1
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Ingram AA, Wang D, Schwaneberg U, Okuda J. Grubbs-Hoveyda catalysts conjugated to a β-barrel protein: Effect of halide substitution on aqueous olefin metathesis activity. J Inorg Biochem 2024; 258:112616. [PMID: 38833874 DOI: 10.1016/j.jinorgbio.2024.112616] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2024] [Revised: 05/15/2024] [Accepted: 05/18/2024] [Indexed: 06/06/2024]
Abstract
The effect of halide substitution in Grubbs-Hoveyda II catalysts (GHII catalysts) embedded in the engineered β-barrel protein nitrobindin (NB4exp) on metathesis activity in aqueous media was studied. Maleimide tagged dibromido and diiodido derivates of the GHII catalyst were synthesized and covalently conjugated to NB4exp. The biohybrid catalysts were characterized spectroscopically confirming the structural integrity. When the two chloride substituents at ruthenium center were exchanged against bromide and iodide, the diiodo derivative was found to show significantly higher catalytic activity in ring-closing metathesis of α,ω-diolefins, whereas the dibromido derivative was less efficient when compared with the parent dichlorido catalyst. Using the diiodido catalyst, high turnover numbers of up to 75 were observed for ring-closing metathesis (RCM) yielding unsaturated six- and seven-membered N-heterocycles.
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Affiliation(s)
- Aaron A Ingram
- Institute of Inorganic Chemistry, RWTH Aachen University, Landoltweg 1, 52074 Aachen, Germany
| | - Dong Wang
- Institute of Inorganic Chemistry, RWTH Aachen University, Landoltweg 1, 52074 Aachen, Germany; Institute of Biotechnology, RWTH Aachen University, Worringerweg 3, 52074 Aachen, Germany
| | - Ulrich Schwaneberg
- Institute of Biotechnology, RWTH Aachen University, Worringerweg 3, 52074 Aachen, Germany
| | - Jun Okuda
- Institute of Inorganic Chemistry, RWTH Aachen University, Landoltweg 1, 52074 Aachen, Germany.
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2
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Long J, Rocard L, Van Elslande E, Retailleau P, Xie J, Bogliotti N. Light-Promoted Basic Nitrogen Unmasking in Arene Ruthenium Complexes Derived from Z-Configured 2,2'-Azobispyridine. Chemistry 2023; 29:e202301301. [PMID: 37296071 DOI: 10.1002/chem.202301301] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2023] [Revised: 06/07/2023] [Accepted: 06/09/2023] [Indexed: 06/12/2023]
Abstract
Two novel 2,2'-azobispyridine derivatives bearing N-dialkylamino substituents at position 4,4' were synthesized and their E-Z photoswitching behavior was characterized by combination of 1 H- and 13 C NMR spectroscopy, UV-Vis absorption and DFT calculations. Both isomers act as ligands towards arene-RuII centers, leading either to E-configured 5-membered chelates (involving coordination of nitrogen atoms from N=N bond and pyridine) or to the uncommon Z-configured 7-membered chelates (involving coordination of nitrogen atoms from both pyridines). The latter show good stability in the dark, allowing single crystal X-ray diffraction study to be reported here for the first time. All synthesized Z-configured arene-RuII complexes undergo irreversible photo-isomerization to their corresponding E isomers with rearrangement of their coordination pattern. This property was advantageously exploited for the light-promoted unmasking of a basic nitrogen atom of the ligand.
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Affiliation(s)
- Jonathan Long
- Université Paris-Saclay, ENS Paris-Saclay, CNRS, Photophysique et Photochimie Supramoléculaires et Macromoléculaires, 91190, Gif-sur-Yvette, France
| | - Lou Rocard
- Université Paris-Saclay, ENS Paris-Saclay, CNRS, Photophysique et Photochimie Supramoléculaires et Macromoléculaires, 91190, Gif-sur-Yvette, France
| | - Elsa Van Elslande
- Université Paris-Saclay, CNRS, Institut de Chimie des Substances Naturelles, UPR 2301, 91198, Gif-sur-Yvette, France
| | - Pascal Retailleau
- Université Paris-Saclay, CNRS, Institut de Chimie des Substances Naturelles, UPR 2301, 91198, Gif-sur-Yvette, France
| | - Juan Xie
- Université Paris-Saclay, ENS Paris-Saclay, CNRS, Photophysique et Photochimie Supramoléculaires et Macromoléculaires, 91190, Gif-sur-Yvette, France
| | - Nicolas Bogliotti
- Université Paris-Saclay, ENS Paris-Saclay, CNRS, Photophysique et Photochimie Supramoléculaires et Macromoléculaires, 91190, Gif-sur-Yvette, France
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3
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Martínez-Vivas S, Poyatos M, Peris E. Supramolecular Control of the Oxidative Addition as a Way To Improve the Catalytic Efficiency of Pincer-Rhodium (I) Complexes. Angew Chem Int Ed Engl 2023; 62:e202307198. [PMID: 37342877 DOI: 10.1002/anie.202307198] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2023] [Revised: 06/21/2023] [Accepted: 06/21/2023] [Indexed: 06/23/2023]
Abstract
1 H NMR studies using a cationic complex with a pyridine-di-imidazolylidene pincer ligand of formula [Rh(CNC)(CO)]+ revealed that this compound showed high binding affinity with coronene in CH2 Cl2 . The interaction between coronene and the planar RhI complex is established by means of π-stacking interactions. This interaction has a strong impact on the electron-donating strength of the pincer CNC ligand, which is increased significantly, as demonstrated by the shifting of the ν(CO) stretching bands to lower frequencies. The addition of coronene increases the reaction rate of the nucleophilic attack of methyl iodide on the rhodium (I) pincer complex, and also has a positive effect on the performance of the complex as a catalyst in the cycloisomerization of 4-pentynoic acid. These findings highlight the importance of supramolecular interactions for tuning the reactivity and catalytic activity of square-planar metal complexes.
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Affiliation(s)
- Sebastián Martínez-Vivas
- Institute of Advanced Materials (INAM)., Universitat Jaume I, Av. Vicente Sos Baynat s/n., 12071, Castellón, Spain
| | - Macarena Poyatos
- Institute of Advanced Materials (INAM)., Universitat Jaume I, Av. Vicente Sos Baynat s/n., 12071, Castellón, Spain
| | - Eduardo Peris
- Institute of Advanced Materials (INAM)., Universitat Jaume I, Av. Vicente Sos Baynat s/n., 12071, Castellón, Spain
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4
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Majee D, Ramanauskaite G, Presolski S. Electronic Influences on the Dynamic Range of Photoswitchable Dithienylethene-Thiourea Organocatalysts. J Org Chem 2023; 88:4372-4378. [PMID: 36939093 DOI: 10.1021/acs.joc.2c02987] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/21/2023]
Abstract
Thiourea-based organocatalysts bearing a photoswitchable dithienylethene (DTE) core and a wide range of substituents were prepared and extensively tested for their ability to accelerate the Michael reaction between acetylacetone and trans-β-nitrostyrene. There is a strong correlation between the Hammett parameter of the modulating groups and catalytic activity following UV irradiation. Electron-withdrawing groups afford the largest reactivity difference between the catalysts in their ring-open form and their ring-closed isomer, with evidence for electronic coupling between the two halves in both oDTE and cDTE.
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Affiliation(s)
- Debashis Majee
- Division of Science, Yale-NUS College, Singapore 138527, Singapore
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5
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Park S, Byun S, Ryu H, Hahm H, Lee J, Hong S. Reversibly Photoswitchable Catalysts for Olefin Metathesis Reactions. ACS Catal 2021. [DOI: 10.1021/acscatal.1c04281] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Seongwook Park
- Department of Chemistry, Gwangju Institute of Science and Technology, 123 Cheomdan-gwagi-ro, Buk-gu, Gwangju 61005, Republic of Korea
- Grubbs Center for Polymers and Catalysis, Gwangju Institute of Science and Technology, 123 Cheomdan-gwagi-ro, Buk-gu, Gwangju 61005, Republic of Korea
| | - Seunghwan Byun
- Department of Chemistry, Gwangju Institute of Science and Technology, 123 Cheomdan-gwagi-ro, Buk-gu, Gwangju 61005, Republic of Korea
| | - Huijeoung Ryu
- Department of Chemistry, Gwangju Institute of Science and Technology, 123 Cheomdan-gwagi-ro, Buk-gu, Gwangju 61005, Republic of Korea
| | - Hyungwoo Hahm
- Department of Chemistry, Gwangju Institute of Science and Technology, 123 Cheomdan-gwagi-ro, Buk-gu, Gwangju 61005, Republic of Korea
| | - Junseong Lee
- Department of Chemistry, Chonnam National University, 77 Yongbong-ro, Buk-gu, Gwangju 61186, Republic of Korea
| | - Sukwon Hong
- Department of Chemistry, Gwangju Institute of Science and Technology, 123 Cheomdan-gwagi-ro, Buk-gu, Gwangju 61005, Republic of Korea
- Grubbs Center for Polymers and Catalysis, Gwangju Institute of Science and Technology, 123 Cheomdan-gwagi-ro, Buk-gu, Gwangju 61005, Republic of Korea
- School of Materials Science and Engineering, Gwangju Institute of Science and Technology, 123 Cheomdan-gwagi-ro, Buk-gu, Gwangju 61005, Republic of Korea
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6
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Ruiz‐Zambrana C, Gutiérrez‐Blanco A, Gonell S, Poyatos M, Peris E. Redox‐Switchable Cycloisomerization of Alkynoic Acids with Napthalenediimide‐Derived N‐Heterocyclic Carbene Complexes. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202107973] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Affiliation(s)
- César Ruiz‐Zambrana
- Institute of Advanced Materials (INAM). Universitat Jaume I. Av. Vicente Sos Baynat s/n. 12071 Castellón Spain
| | - Ana Gutiérrez‐Blanco
- Institute of Advanced Materials (INAM). Universitat Jaume I. Av. Vicente Sos Baynat s/n. 12071 Castellón Spain
| | - Sergio Gonell
- Institute of Advanced Materials (INAM). Universitat Jaume I. Av. Vicente Sos Baynat s/n. 12071 Castellón Spain
| | - Macarena Poyatos
- Institute of Advanced Materials (INAM). Universitat Jaume I. Av. Vicente Sos Baynat s/n. 12071 Castellón Spain
| | - Eduardo Peris
- Institute of Advanced Materials (INAM). Universitat Jaume I. Av. Vicente Sos Baynat s/n. 12071 Castellón Spain
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7
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8
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Ruiz‐Zambrana C, Gutiérrez‐Blanco A, Gonell S, Poyatos M, Peris E. Redox-Switchable Cycloisomerization of Alkynoic Acids with Napthalenediimide-Derived N-Heterocyclic Carbene Complexes. Angew Chem Int Ed Engl 2021; 60:20003-20011. [PMID: 34255909 PMCID: PMC8457061 DOI: 10.1002/anie.202107973] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2021] [Indexed: 12/22/2022]
Abstract
Two naphthalene-diimide (NDI) bis-imidazolium salts have been used as N-heterocyclic carbene (NHC) precursors for the preparation of NDI-functionalized complexes of rhodium and iridium of general formula [MCl(NDI-NHC)(COD)] (M=Rh, Ir; NDI-NHC=NDI-functionalized NHC ligand). Comparison of the IR spectra of the complexes [IrCl(NDI-NHC)(CO)2 ] and their related one- and two-electron reduced forms, reveal that each one-electron reduction produces a decrease of the average ν(CO) of 9-10 cm-1 , indicating a significant enhancement of the electron-richness of the metal. The [MCl(NDI-NHC)(COD)] complexes were tested in the catalytic cycloisomerization of alkynoic acids. The one-electron reduced forms showed greatly enhanced activities. For the cyclization of 5-hexynoic acid, the two-electron reduction of the ligand produced further enhancement of the catalytic activity, therefore showing that the catalyst can switch between three redox species with three distinct catalytic activities.
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Affiliation(s)
- César Ruiz‐Zambrana
- Institute of Advanced Materials (INAM).Universitat Jaume I.Av. Vicente Sos Baynat s/n.12071CastellónSpain
| | - Ana Gutiérrez‐Blanco
- Institute of Advanced Materials (INAM).Universitat Jaume I.Av. Vicente Sos Baynat s/n.12071CastellónSpain
| | - Sergio Gonell
- Institute of Advanced Materials (INAM).Universitat Jaume I.Av. Vicente Sos Baynat s/n.12071CastellónSpain
| | - Macarena Poyatos
- Institute of Advanced Materials (INAM).Universitat Jaume I.Av. Vicente Sos Baynat s/n.12071CastellónSpain
| | - Eduardo Peris
- Institute of Advanced Materials (INAM).Universitat Jaume I.Av. Vicente Sos Baynat s/n.12071CastellónSpain
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9
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Doerr AM, Burroughs JM, Gitter SR, Yang X, Boydston AJ, Long BK. Advances in Polymerizations Modulated by External Stimuli. ACS Catal 2020. [DOI: 10.1021/acscatal.0c03802] [Citation(s) in RCA: 41] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Alicia M. Doerr
- Department of Chemistry, University of Tennessee, Knoxville, Tennessee 37996-1600, United States
| | - Justin M. Burroughs
- Department of Chemistry, University of Tennessee, Knoxville, Tennessee 37996-1600, United States
| | - Sean R. Gitter
- Department of Chemistry, University of Wisconsin-Madison, Madison, Wisconsin 53706, United States
| | - Xuejin Yang
- Department of Chemistry, University of Wisconsin-Madison, Madison, Wisconsin 53706, United States
| | - Andrew J. Boydston
- Department of Chemistry, University of Wisconsin-Madison, Madison, Wisconsin 53706, United States
- Department of Chemical and Biological Engineering and Department of Materials Science and Engineering, University of Wisconsin-Madison, Madison, Wisconsin 53706, United States
| | - Brian K. Long
- Department of Chemistry, University of Tennessee, Knoxville, Tennessee 37996-1600, United States
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10
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Foster JC, Grocott MC, Arkinstall LA, Varlas S, Redding MJ, Grayson SM, O’Reilly RK. It is Better with Salt: Aqueous Ring-Opening Metathesis Polymerization at Neutral pH. J Am Chem Soc 2020; 142:13878-13885. [PMID: 32673484 PMCID: PMC7426906 DOI: 10.1021/jacs.0c05499] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2020] [Indexed: 12/15/2022]
Abstract
Aqueous ring-opening metathesis polymerization (ROMP) is a powerful tool for polymer synthesis under environmentally friendly conditions, functionalization of biomacromolecules, and preparation of polymeric nanoparticles via ROMP-induced self-assembly (ROMPISA). Although new water-soluble Ru-based metathesis catalysts have been developed and evaluated for their efficiency in mediating cross metathesis (CM) and ring-closing metathesis (RCM) reactions, little is known with regards to their catalytic activity and stability during aqueous ROMP. Here, we investigate the influence of solution pH, the presence of salt additives, and catalyst loading on ROMP monomer conversion and catalyst lifetime. We find that ROMP in aqueous media is particularly sensitive to chloride ion concentration and propose that this sensitivity originates from chloride ligand displacement by hydroxide or H2O at the Ru center, which reversibly generates an unstable and metathesis inactive complex. The formation of this Ru-(OH)n complex not only reduces monomer conversion and catalyst lifetime but also influences polymer microstructure. However, we find that the addition of chloride salts dramatically improves ROMP conversion and control. By carrying out aqueous ROMP in the presence of various chloride sources such as NaCl, KCl, or tetrabutylammonium chloride, we show that diblock copolymers can be readily synthesized via ROMPISA in solutions with high concentrations of neutral H2O (i.e., 90 v/v%) and relatively low concentrations of catalyst (i.e., 1 mol %). The capability to conduct aqueous ROMP at neutral pH is anticipated to enable new research avenues, particularly for applications in biological media, where the unique characteristics of ROMP provide distinct advantages over other polymerization strategies.
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Affiliation(s)
- Jeffrey C. Foster
- School
of Chemistry, University of Birmingham, Edgbaston, Birmingham B15 2TT, United
Kingdom
| | - Marcus C. Grocott
- School
of Chemistry, University of Birmingham, Edgbaston, Birmingham B15 2TT, United
Kingdom
| | - Lucy A. Arkinstall
- School
of Chemistry, University of Birmingham, Edgbaston, Birmingham B15 2TT, United
Kingdom
| | - Spyridon Varlas
- School
of Chemistry, University of Birmingham, Edgbaston, Birmingham B15 2TT, United
Kingdom
| | - McKenna J. Redding
- Department
of Chemistry, Tulane University, New Orleans, Louisiana 70118, United States
| | - Scott M. Grayson
- Department
of Chemistry, Tulane University, New Orleans, Louisiana 70118, United States
| | - Rachel K. O’Reilly
- School
of Chemistry, University of Birmingham, Edgbaston, Birmingham B15 2TT, United
Kingdom
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11
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Self-assembled nanostructures from amphiphilic block copolymers prepared via ring-opening metathesis polymerization (ROMP). Prog Polym Sci 2020. [DOI: 10.1016/j.progpolymsci.2020.101278] [Citation(s) in RCA: 47] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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12
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Church DC, Takiguchi L, Pokorski JK. Optimization of Ring-Opening Metathesis Polymerization (ROMP) under Physiologically Relevant Conditions. Polym Chem 2020; 11:4492-4499. [PMID: 33796158 PMCID: PMC8009303 DOI: 10.1039/d0py00716a] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Ring opening metathesis polymerization (ROMP) is widely considered an excellent living polymerization technique that proceeds rapidly under ambient conditions and is highly functional group tolerant when performed in organic solvents. However, achieving the same level of success in aqueous media has proved to be challenging, often requiring an organic co-solvent or a very low pH to obtain fast initiation and high monomer conversion. The ability to efficiently conduct ROMP under neutral pH aqueous conditions would mark an important step towards utilizing aqueous ROMP with acid-sensitive functional groups or within a biological setting. Herein we describe our efforts to optimize ROMP in an aqueous environment under neutral pH conditions. Specifically, we found that the presence of excess chloride in solution as well as relatively small changes in pH near physiological conditions have a profound effect on molecular weight control, polymerization rate and overall monomer conversion. Additionally, we have applied our optimized conditions to polymerize a broad scope of water-soluble monomers and used this methodology to produce nanostructures via ring opening metathesis polymerization induced self-assembly (ROMPISA) under neutral pH aqueous conditions.
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Affiliation(s)
- Derek C. Church
- Department of NanoEngineering, Jacobs School of Engineering, University of California San Diego, La Jolla, CA 92093, USA
| | - Lauren Takiguchi
- Department of NanoEngineering, Jacobs School of Engineering, University of California San Diego, La Jolla, CA 92093, USA
| | - Jonathan K. Pokorski
- Department of NanoEngineering, Jacobs School of Engineering, University of California San Diego, La Jolla, CA 92093, USA
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13
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Foster JC, Varlas S, Blackman LD, Arkinstall LA, O'Reilly RK. Ring‐Opening Metathesis Polymerization in Aqueous Media Using a Macroinitiator Approach. Angew Chem Int Ed Engl 2018; 57:10672-10676. [DOI: 10.1002/anie.201806719] [Citation(s) in RCA: 64] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2018] [Indexed: 01/05/2023]
Affiliation(s)
- Jeffrey C. Foster
- School of ChemistryUniversity of Birmingham Edgbaston Birmingham B15 2TT UK
| | - Spyridon Varlas
- School of ChemistryUniversity of Birmingham Edgbaston Birmingham B15 2TT UK
| | - Lewis D. Blackman
- Department of ChemistryThe University of Warwick Gibbet Hill Road Coventry CV4 7AL UK
| | - Lucy A. Arkinstall
- School of ChemistryUniversity of Birmingham Edgbaston Birmingham B15 2TT UK
| | - Rachel K. O'Reilly
- School of ChemistryUniversity of Birmingham Edgbaston Birmingham B15 2TT UK
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14
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Foster JC, Varlas S, Blackman LD, Arkinstall LA, O'Reilly RK. Ring‐Opening Metathesis Polymerization in Aqueous Media Using a Macroinitiator Approach. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201806719] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Jeffrey C. Foster
- School of ChemistryUniversity of Birmingham Edgbaston Birmingham B15 2TT UK
| | - Spyridon Varlas
- School of ChemistryUniversity of Birmingham Edgbaston Birmingham B15 2TT UK
| | - Lewis D. Blackman
- Department of ChemistryThe University of Warwick Gibbet Hill Road Coventry CV4 7AL UK
| | - Lucy A. Arkinstall
- School of ChemistryUniversity of Birmingham Edgbaston Birmingham B15 2TT UK
| | - Rachel K. O'Reilly
- School of ChemistryUniversity of Birmingham Edgbaston Birmingham B15 2TT UK
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15
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Walczak A, Stefankiewicz AR. pH-Induced Linkage Isomerism of Pd(II) Complexes: A Pathway to Air- and Water-Stable Suzuki–Miyaura-Reaction Catalysts. Inorg Chem 2017; 57:471-477. [DOI: 10.1021/acs.inorgchem.7b02711] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Anna Walczak
- Department
of Chemistry, Adam Mickiewicz University in Poznań, Umultowska 89b, 61-614 Poznań, Poland
- Centre for Advanced Technologies, Umultowska 89c, 61-614 Poznań, Poland
| | - Artur R. Stefankiewicz
- Department
of Chemistry, Adam Mickiewicz University in Poznań, Umultowska 89b, 61-614 Poznań, Poland
- Centre for Advanced Technologies, Umultowska 89c, 61-614 Poznań, Poland
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16
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Teator AJ, Bielawski CW. Remote control grubbs catalysts that modulate ring‐opening metathesis polymerizations. ACTA ACUST UNITED AC 2017. [DOI: 10.1002/pola.28665] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Affiliation(s)
- Aaron J. Teator
- Department of ChemistryUniversity of North Carolina at Chapel HillChapel Hill North Carolina27599
| | - Christopher W. Bielawski
- Center for Multidimensional Carbon Materials (CMCM), Institute for Basic Science (IBS)Ulsan44919 Republic of Korea
- Department of ChemistryUlsan National Institute of Science and Technology (UNIST)Ulsan44919 Republic of Korea
- Department of Energy EngineeringUlsan National Institute of Science and Technology (UNIST)Ulsan44919 Republic of Korea
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17
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Öztürk BÖ, Kolberg A, Karabulut Şehitoğlu S. Nonaqueous and Aqueous Emulsion ROMP Reactions Induced by Environment-Friendly Latent Ruthenium Indenylidene Catalyst Bearing Morpholine Substituted Bidentate (N, O) Schiff Bases. MACROMOL CHEM PHYS 2017. [DOI: 10.1002/macp.201600594] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
| | - Adrianna Kolberg
- Institut für Anorganische und Analytische Chemie; Albert-Ludwigs-Universität Freiburg; Albertstraße 21 79104 Freiburg Germany
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18
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Myers JT, Dakermanji SJ, Chastanet TR, Shivokevich PJ, Strausberg LJ, Sabat M, Myers WH, Harman WD. 4-(Dimethylamino)pyridine (DMAP) as an Acid-Modulated Donor Ligand for PAH Dearomatization. Organometallics 2016. [DOI: 10.1021/acs.organomet.6b00780] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Jeffery T. Myers
- Department
of Chemistry, University of Virginia, Charlottesville, Virginia 22904, United States
| | - Steven J. Dakermanji
- Department
of Chemistry, University of Virginia, Charlottesville, Virginia 22904, United States
| | - Timothy R. Chastanet
- Department
of Chemistry, University of Virginia, Charlottesville, Virginia 22904, United States
| | - Philip J. Shivokevich
- Department
of Chemistry, University of Virginia, Charlottesville, Virginia 22904, United States
| | - Laura J. Strausberg
- Department
of Chemistry, University of Virginia, Charlottesville, Virginia 22904, United States
| | - Michal Sabat
- Department
of Chemistry, University of Virginia, Charlottesville, Virginia 22904, United States
| | - William H. Myers
- Department
of Chemistry, University of Richmond, Richmond, Virginia 23173, United States
| | - W. Dean Harman
- Department
of Chemistry, University of Virginia, Charlottesville, Virginia 22904, United States
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19
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Abstract
The use of photocatalysts for visible light mediated reversible deactivation radical polymerization (RDRP) provides an efficient route for the synthesis of well-defined polymers with spatial, temporal and sequence control.
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Affiliation(s)
- Sivaprakash Shanmugam
- Centre for Advanced Macromolecular Design (CAMD)
- School of Chemical Engineering
- UNSW Australia
- Sydney
- Australia
| | - Jiangtao Xu
- Centre for Advanced Macromolecular Design (CAMD)
- School of Chemical Engineering
- UNSW Australia
- Sydney
- Australia
| | - Cyrille Boyer
- Centre for Advanced Macromolecular Design (CAMD)
- School of Chemical Engineering
- UNSW Australia
- Sydney
- Australia
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20
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Balof SL, Nix KO, Olliff MS, Roessler SE, Saha A, Müller KB, Behrens U, Valente EJ, Schanz HJ. Hexacoordinate Ru-based olefin metathesis catalysts with pH-responsive N-heterocyclic carbene (NHC) and N-donor ligands for ROMP reactions in non-aqueous, aqueous and emulsion conditions. Beilstein J Org Chem 2015; 11:1960-72. [PMID: 26664616 PMCID: PMC4660970 DOI: 10.3762/bjoc.11.212] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2015] [Accepted: 09/24/2015] [Indexed: 11/23/2022] Open
Abstract
Three new ruthenium alkylidene complexes (PCy3)Cl2(H2ITap)Ru=CHSPh (9), (DMAP)2Cl2(H2ITap)Ru=CHPh (11) and (DMAP)2Cl2(H2ITap)Ru=CHSPh (12) have been synthesized bearing the pH-responsive H2ITap ligand (H2ITap = 1,3-bis(2’,6’-dimethyl-4’-dimethylaminophenyl)-4,5-dihydroimidazol-2-ylidene). Catalysts 11 and 12 are additionally ligated by two pH-responsive DMAP ligands. The crystal structure was solved for complex 12 by X-ray diffraction. In organic, neutral solution, the catalysts are capable of performing standard ring-opening metathesis polymerization (ROMP) and ring closing metathesis (RCM) reactions with standard substrates. The ROMP with complex 11 is accelerated in the presence of two equiv of H3PO4, but is reduced as soon as the acid amount increased. The metathesis of phenylthiomethylidene catalysts 9 and 12 is sluggish at room temperature, but their ROMP can be dramatically accelerated at 60 °C. Complexes 11 and 12 are soluble in aqueous acid. They display the ability to perform RCM of diallylmalonic acid (DAMA), however, their conversions are very low amounting only to few turnovers before decomposition. However, both catalysts exhibit outstanding performance in the ROMP of dicyclopentadiene (DCPD) and mixtures of DCPD with cyclooctene (COE) in acidic aqueous microemulsion. With loadings as low as 180 ppm, the catalysts afforded mostly quantitative conversions of these monomers while maintaining the size and shape of the droplets throughout the polymerization process. Furthermore, the coagulate content for all experiments stayed <2%. This represents an unprecedented efficiency in emulsion ROMP based on hydrophilic ruthenium alkylidene complexes.
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Affiliation(s)
- Shawna L Balof
- Department of Chemistry & Biochemistry, The University of Southern Mississippi, 118 College Drive, Hattiesburg, MS 39406-5043, USA
| | - K Owen Nix
- Department of Chemistry, Georgia Southern University, 521 College of Education Drive, Statesboro, GA 30458-8064, USA
| | - Matthew S Olliff
- Department of Chemistry, Georgia Southern University, 521 College of Education Drive, Statesboro, GA 30458-8064, USA
| | - Sarah E Roessler
- Department of Chemistry, Georgia Southern University, 521 College of Education Drive, Statesboro, GA 30458-8064, USA
| | - Arpita Saha
- Department of Chemistry, Georgia Southern University, 521 College of Education Drive, Statesboro, GA 30458-8064, USA
| | | | - Ulrich Behrens
- BASF SE, Basic Chemicals Research, GCB/C - M313, 67056 Ludwigshafen, Germany
| | - Edward J Valente
- Department of Chemistry, University of Portland, 5000 N. Willamette Blvd., Portland, OR 97203, USA
| | - Hans-Jörg Schanz
- Department of Chemistry, Georgia Southern University, 521 College of Education Drive, Statesboro, GA 30458-8064, USA
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Isarov SA, Pokorski JK. Protein ROMP: Aqueous Graft-from Ring-Opening Metathesis Polymerization. ACS Macro Lett 2015; 4:969-973. [PMID: 35596466 DOI: 10.1021/acsmacrolett.5b00497] [Citation(s) in RCA: 50] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Ring-opening metathesis polymerization (ROMP) was carried out from the surface of a protein under aqueous conditions. Grubbs' third generation catalyst was modified with PEGylated pyridyl groups to form a water-soluble species that showed high activity in aqueous buffered solutions at near-neutral pH. The modification of a protein with this catalyst to create a stable macroinitiator for ROMP is described. The protein macroinitiator was then used to polymerize water-soluble norbornenes, resulting in high molecular weight protein/polymer conjugates. Varying polymerization time and monomer concentration demonstrated the kinetics of molecular weight evolution and macroinitiator conversion of graft-from ROMP.
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Affiliation(s)
- Sergey A. Isarov
- Department of Physiology and Biophysics, School of Medicine, and ‡Department of
Macromolecular Science and Engineering, School of Engineering, Case Western Reserve University, Cleveland, Ohio 44106, United States
| | - Jonathan K. Pokorski
- Department of Physiology and Biophysics, School of Medicine, and ‡Department of
Macromolecular Science and Engineering, School of Engineering, Case Western Reserve University, Cleveland, Ohio 44106, United States
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Rouen M, Queval P, Falivene L, Allard J, Toupet L, Crévisy C, Caijo F, Baslé O, Cavallo L, Mauduit M. Cationic Bis‐N‐Heterocyclic Carbene (NHC) Ruthenium Complex: Structure and Application as Latent Catalyst in Olefin Metathesis. Chemistry 2014; 20:13716-21. [DOI: 10.1002/chem.201403934] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2014] [Indexed: 11/06/2022]
Affiliation(s)
- Mathieu Rouen
- Ecole Nationale Supérieure de Chimie de Rennes, UMR CNRS 6626, 11 Allée de Beaulieu, CS 50837, 35708, Rennes Cedex 7 (France)
| | - Pierre Queval
- Ecole Nationale Supérieure de Chimie de Rennes, UMR CNRS 6626, 11 Allée de Beaulieu, CS 50837, 35708, Rennes Cedex 7 (France)
| | - Laura Falivene
- KAUST Catalysis Center, King Abdullah University of Science and Technology, Thuval 23955‐6900 (Saudi Arabia)
| | - Jessica Allard
- Ecole Nationale Supérieure de Chimie de Rennes, UMR CNRS 6626, 11 Allée de Beaulieu, CS 50837, 35708, Rennes Cedex 7 (France)
| | - Loïc Toupet
- Institut de Physique de Rennes, Université Rennes 1, CNRS, UMR 6251, 263 av. Général Leclerc, 35042 Rennes Cedex (France)
| | - Christophe Crévisy
- Ecole Nationale Supérieure de Chimie de Rennes, UMR CNRS 6626, 11 Allée de Beaulieu, CS 50837, 35708, Rennes Cedex 7 (France)
| | - Frédéric Caijo
- OmegaCat System, 11 Allée de Beaulieu, CS 50837, 35708, Rennes Cedex 7 (France)
| | - Olivier Baslé
- Ecole Nationale Supérieure de Chimie de Rennes, UMR CNRS 6626, 11 Allée de Beaulieu, CS 50837, 35708, Rennes Cedex 7 (France)
| | - Luigi Cavallo
- KAUST Catalysis Center, King Abdullah University of Science and Technology, Thuval 23955‐6900 (Saudi Arabia)
- Dipartimento di Chimica e Biologia, Universita' di Salerno, Via Papa Giovanni Paolo II, I‐84084 Fisciano (Italy)
| | - Marc Mauduit
- Ecole Nationale Supérieure de Chimie de Rennes, UMR CNRS 6626, 11 Allée de Beaulieu, CS 50837, 35708, Rennes Cedex 7 (France)
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24
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Zhan P, Wang J, Wang ZG, Ding B. Engineering the pH-responsive catalytic behavior of AuNPs by DNA. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2014; 10:399-406. [PMID: 24039035 DOI: 10.1002/smll.201301931] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/23/2013] [Revised: 07/22/2013] [Indexed: 06/02/2023]
Abstract
Noble metal nanoparticles have attracted much interest in the heterogeneous catalysis. Particularly, efficient manipulation of the responsive catalytic properties of the metal nanoparticles is an interesting topic. In this work, a simple and efficient strategy is developed to regulate the pH-responsive catalytic activities of glucose oxidase (GOx)-mimicking gold nanoparticles (AuNPs). Four DNA strands (regulating strands) that differ slightly in sequences are used to interact non-covalently with citrate-capped AuNPs, resulting in markedly distinct pH-dependent catalytic behavior of AuNPs. This is ascribed to the characteristic pH-induced conformational change of the DNA strands that leads to the different adsorption capability to the NPs surface, as demonstrated by pH-CD profiles of the respective DNA molecules. The pH-dependent catalysis of AuNPs is also encoded with structural information of the double-stranded DNA (including regulating strands and their complementary strands) that has conformation resistant or responsive to pH change. As a result, the catalysis can be programmed into an AND gate, a XNOR gate or a NOT gate, using pH and complementary strand as the inputs, the nanoparticle activity as the output and the regulating strands as the programs. This work can be expanded by engineering the catalytic behavior of noble metal nanoparticles to respond smartly to a variety of environmental stimuli, such as metal ions or light wavelengths. These results may provide insight into understanding ligand-regulated nanometallic catalysis.
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Affiliation(s)
- Pengfei Zhan
- National Center for Nanoscience and Technology, Beijing, 100190, PR China
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25
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Herndon JW. The chemistry of the carbon-transition metal double and triple bond: Annual survey covering the year 2011. Coord Chem Rev 2013. [DOI: 10.1016/j.ccr.2013.05.011] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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26
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Coe BJ, Raftery J, Rusanova D. Tris-[4-(di-methyl-amino)-pyridine][tris(pyra-zol-1-yl)methane]--ruthenium(II) bis-(hexa-fluorido-phosphate) diethyl ether monosolvate. Acta Crystallogr Sect E Struct Rep Online 2013; 69:m549-50. [PMID: 24098179 PMCID: PMC3790357 DOI: 10.1107/s1600536813025245] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2013] [Accepted: 09/11/2013] [Indexed: 11/12/2022]
Abstract
In the title compound, [Ru(C10H10N6)(C7H10N2)3](PF6)2·C4H10O, the RuII cation is coordinated by one tris(1-pyrazolyl)methane (Tpm) and three dimethylaminopyridine (dmap) ligands in a slightly distorted octahedral geometry. The asymmetric unit consists of one complex cation, two hexafluoridophosphate anions and one diethyl ether solvent molecule in general positions. Although quite a large number of ruthenium complexes of the facially coordinating tridentate Tpm ligand have been structurally characterized, this is only the second one containing three pyridyl co-ligands. The average Ru—N(Tpm) distance is 2.059 (12) Å, while the average Ru—N(dmap) [dmap = 4-(dimethylamino)pyridine] distance is somewhat longer at 2.108 (13) Å. The orientation of the dmap ligands varies greatly, with dihedral angles between the pyridyl and opposite pyrazolyl rings of 14.3 (2), 23.2 (2) and 61.2 (2)°.
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Affiliation(s)
- Benjamin J Coe
- School of Chemistry, University of Manchester, Manchester M13 9PL, UK
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27
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In situ modification of the Grubbs first generation catalyst: A highly controllable metathesis catalyst bearing tridentate Schiff base ligands. ACTA ACUST UNITED AC 2013. [DOI: 10.1016/j.molcata.2013.04.010] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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28
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Arumugam K, Varnado CD, Sproules S, Lynch VM, Bielawski CW. Redox-Switchable Ring-Closing Metathesis: Catalyst Design, Synthesis, and Study. Chemistry 2013; 19:10866-75. [DOI: 10.1002/chem.201301247] [Citation(s) in RCA: 82] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2013] [Indexed: 11/07/2022]
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29
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Klučiar M, Grela K, Mauduit M. Ruthenium-based complexes containing a benzimidazolium tag covalently connected to N-heterocyclic carbene ligands: environmentally friendly catalysts for olefin metathesis transformations. Dalton Trans 2013; 42:7354-8. [DOI: 10.1039/c2dt32856a] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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30
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Leibfarth FA, Mattson KM, Fors BP, Collins HA, Hawker CJ. Externe Regulation kontrollierter Polymerisationen. Angew Chem Int Ed Engl 2012. [DOI: 10.1002/ange.201206476] [Citation(s) in RCA: 80] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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31
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Leibfarth FA, Mattson KM, Fors BP, Collins HA, Hawker CJ. External Regulation of Controlled Polymerizations. Angew Chem Int Ed Engl 2012; 52:199-210. [DOI: 10.1002/anie.201206476] [Citation(s) in RCA: 359] [Impact Index Per Article: 29.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2012] [Indexed: 11/09/2022]
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32
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Vougioukalakis GC. Removing Ruthenium Residues from Olefin Metathesis Reaction Products. Chemistry 2012; 18:8868-80. [DOI: 10.1002/chem.201200600] [Citation(s) in RCA: 114] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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33
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Tuba R, Corrêa da Costa R, Bazzi HS, Gladysz JA. Phase Transfer Activation of Fluorous Analogs of Grubbs’ Second-Generation Catalyst: Ring-Opening Metathesis Polymerization. ACS Catal 2011. [DOI: 10.1021/cs200487j] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Affiliation(s)
- Robert Tuba
- Department of Chemistry, Texas A&M University at Qatar, P.O. Box 23874, Doha, Qatar
| | - Rosenildo Corrêa da Costa
- Institut für Organische
Chemie and Interdisciplinary Center for Molecular Materials, Friedrich-Alexander-Universität Erlangen-Nürnberg, Henkestraße 42, 91054 Erlangen, Germany
| | - Hassan S. Bazzi
- Department of Chemistry, Texas A&M University at Qatar, P.O. Box 23874, Doha, Qatar
| | - John A. Gladysz
- Department of Chemistry, Texas A&M University, P.O. Box 30012, College Station, Texas 77842-3012, United States
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34
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Ginzburg Y, Anaby A, Vidavsky Y, Diesendruck CE, Ben-Asuly A, Goldberg I, Lemcoff NG. Widening the Latency Gap in Chelated Ruthenium Olefin Metathesis Catalysts. Organometallics 2011. [DOI: 10.1021/om200323c] [Citation(s) in RCA: 64] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
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35
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Lipshutz BH, Ghorai S, Leong WWY, Taft BR, Krogstad DV. Manipulating micellar environments for enhancing transition metal-catalyzed cross-couplings in water at room temperature. J Org Chem 2011; 76:5061-73. [PMID: 21539384 PMCID: PMC3608412 DOI: 10.1021/jo200746y] [Citation(s) in RCA: 92] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
The remarkable effects of added salts on the properties of aqueous micelles derived from the amphiphile PTS are described. Most notably, Heck reactions run in the presence of NaCl lead to couplings on aryl bromides in water at room temperature. Olefin cross- and ring-closing metathesis reactions run in the presence of small amounts of pH-lowering KHSO(4) are also accelerated, another phenomenon that does not apply to typical processes in organic media. These salt effects allow, in general, for synthetically valuable C-C bond-forming processes to be conducted under environmentally benign conditions. Recycling of the surfactant is also demonstrated.
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Affiliation(s)
- Bruce H Lipshutz
- Department of Chemistry & Biochemistry, University of California, Santa Barbara, California 93106, USA.
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36
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Keitz BK, Bouffard J, Bertrand G, Grubbs RH. Protonolysis of a ruthenium-carbene bond and applications in olefin metathesis. J Am Chem Soc 2011; 133:8498-501. [PMID: 21574621 PMCID: PMC3121189 DOI: 10.1021/ja203070r] [Citation(s) in RCA: 93] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The synthesis of a ruthenium complex containing an N-heterocylic carbene (NHC) and a mesoionic carbene (MIC) is described wherein addition of a Brønsted acid results in protonolysis of the Ru-MIC bond to generate an extremely active metathesis catalyst. Mechanistic studies implicated a rate-determining protonation step in the generation of the metathesis-active species. The activity of the NHC/MIC catalyst was found to exceed those of current commercial ruthenium catalysts.
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Affiliation(s)
- Benjamin K. Keitz
- Arnold and Mabel Beckman Laboratories of Chemical Synthesis, Division of Chemistry and Chemical Engineering, California Institute of Technology, Pasadena, California, 91125
| | - Jean Bouffard
- UCR-CNRS Joint Research Chemical Laboratory, Department of Chemistry, University of California, Riverside, CA 92521
| | - Guy Bertrand
- UCR-CNRS Joint Research Chemical Laboratory, Department of Chemistry, University of California, Riverside, CA 92521
| | - Robert H. Grubbs
- Arnold and Mabel Beckman Laboratories of Chemical Synthesis, Division of Chemistry and Chemical Engineering, California Institute of Technology, Pasadena, California, 91125
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