Methylthiosemicarbazide synthesis process

The invention discloses a methylthiosemicarbazide synthesis process comprising the following steps: thiourea is dissolved in a solvent; a catalyst is added, and the temperature is increased to 10-200 DEG C under stirring; methyl chloride gas is delivered and a reaction is allowed; when the reaction...

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Bibliographic Details
Main Authors WANG TONGTAO, LYU MINGYONG, YANG MINGSHENG, LI ZHENXING, SUN XUBING, FENG XUNJUAN
Format Patent
LanguageEnglish
Published 26.08.2015
Subjects
ACYCLIC OR CARBOCYCLIC COMPOUNDS
CHEMISTRY
METALLURGY
ORGANIC CHEMISTRY
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Summary:The invention discloses a methylthiosemicarbazide synthesis process comprising the following steps: thiourea is dissolved in a solvent; a catalyst is added, and the temperature is increased to 10-200 DEG C under stirring; methyl chloride gas is delivered and a reaction is allowed; when the reaction is finished, nitrogen gas is delivered for purging residual hydrogen chloride gas; hydrazine hydrate is dropped in under a temperature of 30-90 DEG C, and a reaction is carried out; when the reaction is finished, the solvent is distillated; the temperature is reduced to -10 DEG C to 50 DEG C, and a solid material is obtained by filtration; and drying is carried out, such that methylthiosemicarbazide is obtained.
Bibliography:Application Number: CN20151165124