反应详情

To a stirred suspension of 0.50 g (2,49 mmol) 2-amino-4-chloro-6-methylsulfanyl-pyrimidine-5-carbonitrile in 10 ml toluene under argon at room temperature were added 384 mg (2.74 mmol)p-fluorobenzeneboronic acid, 288 mg (0.25 mmol) tetrakis(triphenyl-phosphine)palladium(O) and 638 mg (4.98 mmol) anhydrous potassium carbonate. The reaction mixture was heated at reflux for 16 h, then cooled to room temperature and partitioned between ethyl acetate and water. The organic phase was washed with brine, dried over sodium sulfate, and concentrated in vacuo. Chromatography (1/1 ethyl acetate/hexane) followed trituration in ether/hexane afforded 350 mg (54%) 2-amino-4-(4-fluoro-phenyl)-6-methylsulfanyl-pyrimidine-5-carbonitrile as a yellow crystalline solid. EI-MS m/e (%): 260 (M+, 37), 259 ([M—H]+, 100).

1. temperatureThe reaction mixture was heated
2. temperatureat reflux for 16 h
3. custompartitioned between ethyl acetate and water
4. washThe organic phase was washed with brine
5. dry with materialdried over sodium sulfate
6. concentrationconcentrated in vacuo