Effect of Ligand Bulk in Ruthenium-Catalyzed Olefin Metathesis: IPr vs IPr

Effect of Ligand Bulk in Ruthenium-Catalyzed Olefin Metathesis: IPr vs IPr

Novel ruthenium catalysts, [RuCl2(IPr*)­(PPh3)­(3-phenylindenylidene)] (1) and [RuCl2(IPr*)­(Py)­(3-phenylindenylidene)] (2), bearing the very bulky ligand IPr* are reported. The complexes were tested in ring closing and cross-metathesis, and their activities were compared to that displayed by [RuCl...

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Veröffentlicht in:Organometallics 2012-09, Vol.31 (18), p.6514-6517
Hauptverfasser: Manzini, Simone, Urbina Blanco, César A, Slawin, Alexandra M. Z, Nolan, Steven P
Format: Artikel
Sprache:eng
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Zusammenfassung:Novel ruthenium catalysts, [RuCl2(IPr*)­(PPh3)­(3-phenylindenylidene)] (1) and [RuCl2(IPr*)­(Py)­(3-phenylindenylidene)] (2), bearing the very bulky ligand IPr* are reported. The complexes were tested in ring closing and cross-metathesis, and their activities were compared to that displayed by [RuCl2(IPr)­(PPh3)­(3-phenylindenylidene)] (3) and the new [RuCl2(IPr)­(Py)­(3-phenylindenylidene)] (4), in order to assess how the steric hindrance of the N-heterocyclic carbene influences the catalytic activity of the resulting ruthenium complexes.
ISSN:0276-7333
1520-6041
DOI:10.1021/om300719t