反应详情

4-(1-Bromo-2,2-diethoxy-ethyl)-2-methylsulfanyl-pyrimidine (18-3, 0.050 g, 0.156 mmol) and 2-pyridylthiourea (0.024 g, 0.16 mmol) were stirred in 1 mL EtOH and 0.10 mL water. p-Toluenesulfonic acid monohydrate (5 mg, 0.03 mmol) was added and the reaction was heated to reflux. After 8 h an addional 30 mg (0.156 mmol) p-toluenesulfonic acid monohydrate and the reaction was refluxed an additional 16 h. The reaction was concentrated and purified by flash column chromatography (elute with a gradient: 3-6% MeOH in DCM). 1H NMR (DMSO-d6) δ 11.75 (s, 1H), 8.50 (d, 1H, J=5.4 Hz), 8.49 (m, 2H), 7.77 (t, 1H, J=6.7 Hz), 7.60 d, 1H, J=5.5 Hz), 7.13 (d, 1H, 8.2 Hz), 7.02 (t, 1H, J=6.6 Hz), 2.55 (s, 3H).

1. temperaturethe reaction was heated to reflux
2. temperaturethe reaction was refluxed an additional 16 h
3. concentrationThe reaction was concentrated
4. custompurified by flash column chromatography (
5. washelute with a gradient