反应详情

To a magnetically stirred solution of 4-amino-5-fluoro-pyrimidin-2-ol* (4.00 g, 31.0 mmol) in DMF (100 mL) was added N,N-dimethylformamide dimethyl acetal (4.00 g, 34.0 mmol). The mixture was stirred at room temperature for 72 h, diluted with diethyl ether (200 mL), and filtered. The solid product was washed with heptane to give the title compound (5.23 g, 92% yield) as a white solid: mp 240-243° C.; 1H NMR (300 MHz, DMSO-d6) δ 10.7 (bs, 1H), 8.59 (s, 1H), 7.7 (d, J=5.6 Hz, 1H), 3.18 (s, 3H), 3.06 (s, 3H); HPLC-MS (ESI) m/z 185 (M+H)+, 183 (M−H)−. *4-amino-5-fluoro-pyrimidin-2-ol can be purchased commercially.

1. filtrationfiltered
2. washThe solid product was washed with heptane