A Ritter-Type Reaction: Direct Electrophilic Trifluoromethylation at Nitrogen Atoms Using Hypervalent Iodine Reagents
作者:Katrin Niedermann、Natalja Früh、Ekaterina Vinogradova、Matthias S. Wiehn、Aitor Moreno、Antonio Togni
DOI:10.1002/anie.201006021
日期:2011.2.1
Acid‐catalyzed electrophilictrifluoromethylation of nitriles in the presence of azoles leads to N‐(trifluoromethyl)imine derivatives. The source of the trifluoromethyl group is a readily prepared and easy‐to‐handle hypervalent iodine(III) reagent (see scheme; HNTf2=bis(N‐(trifluoromethanesulfonyl)imide). This Ritter‐type reaction is astraightforward approach to N‐(trifluoromethyl)imidoyl azoles, compounds otherwise