDI-TOF MS showed a rigorously alternating sequence. Interestingly, disubstituted cyclopropenes were found to present zero-order kinetics, indicating their rapid single addition and the rate-determining ring opening of the low-strain olefin.
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Affiliation(s)
- Benjamin R Elling
- Department of Chemistry, Stanford University, Stanford, California 94305, United States
| | - Yan Xia
- Department of Chemistry, Stanford University, Stanford, California 94305, United States
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44
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Herz K, Unold J, Hänle J, Schowner R, Sen S, Frey W, Buchmeiser MR. Mechanism of the Regio- and Stereoselective Cyclopolymerization of 1,6-Hepta- and 1,7-Octadiynes by High Oxidation State Molybdenum–Imidoalkylidene N-Heterocyclic Carbene Initiators. Macromolecules 2015. [DOI: 10.1021/acs.macromol.5b01185] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Affiliation(s)
| | - Jörg Unold
- Institute of Textile
Chemistry and Chemical Fibers, Körschtalstr.
26, D-73770 Denkendorf, Germany
| | | | | | | | | | - Michael R. Buchmeiser
- Institute of Textile
Chemistry and Chemical Fibers, Körschtalstr.
26, D-73770 Denkendorf, Germany
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45
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Molybdenum imido alkylidene and tungsten oxo alkylidene N-heterocyclic carbene complexes for olefin metathesis. MONATSHEFTE FUR CHEMIE 2015. [DOI: 10.1007/s00706-015-1498-4] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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46
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Schowner R, Frey W, Buchmeiser MR. Cationic Tungsten-Oxo-Alkylidene-N-Heterocyclic Carbene Complexes: Highly Active Olefin Metathesis Catalysts. J Am Chem Soc 2015; 137:6188-91. [DOI: 10.1021/jacs.5b03788] [Citation(s) in RCA: 70] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Roman Schowner
- Institute of Polymer Chemistry and ‡Institute of Organic Chemistry, University of Stuttgart, Pfaffenwaldring 55, D-70569 Stuttgart, Germany
| | - Wolfgang Frey
- Institute of Polymer Chemistry and ‡Institute of Organic Chemistry, University of Stuttgart, Pfaffenwaldring 55, D-70569 Stuttgart, Germany
| | - Michael R. Buchmeiser
- Institute of Polymer Chemistry and ‡Institute of Organic Chemistry, University of Stuttgart, Pfaffenwaldring 55, D-70569 Stuttgart, Germany
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47
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Hyvl J, Autenrieth B, Schrock RR. Proof of Tacticity of Stereoregular ROMP Polymers through Post Polymerization Modification. Macromolecules 2015. [DOI: 10.1021/acs.macromol.5b00477] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Affiliation(s)
- Jakub Hyvl
- Department of Chemistry 6-331, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
| | - Benjamin Autenrieth
- Department of Chemistry 6-331, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
| | - Richard R. Schrock
- Department of Chemistry 6-331, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
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48
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Autenrieth B, Jeong H, Forrest WP, Axtell JC, Ota A, Lehr T, Buchmeiser MR, Schrock RR. Stereospecific Ring-Opening Metathesis Polymerization (ROMP) of endo-Dicyclopentadiene by Molybdenum and Tungsten Catalysts. Macromolecules 2015. [DOI: 10.1021/acs.macromol.5b00123] [Citation(s) in RCA: 63] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Affiliation(s)
- Benjamin Autenrieth
- Department
of Chemistry 6-331, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
| | - Hyangsoo Jeong
- Department
of Chemistry 6-331, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
| | - William P. Forrest
- Department
of Chemistry 6-331, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
| | - Jonathan C. Axtell
- Department
of Chemistry 6-331, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
| | - Antje Ota
- Lehrstuhl
für Makromolekulare Stoffe und Faserchemie, Institut für
Polymerchemie, Universität Stuttgart, Pfaffenwaldring 55, D-70550 Stuttgart, Germany
| | - Thomas Lehr
- Lehrstuhl
für Makromolekulare Stoffe und Faserchemie, Institut für
Polymerchemie, Universität Stuttgart, Pfaffenwaldring 55, D-70550 Stuttgart, Germany
| | - Michael R. Buchmeiser
- Lehrstuhl
für Makromolekulare Stoffe und Faserchemie, Institut für
Polymerchemie, Universität Stuttgart, Pfaffenwaldring 55, D-70550 Stuttgart, Germany
| | - Richard R. Schrock
- Department
of Chemistry 6-331, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
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49
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Autenrieth B, Schrock RR. Stereospecific Ring-Opening Metathesis Polymerization (ROMP) of Norbornene and Tetracyclododecene by Mo and W Initiators. Macromolecules 2015. [DOI: 10.1021/acs.macromol.5b00161] [Citation(s) in RCA: 57] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Benjamin Autenrieth
- Department of Chemistry 6-331, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
| | - Richard R. Schrock
- Department of Chemistry 6-331, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
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50
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Hou X, Nomura K. (Arylimido)vanadium(V)–Alkylidene Complexes Containing Fluorinated Aryloxo and Alkoxo Ligands for Fast Living Ring-Opening Metathesis Polymerization (ROMP) and Highly Cis-Specific ROMP. J Am Chem Soc 2015; 137:4662-5. [DOI: 10.1021/jacs.5b02149] [Citation(s) in RCA: 56] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Xiaohua Hou
- Department of Chemistry,
Faculty of Science and Engineering, Tokyo Metropolitan University, 1-1 minami Osawa, Hachioji, Tokyo 192-0397, Japan
| | - Kotohiro Nomura
- Department of Chemistry,
Faculty of Science and Engineering, Tokyo Metropolitan University, 1-1 minami Osawa, Hachioji, Tokyo 192-0397, Japan
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