The Cu-catalyzed transamidation of tertiary amides 1^a.

^aReaction conditions: 1a (0.20 mmol), Selectfluor (0.30 mmol), CuBr₂ (4 μmol, 2.0 mol% of Cu), and MeCN (1.0 mL) at 80 °C for 1 h under argon. To isolate the product as N-benzylamides, the one-pot transamidation was carried out for 3–24 h. For details, see ESI.

^bIsolated yield of ethyl 3-phenylpropionate.