[8+2] Cycloaddition

During a routine examination of the three-component coupling of o-alkynylbenzoyl ketones, Fischer carbene complexes, and electron-deficient alkynes, we accidentally discovered what appeared to be the first example of an [8+2]-cycloaddition reaction in a conformationally flexible system (see the equation below).  All we wanted to do was show that α,β-unsaturated Fischer carbene complexes would participate in the three-component coupling process (under construction)