| 摘要 |
NEW MATERIAL:The compound of formula I (R<1> and R<2> are 1-4C alkyl; R<3> is 1-6C alkyl or 3-6C cycloalkyl; X and Y are O or S; Z is H or halogen; n is 0-2). EXAMPLE:O,O-dimethyl-O-(2-fluoro-4-methylthiophenyl)phosphorothioate. USE:An insecticidal, miticidal and nematocidal agent effective even to vermin resistant to organic phosphate-type insecticide. PREPARATION:The objective compound can be produced e.g. by reacting the compound of formula II (e.g. 2-fluoro-4-methylthiophenol) with the compound of formula III (e.g. O,O-dimethylthiophosphoric acid chloride), if necessary in the presence of an acid acceptor (e.g. anhydrous potassium carbonate), in a solvent (e.g. acetonitrile). The amount of the compound of formula III is preferably equimolar to the compound of formula II.
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