Synthesis and Insecticidal Activities of 1,3,5-Trisubstituted- 1,3,5-hexahydrotriazine-2-N-nitroimines

A new series of 1,3,5-trisubstituted-l,3,5-hexahydrotriazine-2-N-nitroimines （3a--3j） were designed and synthesized as novel neonicotinoid analogues, and their structures were characterized by 1H NMR, IR, elemental analysis and MS. The preliminary bioassay tests showed that most of the target compounds had good insecticidal activities against Nilaparvata lugens as well as Aphis medicaginis at 500 mg/L, while compound 3i had 100% mortality against Nilaparvata lugens at 20 mg/L.