FIELD: organic chemistry, chemical technology, medicine, phthisiology.
SUBSTANCE: 4-thioureidoiminomethyl-pyridinium perchlorate is prepared from 4-pyridine aldehyde and thiosemicarbazide in the presence of 48-55% perchloric acid for a single stage. The parent reagents - 4-pyridine aldehyde : thiosemicarbazide are taken in the ratio = 1.3:1.0, reaction period is 3-4 h, and reaction temperature is maintained in the range 80-85°C. Invention provides increasing yield and purity of the end product, simplifying technology and reducing cost in its preparing.
EFFECT: improved preparing method.
7 cl, 8 ex
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