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dc.contributor.authorSelvaraju, Manikandanen_US
dc.contributor.authorShiu, Wei-Shuenen_US
dc.contributor.authorKulkarni, Manohar V.en_US
dc.contributor.authorSun, Chung-Mingen_US
dc.date.accessioned2014-12-08T15:32:46Z-
dc.date.available2014-12-08T15:32:46Z-
dc.date.issued2013en_US
dc.identifier.issn2046-2069en_US
dc.identifier.urihttp://hdl.handle.net/11536/22901-
dc.identifier.urihttp://dx.doi.org/10.1039/c3ra42658ken_US
dc.description.abstractA telescoped sequence involves the reaction of cationic imidazolium attached 2-aminobenzimidazoles with in situ generated 1,1-dicyano-2-aryl ethylenes was explored for the regioselective synthesis of pyrimido[1,2-a]benzimidazoles. The perceived regioselectivity was presumed in terms of preferential Michael addition of 2-aminobenzimidazole followed by intramolecular annulation to the exclusive formation of 4-iminopyrimidines on an ionic liquid support. A plausible mechanistic pathway for their selective formation is discussed and fully supported by X-ray analysis. The present strategy reveals both the amine function and the ring nitrogen in substituted 2-aminobenzimidazoles are active sites for nucleophilic attack on alpha,beta-unsaturated nitriles.en_US
dc.language.isoen_USen_US
dc.titleIonic liquid supported synthesis of tricyclic pyrimido [1,2-a]benzimidazoles by a telescoped Michael/hetero annulation strategyen_US
dc.typeArticleen_US
dc.identifier.doi10.1039/c3ra42658ken_US
dc.identifier.journalRSC ADVANCESen_US
dc.citation.volume3en_US
dc.citation.issue44en_US
dc.citation.spage22314en_US
dc.citation.epage22318en_US
dc.contributor.department應用化學系zh_TW
dc.contributor.departmentDepartment of Applied Chemistryen_US
dc.identifier.wosnumberWOS:000326056600164-
dc.citation.woscount0-
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