Synergic Effects Between N-Heterocyclic Carbene and Chelating Benzylidene-Ether Ligands Toward the Initiation Step of Hoveyda-Grubbs Type Ru Complexes. - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue ACS Catalysis Année : 2013

Synergic Effects Between N-Heterocyclic Carbene and Chelating Benzylidene-Ether Ligands Toward the Initiation Step of Hoveyda-Grubbs Type Ru Complexes.

Résumé

Synergic effects between ancillary N-heterocyclic carbenes [(1,3-bis(2,4,6-trimethylphenyl)-1,3-imidazoline-2-ylidene or 1,3-bis(2,6-diisopropylphenyl)-1,3-imidazoline-2-ylidene] and chelating benzylidene ether ligands were investigated by studying initiation rates and kinetic profiles of Hoveyda-Grubbs (HG) type Ru complexes. A newly designed Ru-benzylidene-oxazinone precatalyst 4 was compared with Grela and Blechert complexes bearing modified isopropyloxy chelating leaving groups and with the standard HG complex to understand how the ancillary and the leaving ligands interact and influence the catalytic activity.

Dates et versions

hal-00815849 , version 1 (19-04-2013)

Identifiants

Citer

David J. Nelson, Pierre Queval, Mathieu Rouen, Loïc Toupet, Frédéric Caijo, et al.. Synergic Effects Between N-Heterocyclic Carbene and Chelating Benzylidene-Ether Ligands Toward the Initiation Step of Hoveyda-Grubbs Type Ru Complexes.. ACS Catalysis, 2013, 3 (2), pp.259-264. ⟨10.1021/cs400013z⟩. ⟨hal-00815849⟩
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