Heterogeneous copper on iron catalyst serves as an efficient alternative copper source for arylation reactions using hypervalent iodonium salts. The copper(0) catalyst affords meta-arylation of pivalanilides, while 2-ethynylanilides undergo oxidative carboarylation–ring closure with diaryliodonium salts.
Key words
biaryls - copper - coupling - heterocycles - iron