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DC Field | Value | Language |
---|---|---|
dc.contributor.author | Gerber, Roman | - |
dc.contributor.author | Blacque, Olivier | - |
dc.contributor.author | Frech Nabold, Christian M. | - |
dc.date.accessioned | 2018-09-12T12:12:04Z | - |
dc.date.available | 2018-09-12T12:12:04Z | - |
dc.date.issued | 2011 | - |
dc.identifier.issn | 1477-9226 | de_CH |
dc.identifier.issn | 1477-9234 | de_CH |
dc.identifier.uri | https://digitalcollection.zhaw.ch/handle/11475/10464 | - |
dc.description.abstract | The 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.iso | en | de_CH |
dc.publisher | Royal Society of Chemistry | de_CH |
dc.relation.ispartof | Dalton Transactions | de_CH |
dc.rights | Licence according to publishing contract | de_CH |
dc.subject.ddc | 540: Chemie | de_CH |
dc.title | Negishi cross-coupling reaction catalyzed by an aliphatic, phosphine based pincer complex of palladium biaryl formation via cationic pincer-type PdIV intermediates | de_CH |
dc.type | Beitrag in wissenschaftlicher Zeitschrift | de_CH |
dcterms.type | Text | de_CH |
zhaw.departement | Life Sciences und Facility Management | de_CH |
dc.identifier.doi | 10.1039/c1dt10398a | de_CH |
dc.identifier.pmid | 21691648 | de_CH |
zhaw.funding.eu | No | de_CH |
zhaw.issue | 35 | de_CH |
zhaw.originated.zhaw | No | de_CH |
zhaw.pages.end | 9003 | de_CH |
zhaw.pages.start | 8996 | de_CH |
zhaw.publication.status | publishedVersion | de_CH |
zhaw.volume | 40 | de_CH |
zhaw.publication.review | Peer review (Publikation) | de_CH |
Appears in collections: | Publikationen Life Sciences und Facility Management |
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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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