Intramolecular C–C Bond Coupling of Nitriles
to a Diimine Ligand in Group 7 Metal Tricarbonyl Complexes
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Abstract
Dissolution
of M(CO)<sub>3</sub>(Br)(L<sup>Ar</sup>) [L<sup>Ar</sup> = (2,6-Cl<sub>2</sub>-C<sub>6</sub>H<sub>3</sub>-NCMe)<sub>2</sub>CH<sub>2</sub>] in either acetonitrile [M = Mn, Re] or benzonitrile (M = Re) results
in C–C coupling of the nitrile to the diimine ligand. When
reacted with acetonitrile, the intermediate adduct [M(CO)<sub>3</sub>(NCCH<sub>3</sub>)(L<sup>Ar</sup>)]Br forms and undergoes
an intramolecular C–C coupling reaction between the nitrile
carbon and the methylene carbon of the β-diimine ligand
