Graphene-based recyclable and bifunctional heterogeneous chiral catalyst for direct asymmetric aldol reaction

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dc.contributor.authorAzlouk, Manel
dc.contributor.authorDurmaz, Mustafa
dc.contributor.authorZor, Erhan
dc.contributor.authorBingol, Haluk
dc.date.accessioned2024-02-23T14:13:08Z
dc.date.available2024-02-23T14:13:08Z
dc.date.issued2020
dc.departmentNEÜen_US
dc.description.abstractApplication of metal-free heterogeneous asymmetric catalysis is of great interest in the field of asymmetric synthesis. Herein, two novel graphene-supported praline-based bifunctional carbocatalysts were prepared by post-grafting c-proline onto graphene oxide sheets via organoamine-functIonalized graphene oxide (GO-NH2) and reduced graphene oxide (GO-NH2). Different methods such as Fourier-transform infrared spectroscopy (FT-IR), Raman spectroscopy, X-ray photoelectron spectroscopy (XPS), scanning electron microscopy (SEM) and transmission electron spectroscopy (TEM) were employed to examine the surface functionalization of GO. The catalytic properties of these materials were investigated in the direct asymmetric aldol reaction. r-proline grafted heterogeneous catalyst, GO-Pro, was found to be an efficient and powerful organocatalyst for the enantioselective aldol reaction under mild conditions in hexane and afforded the corresponding aldol adducts with satisfactory isolated yields (up to 88%) and enantiomeric excesses (up to 85%). Furthermore, graphene-based carbocatalyst could be recovered and recycled easily by a simple washing procedure and re-used for several times without substantial reduction in its catalytic activity.en_US
dc.description.sponsorshipScientific and Technological Research Council of Turkey [TUBITAK-117Z406]en_US
dc.description.sponsorshipThis work was supported by the Scientific and Technological Research Council of Turkey (TUBITAK-117Z406).en_US
dc.identifier.doi10.1016/j.matchemphys.2019.122298
dc.identifier.issn0254-0584
dc.identifier.issn1879-3312
dc.identifier.scopus2-s2.0-85073684029en_US
dc.identifier.scopusqualityQ1en_US
dc.identifier.urihttps://doi.org/10.1016/j.matchemphys.2019.122298
dc.identifier.urihttps://hdl.handle.net/20.500.12452/12321
dc.identifier.volume239en_US
dc.identifier.wosWOS:000503099500144en_US
dc.identifier.wosqualityQ2en_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakScopusen_US
dc.language.isoenen_US
dc.publisherElsevier Science Saen_US
dc.relation.ispartofMaterials Chemistry And Physicsen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.subjectMetal-Free Enantioselective Catalysisen_US
dc.subjectHeterogeneous Catalysten_US
dc.subjectGraphene Oxideen_US
dc.subjectAsymmetric Aldol Reactionen_US
dc.titleGraphene-based recyclable and bifunctional heterogeneous chiral catalyst for direct asymmetric aldol reactionen_US
dc.typeArticleen_US

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