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dc.contributor.authorGerber, Roman-
dc.contributor.authorBlacque, Olivier-
dc.contributor.authorFrech Nabold, Christian M.-
dc.date.accessioned2018-09-12T12:12:04Z-
dc.date.available2018-09-12T12:12:04Z-
dc.date.issued2011-
dc.identifier.issn1477-9226de_CH
dc.identifier.issn1477-9234de_CH
dc.identifier.urihttps://digitalcollection.zhaw.ch/handle/11475/10464-
dc.description.abstractThe aliphatic, phosphine-based pincer complex [(C(10)H(13)-1,3-(CH(2)P(Cy(2))(2))Pd(Cl)] (1) is a highly active Negishi catalyst, enable to quantitatively couple various electronically activated, non-activated, deactivated, sterically hindered and functionalized aryl bromides with various diarylzinc reagents within short reaction times and low catalyst loadings. Experimental observations strongly indicate that a molecular mechanism is operative with initial chloride dissociation of 1 and formation of the cationic T-shaped 14e(-) complex [(C(10)H(13)-1,3-(CH(2)P(C(6)H(11))(2))(2))Pd](+) (B), which undergoes oxidative addition of an aryl bromide (Ar'Br) to yield the cationic, penta-coordinated aryl bromide pincer complexes of type [(C(10)H(13)-1,3-(CH(2)P(Cy(2))(2))Pd(Br)(aryl')](+) (C) with the metal center in the oxidation state of +IV and the aryl unit in cis position relative to the aliphatic pincer core. Subsequent transmetalation with Zn(aryl)(2) result in the cationic diaryl pincer complexes of type [(C(10)H(13)-1,3-(CH(2)P(Cy(2))(2))Pd(aryl)(aryl')](+) (D), which reductively eliminate the coupling products, thereby regenerating the catalyst. The neutral square planar aryl pincer complex--a possible key intermediate in the catalytic cycle--was found to be reversibly formed in the reaction mixture but is not involved in the catalytic mechanism. Similarly, palladium nanoparticles as the catalytically active form of 1 could have been excluded.de_CH
dc.language.isoende_CH
dc.publisherRoyal Society of Chemistryde_CH
dc.relation.ispartofDalton Transactionsde_CH
dc.rightsLicence according to publishing contractde_CH
dc.subject.ddc540: Chemiede_CH
dc.titleNegishi cross-coupling reaction catalyzed by an aliphatic, phosphine based pincer complex of palladium biaryl formation via cationic pincer-type PdIV intermediatesde_CH
dc.typeBeitrag in wissenschaftlicher Zeitschriftde_CH
dcterms.typeTextde_CH
zhaw.departementLife Sciences und Facility Managementde_CH
dc.identifier.doi10.1039/c1dt10398ade_CH
dc.identifier.pmid21691648de_CH
zhaw.funding.euNode_CH
zhaw.issue35de_CH
zhaw.originated.zhawNode_CH
zhaw.pages.end9003de_CH
zhaw.pages.start8996de_CH
zhaw.publication.statuspublishedVersionde_CH
zhaw.volume40de_CH
zhaw.publication.reviewPeer review (Publikation)de_CH
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Gerber, R., Blacque, O., & Frech Nabold, C. M. (2011). Negishi cross-coupling reaction catalyzed by an aliphatic, phosphine based pincer complex of palladium biaryl formation via cationic pincer-type PdIV intermediates. Dalton Transactions, 40(35), 8996–9003. https://doi.org/10.1039/c1dt10398a
Gerber, R., Blacque, O. and Frech Nabold, C.M. (2011) ‘Negishi cross-coupling reaction catalyzed by an aliphatic, phosphine based pincer complex of palladium biaryl formation via cationic pincer-type PdIV intermediates’, Dalton Transactions, 40(35), pp. 8996–9003. Available at: https://doi.org/10.1039/c1dt10398a.
R. Gerber, O. Blacque, and C. M. Frech Nabold, “Negishi cross-coupling reaction catalyzed by an aliphatic, phosphine based pincer complex of palladium biaryl formation via cationic pincer-type PdIV intermediates,” Dalton Transactions, vol. 40, no. 35, pp. 8996–9003, 2011, doi: 10.1039/c1dt10398a.
GERBER, Roman, Olivier BLACQUE und Christian M. FRECH NABOLD, 2011. Negishi cross-coupling reaction catalyzed by an aliphatic, phosphine based pincer complex of palladium biaryl formation via cationic pincer-type PdIV intermediates. Dalton Transactions. 2011. Bd. 40, Nr. 35, S. 8996–9003. DOI 10.1039/c1dt10398a
Gerber, Roman, Olivier Blacque, and Christian M. Frech Nabold. 2011. “Negishi Cross-Coupling Reaction Catalyzed by an Aliphatic, Phosphine Based Pincer Complex of Palladium Biaryl Formation via Cationic Pincer-Type PdIV Intermediates.” Dalton Transactions 40 (35): 8996–9003. https://doi.org/10.1039/c1dt10398a.
Gerber, Roman, et al. “Negishi Cross-Coupling Reaction Catalyzed by an Aliphatic, Phosphine Based Pincer Complex of Palladium Biaryl Formation via Cationic Pincer-Type PdIV Intermediates.” Dalton Transactions, vol. 40, no. 35, 2011, pp. 8996–9003, https://doi.org/10.1039/c1dt10398a.


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