1 Ocak 2018 Dergi makalesi Açık Erişim

Cakici, Murat; Kilic, Hamdullah; Ulukanli, Sabri; Ekinci, Duygu

Dublin Core

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  <dc:creator>Cakici, Murat</dc:creator>
  <dc:creator>Kilic, Hamdullah</dc:creator>
  <dc:creator>Ulukanli, Sabri</dc:creator>
  <dc:creator>Ekinci, Duygu</dc:creator>
  <dc:date>2018-01-01</dc:date>
  <dc:description>A pair of Mn-III(quinazolinone) complexes was prepared and evaluated in the catalytic epoxidation of the chiral allylic alcohols and unfunctionalised alkenes with iodosylbenzene. Epoxidation of chiral allylic alcohols with 1,3-allylic strain proceeded chemo- and diastereoselectively to give threo-epoxy alcohol (up to 99% d.r). Epoxidation of unfunctionalised alkenes by the proposed catalyst system proceeded nonselectively, as evidenced by the formation of isomerization and rearrangement products in the epoxidation of (Z)-stilbene. A three-step pathway involving a cationic intermediate is proposed for the formation of isomerization and rearrangement products. The fact that only products resulting from the cationic intermediate were detected in the oxidation of a mechanistic probe, (2-methoxy-3-vinylcyclopropyl)benzene, with Mn-III(quinazolinone) and PhIO substantiated the cationic oxygen transfer mechanism. (C) 2017 Elsevier Ltd. All rights reserved.</dc:description>
  <dc:identifier>https://aperta.ulakbim.gov.trrecord/29995</dc:identifier>
  <dc:identifier>oai:zenodo.org:29995</dc:identifier>
  <dc:rights>info:eu-repo/semantics/openAccess</dc:rights>
  <dc:rights>http://www.opendefinition.org/licenses/cc-by</dc:rights>
  <dc:source>TETRAHEDRON 74(1) 49-57</dc:source>
  <dc:title>Evidence for involvement of cationic intermediate in epoxidation of chiral allylic alcohols and unfunctionalised alkenes catalysed by Mn-III(quinazolinone) complexes</dc:title>
  <dc:type>info:eu-repo/semantics/article</dc:type>
  <dc:type>publication-article</dc:type>
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