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Volumn 25, Issue 26, 2006, Pages 6074-6086

Understanding structural isomerization during ruthenium-catalyzed olefin metathesis: A deuterium labeling study

Author keywords

[No Author keywords available]

Indexed keywords

AROMATIC RINGS; BENZYLIDENES; METATHESIS; RUTHENIUM DIHYDRIDES;

EID: 33846384067     PISSN: 02767333     EISSN: None     Source Type: Journal    
DOI: 10.1021/om0509894     Document Type: Article
Times cited : (121)

References (103)
  • 5
    • 1442360753 scopus 로고    scopus 로고
    • For relevant reviews, see: a, Grubbs, R. H, Ed, Wiley-VCH: Weinheim, Germany
    • For relevant reviews, see: (a) Handbook of Metathesis; Grubbs, R. H., Ed.; Wiley-VCH: Weinheim, Germany, 2003.
    • (2003) Handbook of Metathesis
  • 21
    • 1642462100 scopus 로고    scopus 로고
    • For a review on Ru-bearing bidentate carbenes: Hoveyda, A. H.; Gillingham, D. G.; Van Veldhuizen, J. J.; Kataoka, O.; Garber, S. B.; Kingsbury, J. S.; Harrity, J. P. A. Org. Biomol. Chem. 2004,2, 8-23.
    • (c) For a review on Ru-bearing bidentate carbenes: Hoveyda, A. H.; Gillingham, D. G.; Van Veldhuizen, J. J.; Kataoka, O.; Garber, S. B.; Kingsbury, J. S.; Harrity, J. P. A. Org. Biomol. Chem. 2004,2, 8-23.
  • 24
    • 0037451439 scopus 로고    scopus 로고
    • For a review on non-metathetic behavior of Ru carbenes, see
    • (a) For a review on non-metathetic behavior of Ru carbenes, see: Alcaide, B.; Almendros, P. Chem. Eur. J. 2003,9, 1258-1262.
    • (2003) Chem. Eur. J , vol.9 , pp. 1258-1262
    • Alcaide, B.1    Almendros, P.2
  • 30
    • 3943048796 scopus 로고    scopus 로고
    • For a short review on the isomerization behavior of ruthenium carbenes, see
    • For a short review on the isomerization behavior of ruthenium carbenes, see: Schmidt, B. Eur. J. Org. Chem. 2004,9, 1865-1880.
    • (2004) Eur. J. Org. Chem , vol.9 , pp. 1865-1880
    • Schmidt, B.1
  • 34
    • 0034681491 scopus 로고    scopus 로고
    • Angew. Chem., Int. Ed. 2000, 39, 725-728.
    • (2000) Chem., Int. Ed , vol.39 , pp. 725-728
    • Angew1
  • 51
    • 4244076867 scopus 로고    scopus 로고
    • For relevant reviews on the reactivity of ruthenium hydride complexes, see: a
    • For relevant reviews on the reactivity of ruthenium hydride complexes, see: (a) Naota, T.; Takaya, H.; Murahashi, S. Chem. Rev. 1998,98, 2599-2660.
    • (1998) Chem. Rev , vol.98 , pp. 2599-2660
    • Naota, T.1    Takaya, H.2    Murahashi, S.3
  • 54
    • 33846346800 scopus 로고    scopus 로고
    • U.S. Pat. Appl. 60/ 192394, priority date March 26, 2000
    • (b) Fogg, D. E.; Drouin, S. D.; Zamanian, F. U.S. Pat. Appl. 60/ 192394, priority date March 26, 2000.
    • Fogg, D.E.1    Drouin, S.D.2    Zamanian, F.3
  • 55
  • 72
    • 33846347823 scopus 로고    scopus 로고
    • Ph.D. Dissertation, University of Florida
    • Courchay, F. C. Ph.D. Dissertation, University of Florida, 2005.
    • (2005)
    • Courchay, F.C.1
  • 74
    • 33846393762 scopus 로고    scopus 로고
    • The details of NMR and NOE experiments are available in the Supporting Information
    • The details of NMR and NOE experiments are available in the Supporting Information.
  • 75
    • 33846373214 scopus 로고    scopus 로고
    • The sum of deuterium for each molecule of product 9 and 10 does not equal 2.00 (number of deuteriums present in one molecule of allyl-1,1-d2 methyl ether) because some deuterium atoms were incorporated in the ethylene released during the metathesis of allyl-1,1,3-d3 methyl ether
    • 3 methyl ether.
  • 78
    • 33846388745 scopus 로고    scopus 로고
    • Traces of deuterium incorporation at the olefinic bond of the starting material were also observed, suggesting the presence of a metal hydride at this early stage of the reaction
    • Traces of deuterium incorporation at the olefinic bond of the starting material were also observed, suggesting the presence of a metal hydride at this early stage of the reaction.
  • 79
    • 33846374606 scopus 로고    scopus 로고
    • 2 methyl ether.
    • 2 methyl ether.
  • 80
    • 33846393411 scopus 로고    scopus 로고
    • Crystals suitable for X-ray structure determination were obtained from slow diffusion of pentane into a saturated solution of 8 in benzene at room temperature
    • Crystals suitable for X-ray structure determination were obtained from slow diffusion of pentane into a saturated solution of 8 in benzene at room temperature.
  • 81
    • 33846361594 scopus 로고    scopus 로고
    • Crystal data for compound 8 are available as Supporting Information.
    • Crystal data for compound 8 are available as Supporting Information.
  • 82
    • 33846389084 scopus 로고    scopus 로고
    • The decomposition is indicated by the steady disappearance of the carbene signal at δ 19.63 ppm
    • The decomposition is indicated by the steady disappearance of the carbene signal at δ 19.63 ppm.
  • 83
    • 33846400287 scopus 로고    scopus 로고
    • In a previous report,11a we observed that, after 24 h at 55°C, a 2.3 M solution of catalyst 2 in neat 1-octene afforded 76% isomers. In the present case, the catalytic mixture was dried under vacuum once fully decomposed no more carbene signal on the 1H NMR, and 0.5 g of 1-octene was added. The reaction mixture was allowed to stand at 55°C for 24 h, and the isomer content was determined by 1H NMR by integration of the internal olefin peak at δ 5.40 ppm
    • 1H NMR by integration of the internal olefin peak at δ 5.40 ppm.
  • 84
    • 33846340978 scopus 로고    scopus 로고
    • 1H NMR, these conditions led to the complete transformation of benzylidene 8 into the methylidene, which decomposed rapidly, as indicated by the disappearance of the methylidene signal at 18.40 ppm.
    • 1H NMR, these conditions led to the complete transformation of benzylidene 8 into the methylidene, which decomposed rapidly, as indicated by the disappearance of the methylidene signal at 18.40 ppm.
  • 85
    • 33846379049 scopus 로고    scopus 로고
    • The deuterium content observed here is much superior to the levels naturally found in benzene
    • The deuterium content observed here is much superior to the levels naturally found in benzene.
  • 90
    • 33846364484 scopus 로고    scopus 로고
    • Due to the large excess of allyl methyl ether, we suppose that at early reaction times the molecules are only monodeuterated, since they are not likely to react again with another ruthenium deuteride
    • Due to the large excess of allyl methyl ether, we suppose that at early reaction times the molecules are only monodeuterated, since they are not likely to react again with another ruthenium deuteride.
  • 96
    • 29044439970 scopus 로고    scopus 로고
    • A recent paper shows the use of benzoquinone to prevent olefin isomerization during metathesis reactions: Hong, S. H, Sanders, D. P, Lee, C. W, Grubbs, R. H. J. Am. Chem. Soc. 2005,127, 17160-17161
    • A recent paper shows the use of benzoquinone to prevent olefin isomerization during metathesis reactions: Hong, S. H.; Sanders, D. P.; Lee, C. W.; Grubbs, R. H. J. Am. Chem. Soc. 2005,127, 17160-17161.
  • 100
    • 33846394265 scopus 로고    scopus 로고
    • SHELXTL6: Bruker-AXS, Madison, WI, 2000.
    • SHELXTL6: Bruker-AXS, Madison, WI, 2000.


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.