1 Ocak 2018 Dergi makalesi Açık Erişim

Ozturk, Bengi Ozgun; Calisgan, Gulsah; Ozer, Halenur; Sehitoglu, Solmaz Karabulut

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{
  "@context": "https://schema.org/", 
  "@id": 30033, 
  "@type": "ScholarlyArticle", 
  "creator": [
    {
      "@type": "Person", 
      "affiliation": "Hacettepe Univ, Fac Sci, Chem Dept, TR-06800 Ankara, Turkey", 
      "name": "Ozturk, Bengi Ozgun"
    }, 
    {
      "@type": "Person", 
      "affiliation": "Hacettepe Univ, Fac Sci, Chem Dept, TR-06800 Ankara, Turkey", 
      "name": "Calisgan, Gulsah"
    }, 
    {
      "@type": "Person", 
      "affiliation": "Hacettepe Univ, Fac Sci, Chem Dept, TR-06800 Ankara, Turkey", 
      "name": "Ozer, Halenur"
    }, 
    {
      "@type": "Person", 
      "affiliation": "Hacettepe Univ, Fac Sci, Chem Dept, TR-06800 Ankara, Turkey", 
      "name": "Sehitoglu, Solmaz Karabulut"
    }
  ], 
  "datePublished": "2018-01-01", 
  "description": "Imidazole end-functionalized polycyclooctene derivatives were synthesized using a two-step procedure; combining ring-opening metathesis polymerization (ROMP)/cross-metathesis (CM) and aminolysis reaction. ROMP/CM of cyclooctene (COE) in the presence of methyl-10-undecenoate (MU) as a chain transfer agent in the presence of Grubbs first generation catalyst (G1) at 40 degrees C afforded mono ester end-functionalized (MF) as the major and bis ester end-functionalized (DF) polycyclooctene as the minor product. No isomerized mono ester endfunctionalized (IMF) polycyclooctene was formed during G1 catalyzed ROMP/CM reactions. The post-polymerization modification of MF in the presence of 1-(3-aminopropyl) imidazole and different catalysts (Sn(Oct)(2), Ti(OiPr)(4) and triazabicyclodecene (TBD) in THE at 70 degrees C afforded imidazole end-functionalized polyolefms in excellent yields. All polymers were characterized by means of MALDI ToF-MS, H-1 and C-13 NMR spectrometry and Size Exclusion Chromatography (SEC) analyses. The solvent selectivity and catalyst screening experiments were carried out for both ROMP/CM and aminolysis reactions to determine the optimum reaction conditions.", 
  "headline": "Imidazole end-functionalized polycyclooctenes from chain-transfer ring-opening metathesis polymerization and aminolysis reactions", 
  "identifier": 30033, 
  "image": "https://aperta.ulakbim.gov.tr/static/img/logo/aperta_logo_with_icon.svg", 
  "license": "http://www.opendefinition.org/licenses/cc-by", 
  "name": "Imidazole end-functionalized polycyclooctenes from chain-transfer ring-opening metathesis polymerization and aminolysis reactions", 
  "url": "https://aperta.ulakbim.gov.tr/record/30033"
}