TY - JOUR
T1 - Olefin Metathesis Featuring Ruthenium Indenylidene Complexes with a Sterically Demanding NHC Ligand
AU - Urbina-Blanco, Cesar A.
AU - Leitgeb, Anita
AU - Slugovc, Christian
AU - Bantreil, Xavier
AU - Clavier, Herve
AU - Slawin, Alexandra M. Z.
AU - Nolan, Steven P.
PY - 2011/4/26
Y1 - 2011/4/26
N2 - The synthesis and characterization of two new ruthenium indenylidene complexes [RuCl2(SIPr)(Py)-(Ind)] 6 and [RuCl2(SIPr) (3-BrPy)-(Ind)] 7 featuring the sterically demanding N-heterocyclic carbene 1,3-bis(2,6-di isopropylphenyl)-4,5-dihydroimidazol-2-ylidene (SIPr) are reported. Remarkable activity was ob-served with these complexes in ring closing, enyne, and cross metathesis of olefins at low catalyst loadings. The performance of SIPr-bearing complexes 6 and 7 as well as [RuCl2(SIPr) (PCy3)-(Ind)] 5 in ring opening metathesis polymerization is also disclosed. This work highlights the enormous influence of the neutral "spectator" ligands on catalyst activity and stability.
AB - The synthesis and characterization of two new ruthenium indenylidene complexes [RuCl2(SIPr)(Py)-(Ind)] 6 and [RuCl2(SIPr) (3-BrPy)-(Ind)] 7 featuring the sterically demanding N-heterocyclic carbene 1,3-bis(2,6-di isopropylphenyl)-4,5-dihydroimidazol-2-ylidene (SIPr) are reported. Remarkable activity was ob-served with these complexes in ring closing, enyne, and cross metathesis of olefins at low catalyst loadings. The performance of SIPr-bearing complexes 6 and 7 as well as [RuCl2(SIPr) (PCy3)-(Ind)] 5 in ring opening metathesis polymerization is also disclosed. This work highlights the enormous influence of the neutral "spectator" ligands on catalyst activity and stability.
U2 - 10.1002/chem.201003082
DO - 10.1002/chem.201003082
M3 - Article
SN - 0947-6539
VL - 17
SP - 5045
EP - 5053
JO - Chemistry - A European Journal
JF - Chemistry - A European Journal
IS - 18
ER -