DC Field | Value | Language |
---|---|---|
dc.contributor.author | Cho, CW | - |
dc.contributor.author | Son, JH | - |
dc.contributor.author | Ahn, KH | - |
dc.date.accessioned | 2016-04-01T01:49:06Z | - |
dc.date.available | 2016-04-01T01:49:06Z | - |
dc.date.created | 2009-08-13 | - |
dc.date.issued | 2006-09-11 | - |
dc.identifier.issn | 0957-4166 | - |
dc.identifier.other | 2006-OAK-0000006305 | - |
dc.identifier.uri | https://oasis.postech.ac.kr/handle/2014.oak/23770 | - |
dc.description.abstract | The equilibration and catalytic efficiency of (pi-allyl)Pd complexes of N,P-chelates (L), [Pd(L)( eta(3)-PhCHCHCHPh)]X, depending on their counteranions X have been studied by NMR spectroscopy and X-ray crystallography [L: 1-[4(S)-tert-butyl-2-oxazolin-2-yl]2(S-p)-(diphenylphosphino)ferrocene 1; 1-[4(S)-tert-butyl-2-oxazolin-2-yl]-2(R-p)-(diphenylphosphino)ferrocene 2. X: Cl- and PF6-]. Among the possible isomeric (pi-allyl)Pd complexes, only endo-syn-syn 1n and 2n and exo-syn-syn isomers 1x and 2x were observed and the endo-isomer was found to be the major one in both cases. The endo/exo ratio determined in CDCl3 at room temperature was dependent both on the counterions and more so on the N,P-chelates (Cl-: 1n/1x = 9.8/1; 2n/2x = 5.3/1 vs PF6-: 1n/1x = 8.7/1; 2n/2x = 4.6/1). The counteranions significantly affected the rate as well as the enantioselectivity in the palladium catalyzed allylic substitution reaction. In the case of Cl- counterion, the catalytic reaction proceeded much faster and also provided a higher enantio selectivity compared to the case of the PF6- counterion. We have also evaluated the relative thermodynamic stability of the palladium complexes depending on ligands 1 and 2 by an equilibration study and by X-ray crystal structure analysis for the corresponding (n-allyl)palladium complexes. The higher reactivity of the less stable palladium complex of 1 over the more stable palladium complex of 2 is explained by a steric strain-reactivity argument. (c) 2006 Elsevier Ltd. All rights reserved. | - |
dc.description.statementofresponsibility | X | - |
dc.language | English | - |
dc.publisher | PERGAMON-ELSEVIER SCIENCE LTD | - |
dc.relation.isPartOf | TETRAHEDRON-ASYMMETRY | - |
dc.subject | CATALYZED ALLYLIC ALKYLATION | - |
dc.subject | PI-ALLYLPALLADIUM COMPLEXES | - |
dc.subject | PLANAR CHIRALITY | - |
dc.subject | DIPHENYLPHOSPHINO(OXAZOLINYL)FERROCENE LIGANDS | - |
dc.subject | NUCLEOPHILIC-ADDITION | - |
dc.subject | ASYMMETRIC INDUCTION | - |
dc.subject | PALLADIUM COMPLEXES | - |
dc.subject | SUBSTITUTION | - |
dc.subject | ENANTIOSELECTIVITY | - |
dc.subject | MECHANISM | - |
dc.title | Studies on the structure and equilibration of (pi-allyl)palladium complexes of phosphino(oxazolinyl)ferrocene ligands | - |
dc.type | Article | - |
dc.contributor.college | 분자소재융합계의 전자-광 거동연구센터 | - |
dc.identifier.doi | 10.1016/j.tetasy.2006.08.002 | - |
dc.author.google | Cho, CW | - |
dc.author.google | Son, JH | - |
dc.author.google | Ahn, KH | - |
dc.relation.volume | 17 | - |
dc.relation.issue | 15 | - |
dc.relation.startpage | 2240 | - |
dc.relation.lastpage | 2246 | - |
dc.contributor.id | 10087916 | - |
dc.relation.journal | TETRAHEDRON-ASYMMETRY | - |
dc.relation.index | SCI급, SCOPUS 등재논문 | - |
dc.relation.sci | SCI | - |
dc.collections.name | Journal Papers | - |
dc.type.rims | ART | - |
dc.identifier.bibliographicCitation | TETRAHEDRON-ASYMMETRY, v.17, no.15, pp.2240 - 2246 | - |
dc.identifier.wosid | 000241317400011 | - |
dc.date.tcdate | 2019-01-01 | - |
dc.citation.endPage | 2246 | - |
dc.citation.number | 15 | - |
dc.citation.startPage | 2240 | - |
dc.citation.title | TETRAHEDRON-ASYMMETRY | - |
dc.citation.volume | 17 | - |
dc.contributor.affiliatedAuthor | Ahn, KH | - |
dc.identifier.scopusid | 2-s2.0-33748713616 | - |
dc.description.journalClass | 1 | - |
dc.description.journalClass | 1 | - |
dc.description.wostc | 11 | - |
dc.type.docType | Article | - |
dc.subject.keywordPlus | CATALYZED ALLYLIC ALKYLATION | - |
dc.subject.keywordPlus | PI-ALLYLPALLADIUM COMPLEXES | - |
dc.subject.keywordPlus | PLANAR CHIRALITY | - |
dc.subject.keywordPlus | DIPHENYLPHOSPHINO(OXAZOLINYL)FERROCENE LIGANDS | - |
dc.subject.keywordPlus | NUCLEOPHILIC-ADDITION | - |
dc.subject.keywordPlus | ASYMMETRIC INDUCTION | - |
dc.subject.keywordPlus | PALLADIUM COMPLEXES | - |
dc.subject.keywordPlus | SUBSTITUTION | - |
dc.subject.keywordPlus | ENANTIOSELECTIVITY | - |
dc.subject.keywordPlus | MECHANISM | - |
dc.relation.journalWebOfScienceCategory | Chemistry, Inorganic & Nuclear | - |
dc.relation.journalWebOfScienceCategory | Chemistry, Organic | - |
dc.relation.journalWebOfScienceCategory | Chemistry, Physical | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.relation.journalResearchArea | Chemistry | - |
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