1 Ocak 2020 Dergi makalesi Açık Erişim

Gok, Yasar; Aykut, Irem Tutkum; Gok, Halil Zeki

DataCite XML

<?xml version='1.0' encoding='utf-8'?>
<resource xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://datacite.org/schema/kernel-4" xsi:schemaLocation="http://datacite.org/schema/kernel-4 http://schema.datacite.org/meta/kernel-4.1/metadata.xsd">
  <identifier identifierType="URL">https://aperta.ulakbim.gov.tr/record/5553</identifier>
  <creators>
    <creator>
      <creatorName>Gok, Yasar</creatorName>
      <givenName>Yasar</givenName>
      <familyName>Gok</familyName>
      <affiliation>Burdur Mehmet Akif Ersoy Univ, Bucak Fac Technol, Dept Biomed Engn, TR-15300 Bucak, Burdur, Turkey</affiliation>
    </creator>
    <creator>
      <creatorName>Aykut, Irem Tutkum</creatorName>
      <givenName>Irem Tutkum</givenName>
      <familyName>Aykut</familyName>
      <affiliation>Burdur Mehmet Akif Ersoy Univ, Bucak Fac Technol, Dept Biomed Engn, TR-15300 Bucak, Burdur, Turkey</affiliation>
    </creator>
    <creator>
      <creatorName>Gok, Halil Zeki</creatorName>
      <givenName>Halil Zeki</givenName>
      <familyName>Gok</familyName>
      <affiliation>Burdur Mehmet Akif Ersoy Univ, Bucak Fac Technol, Dept Biomed Engn, TR-15300 Bucak, Burdur, Turkey</affiliation>
    </creator>
  </creators>
  <titles>
    <title>Readily Accessible Mesoporous Silica Nanoparticles Supported Chiral Urea-Amine Bifunctional Catalysts For Enantioselective Reactions</title>
  </titles>
  <publisher>Aperta</publisher>
  <publicationYear>2020</publicationYear>
  <dates>
    <date dateType="Issued">2020-01-01</date>
  </dates>
  <resourceType resourceTypeGeneral="Text">Journal article</resourceType>
  <alternateIdentifiers>
    <alternateIdentifier alternateIdentifierType="url">https://aperta.ulakbim.gov.tr/record/5553</alternateIdentifier>
  </alternateIdentifiers>
  <relatedIdentifiers>
    <relatedIdentifier relatedIdentifierType="DOI" relationType="IsIdenticalTo">10.1002/aoc.6015</relatedIdentifier>
  </relatedIdentifiers>
  <rightsList>
    <rights rightsURI="http://www.opendefinition.org/licenses/cc-by">Creative Commons Attribution</rights>
    <rights rightsURI="info:eu-repo/semantics/openAccess">Open Access</rights>
  </rightsList>
  <descriptions>
    <description descriptionType="Abstract">The main objective of this study is to develop readily accessible and recyclable solid catalysts for enantioselective reactions. To achieve this, magnetic MCM-41 and non-magnetic SBA-15 mesoporous supports were prepared, then mesoporous silica supported chiral urea-amine bifunctional catalysts were synthesized by grafting of chiral urea-amine ligand onto SBA-15 and magnetic MCM-41. The magnetic and non-magnetic supports and so-prepared solid catalysts were characterized by using different methods such as N(2)sorption measurements, Fourier transform infrared spectroscopy (FT-IR), field emission scanning electron microscope-energy dispersive X-ray analysis (FESEM-EDX), X-ray diffraction (XRD), and thermogravimetric analysis (TGA). Results showed that (1R, 2R) or (1S, 2S)-1,2-diphenylethane-1,2-diamine was successively immobilized onto magnetic MCM-41 and SBA-15 pores. The heterogeneous chiral solid catalysts and their homogenous counterparts exhibited high activities both enantioselective transfer hydrogenation reaction (up to 99% conversion and 65%ee) and enantioselective Michael reaction (up to 98% conversion and 26%ee). Moreover, the SBA-15 supported solid catalysts were separated from the reaction mixture by simple filtration, whereas the magnetic MCM-41 supported solid catalysts were separated by simple magnetic decantation and reused in three consecutive catalytic experiments.</description>
  </descriptions>
</resource>