Substrate scope of various N-aryl acrylamides 1^a.

^aReaction conditions: 1 (0.2 mmol), 4CzIPN (2 mol%), TBAO (3 or 4 equiv.), anhydrous DMF (0.1 M), r.t., 12–48 h, under a N₂ atmosphere.

^bMeI was added after completion of the reaction.

^cReductive deuteration product was isolated.

^dTwo regioisomers were isolated as an inseparable mixture.