C-Imidoylation of esters, sulfones, sulfoxides, amides, and nitro- compds. with N-imidoylbenzotriazoles gave β-enamino esters, β-imino sulfones, β-enamino sulfoxides, β-imino amides, and α-nitro enamines resp. in good yields. Strong electron-withdrawing substitutes (esters, sulfoxides, nitroethane) tended to give enamines due to increased acidity of the α-protons, while weak electron-withdrawing substitutes(sulfones, amides) gave imines instead.