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Copper(II) and cobalt(II) tetrazole-saccharinate complexes as effective catalysts for oxidation of secondary alcohols

2016-12Journal article Restricted access
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dc.contributor.authorFrija, Luis M. T.
dc.contributor.authorAlegria, Elisabete C. B. A.
dc.contributor.authorSutradhar, Manas
dc.contributor.authorCristiano, Maria De Lurdes
dc.contributor.authorIsmael, Amin
dc.contributor.authorKopylovich, Maximilian N.
dc.contributor.authorPombeiro, Armando J. L.
dc.date.accessioned2017-04-07T15:55:34Z
dc.date.available2017-04-07T15:55:34Z
dc.date.issued2016-12
dc.description.abstractMononuclear Cu(II) and Co(II) complexes comprising 2-methyltetrazole-saccharinate bidentate N,N-chelating ligand have been synthesized for the first time and tested as homogeneous catalysts for oxidation of secondary alcohols in a solvent-free and microwave assisted protocol using aqueous tertbutyl hydroperoxide (TBHP) as oxidant. The developed catalytic system exhibits broad functional group compatibility, allowing efficient and selective conversion of a variety of secondary alcohols, including allylic ones, into the corresponding ketones. With typical 0.2 mol% content of the catalyst and under 20-50 W microwave irradiation, most reactions are complete within 10 min, presenting TONs up to 5.5 x 10(2) and TOFs up to 1.1 x 10(4)h(-1). No additives and co-oxidants have been used, while TEMPO (2,2,6,6-tetramethyl-1-piperidinyloxyl) acts as inhibitor in most cases. A plausible reaction mechanism involving the new catalytic systems is outlined. (C) 2016 Elsevier B.V. All rights reserved.
dc.identifier.doi10.1016/j.molcata.2016.10.023
dc.identifier.issn1381-1169
dc.identifier.urihttp://hdl.handle.net/10400.1/9160
dc.language.isoeng
dc.peerreviewedyes
dc.relationMetal-mediated and H(Hal)-bond assisted syntheses of new coordination compounds
dc.relationMultifunctional Azole-based Frameworks for Dynamic Catalysis
dc.relation.isbasedonWOS:000390634100032
dc.titleCopper(II) and cobalt(II) tetrazole-saccharinate complexes as effective catalysts for oxidation of secondary alcohols
dc.typejournal article
dspace.entity.typePublication
oaire.awardTitleMetal-mediated and H(Hal)-bond assisted syntheses of new coordination compounds
oaire.awardTitleMultifunctional Azole-based Frameworks for Dynamic Catalysis
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/5876/UID%2FQUI%2F00100%2F2013/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/Investigador FCT/IF%2F01270%2F2013%2FCP1163%2FCT0007/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT//SFRH%2FBPD%2F99851%2F2014/PT
oaire.citation.endPage290
oaire.citation.startPage283
oaire.citation.titleJournal of Molecular Catalysis A: Chemical
oaire.citation.volume425
oaire.fundingStream5876
oaire.fundingStreamInvestigador FCT
person.familyNameCristiano
person.familyNameIsmael
person.givenNameMaria de Lurdes
person.givenNameAmin
person.identifier.ciencia-idE411-6006-5A01
person.identifier.orcid0000-0002-9447-2855
person.identifier.orcid0000-0002-7346-5998
person.identifier.ridG-2345-2012
person.identifier.ridA-8153-2013
person.identifier.scopus-author-id9238724800
person.identifier.scopus-author-id35203489500
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.nameFundação para a Ciência e a Tecnologia
project.funder.nameFundação para a Ciência e a Tecnologia
project.funder.nameFundação para a Ciência e a Tecnologia
rcaap.rightsrestrictedAccess
rcaap.typearticle
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