Fig. 4: Mechanistic studies of enamide reductive hydroalkylation.

a Radical clock experiments. (b) Deuterium-labelling experiments. (c) DFT calculations. DFT calculations were also performed at the B3LYP-D3(BJ)/6-311G(d,p)-SDD-SMD(DMA)//B3LYP-D3(BJ)/6-31G*-LANL2DZ-SMD(DMA) level of theory. For more details, see Supplementary Notes 3 and 5.