Synthesis and bioactivities of novel trifluoromethylated pyrazole oxime ether derivatives containing a pyridyl moiety

A variety of novel 3-trifluoromethyl substituted pyrazole oxime ether derivatives containing a pyridyl moiety were designed and synthesized in satisfactory yields. Their structures were confirmed by H-1 NMR, C-13 NMR, and elemental analysis. The preliminary bioassays indicated that some of the title compounds showed potential insecticidal activities against Aphis craccivora, and some compounds also displayed plant growth regulatory activities.