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dc.contributor.authorSilva, V. L. .-
dc.contributor.authorSilva, A. M. S.-
dc.contributor.authorPinto, D. C. G. A.-
dc.contributor.authorCavaleiro, José A. S.-
dc.contributor.authorElguero, José-
dc.date.accessioned2013-02-07T07:54:40Z-
dc.date.available2013-02-07T07:54:40Z-
dc.date.issued2009-
dc.identifierdoi: 10.1007/s00706-008-0002-9-
dc.identifierissn: 0026-9247-
dc.identifier.citationMonatshefte für Chemie 140: 87- 95 (2009)-
dc.identifier.urihttp://hdl.handle.net/10261/66214-
dc.description.abstractAn efficient synthesis method for the preparation of a series of new (Z)- and (E)-3(5)-(2-hydroxyphenyl)-4-styrylpyrazoles was developed. The reaction of (Z)- and (E)-3-styrylchromones with hydrazine hydrate afforded the corresponding (Z)- and (E)-3(5)-(2-hydroxyphenyl)-4-styrylpyrazoles, except for nitro derivatives, where both (Z)- and (E)-4′-nitro-3-styrylchromones afforded (E)-3(5)-(2-hydroxyphenyl)-4-(4-nitrostyryl)pyrazoles. The reaction mechanism for these transformations is discussed and the stereochemistries of all products were established by NMR experiments. © 2008 Springer-Verlag.-
dc.publisherSpringer-
dc.rightsclosedAccess-
dc.titleSynthesis of (E)- and (Z)-3(5)-(2-hydroxyphenyl)-4-styrylpyrazoles-
dc.typeartículo-
dc.identifier.doi10.1007/s00706-008-0002-9-
dc.relation.publisherversionhttp://dx.doi.org/10.1007/s00706-008-0002-9-
dc.date.updated2013-02-07T07:54:40Z-
dc.description.versionPeer Reviewed-
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