反应详情

5-[1-(3-Pyridyl)ethyl]-2-thiouracil (3.4 g) was added to a solution of sodium ethoxide (from 0.74 g sodium) in ethanol (35 ml). Methyl iodide (2.42 g) was added over 0.5 hour at 0°. After standing for a further 2 hours at 0° the solution was evaporated to dryness. The residue was taken up in water and the pH adjusted to 7.0 and the mixture was allowed to stand at 0° overnight. The solid was filtered off to give 2-methylthio-5-[1-(3-pyridyl)ethyl]-4-pyrimidone (3.04 g) m.p. 201°-204° (from ethanol).

1. customthe solution was evaporated to dryness
2. waitto stand at 0° overnight
3. filtrationThe solid was filtered off