| abstract |
The invention relates to the chemistry of organophosphorus compounds, in particular to 0,0-diethyl-S- (N-methyl-n-pyrrolin-1-yl-2) carbamoylmethyl dithiophosphate, which has nematicidal activity and can be used in agriculture. The purpose of the invention is the creation of new more active compounds of the specified class. They are obtained from potassium 0,0-diethyldithiophosphate and 2- (N-methyl-N-chloroacetamido) pyrroline-1 in absolutized acetonitrile for 3 hours. The remaining oil is purified by thin layer chromatography. The yield of the target product 80%, so pl. 121-122C, CHNOPS gross formula. The compound obtained has an increased activity against potato stem nematode compared with heterofos with less toxicity of LD120 and 30-70 mg / kg, respectively. 1 tab. |