Cu-catalyzed iododeboronation of aryl boronic acids using iodide is a useful reaction for the synthesis of aryl iodides (Scheme 1a). More importantly, this reaction accommodates iodide radioisotopes providing products that have important applications within in vivo imaging and radiotherapy. Scheme 1. (a) General representation of Cu-catalyzed iododeboronation. (b) Tentative description of the iododeboronation reaction.