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Mn-II and Cu-II complexes with arylhydrazones of active methylene compounds as effective heterogeneous catalysts for solvent- and additive-free microwave-assisted peroxidative oxidation of alcohols

2015Journal article Restricted access
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dc.contributor.authorMahmudov, Kamran
dc.contributor.authorSutradhar, Manas
dc.contributor.authorMartins, Luisa
dc.contributor.authorSilva, Maria de Fátima C. Guedes da
dc.contributor.authorRibera, Alice
dc.contributor.authorNunes, Ana V. M.
dc.contributor.authorGahramanova, Shahnaz
dc.contributor.authorMarchetti, Fabio
dc.contributor.authorPombeiro, Armando
dc.date.accessioned2016-04-28T12:41:28Z
dc.date.available2016-04-28T12:41:28Z
dc.date.issued2015
dc.description.abstractA one-pot template reaction of sodium 2-(2-(dicyanomethylene) hydrazinyl) benzenesulfonate (NaHL1) with water and manganese(II) acetate tetrahydrate led to the mononuclear complex [Mn(H2O)(6)](HL1a)(2)center dot 4H(2)O (1), where (HL1a) -= 2-(SO3-)C6H4(NH)=N=C(C N) (CONH2) is the carboxamide species derived from nucleophilic attack of water on a cyano group of (HL1) . The copper tetramer [Cu-4(H2O)(10)(-) (1 kappa N: kappa O-2: kappa O, 2 kappa N: k(O)-L-2)(2)]center dot 2H(2)O (2) was obtained from reaction of Cu(NO3)(2)center dot 2.5H(2)O with sodium 5-(2( 4,4-dimethyl-2,6-dioxocyclohexylidene) hydrazinyl)-4-hydroxybenzene-1,3-disulfonate (Na2H2L2). Both complexes were characterized by elemental analysis, IR spectroscopy, ESI-MS and single crystal X-ray diffraction. They exhibit a high catalytic activity for the solvent-and additive-free microwave (MW) assisted oxidation of primary and secondary alcohols with tert-butylhydroperoxide, leading to yields of the oxidized products up to 85.5% and TOFs up to 1.90 x 103 h(-1) after 1 h under low power (5-10 W) MW irradiation. Moreover, the heterogeneous catalysts are easily recovered and reused, at least for three consecutive cycles, maintaining 89% of the initial activity and a high selectivity.pt_PT
dc.identifier.citationMAHMUDOV, Kamran T.; [et al] - Mn-II and Cu-II complexes with arylhydrazones of active methylene compounds as effective heterogeneous catalysts for solvent- and additive-free microwave-assisted peroxidative oxidation of alcohols. RSC Advances. ISSN 2046-2069. Vol. 5, N.º 33 (2015), pp. 25979-25987pt_PT
dc.identifier.doi10.1039/C5RA02667Apt_PT
dc.identifier.issn2046-2069
dc.identifier.urihttp://hdl.handle.net/10400.21/6121
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherRoyal Soc Chemistrypt_PT
dc.subjectAerobic oxidationpt_PT
dc.subjectCopper(Ii) complexespt_PT
dc.subjectBenzylic alcoholspt_PT
dc.subjectMild conditionspt_PT
dc.subjectNitroxyl radicalspt_PT
dc.subjectIron complexespt_PT
dc.subjectBeta-diketonespt_PT
dc.subjectLigandspt_PT
dc.subjectAldehydespt_PT
dc.subjectTempopt_PT
dc.titleMn-II and Cu-II complexes with arylhydrazones of active methylene compounds as effective heterogeneous catalysts for solvent- and additive-free microwave-assisted peroxidative oxidation of alcoholspt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.citation.endPage25987pt_PT
oaire.citation.issue33pt_PT
oaire.citation.startPage25979pt_PT
oaire.citation.titleRSC Advancespt_PT
oaire.citation.volume5pt_PT
person.familyNameMahmudov
person.familyNameSutradhar
person.familyNameMartins
person.familyNameGahramanova
person.familyNamePombeiro
person.givenNameKamran
person.givenNameManas
person.givenNameLuisa
person.givenNameShahnaz
person.givenNameArmando
person.identifier863180
person.identifier637885
person.identifier.ciencia-idCD1F-CB64-9EA5
person.identifier.ciencia-idD518-3A34-8E31
person.identifier.ciencia-idE218-E297-A4EA
person.identifier.ciencia-id8311-38FA-CEFB
person.identifier.orcid0000-0003-0743-6520
person.identifier.orcid0000-0003-3349-9154
person.identifier.orcid0000-0002-5403-9352
person.identifier.orcid0000-0001-7955-4118
person.identifier.orcid0000-0001-8323-888X
person.identifier.ridI-1409-2013
person.identifier.ridM-4089-2013
person.identifier.ridG-6210-2011
person.identifier.ridN-4706-2018
person.identifier.ridI-5945-2012
person.identifier.scopus-author-id24468352000
person.identifier.scopus-author-id14053084900
person.identifier.scopus-author-id8650947800
person.identifier.scopus-author-id56897125600
person.identifier.scopus-author-id7006067269
rcaap.rightsclosedAccesspt_PT
rcaap.typearticlept_PT
relation.isAuthorOfPublication71d8ce81-a614-49c5-8606-e351da465649
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