Iridafurans from the reaction of [Cp*IrCl2]2 with carbonyl conjugated terminal alkynes: Dependence of product on polarity of reaction medium

Reaction of the dimeric species [Cp*IrCl2]2 with terminal alkynes containing a conjugated carbonyl group results in C–C bond formation between two or three alkyne molecules, depending on the polarity of the reaction medium. The reaction pathway has been studied experimentally and computationally.