Quinoline 1-oxide (I) was found to react readily with N-acylmethylpyridinium salts (II) in the presence of acetic anhydride to give N-(α-acyl-2-quinolylmethyl) pyridinium salts (III) in good yields, but no reaction was observed without acetic anhydride. Treatment of benzoyl-adduct of quinoline 1-oxide (Ia) with II in the presence of acetic anhydride also afforded III, but the yields of III were somewhat less compared with the former procedure.
