When i Pr 2 NH 31 is employed as substrate, α-C-H cyanation is also not observed; instead, benzamide 33 is obtained in 67% yield, in which an i Pr group has been removed from the amino moiety. This is consistent with previous observations that i Pr-substituted amines undergo oxidative dealkylation reactions in the presence of FeCl 3 /PA/PhCO 3 t Bu. In the reaction shown in Scheme 5, oxidative dealkylation could proceed through a similar pathway as α-C-H cyanation (see proposed mechanism below, Scheme 6) -with the difference that the initially formed hemiaminal undergoes hydrolysis to i PrNH 2 , which in turn reacts with PhCO 3 t Bu to form benzamide 33.