Estudos sobre o uso de NbCl5 como ácido de Lewis em reações de Povarov

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dc.contributor.authorSilva Filho, Luiz Carlos da [UNESP]
dc.contributor.authorFrenhe, Mayara [UNESP]
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.date.accessioned2016-03-02T12:57:52Z
dc.date.available2016-03-02T12:57:52Z
dc.date.issued2011
dc.description.abstractThe aim of this work was to investigate the use of NbCl5 as Lewis acid in cycloadittion reactions [Reaction Aza-Diels-Alder (Povarov)] between Schiff bases and enol ethers. Comparison of reaction yields, obtained products as well as reaction time with NbCl5 were also a key point on this work. In the aza-Diels-Alder reactions between Schiff bases and enol ethers (dihydropyran or dihydrofuran), the NbCl5 was an excellent catalyst for the synthesis of pyrano- and furanoquinoline derivatives. These derivatives are an important class of natural products that exhibit wide range of biological activity. The reactions were carried out at low concentration of niobium and in relatively short times, resulting in yields varying from 78 to 95%.en
dc.description.affiliationUniversidade Estadual Paulista Júlio de Mesquita Filho (UNESP), Faculdade de Ciências (FC), Departamento de Química, Bauru, SP, Brasil
dc.description.affiliationUnespUniversidade Estadual Paulista Júlio de Mesquita Filho (UNESP), Faculdade de Ciências (FC), Departamento de Química, Bauru, SP, Brasil
dc.description.sponsorshipFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.format.extent1-14
dc.identifierhttp://www.orbital.ufms.br/index.php/Chemistry/article/view/205
dc.identifier.citationOrbital: the Electronic Journal of Chemistry, v. 3, n. 1, p. 1-14, 2011.
dc.identifier.fileISSN1984-6428-2011-03-01-01-14.pdf
dc.identifier.issn1984-6428
dc.identifier.lattes9231608553951292
dc.identifier.lattes9154336767369306
dc.identifier.urihttp://hdl.handle.net/11449/134664
dc.language.isopor
dc.relation.ispartofOrbital: the Electronic Journal of Chemistry
dc.rights.accessRightsAcesso aberto
dc.sourceCurrículo Lattes
dc.subjectNiobium pentachlorideen
dc.subjectPovarov reactionsen
dc.subjectTetrahydroquinoline derivativesen
dc.subjectAza-Diels-Alder reactionsen
dc.titleEstudos sobre o uso de NbCl5 como ácido de Lewis em reações de Povarovpt
dc.typeArtigo
unesp.author.lattes9231608553951292
unesp.author.lattes9154336767369306
unesp.author.orcid0000-0001-6674-2160[1]
unesp.campusUniversidade Estadual Paulista (Unesp), Faculdade de Ciências, Baurupt
unesp.departmentQuímica - FCpt

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