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À propos de : Carbon Monoxide-Promoted Carbene Insertion into the Aryl Substituent of anN-Heterocyclic Carbene Ligand: Buchner Reaction in a Ruthenium CarbeneComplex        

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  • Carbon Monoxide-Promoted Carbene Insertion into the Aryl Substituent of anN-Heterocyclic Carbene Ligand: Buchner Reaction in a Ruthenium CarbeneComplex
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  • In the presence of carbon monoxide, ruthenium carbenes give a net insertion/ring expansion (Buchner reaction) into one of the aromatic rings of the N-heterocyclic carbene ligand. In alkene metathesis applications, the N-heterocyclic carbene ligand is both robust and typically inert to reactions with the metal-bound carbene. This unique reaction is completely regioselective. The complexes obtained through ring expansion were fully characterized in the solid state using X-ray crystallography and in solution using NMR and IR spectroscopy.
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