反应详情

温度

80 °C

To a solution of 5-(4-bromo-2-fluorophenyl)pyrazin-2-amine (309 mg, 1.15 mmol) in DMSO (5 mL) was added K2CO3 (317 mg, 2.3 mmol). The mixture was sparged with N2 several times. Pd(PPh3)4 (66 mg, 0.058 mmol) and (2-(1-methylethylsulfonamido)-phenyl)boronic acid (280 mg, 1.15 mmol) were added and the resultant mixture sparged with N2. The mixture was heated at 80° Celsius for 14 hours before cooling to rt and diluting with water (70 mL). The precipitate was collected, rinsed with water, air dried, and then purified by HPLC to give the title compound (40 mg, 9%). MS (ESI): mass calcd. for C19H19FN4O2S, 386.12; m/z found, 387.1 [M+H]+. 1H NMR (300 MHz, CD3OD) δ 8.72 (s, 1H), 8.25 (d, J=1.2, 1H), 8.16 (m, 1H), 7.50 (d, J=7.8, 1H), 7.47-7.34 (m, 5H), 3.15-3.03 (m, 1H), 1.23 (d, J=6.8, 6H).

1. customThe mixture was sparged with N2 several times
2. customthe resultant mixture sparged with N2
3. temperaturebefore cooling to rt
4. additiondiluting with water (70 mL)
5. customThe precipitate was collected
6. washrinsed with water, air
7. customdried
8. custompurified by HPLC