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dc.contributor.authorGodino Ojer, Marina
dc.contributor.authorBlazquez García, R.
dc.contributor.authorMatos, I.
dc.contributor.authorBernardo, M.
dc.contributor.authorFonseca, M.
dc.contributor.authorPérez Mayoral, E.
dc.date.accessioned2019-10-10T11:32:42Z
dc.date.available2019-10-10T11:32:42Z
dc.date.issued2019
dc.identifier.issn0920-5861spa
dc.identifier.urihttp://hdl.handle.net/10641/1690
dc.description.abstractWe report herein for the first-time acid biomass-derived carbons from vegetal biomass, with high developed porosity, prepared through the integrating method comprising pyrolysis and surface phosphonation, able to efficiently catalyze the synthesis of quinoxalines from 1,2-diamines and -hydroxi ketones, under aerobic conditions. The obtained results indicate that the type and number of acid sites drive the reaction 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 ceto-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 quinoxalines.spa
dc.language.isoengspa
dc.publisherCatalysis Todayspa
dc.rightsAtribución-NoComercial-SinDerivadas 3.0 España*
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/3.0/es/*
dc.subjectPorous carbonsspa
dc.subjectNanocatalystsspa
dc.subjectFine chemicalsspa
dc.subjectQuinoxalinesspa
dc.subjectComputational methodsspa
dc.titlePorous carbons-derived from vegetal biomass in the synthesis of quinoxalines. Mechanistic insights.spa
dc.typearticlespa
dc.description.versionpre-printspa
dc.rights.accessRightsopenAccessspa
dc.description.extent615 KBspa
dc.identifier.doi10.1016/j.cattod.2019.06.043spa


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