反应详情

To a stirred mixture of 4-chloro-2-(methylthio)pyrimidine-5-carbonitrile (0.843 g, 4.54 mmol) and zinc dust (1.48 g, 22.71 mmol) in ethanol (7.5 mL) and water (1.4 mL) was slowly added acetic acid (0.29 mL, 5.13 mmol). The resulting reaction mixture was vigorously stirred for 3 h. The solids were removed by filtration and the filtrate concentrated in vacuo. The residue was chromatographed on silica gel 60 (35 g), eluting with 10:1–20:89–70 CH2Cl2:2-propanol:hexane to give the title compound. M.S. (M+1): 152.

1. customThe resulting reaction mixture
2. customThe solids were removed by filtration
3. concentrationthe filtrate concentrated in vacuo
4. customThe residue was chromatographed on silica gel 60 (35 g)
5. washeluting with 10:1–20:89–70 CH2Cl2