THIOPHOSPHORIC ACID ESTER DERIVATIVE, PRODUCTION THEREOF AND SOIL INSECT PEST CONTROLLING AGENT CONTAINING SAID DERIVATIVE AS ACTIVE INGREDIENT

摘要

NEW MATERIAL:O, O-Dimethyl O-1-( N-methoxyimino ) ethyl thiophosphate expressed by formula I. USE:A soil insect pest controlling agent. PREPARATION:O,O-Dimethyl thiophosphoryl chloride expressed by formula II is reacted with N-methoxyacetamide expressed by formula III, preferably at 1:1-2 equiv. ratio in the presence of a base (e.g. NaOH), normally in a solvent, such as toluene, methyl ethyl ketone or THF, preferably at 0-100 deg.C for 30min-24hr.