Mild Electrophilic Trifluoromethylation of Carbon‐ and Sulfur‐Centered Nucleophiles by a Hypervalent Iodine(III)–CF₃ Reagent

Inexpensive, recyclable, and activable: these are the features of a new mild electrophilic trifluoromethylation reagent that can be used to transfer a CF3 group to C-centered nucleophiles, such as β-keto esters and α-nitro esters, and to S-centered nucleophiles (see scheme).