Calixarene-based chiral phase-transfer catalysts derived from cinchona alkaloids for enantioselective synthesis of alpha-amino acids

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dc.contributor.authorBozkurt, Selahattin
dc.contributor.authorDurmaz, Mustafa
dc.contributor.authorYılmaz, Mustafa
dc.contributor.authorSirit, Abdülkadir
dc.date.accessioned2020-03-26T17:26:27Z
dc.date.available2020-03-26T17:26:27Z
dc.date.issued2008
dc.departmentSelçuk Üniversitesien_US
dc.description.abstractThe synthesis of the first calixarene-based chiral phase-transfer catalysts derived from cinchona alkaloids has been achieved in two steps from p-tert-butylcalix[4]arene. The catalytic efficiency of the chiral calix[4]arenes 3a-c was evaluated by carrying out the phase-transfer alkylation of N-(diphenylmethylene)glycine ethyl ester with benzyl bromide. Various factors that affect the chemical yield and enantio selectivity were also examined. Benzylation of glycine imine 4 using calix[4]arene- based dimeric catalyst 3a as a chiral phase-transfer catalyst in toluene/CHCl3 mixture (7:3 v/v) at 0 degrees C gave the best enantioselectivities and yields in the presence of aqueous NaOH. (C) 2008 Elsevier Ltd. All rights reserved.en_US
dc.identifier.doi10.1016/j.tetasy.2008.02.006en_US
dc.identifier.endpage623en_US
dc.identifier.issn0957-4166en_US
dc.identifier.issue5en_US
dc.identifier.scopusqualityN/Aen_US
dc.identifier.startpage618en_US
dc.identifier.urihttps://dx.doi.org/10.1016/j.tetasy.2008.02.006
dc.identifier.urihttps://hdl.handle.net/20.500.12395/22234
dc.identifier.volume19en_US
dc.identifier.wosWOS:000254802000015en_US
dc.identifier.wosqualityQ2en_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakScopusen_US
dc.language.isoenen_US
dc.publisherPERGAMON-ELSEVIER SCIENCE LTDen_US
dc.relation.ispartofTETRAHEDRON-ASYMMETRYen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.selcuk20240510_oaigen_US
dc.titleCalixarene-based chiral phase-transfer catalysts derived from cinchona alkaloids for enantioselective synthesis of alpha-amino acidsen_US
dc.typeArticleen_US

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