Fig. 1

Nickel-catalysed C–H arylation. a Ni(II)-catalysed C–H bond arylation with the diaryliodonium salt oxidant. b Ni(II)-catalysed the C–H bond arylation with the phenyliodide oxidant. c Proposed mechanism of Ni(II)-catalysed C–H arylation with a diaryliodonium salt or a phenyliodide