反应详情

N-Methyl-N1 -(2-mercaptoethyl)thiourea (3.85 g) in dry ethanol (10 ml) was added to a solution of sodium (1.18 g) in dry ethanol (50 ml) and the mixture was stirred at room temperature for 1 hour. 4-Chloromethyl-5-methylimidazole hydrochloride (4.29 g) was added portionwise over one hour to this stirred mixture at room temperature. The mixture was stirred at room temperature for a further hour and heated under reflux for 1/2 hour, cooled and filtered. The filtrate was evaporated to an oily solid which was recrystallised from water to give N-methyl-N1 -[2-((5-methyl-4-imidazolyl)methylthio)ethyl]-thiourea (3.2 g) m.p. 149°-151° C.

1. stirringThe mixture was stirred at room temperature for a further hour
2. temperatureheated
3. temperatureunder reflux for 1/2 hour
4. temperaturecooled
5. filtrationfiltered
6. customThe filtrate was evaporated to an oily solid which
7. customwas recrystallised from water