Task-specific ionic liquids as reaction media for the cobalt-catalysed cyclotrimerisation reaction of arylethynes

The use of nitrile-functionalised ionic liquids as solvents for cobalt-catalysed cyclotrimerisation reactions of monosubstituted aromatic alkynes is reported; the nitrile functionality stabilises the transient cobalt(I) catalytic species and ensures good conversions.

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