Abstract: 3 - Bromo -1 - (3 - chloro-pyridine -2 - yl)-1H-pyrazole -5 - methyl ethyl is the synthesis of novel RyR chlorine pesticides pests amide the key intermediate of an important raw material , the thesis of 2,3 - dichloropyridine as starting materials, by nucleophilic substitution of hydrazine hydrate, maleic acid diethyl ester cyclization obtained 2-(3-Chloro-1-pyridyl)-5-O-3 -pyrazole ethyl methane; via benzenesulfonyl chloride esterification, hydrogen bromide bromide bromide obtained to 1 - (3 - chloro -2 - pyridyl) -4,5 a-dihydro-1H-pyrazole-5- ethyl verified by NMR and melting point of the structure. Investigated molar ratio, reaction temperature and reaction time on the reaction, the optimal process conditions.
Keywords: Chlorantraniliprole , Synthesis, Insecticides, Pyridine
