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Porous carbons-derived from vegetal biomass in the synthesis of quinoxalines. Mechanistic insights

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dc.contributor.authorGodino Ojer, Marina
dc.contributor.authorBlazquez García, R.
dc.contributor.authorMatos, Ines
dc.contributor.authorBernardo, M.
dc.contributor.authorFonseca I.M.
dc.contributor.authorPérez Mayoral, María Elena
dc.date.accessioned2025-01-09T13:01:50Z
dc.date.available2025-01-09T13:01:50Z
dc.date.issued2020-09-01
dc.descriptionEsta es la versión aceptada del artículo. La versión registrada fue publicada por primera vez en Catalysis Today, Volume 354, 2020, Pages 90-99, ISSN 0920-5861, está disponible en línea en el sitio web del editor: https://doi.org/10.1016/j.cattod.2019.06.043. This is the accepted version of the article. The registered version was first published in Catalysis Today, Volume 354, 2020, Pages 90-99, ISSN 0920-5861, is available online on the publisher's website: https://doi.org/10.1016/j.cattod.2019.06.043.
dc.description.abstractWe report herein for the first-time acid biomass-derived carbons from vegetal biomass, with high developed porosity, prepared through integrating method comprising pyrolysis and surface phosphonation, able to efficiently catalyze the synthesis of quinoxalines from 1,2-diamines and α-hydroxi ketones, under aerobic conditions. The obtained results indicate that the reaction is mainly driven by a combination of acid function strength and textural properties in terms of conversion and selectivity. Furthermore, our experimental and theoretical observations suggest that the preferred reaction pathway for this transformation, in the presence of the investigated acid carbon catalysts, involves cascade reactions including imination reaction between reactants, successive imine-enamine and keto-enol tautomerisms, heterocyclization followed by dehydration, and aromatization. While the acid sites seem to be a relevant role in each reaction step, the system formed by activated carbon and molecular oxygen could be behind the last oxidative reaction to give the corresponding nitrogen heterocycles.en
dc.description.versionversión final
dc.identifier.citationM. Godino-Ojer, R. Blazquez-García, I. Matos, M. Bernardo, I.M. Fonseca, E. Pérez Mayoral, Porous carbons-derived from vegetal biomass in the synthesis of quinoxalines. Mechanistic insights, Catalysis Today, Volume 354, 2020, Pages 90-99, ISSN 0920-5861, https://doi.org/10.1016/j.cattod.2019.06.043.
dc.identifier.doihttps://doi.org/10.1016/j.cattod.2019.06.043
dc.identifier.issn0920-5861
dc.identifier.urihttps://hdl.handle.net/20.500.14468/25152
dc.journal.titleCatalysis Today
dc.journal.volume354
dc.language.isoen
dc.page.final99
dc.page.initial90
dc.publisherElsevier
dc.relation.centerFacultades y escuelas::Facultad de Ciencias
dc.relation.departmentQuímica Inorgánica y Química Técnica
dc.rightsinfo:eu-repo/semantics/openAccess
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/deed.es
dc.subject23 Química
dc.subject.keywordsPorous carbonsen
dc.subject.keywordsnanocatalystsen
dc.subject.keywordsfine chemicalsen
dc.subject.keywordsquinoxalinesen
dc.subject.keywordscomputational methodsen
dc.titlePorous carbons-derived from vegetal biomass in the synthesis of quinoxalines. Mechanistic insightsen
dc.typeartículoes
dc.typejournal articleen
dspace.entity.typePublication
relation.isAuthorOfPublicationa0e31477-6806-4f00-afdc-90c4136f232e
relation.isAuthorOfPublication.latestForDiscoverya0e31477-6806-4f00-afdc-90c4136f232e
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