反应详情

温度

150 °C

A mixture of 5-(5-chloro-4-morpholinopyridin-2-ylamino)pyrazine-2-carbonitrile (50 mg, 0.16 mmol), phenylboronic acid (38 mg, 0.31 mmol), sodium carbonate (41 mg, 0.39 mmol) and Bedford catalyst (1 mg, 0.01 mmol) in a mixture of acetonitrile-water (4:1, 2.5 mL) was heated at 150° C. by microwave irradiation for 30 minutes. The crude reaction mixture was purified by ion exchange chromatography on SCX-II acidic resin (500 mg) eluting with methanol, then 2M ammonia-methanol. The basic fractions were combined and solvent was evaporated. Preparative TLC, eluting with ethyl acetate-hexane (2:3) gave 5-(4-morpholino-5-phenylpyridin-2-ylamino)pyrazine-2-carbonitrile as a yellow solid (16 mg, 28%).

1. customThe crude reaction mixture
2. customwas purified by ion exchange chromatography on SCX-II acidic resin (500 mg)
3. washeluting with methanol
4. customsolvent was evaporated
5. washPreparative TLC, eluting with ethyl acetate-hexane (2:3)