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Synthesis and characterization of copper(II) 4´-phenyl-terpyridine compounds and catalytic application for aerobic oxidation of benzylic alcohols

2014Journal article Restricted access
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dc.contributor.authorMa, Zhen
dc.contributor.authorWei, Lijuan
dc.contributor.authorAlegria, Elisabete
dc.contributor.authorMartins, Luisa
dc.contributor.authorGuedes Da Silva, M. Fátima C.
dc.contributor.authorPombeiro, Armando
dc.date.accessioned2015-08-24T13:54:08Z
dc.date.available2015-08-24T13:54:08Z
dc.date.issued2014
dc.description.abstractThe reactions between 4'-phenyl-terpyridine (L) and nitrate, acetate or chloride Cu(II) salts led to the formation of [Cu(NO3)(2)L] (1), [Cu(OCOCH3)(2)L]center dot CH2Cl2 (2 center dot CH2Cl2)and [CuCl2L]center dot[Cu(Cl)(mu-Cl)L](2) (3), respectively. Upon dissolving 1 in mixtures of DMSO-MeOH or EtOH-DMF the compounds [Cu(H2O){OS(CH3)(2)}L]-(NO3)(2) (4) and [Cu(HO)(CH3CH2OH)L](NO3) (5) were obtained, in this order. Reaction of 3 with AgSO3CF3 led to [CuCl(OSO2CF3)L] (6). The compounds were characterized by ESI-MS, IR, elemental analysis, electrochemical techniques and, for 2-6, also by single crystal X-ray diffraction. They undergo, by cyclic voltammetry, two single-electron irreversible reductions assigned to Cu(II) -> Cu(I)and Cu(I) -> Cu(0) and, for those of the same structural type, the reduction potential appears to correlate with the summation of the values of the Lever electrochemical EL ligand parameter, which is reported for the first time for copper complexes. Complexes 1-6 in combination with TEMPO (2,2,6,6-tetramethylpiperidinyl-1-oxyl radical) can exhibit a high catalytic activity, under mild conditions and in alkaline aqueous solution, for the aerobic oxidation of benzylic alcohols. Molar yields up to 94% (based on the alcohol) with TON values up to 320 were achieved after 22 h.por
dc.identifier.citationMA, Zhen; [et al] – Synthesis and characterization of copper(II) 4´-Phenyl-Terpyridine compounds and catalytic application for aerobic oxidation of Benzylic Alcohols. Dalton Transactions. ISSN: 1477-9226. Vol. 43, nr. 10 (2014), pp. 4048-4058por
dc.identifier.doi10.1039/c3dt53054j
dc.identifier.issn1477-9226
dc.identifier.issn1477-9234
dc.identifier.urihttp://hdl.handle.net/10400.21/4958
dc.language.isoengpor
dc.peerreviewedyespor
dc.publisherRoyal Society of Chemistrypor
dc.subjectSolid-state photoluminescencepor
dc.subjectCoordination-compoundspor
dc.subjectMild conditionspor
dc.subjectSilver(I)-2,2'/6',2''-terpyridine complexespor
dc.subjectElectrochemical parametrizationpor
dc.subjectCarboxyphenyl-terpyridinepor
dc.subjectCorresponding aldehydespor
dc.subjectMolecular-structurepor
dc.subjectBuilding-blockpor
dc.subjectLigandspor
dc.titleSynthesis and characterization of copper(II) 4´-phenyl-terpyridine compounds and catalytic application for aerobic oxidation of benzylic alcoholspor
dc.typejournal article
dspace.entity.typePublication
oaire.citation.endPage4058por
oaire.citation.issue10por
oaire.citation.startPage4048por
oaire.citation.titleDalton Transactionspor
oaire.citation.volume43por
person.familyNameAlegria
person.familyNameMartins
person.familyNameGuedes da Silva
person.familyNamePombeiro
person.givenNameElisabete
person.givenNameLuisa
person.givenNameM. Fátima C.
person.givenNameArmando
person.identifier863202
person.identifier637885
person.identifier789079
person.identifier.ciencia-id8C1F-851A-9F1C
person.identifier.ciencia-idE218-E297-A4EA
person.identifier.ciencia-id7619-8E8E-979A
person.identifier.ciencia-id8311-38FA-CEFB
person.identifier.orcid0000-0003-4060-1057
person.identifier.orcid0000-0002-5403-9352
person.identifier.orcid0000-0003-4836-2409
person.identifier.orcid0000-0001-8323-888X
person.identifier.ridE-9945-2012
person.identifier.ridG-6210-2011
person.identifier.ridH-8274-2012
person.identifier.ridI-5945-2012
person.identifier.scopus-author-id8315848300
person.identifier.scopus-author-id8650947800
person.identifier.scopus-author-id6701761571
person.identifier.scopus-author-id7006067269
rcaap.rightsclosedAccesspor
rcaap.typearticlepor
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