反应详情

13.9 ml of ethyl bromopyruvate are added to a solution of 11.81 g of 2-imino-4-thiobiuret (Aldrich) in 100 ml of ethanol and the reaction mixture is heated under reflux for 3 hours (J. Med. Chem. 34, 914-918 (1991)). Subsequently, the mixture is cooled to room temperature and the reaction product is precipitated by the addition of 550 ml of ethyl acetate and filtered off. There are obtained 14.6 g of yellowish ethyl 2-guanidino-thiazole-4-carboxylate hydrobromide. MS: 214 (M)+.

1. temperaturethe reaction mixture is heated
2. temperatureunder reflux for 3 hours (J. Med. Chem. 34, 914-918 (1991))
3. customthe reaction product is precipitated by the addition of 550 ml of ethyl acetate
4. filtrationfiltered off