메뉴 건너뛰기




Volumn 119, Issue 17, 1997, Pages 3887-3897

Well-defined ruthenium olefin metathesis catalysts: Mechanism and activity

Author keywords

[No Author keywords available]

Indexed keywords

ALKADIENE; ALKENE DERIVATIVE; COPPER CHLORIDE; HALOGEN; LIGAND; MALONIC ACID DERIVATIVE; PHOSPHINE DERIVATIVE; RUTHENIUM;

EID: 0030994105     PISSN: 00027863     EISSN: None     Source Type: Journal    
DOI: 10.1021/ja963136z     Document Type: Article
Times cited : (699)

References (38)
  • 15
    • 1542763298 scopus 로고
    • For a recent review of olefin metathesis catalysts in organic synthesis, see Grubbs, R. H.; Miller, S. J.; Fu, G. C. Acc. Chem. Res. 1995, 28, 446-452.
    • (1995) Acc. Chem. Res. , vol.28 , pp. 446-452
    • Grubbs, R.H.1    Miller, S.J.2    Fu, G.C.3
  • 17
    • 1842342520 scopus 로고    scopus 로고
    • note
    • 2 in this ring-closing metathesis reaction.
  • 18
    • 0002557726 scopus 로고
    • For background reading on the steric and electronic properties of phosphines, see: (a) Brown, T. L.; Lee, K. J. Coord. Chem. Rev. 1993, 128, 89-116. (b) Wilson, M. R.; Woska, D. C.; Prock, A.; Giering, W. P. Organometallics 1993, 12, 1742-1752. (c) Tolman, C. A. Chem. Rev. 1977, 77, 313-348.
    • (1993) Coord. Chem. Rev. , vol.128 , pp. 89-116
    • Brown, T.L.1    Lee, K.J.2
  • 19
    • 0001668299 scopus 로고
    • For background reading on the steric and electronic properties of phosphines, see: (a) Brown, T. L.; Lee, K. J. Coord. Chem. Rev. 1993, 128, 89-116. (b) Wilson, M. R.; Woska, D. C.; Prock, A.; Giering, W. P. Organometallics 1993, 12, 1742-1752. (c) Tolman, C. A. Chem. Rev. 1977, 77, 313-348.
    • (1993) Organometallics , vol.12 , pp. 1742-1752
    • Wilson, M.R.1    Woska, D.C.2    Prock, A.3    Giering, W.P.4
  • 20
    • 11644311048 scopus 로고
    • For background reading on the steric and electronic properties of phosphines, see: (a) Brown, T. L.; Lee, K. J. Coord. Chem. Rev. 1993, 128, 89-116. (b) Wilson, M. R.; Woska, D. C.; Prock, A.; Giering, W. P. Organometallics 1993, 12, 1742-1752. (c) Tolman, C. A. Chem. Rev. 1977, 77, 313-348.
    • (1977) Chem. Rev. , vol.77 , pp. 313-348
    • Tolman, C.A.1
  • 21
    • 1842396808 scopus 로고    scopus 로고
    • note
    • 2). We found that the trifluoroacetate-containing catalyst polymerized norbornene at least ten times faster than the acetate-containing catalyst, and therefore we conclude that more electron withdrawing X groups produce more active catalysts.
  • 23
    • 1842311903 scopus 로고    scopus 로고
    • note
    • It may be argued that breakdown of the metallacycle is the rate determining step, in which case our differential equations are only slightly altered, and still in agreement with our empirically derived rate expression. However, we believe that metallacycle formation is rate determining, as it corresponds to a formal two electron oxidation of the ruthenium center.
  • 24
    • 1842310899 scopus 로고    scopus 로고
    • note
    • 1H NMR in the presence of excess phosphine.
  • 25
    • 1842281226 scopus 로고    scopus 로고
    • note
    • The possiblity that the diene chelates the metal center to form a 16-electron complex cannot be ruled out, although entropically this seems unlikely without any predisposition of the diene toward chelation as in the case of butadiene, norbornadiene, or 1,5-cyclooctadiene.
  • 26
    • 1842380253 scopus 로고    scopus 로고
    • note
    • 3, indicating relatively high barriers to both phosphine exchange and carbene rotation.
  • 29
    • 0004165224 scopus 로고
    • McGraw-Hill: New York
    • For a brief discussion of the principle of microscopic reversibility, see for example: Laidler, K. J. Chemical Kinetics, 2nd ed.; McGraw-Hill: New York, 1965; pp 110-112.
    • (1965) Chemical Kinetics, 2nd Ed. , pp. 110-112
    • Laidler, K.J.1
  • 36
    • 85050321456 scopus 로고
    • Wiley: New York, and references therein
    • For a discussion of molybdenum and tungsten catalyst activities, see: Progress in Inorganic Chemistry; Lippard, S. J., Ed.; Wiley: New York, 1991; Vol. 39, and references therein.
    • (1991) Progress in Inorganic Chemistry , vol.39
    • Lippard, S.J.1
  • 38
    • 1842279262 scopus 로고    scopus 로고
    • note
    • It is likely that there is some degree of halogen exchange when catalysts containing Br or I are used. However, complexation of free phosphine is undoubtedly the predominant effect, since Cl-containing compounds such as 2c are activated by addition of CuCl to the extent that the ring-closing reaction is too fast to study under the standard reaction conditions.


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.