Journal article Open Access

Cascade Ring-Opening/Ring-Closing Metathesis Polymerization of a Monomer Containing a Norbornene and a Cyclohexene Ring

Yasir, Mohammad; Kilbinger, Andreas F.M.


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{
  "DOI": "10.1021/acsmacrolett.0c00882", 
  "author": [
    {
      "family": "Yasir, Mohammad"
    }, 
    {
      "family": "Kilbinger, Andreas F.M."
    }
  ], 
  "issued": {
    "date-parts": [
      [
        2021, 
        1, 
        13
      ]
    ]
  }, 
  "abstract": "<p>Norbornene is polymerized extremely fast when reacted with Grubbs&rsquo; first (<strong>G1</strong>) or third generation catalyst (<strong>G3</strong>) because of its very high ring strain energy. Cyclohexene, on the other hand, cannot be polymerized using <strong>G1</strong> or <strong>G3</strong> due to its very low ring strain energy. Subsequently, the sequence-selective polymerization of these two monomers is extremely challenging. A sequence-selective cascade ring-opening/ring-closing metathesis polymerization of the monomer <strong>M</strong> containing both the norbornene and the cyclohexene ring using <strong>G1</strong> or <strong>G3</strong> is reported. The polymer structure was analyzed by <sup>1</sup>H NMR, <sup>1</sup>H&ndash;<sup>1</sup>H COSY, and <sup>1</sup>H&ndash;<sup>1</sup>H ROESY spectroscopy and MALDI-ToF mass spectrometry. Polymers with moderate molecular weight dispersities and good molecular weight control were achieved by varying the ratio between monomer <strong>M</strong> and <strong>G1</strong>.</p>", 
  "title": "Cascade Ring-Opening/Ring-Closing Metathesis Polymerization of a Monomer Containing a Norbornene and a Cyclohexene Ring", 
  "type": "article-journal", 
  "id": "5946824"
}
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