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Gaikwad SR, Patel K, Deshmukh SS, Mote NR, Birajdar RS, Pandole SP, Chugh J, Chikkali SH. Palladium-Catalyzed Insertion of Ethylene and 1,1-Disubstituted Difunctional Olefins: An Experimental and Computational Study. Chempluschem 2020; 85:1200-1209. [PMID: 32584523 DOI: 10.1002/cplu.202000309] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2020] [Revised: 05/21/2020] [Indexed: 11/09/2022]
Abstract
Insertion or coordination copolymerization of ethylene with di-substituted olefins is challenging and the choice of di-substituted mono-functional olefin versus di-substituted di-functional olefin (DDO) appears to be decisive. Here we show that DDO-inserted species are amenable to ethylene insertion and polymerization. DDOs such as 2-acetamidoacrylic acid (AAA), methyl 2-acetamidoacrylate (MAAA), and ethyl 2-cyanoacrylate (ECA) were treated with palladium complex [{P∧O}PdMe(L)] (P∧O=κ2 -P,O-Ar2 PC6 H4 SO2 O with Ar=2-MeOC6 H4 ; L=C2 H6 OS) and the existence of respective insertion intermediates in moderate yield (up to 37 %) was established. These intermediates were exposed to ethylene and corresponding ethylene-inserted products were isolated and characterized. A careful comparison with three model compounds confirmed ethylene insertion and polymerization. Thus, the combined experimental and computational investigations show that DDO-inserted species can undergo ethylene insertion and polymerization.
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Affiliation(s)
- Shahaji R Gaikwad
- Polymer Science and Engineering Division, CSIR-National Chemical Laboratory, Dr. Homi Bhabha Roa, Pune, 411008, India.,Academy of Scientific and Innovative Research AcSIR Anusandhan Bhawan, 2 Rafi Marg, New Delhi, 110001, India
| | - Ketan Patel
- Polymer Science and Engineering Division, CSIR-National Chemical Laboratory, Dr. Homi Bhabha Roa, Pune, 411008, India.,Membrane Science and Separation Technology Division, CSIR Central Salt and Marine Chemicals Research Institute, Gijubhai Badheka Marg, Bhavnagar, 364002, India
| | - Satej S Deshmukh
- Polymer Science and Engineering Division, CSIR-National Chemical Laboratory, Dr. Homi Bhabha Roa, Pune, 411008, India.,Academy of Scientific and Innovative Research AcSIR Anusandhan Bhawan, 2 Rafi Marg, New Delhi, 110001, India
| | - Nilesh R Mote
- Polymer Science and Engineering Division, CSIR-National Chemical Laboratory, Dr. Homi Bhabha Roa, Pune, 411008, India.,Academy of Scientific and Innovative Research AcSIR Anusandhan Bhawan, 2 Rafi Marg, New Delhi, 110001, India
| | - Rajkumar S Birajdar
- Polymer Science and Engineering Division, CSIR-National Chemical Laboratory, Dr. Homi Bhabha Roa, Pune, 411008, India.,Academy of Scientific and Innovative Research AcSIR Anusandhan Bhawan, 2 Rafi Marg, New Delhi, 110001, India
| | - Satish P Pandole
- Central NMR Facility, CSIR-National Chemical Laboratory, Dr. Homi Bhabha Roa, Pune-411008, India
| | - Jeetender Chugh
- Department of Chemistry, Indian Institute of Science Education & Research Pune, Dr. Homi Bhabha Road, Pune, 411008, India
| | - Samir H Chikkali
- Polymer Science and Engineering Division, CSIR-National Chemical Laboratory, Dr. Homi Bhabha Roa, Pune, 411008, India.,Academy of Scientific and Innovative Research AcSIR Anusandhan Bhawan, 2 Rafi Marg, New Delhi, 110001, India
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2
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Krappitz T, Brauer D, Theato P. Synthesis of poly(allyl 2-ylidene-acetate) and subsequent post-polymerization modification via thiol–ene reaction. Polym Chem 2016. [DOI: 10.1039/c6py00818f] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
Poly(allyl 2-ylidene-acetate) (Mw = 125 300 g mol−1) was synthesized via rhodium mediated catalysis of allyl 2-diazoacetate and its polymerization kinetics and polymer characteristics are presented and discussed. Furthermore, post-polymerization modification utilized the reactive character of poly(allyl 2-ylidene-acetate) by means of thiol–ene reactions.
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Affiliation(s)
- Tim Krappitz
- Department of Chemistry
- Institute for Technical and Macromolecular Chemistry
- University of Hamburg
- D-20146 Hamburg
- Germany
| | - Daniel Brauer
- Department of Chemistry
- Institute for Technical and Macromolecular Chemistry
- University of Hamburg
- D-20146 Hamburg
- Germany
| | - Patrick Theato
- Department of Chemistry
- Institute for Technical and Macromolecular Chemistry
- University of Hamburg
- D-20146 Hamburg
- Germany
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3
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Jonasson KJ, Polukeev AV, Marcos R, Ahlquist MSG, Wendt OF. Reversible α-Hydrogen and α-Alkyl Elimination in PC(sp3)P Pincer Complexes of Iridium. Angew Chem Int Ed Engl 2015. [DOI: 10.1002/ange.201503593] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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4
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Jonasson KJ, Polukeev AV, Marcos R, Ahlquist MSG, Wendt OF. Reversible α-Hydrogen and α-Alkyl Elimination in PC(sp3)P Pincer Complexes of Iridium. Angew Chem Int Ed Engl 2015; 54:9372-5. [DOI: 10.1002/anie.201503593] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2015] [Indexed: 11/12/2022]
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5
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Deibel N, Hohloch S, Schweinfurth D, Weisser F, Grupp A, Sarkar B. Three-way cooperativity in d8 metal complexes with ligands displaying chemical and redox non-innocence. Chemistry 2014; 20:15178-87. [PMID: 25251147 DOI: 10.1002/chem.201403276] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2014] [Indexed: 01/19/2023]
Abstract
Reversible proton- and electron-transfer steps are crucial for various chemical transformations. The electron-reservoir behavior of redox non-innocent ligands and the proton-reservoir behavior of chemically non-innocent ligands can be cooperatively utilized for substrate bond activation. Although site-decoupled proton- and electron-transfer steps are often found in enzymatic systems, generating model metal complexes with these properties remains challenging. To tackle this issue, we present herein complexes [(cod-H)M(μ-L(2-)) M(cod-H)] (M = Pt(II), [1] or Pd(II), [2], cod = 1,5-cyclooctadiene, H2L = 2,5-di-[2,6-(diisopropyl)anilino]-1,4-benzoquinone), in which cod acts as a proton reservoir, and L(2-) as an electron reservoir. Protonation of [2] leads to an unusual tetranuclear complex. However, [1] can be stepwise reversibly protonated with up to two protons on the cod-H ligands, and the protonated forms can be stepwise reversibly reduced with up to two electrons on the L(2-) ligand. The doubly protonated form of [1] is also shown to react with OMe(-) leading to an activation of the cod ligands. The site-decoupled proton and electron reservoir sources work in tandem in a three-way cooperative process that results in the transfer of two electrons and two protons to a substrate leading to its double reduction and protonation. These results will possibly provide new insights into developing catalysts for multiple proton- and electron-transfer reactions by using metal complexes of non-innocent ligands.
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Affiliation(s)
- Naina Deibel
- Institut für Anorganische Chemie, Universität Stuttgart, Pfaffenwaldring 55, 70569, Stuttgart (Germany)
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7
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Franssen NMG, Ensing B, Hegde M, Dingemans TJ, Norder B, Picken SJ, Alberda van Ekenstein GOR, van Eck ERH, Elemans JAAW, Vis M, Reek JNH, de Bruin B. On the “Tertiary Structure” of Poly-Carbenes; Self-Assembly of sp3-Carbon-Based Polymers into Liquid-Crystalline Aggregates. Chemistry 2013; 19:11577-89. [PMID: 23852805 DOI: 10.1002/chem.201301403] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2013] [Indexed: 11/06/2022]
Affiliation(s)
- Nicole M G Franssen
- Van 't Hoff Institute for Molecular Sciences (HIMS), Universiteit van Amsterdam, P. O. Box 94720, 1090 GS Amsterdam, The Netherlands
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