New method for the synthesis of chromeno[4,3-b]chromene derivatives via multicomponent reaction promoted by niobium pentachloride

dc.contributorUniversidade Estadual Paulista (Unesp)
dc.date.accessioned2018-12-11T17:09:33Z
dc.date.available2018-12-11T17:09:33Z
dc.date.created2018-12-11T17:09:33Z
dc.date.issued2017-01-01
dc.identifierTetrahedron Letters, v. 58, n. 9, p. 894-897, 2017.
dc.identifier1873-3581
dc.identifier0040-4039
dc.identifierhttp://hdl.handle.net/11449/174148
dc.identifier10.1016/j.tetlet.2017.01.062
dc.identifier2-s2.0-85010955739
dc.description.abstractChromeno[4,3-b]chromene derivatives were synthesized from multicomponent reaction between 4-hydroxycoumarin, aryl aldehyde derivatives and 1,3-cyclohexanedione promoted by niobium pentachloride. This new method is simple, cost-effective, provides good yields with good substrate generality and can be conducted in short reaction times.
dc.languageeng
dc.relationTetrahedron Letters
dc.relation0,683
dc.rightsAcesso restrito
dc.sourceScopus
dc.subjectChromene
dc.subjectCoumarin
dc.subjectLewis acid
dc.subjectMulticomponent reactions
dc.subjectNiobium pentachloride
dc.titleNew method for the synthesis of chromeno[4,3-b]chromene derivatives via multicomponent reaction promoted by niobium pentachloride
dc.typeArtículos de revistas


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