N-Heterocyclic Carbenes as Activating Ligands for Hydrogenation and Isomerization of Unactivated Olefins

The new hydridoruthenium complexes RuHCl(CO)(NHC)(PPh3) (NHC = IMes (4a), H2IMes (4b)), conveniently accessible from RuHCl(CO)(PPh3)3, exhibit high activity for hydrogenation of unactivated internal olefins and isomerization of terminal olefins. The lability of the PPh3 ligand is fundamental to the...

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Bibliographic Details
Published in:Organometallics 2005-03, Vol.24 (6), p.1056-1058
Main Authors: Dharmasena, Ureshini L, Foucault, Heather M, dos Santos, Eduardo N, Fogg, Deryn E, Nolan, Steven P
Format: Article
Language:English
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Summary:The new hydridoruthenium complexes RuHCl(CO)(NHC)(PPh3) (NHC = IMes (4a), H2IMes (4b)), conveniently accessible from RuHCl(CO)(PPh3)3, exhibit high activity for hydrogenation of unactivated internal olefins and isomerization of terminal olefins. The lability of the PPh3 ligand is fundamental to the utility of 4:  where this group is replaced by the relatively nonlabile PCy3 ligand, the activating effect of the N-heterocyclic carbene is suppressed.
ISSN:0276-7333
1520-6041
DOI:10.1021/om049041k