Source:http://linkedlifedata.com/resource/pubmed/id/21343886
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Predicate | Object |
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rdf:type | |
lifeskim:mentions | |
pubmed:issue |
2
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pubmed:dateCreated |
2011-2-23
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pubmed:abstractText |
Two new chiral, enantiomerically pure, hybrid P-N ligands, namely (2R,5S)-2-phenyl-3-(2-pyridyl)-1,3-diaza-2-phosphanicyclo[3,3,0]octan-4-one (1) and (2R,5S)-2-phenyl-3-(2-pyridyl)-1,3-diaza-2-phosphanicyclo[3,3,0]octane (2), have been synthesized starting from L-proline. The two ligands differ in the presence or not of a carbonyl group in the diazaphosphane ring. Their coordination chemistry towards Pd(II) was studied by reacting them with [Pd(CH?)Cl(cod)]. A different behaviour was observed: ligand 2 shows the expected bidentate chelating behaviour leading to the mononuclear Pd-complex, while ligand 1 acts as a terdentate ligand giving a dinuclear species. The corresponding cationic derivatives were obtained from the palladium neutral complexes, both as mono- and dinuclear derivatives, and tested as precatalysts for styrene dimerization, yielding E-1,3-diphenyl-1-butene regio- and stereoselectively as the sole product. A detailed analysis of the catalytic behaviour is reported.
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pubmed:language |
eng
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pubmed:journal | |
pubmed:citationSubset |
IM
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pubmed:chemical | |
pubmed:status |
MEDLINE
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pubmed:issn |
1420-3049
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pubmed:author | |
pubmed:issnType |
Electronic
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pubmed:volume |
16
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pubmed:owner |
NLM
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pubmed:authorsComplete |
Y
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pubmed:pagination |
1804-24
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pubmed:meshHeading |
pubmed-meshheading:21343886-Catalysis,
pubmed-meshheading:21343886-Cations,
pubmed-meshheading:21343886-Dimerization,
pubmed-meshheading:21343886-Ligands,
pubmed-meshheading:21343886-Magnetic Resonance Spectroscopy,
pubmed-meshheading:21343886-Molecular Structure,
pubmed-meshheading:21343886-Palladium,
pubmed-meshheading:21343886-Stereoisomerism,
pubmed-meshheading:21343886-Styrene,
pubmed-meshheading:21343886-Temperature
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pubmed:year |
2011
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pubmed:articleTitle |
New chiral P-N ligands for the regio- and stereoselective Pd-catalyzed dimerization of styrene.
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pubmed:affiliation |
Dipartimento di Scienze Chimiche e Farmaceutiche, Università di Trieste, Via Licio Giorgieri 1, 34127 Trieste, Italy.
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pubmed:publicationType |
Journal Article,
Research Support, Non-U.S. Gov't
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