Design, synthesis and insecticidal activity of novel anthranilic diamides with benzyl sulfide scaffold

A series of novel anthranilic diamides with benzyl sulfide scaffold were synthesized, in which N-pyridylpyrazole moiety generally regarded as key pharmacophore was abandoned. The target compounds were characterized by H-1 NMR, C-13 NMR, F-19 NMR and HRMS. The preliminary bioassays indicated that half of the title compounds were endowed with good insecticidal activities against armyworm (Mythimna sepatara) at the concentration of 500 mg/L. Exhilaratingly, the synthesized compound 3a was also active against Tetranychus cinnabarinus at 100 mg/L. The difference in activities between the target compounds was influenced by the substituents, which provided some hints for further investigation on structure modifications. (c) 2013 Zhong Li. Published by Elsevier B.V. on behalf of Chinese Chemical Society. All rights reserved.