METHOD OF SYNTHESIS OF 5-CHLORO-2,1,3-BENZOTHIA- DIAZOLE

摘要

FIELD: organic chemistry, chemical technology. SUBSTANCE: invention relates to method of synthesis of 5-chloro-2,1,3-benzothiadiazole by interaction of 4-chloro-1,2-phenylenediamine with thionyl chloride in the presence of catalytic amount of dimethylformamide in organic solvent medium at 125-130 C. Invention provides increase of yield of 5-chloro-2,1,3-benzothiadiazole. EFFECT: simplified method, increased yield. 4 ex