Radiosynthesis and Evaluation of [¹⁸F]Selectfluor bis(triflate)

Selectfluor, one of the most reactive and commonly used electrophilic fluorinating N–F reagents, has been radiolabeled with 18F. The resulting new [18F]‐labeled N–F reagent is safe, nontoxic, and easy to handle. The combined use of [18F]Selectfluor bis(triflate) and AgOTf allows for the preparation of electron‐rich 18F‐aromatic compounds through a simple “shake and mix” protocol at room temperature (see scheme; SA=specific activtiy).