2 research outputs found
CoCl(PPh<sub>3</sub>)<sub>3</sub> as Cyclotrimerization Catalyst for Functionalized Triynes under Mild Conditions
No full textThe
ubiquitary CoÂ(I) complex CoClÂ(PPh<sub>3</sub>)<sub>3</sub> was
found to be a convenient catalyst for the [2 + 2 + 2] cycloaddition
of functionalized triynes under mild reaction conditions and devoid
of any additional additive, yielding the substituted arene compounds.
Successful development of synthetic routes to various triynes and
the subsequent cyclotrimerization key step gave systematic access
to a variety of different bi- and triaryls with good to excellent
yields for the cyclization
Synthesis and Catalytic Activity of [Cp′Co(COD)] Complexes Bearing Pendant N‑Containing Groups
No full textThe novel CoÂ(I)-complex [Cp<sup>CN</sup>CoÂ(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
