Synthesis of environmentally friendly, efficient and highly recyclable Lewis acid-type calix[4]arene catalysts containing flexible or bulky groups for the Mannich reaction

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dc.contributor.authorSayın, Serkan
dc.contributor.authorYılmaz, Mustafa
dc.date.accessioned2020-03-26T19:42:45Z
dc.date.available2020-03-26T19:42:45Z
dc.date.issued2017
dc.departmentSelçuk Üniversitesien_US
dc.description.abstractTwo new calix[4] arene-based Lewis acid-type catalysts containing flexible and bulky groups (2 and 3) were successfully synthesized. Their structures were characterized using FTIR, H-1-NMR, COSY-NMR, C-13-NMR, APT-NMR, and elemental analysis techniques. Moreover, to provide easily recyclable, environmentally benign, cost effective and reusable catalysts, these calix[4] arene-based Lewis acid-type catalysts were grafted onto epoxyl-functionalized silica-coated Fe3O4 magnetic nanoparticles (EPPTMS-MN) to afford their corresponding calixarene-grafted magnetic nanoparticles (TMAC[4] Bu-t-MNP and P(Ph)(3)C[4] Bu-t-MNP). FTIR, TGA, TEM, VSM and elemental analysis techniques were performed to confirm their structures. In addition, the catalytic capabilities of four Lewis acid-type calixarene catalysts were evaluated in a three component Mannich reaction of benzaldehyde with aniline and acetophenone in aqueous media without co-solvents. The association of the effects of functional groups (flexible and bulky), molar equivalents, amount of water used, and reaction durations on their catalytic efficacies were also evaluated.en_US
dc.identifier.doi10.1039/c6ra28290cen_US
dc.identifier.endpage10756en_US
dc.identifier.issn2046-2069en_US
dc.identifier.issue18en_US
dc.identifier.scopusqualityQ2en_US
dc.identifier.startpage10748en_US
dc.identifier.urihttps://dx.doi.org/10.1039/c6ra28290c
dc.identifier.urihttps://hdl.handle.net/20.500.12395/35511
dc.identifier.volume7en_US
dc.identifier.wosWOS:000395796700017en_US
dc.identifier.wosqualityQ2en_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakScopusen_US
dc.language.isoenen_US
dc.publisherROYAL SOC CHEMISTRYen_US
dc.relation.ispartofRSC ADVANCESen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/openAccessen_US
dc.selcuk20240510_oaigen_US
dc.titleSynthesis of environmentally friendly, efficient and highly recyclable Lewis acid-type calix[4]arene catalysts containing flexible or bulky groups for the Mannich reactionen_US
dc.typeArticleen_US

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