反应详情

In 600 ml of ethanol was dissolved 31 g of 5-acetoxymethyl7-chloro-2-methyl-s-triazolo[1,5-a]pyrimidine, and 29.5 g of thiourea was added thereto and the mixture was refluxed for 10 minutes. The reaction mixture was ice-cooled and resulting precipitated crystal was collected by filtration. The crystal was dissolved in 600 ml of a 5 % potassium hydroxide and the mixture was stirred for 30 minutes, ice-cooled and adjusted to pH 2 with 2N hydrochloric acid. Precipitated crystal was collected by filtration, washed with water and dried to obtain 16.33 g of the title compound.

1. additionwas added
2. temperaturethe mixture was refluxed for 10 minutes
3. temperaturecooled
4. customresulting
5. customprecipitated crystal
6. filtrationwas collected by filtration
7. dissolutionThe crystal was dissolved in 600 ml of a 5 % potassium hydroxide
8. temperatureice-cooled
9. customPrecipitated crystal
10. filtrationwas collected by filtration
11. washwashed with water
12. customdried