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Issue 20, 2013
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Ruthenium-based complexes containing a benzimidazolium tag covalently connected to N-heterocyclic carbeneligands: environmentally friendly catalysts for olefin metathesis transformations

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Abstract

Two ruthenium-based pre-catalysts containing an ionic tag covalently connected to a N-heterocyclic carbene (NHC) ligand are reported. These novel complexes, bearing a polar benzimidazolium group, are air-stable and can be easily prepared from commercially available reagents. The quaternary benzimidazolium tag allows the efficient separation of ruthenium waste from the metathesis product after reaction. Application in several olefin metathesis transformations leads to desired products of high purity, which exhibit ruthenium contamination levels as low as 1 ppm after simple filtration through a pad of silica gel.

Graphical abstract: Ruthenium-based complexes containing a benzimidazolium tag covalently connected to N-heterocyclic carbene ligands: environmentally friendly catalysts for olefin metathesis transformations

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Supplementary files

Article information


Submitted
28 Nov 2012
Accepted
19 Dec 2012
First published
19 Dec 2012

Dalton Trans., 2013,42, 7354-7358
Article type
Paper

Ruthenium-based complexes containing a benzimidazolium tag covalently connected to N-heterocyclic carbene ligands: environmentally friendly catalysts for olefin metathesis transformations

M. Klučiar, K. Grela and M. Mauduit, Dalton Trans., 2013, 42, 7354
DOI: 10.1039/C2DT32856A

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