Thermodynamically and Kinetically Controlled Friedel—Crafts Alkenylation of Arenes with Alkynes Using an Acidic Fluoroantimonate(V) Ionic Liquid as Catalyst.

By employing superacidic fluoroantimonate ionic liquid (IL), [bmim][Sb2F11], as catalyst, not only thermodynamically-controlled but also kinetically-controlled Friedel–Crafts alkenylations of arenes with alkynes have been realized for the first time.