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dc.contributor.authorAndrés García, José María 
dc.contributor.authorMaestro Fernández, Alicia 
dc.contributor.authorValle Álvarez, María
dc.contributor.authorPedrosa Sáez, Rafael 
dc.date.accessioned2018-10-29T13:49:37Z
dc.date.issued2018
dc.identifier.citationJournal of Organic Chemistry, 2018, 83 (10), pp 5546–5557es
dc.identifier.issn0022-3263es
dc.identifier.urihttp://uvadoc.uva.es/handle/10324/32370
dc.descriptionProducción Científicaes
dc.description.abstractNovel styryl-substituted thioureas and squaramides were obtained in three steps from commercially available 4-hydroxy-3,5-dichloroaniline. These organocatalysts promote cascade reactions in high yields and excellent stereoselection. By using only a 5 mol % loading of catalyst, it is possible to obtain 2,3,4-trisubstituted benzopyrans by reaction of α-amido sulfones derived from salicyladehydes and nitrostyrenes or 2,3,4-trisubstituted 4H-chromenes by reaction of the same α-amido sulfones with (phenylsulfonyl)acetonitrile in excellent diastereo- and enantioselectivities. Two polymeric thioureas and squaramides were prepared by copolymerization of the best monomeric catalysts with styrene and divinylbenzene and used for the same transformations. These polymers behave also as excellent stereoselective catalysts that can be recovered and reused for five cycles.es
dc.format.mimetypeapplication/pdfes
dc.language.isoenges
dc.publisherAmerican Chemical Societyes
dc.rights.accessRightsinfo:eu-repo/semantics/openAccesses
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/
dc.subject.classificationAminobenzopiranoses
dc.subject.classificationAminobenzopyraneses
dc.titleChiral Bifunctional Thioureas and Squaramides and Their Copolymers as Recoverable Organocatalysts. Stereoselective Synthesis of 2-Substituted 4-Amino-3-nitrobenzopyrans and 3-Functionalized 3,4-Diamino-4H-Chromeneses
dc.typeinfo:eu-repo/semantics/articlees
dc.identifier.doihttps://doi.org/10.1021/acs.joc.8b00567es
dc.relation.publisherversionhttps://pubs.acs.org/doi/10.1021/acs.joc.8b00567es
dc.peerreviewedSIes
dc.description.embargo2019-11-11es
dc.description.lift2019-11-11
dc.description.projectMinisterio de Economía, Industria y Competitividad (Project FEDER-CTQ2014-59870-P)es
dc.description.projectJunta de Castilla y León (programa de apoyo a proyectos de investigación - Project FEDER-VA115P17)es
dc.rightsAttribution-NonCommercial-NoDerivatives 4.0 International


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