Iridium(I)‐Catalyzed Cycloisomerization of Cyclohexadienyl Alkynes

From cyclohexadienyl alkynes with a terminal alkyne unit, double cyclopropanated products were obtained in reasonable to high yields. For cyclohexadienyl alkynes substituted at the alkyne unit, cyclopropanated products were obtained in high yields. When a keto carbonyl group was introduced to cyclohexadienyl alkynes with a substituted alkyne, Alder-ene-type products were obtained in reasonable to high yields.