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Volumn 27, Issue 11, 2008, Pages 2643-2653

On the mechanistic behavior of highly efficient palladium-tetraphosphine catalytic systems for cross-coupling reactions: First spectroscopic and electrochemical studies of oxidative addition on Pd(0)/multidentate ferrocenylpolyphosphine complexes

Author keywords

[No Author keywords available]

Indexed keywords

ADDITION REACTIONS; PALLADIUM;

EID: 45449084660     PISSN: 02767333     EISSN: None     Source Type: Journal    
DOI: 10.1021/om701279x     Document Type: Article
Times cited : (30)

References (78)
  • 1
    • 33846688751 scopus 로고    scopus 로고
    • For reviews on palladium-based cross-coupling reactions see: a
    • For reviews on palladium-based cross-coupling reactions see: (a) Doucet, H.; Hierso, J.-C. Angew. Chem., Int. Ed. 2007, 46, 834-871.
    • (2007) Angew. Chem., Int. Ed , vol.46 , pp. 834-871
    • Doucet, H.1    Hierso, J.-C.2
  • 34
    • 45449117471 scopus 로고    scopus 로고
    • NMR spectra (and g-NMR simulation for lb) and X-ray data are available as Supporting Information.
    • NMR spectra (and g-NMR simulation for lb) and X-ray data are available as Supporting Information.
  • 43
    • 4243664295 scopus 로고    scopus 로고
    • 2) group is 0.19; see: Hansch, C.; Leo, A.; Taft, R. W. Chem. Rev. 1991, 91, 165-195.
    • 2) group is 0.19; see: Hansch, C.; Leo, A.; Taft, R. W. Chem. Rev. 1991, 91, 165-195.
  • 44
    • 45449098684 scopus 로고    scopus 로고
    • Voltammetric investigation of the electrolyzed solution shows that peak O is observed in the first anodic scan Figure 4, line b, Noticeably, the backward cathodic scan makes reduction peak R happen: the electrolysis product can be converted back to la by oxidation
    • Voltammetric investigation of the electrolyzed solution shows that peak O is observed in the first anodic scan (Figure 4, line b). Noticeably, the backward cathodic scan makes reduction peak R happen: the electrolysis product can be converted back to la by oxidation.
  • 47
    • 45449085650 scopus 로고    scopus 로고
    • 3 similarly displays in the cathodic scan a two-electron chemically irreversible reduction around-1 V vs SCE, which is coupled upon scan inversion to an oxidation O more positive than R by nearly 1 V.
    • 3 similarly displays in the cathodic scan a two-electron chemically irreversible reduction around-1 V vs SCE, which is coupled upon scan inversion to an oxidation O more positive than R by nearly 1 V.
  • 48
    • 45449085227 scopus 로고    scopus 로고
    • This case is much more probable because of the simplicity of the voltammograms and NMR spectra obtained
    • This case is much more probable because of the simplicity of the voltammograms and NMR spectra obtained.
  • 49
    • 45449085850 scopus 로고    scopus 로고
    • This intermolecular phosphorus bonding process toward palladium may possibly concern more than two ligand molecules to yield oligomers. In addition, it is worth noting that the coordination sphere of palladium for A and B might be completed wim a halide ion to form anionic Pd0 species; see ref 4a. However, the values of phosphorus chemical shift are not really in favor of this hypothesis compared to data reported by Jutand and Amatore and also to the other NMR chemical shifts obtained in the presence of excess halides
    • 0 species; see ref 4a. However, the values of phosphorus chemical shift are not really in favor of this hypothesis compared to data reported by Jutand and Amatore and also to the other NMR chemical shifts obtained in the presence of excess halides.
  • 56
    • 33746866282 scopus 로고    scopus 로고
    • and references therein
    • (f) Ariafard, A.; Lin, Z. Organometallics 2006, 25, 4030-4033, and references therein.
    • (2006) Organometallics , vol.25 , pp. 4030-4033
    • Ariafard, A.1    Lin, Z.2
  • 70
    • 45449083630 scopus 로고    scopus 로고
    • norm,O = 50%.
    • norm,O = 50%.
  • 74
    • 45449107780 scopus 로고    scopus 로고
    • Indeed, for diphosphines of moderate basicity the reaction has been established to proceed via insertion of the bis-ligated Pd0(L-L, L-L, diphosphine) into the Carom-X bond; see ref 27
    • arom-X bond; see ref 27.
  • 75
    • 45449114779 scopus 로고    scopus 로고
    • The exchange energy barrier from A′ to A″ is expected to be rather low
    • The exchange energy barrier from A′ to A″ is expected to be rather low.
  • 77
    • 45449119477 scopus 로고    scopus 로고
    • Gordon, A. J.; Ford, R. A. The Chemist's Companion, a Handbook of Practical Data, Techniques and References; Wiley: New York, 1972; p 436.
    • (b) Gordon, A. J.; Ford, R. A. The Chemist's Companion, a Handbook of Practical Data, Techniques and References; Wiley: New York, 1972; p 436.


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.