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http://hdl.handle.net/2445/165417
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DC Field | Value | Language |
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dc.contributor.author | Clavero Puyal, Pau | - |
dc.contributor.author | Grabulosa, Arnald | - |
dc.contributor.author | Font Bardia, Ma. Mercedes | - |
dc.contributor.author | Muller, G. | - |
dc.date.accessioned | 2020-06-13T10:13:11Z | - |
dc.date.available | 2020-06-13T10:13:11Z | - |
dc.date.issued | 2014-09 | - |
dc.identifier.issn | 1381-1169 | - |
dc.identifier.uri | http://hdl.handle.net/2445/165417 | - |
dc.description.abstract | tThe synthesis of five optically pure P-stereogenic monophosphines of the type PPhArR (Ar = 2-p-terphenylyl (a), 1-pyrenyl (b); R = OMe, Me, i-Pr) is described. The ligands were fully characterisedand the absolute configurations of PPh(1-pyrenyl)R (3b and 5b; R = OMe and Me respectively) wereconfirmed by X-ray diffraction. The complexation of the monophosphines to Pd and Ru organometal-lic units yielded the neutral complexes [PdCl( 3-2-Me-allyl)P] (10-12) and [RuCl2( 6-p-cymene)P](16-18). Complete characterisation, including the crystal structure determination of [RuCl2( 6-p-cymene)(PMePh(2-p-terphenyl))] (17a) is provided. Neutral palladium complexes appeared as mixturesof two diastereomers in solution according to NMR. The synthesis and characterisation of four cationic[Pd( 3-2-Me-allyl)(P)2]PF6(13 and 14) is also described. The application of neutral Pd complexes tocatalytic styrene hydrovinylation afforded moderate conversions, high chemoselectivities (>92%) to 3-phenyl-1-butene and up to 43% ee with precursor 12a. Cationic Pd complexes were tested as catalyticprecursors in allylic substitution of rac-3-acetoxy-1,3-diphenyl-1-propene (rac-I), with the anion ofdimethylmalonate and benzylamine as nucleophiles, obtaining full conversions and up to 80% ee in alkyl-ation and 60% ee in amination with precursor 13a. Finally, ruthenium complexes were used as catalyticprecursors in transfer hydrogenation of acetophenone, with complete conversions after several hoursbut low enantioselectivities. | - |
dc.format.extent | 30 p. | - |
dc.format.mimetype | application/pdf | - |
dc.language.iso | eng | - |
dc.publisher | Elsevier B.V. | - |
dc.relation.isformatof | Versió postprint del document publicat a: https://doi.org/10.1016/j.molcata.2014.04.026 | - |
dc.relation.ispartof | Journal of Molecular Catalysis A-Chemical, 2014, vol. 391, p. 183-190 | - |
dc.relation.uri | https://doi.org/10.1016/j.molcata.2014.04.026 | - |
dc.rights | (c) Elsevier B.V., 2014 | - |
dc.source | Articles publicats en revistes (Mineralogia, Petrologia i Geologia Aplicada) | - |
dc.subject.classification | Catàlisi asimètrica | - |
dc.subject.classification | Lligands | - |
dc.subject.classification | Pal·ladi (Element químic) | - |
dc.subject.classification | Ruteni | - |
dc.subject.other | Enantioselective catalysis | - |
dc.subject.other | Ligands | - |
dc.subject.other | Palladium | - |
dc.subject.other | Ruthenium | - |
dc.title | P-Stereogenic monophosphines with the 2-p-terphenylyl and 1-pyrenyl substituents. Application to Pd and Ru asymmetric catalysis | - |
dc.type | info:eu-repo/semantics/article | - |
dc.type | info:eu-repo/semantics/acceptedVersion | - |
dc.identifier.idgrec | 641221 | - |
dc.date.updated | 2020-06-13T10:13:11Z | - |
dc.rights.accessRights | info:eu-repo/semantics/openAccess | - |
Appears in Collections: | Articles publicats en revistes (Mineralogia, Petrologia i Geologia Aplicada) |
Files in This Item:
File | Description | Size | Format | |
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641221.pdf | 1.55 MB | Adobe PDF | View/Open |
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