Synthesis and Catalytic Activity of [Cp′Co(COD)]
Complexes Bearing
Pendant N‑Containing Groups
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Abstract
The novel Co(I)-complex [Cp<sup>CN</sup>Co(COD)] (Cp<sup>CN</sup> = η<sup>5</sup>-(C<sub>5</sub>H<sub>4</sub>CMe<sub>2</sub>CH<sub>2</sub>CN), COD = 1,5-cyclooctadiene; <b>3</b>) with
a substituted cyclopentadienyl ligand containing a pendant nitrile
moiety has been synthesized and characterized by X-ray diffraction.
The reactivity of the nitrile group in <b>3</b> has been investigated
regarding its behavior in cyclization reactions with alkynes, leading
to three new complexes containing pendant 2-pyridyl groups. All synthesized
complexes have been evaluated as catalysts in the [2 + 2 + 2] cycloaddition
reaction of 1,6-heptadiyne and benzonitrile
