PICOLINAMIDE DERIVATIVES AND PEST CONTROLLERS CONTAINING THE SAME AS THE ACTIVE INGREDIENT

摘要

Novel compounds of general formula (1), pest controllers containing the same; and a process for the preparation of the compounds, wherein A is a free valency or optionally substituted alkylene; R1 is one or more groups which may be the same or different from each other and are selected from among hydrogen, alkoxy and haloalkoxy; R2 is hydrogen, (substituted) benzyl, (substituted) alkyl or (substituted) alkanoyl; and R3 is hydrogen, (substituted) cycloalkyl, (substituted) cycloalkenyl, (substituted) aryl, or a (substituted) heterocyclic group, with the proviso that the cases wherein R1 is hydrogen, A is a free valency or methylene, and R3 is phenyl or cyclohexyl or those wherein A is alkylene and R3 is hydrogen are excepted.