反应详情

Diethyl chloromalonate (9.73 g, 50 mmol) was added to a stirred mixture of 3-hydroxy-2-aminopyridine (5.51 g, 50 mmol), triethylamine (6.97 mL, 50 mmol) and EtOH (100 mL) at room temperature. The mixture was heated at reflux for 17 h and allowed to attain room temperature. The precipitate formed was filtered off, washed with EtOH and dried to give the product as a white solid: yield 3.85 g (35%); mp 160-162° C. Anal. (C10H10N2O4) C, H, N.

1. temperatureThe mixture was heated
2. temperatureat reflux for 17 h
3. customto attain room temperature
4. customThe precipitate formed
5. filtrationwas filtered off
6. washwashed with EtOH
7. customdried