How Important Is the Release-Return Mechanism in Olefin Metathesis?

From whose bourns no traveller returns, puzzles the will: UV/Vis, 19F NMR, and fluorescence spectroscopic studies (see graphic) provide no evidence supporting the boomerang mechanism in Grubbs–Hoveyda complexes, which is the return of the isopropoxy styrene as a benzylidene ether ligand following it...

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Bibliographic Details
Published in:Chemistry : a European journal 2010-11, Vol.16 (41), p.12312-12315
Main Authors: Vorfalt, Tim, Wannowius, Klaus J., Thiel, Vasco, Plenio, Herbert
Format: Article
Language:English
Subjects:
Chemistry
fluorescence
olefin metathesis
release-return mechanism
ruthenium
UV/Vis spectroscopy
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Summary:From whose bourns no traveller returns, puzzles the will: UV/Vis, 19F NMR, and fluorescence spectroscopic studies (see graphic) provide no evidence supporting the boomerang mechanism in Grubbs–Hoveyda complexes, which is the return of the isopropoxy styrene as a benzylidene ether ligand following its release during catalyst initiation.
ISSN:0947-6539
1521-3765
DOI:10.1002/chem.201001832