The nucleophilic substitution of potassium salts of dicarbonylimide 3a～3g with 2-chloro- 1-oxy-5-chloromethylpyridine prepared by oxidation of the nitrogen of 2-chloro-5-chloromethylpyridine gave seven new N-(2-chloro-1-oxy-5-pyridinemethyl)dicarbonylimides via conventional method and microwave irradiation technique. By comparison of the two methods, using microwave irradiation as the heating resource under normal pressure possessed such advantages as short reaction time, environmentally benign procedures, easy purification and high yields over the conventional stirring at ambient temperature. The structures of these synthetic target compounds were confirmed by elemental analyses, FT-IR, GC-MS, ¹H NMR and ¹³C NMR spectra. The preliminary biological tests showed that certain compounds have excellent pesticidal activities.

Key words: oxidization reaction, N-(2-chloro-1-oxy-5-pyridinemethy)dicarbonylimide, nucleophilic substitution, biological activity, microwave irradiation