| abstract |
NEW MATERIAL:Compounds of formula I (X is halogen atom, lower alkyl, lower acyloxy; Y is oxygen atom, sulfur atom; Z 1 , Z 2 are lower alkoxy, lower alkylthio, phenyl, phenoxy; n is integer of 0W3). n EXAMPLE: O,O-Diethyl-O-(N-methoxypyridine-2-carboxyimidoyl)thionophosphate. n USE: Insecticide. n PREPARATION: N-Methoxypyridinecarboxyimide acid of formula II is dissolved in a solvent such as acetonitrile and an alkaline substance such as potassium carbonate is added thereto. The mixture is heated under stirring up to 50°C and a phosphoric acid halide of formula IV (Hal is halogen) such as O,O-diethylthionophosphate chloride is added dropwise to effect the reaction at 50°C. n COPYRIGHT: (C)1981,JPO&Japio |