Evaluation of amide substrates. Yields reflect the average of two isolation experiments. Yield was determined by 1H NMR analysis using 1,3,5-trimethoxybenzene as an internal standard [a] Reaction was performed using 2.5 equivalents of 7. [b] Reaction was performed at 80 °C with 2.0 equivalents of 7; Bn=benzyl, Boc=tert-butyloxycarbonyl, cod=bis(1,5-cyclooctadiene)nickel(0).