| 摘要 |
NEW MATERIAL:A pyridylmethyl derivative shown by the formula I [R1 is H, cyano, ethynyl, etc.; R2 is group shown by the formula II or formula III (R5 and R6 may be linked to form ring shown by the formula IV, etc.; X is halogen), etc.; Y is N atom, methylene group; with the proviso that Y shows only N atom when R2 is group shown by the formula II, formula III, etc.; R3 is H or F; R4 is H, halogen, methine, trifluoromethyl group, etc.). EXAMPLE:3'-( 4-Pyridyloxy )-alpha'-cyano-2'-pyridylmethyl-2,2-dimethyl-3-(2,2-dichlorovinyl)cycl opropanecarboxylate. USE:Useful as an insecticide and acaricide. Having high insecticidal effect on resistant noxious insects and low toxicity to warm-blooded animals. PREPARATION:A carboxylic acid shown by the formula V or an alcohol is reacted with a compound shown by the formula VI, to give a compound shown by the formula I .
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