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Volumn 118, Issue 26, 1996, Pages 6225-6234

Mechanistic studies of catalytic olefin dimerization reactions using electrophilic η3-allyl-palladium(II) complexes

Author keywords

[No Author keywords available]

Indexed keywords

ALKENE DERIVATIVE;

EID: 0030018694     PISSN: 00027863     EISSN: None     Source Type: Journal    
DOI: 10.1021/ja9602354     Document Type: Article
Times cited : (117)

References (58)
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    • U. S. Patent 4 638 084, 1987
    • Singleton, D. M. U. S. Patent 4 638 084, 1987.
    • Singleton, D.M.1
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    • U. S. Patent 4 485 256, 1986
    • McKinney, R. J. U. S. Patent 4 485 256, 1986.
    • McKinney, R.J.1
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    • 8944259809 scopus 로고    scopus 로고
    • U. S. Patent 4 451 665, 1984
    • Nugent, W. A. U. S. Patent 4 451 665, 1984.
    • Nugent, W.A.1
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    • 8944231058 scopus 로고    scopus 로고
    • European Patent 305 302, 1989
    • Perron, R.; Mutez, S. European Patent 305 302, 1989.
    • Perron, R.1    Mutez, S.2
  • 32
    • 0000284010 scopus 로고
    • Shriver, D. F., Ed.; John Wiley & Sons: New York
    • Tatsuno, Y.; Yoshida, T. In Inorganic Synthesis; Shriver, D. F., Ed.; John Wiley & Sons: New York, 1979; p 220.
    • (1979) Inorganic Synthesis , pp. 220
    • Tatsuno, Y.1    Yoshida, T.2
  • 43
    • 8944257276 scopus 로고    scopus 로고
    • note
    • 31P sites. This is consistent with the allyl rocking proposal (9 ⇀ 9′). If two conformations of the tricyclohexylphosphine ligand were possible, then three isomers would be expected for 9. Only one isomer of the three would exhibit inequivalent phosphorus nuclei. It seems unlikely that this would be the sole isomer detectable. Thus we favor allyl rocking to account for the dynamics of 9 and, by analogy, for the dynamics of the other allyl complexes.
  • 48
    • 41749109209 scopus 로고    scopus 로고
    • In press
    • Very recently, the reaction of similar allyl-palladium complexes with ethylene was directly observed: Mecking, S.; Keim, W. Organometallics In press.
    • Organometallics
    • Mecking, S.1    Keim, W.2
  • 50
    • 8944234751 scopus 로고    scopus 로고
    • note
    • There is no evidence that this species is a bis-ethy!ene complex. However, since ethylene readily displaces diethyl ether in these cationic species, we believe a bis-ethylene complex is more likely than a solvated mono-ethylene complex.
  • 53
    • 8944254600 scopus 로고    scopus 로고
    • note
    • We cannot rule out the presence of both 16 and 16′ in rapid equilibrium at 25 °C. Associative exchange of bound and free acrylate is rapid on the NMR time scale at 25 °C (see above); the five coordinate intermediate responsible for associative exchange thus could provide a mechanism for very rapid interconversion of 16 and 16′.
  • 54
    • 8944225402 scopus 로고    scopus 로고
    • note
    • The NMR analysis of the sequence 19 → 20 → 21 is more complicated than the analogous transformations for the tricyclohexyl phosphine complexes 13 → 14 → 16. The rate of 19 → 20 is only slightly faster than the 20 → 21 conversion and thus 20 never appears without substantial amounts of either 19 and/or 21 present.
  • 57
    • 8944259808 scopus 로고    scopus 로고
    • Grant, B.; Brookhart, M. Unpublished results
    • Grant, B.; Brookhart, M. Unpublished results.


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.