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