Olefin Metathesis Featuring Ruthenium Indenylidene Complexes with a Sterically Demanding NHC Ligand

Cesar A. Urbina-Blanco; Anita Leitgeb; Christian Slugovc; Xavier Bantreil; Herve Clavier; Alexandra M. Z. Slawin; Steven P. Nolan

doi:10.1002/chem.201003082

Olefin Metathesis Featuring Ruthenium Indenylidene Complexes with a Sterically Demanding NHC Ligand

Cesar A. Urbina-Blanco, Anita Leitgeb, Christian Slugovc, Xavier Bantreil, Herve Clavier, Alexandra M. Z. Slawin, Steven P. Nolan

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Abstract

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.

Original language	English
Pages (from-to)	5045-5053
Number of pages	9
Journal	Chemistry - A European Journal
Volume	17
Issue number	18
Early online date	23 Mar 2011
DOIs	https://doi.org/10.1002/chem.201003082
Publication status	Published - 26 Apr 2011

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title = "Olefin Metathesis Featuring Ruthenium Indenylidene Complexes with a Sterically Demanding NHC Ligand",

abstract = "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.",

author = "Urbina-Blanco, \{Cesar A.\} and Anita Leitgeb and Christian Slugovc and Xavier Bantreil and Herve Clavier and Slawin, \{Alexandra M. Z.\} and Nolan, \{Steven P.\}",

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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.

UR - https://www.scopus.com/pages/publications/79954443661

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 -

Olefin Metathesis Featuring Ruthenium Indenylidene Complexes with a Sterically Demanding NHC Ligand

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