FIELD: organic chemistry. SUBSTANCE: product: 2-propionyl-5-(4-nitrophenylthio)-thiazole, yield is 78.7% m. p. is 227-229 C (with decomposition). 2-Propionylthio-5-(4-aminophenylthio)-thiazole, yield is 96.3% m. p. is 185-187 C. 2-Amino-5-(1-methyl-1H-tetrazole-5-yl-thio)-thiazole, yield is 48.5% m. p. is 186-188 C (with decomposition). Synthesized compounds were used for synthesis of pharmacological drugs used for therapy of rheumatism, nephritis, thrombocytopenia. EFFECT: improved method of synthesis. 6 cl
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