Ruthenium metallacycles derived from 14-electron complexes. New insights into olefin metathesis intermediates

Journal of the American Chemical Society

Volumn 128, Issue 50, 2006, Pages 16048-16049

  Wenzel, Anna G ^a,b   Grubbs, Robert H ^a  

^a California Institute of Technology   (United States)

^b SCRIPPS COLLEGE   (United States)

Author keywords

[No Author keywords available]

Indexed keywords

ALKENE; RUTHENIUM DERIVATIVE;

ARTICLE; CATALYST; COMPLEX FORMATION; REACTION ANALYSIS; STEREOCHEMISTRY;

ALKENES; ELECTRONS; MOLECULAR STRUCTURE; RUTHENIUM;

EID: 33845563841     PISSN: 00027863     EISSN: None     Source Type: Journal    
DOI: 10.1021/ja0666598     Document Type: Article

References (19)

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11. We have subsequently confirmed the presence of 4 under these conditions via mass spectrometry. Refer to the Supporting Information.
12. Refer to the Supporting Information.
13. Mashima, K.; Kaidzu, M.; Nakayama, Y.; Nakamura, A. Organometallics 1997, 16, 1345-1348.
14. Howard, T. R.; Lee, J. B.; Grubbs, R. H. J. Am. Chem. Soc. 1980, 102, 6878-6880.
15. Relative to anthracene as an internal standard.
16. Neuhaus, D.; Williamson, M. P. The Nuclear Overhauser Effect in Structural and Conformational Analysis, 2nd ed.: Wiley-VCH: New York, 2000; Chapter 8.
17. B↔B′ rate constant includes the rates of metallacycle cycloreversion, olefin rotation, and metallacycle formation to interconvert positions 1 and 2 in Scheme 5.
18. Examples of additional olefins that we have thus far investigated: 1,1-difluoroethylene, vinyl fluoride, ethyl vinyl ether, neohexene, acenaphthylene, 2-butyne, and methyl acrylate.
19. Propene was added in excess (35 equiv) to both minimize the conversion of 3b into a bis-ruthenium μ-Cl decomposition product and prevent the reaction mixture from freezing.