反应详情

3-Benzyl-6-(methylamino)pyrimidin-4(3H)-one (compound 5A) (10 g, 46.5 mmol, 1 eq) and diethyl methylmalonate (16 mL, 93 mmol, 2 eq) were heated in phenyl ether (20 mL, 127 mmol) at 240° C. for 3 hours. The solution was cooled and diethyl ether (100 mL) was added. A precipitate formed which was filtered and washed with ether to give 10.5 g of the title compound as a tan solid (76%). [M+H] calc'd for C16H15N3O3, 298; found, 298.

1. temperatureThe solution was cooled
2. customA precipitate formed which
3. filtrationwas filtered
4. washwashed with ether