反应详情

温度

60 °C

A solution of 5-bromo-2-chloro-4-methoxypyrimidine (1.2 g, 5.37 mmol) in THF (20 mL) was treated with TEA (1.57 mL, 10.74 mmol) and isopropylamine (0.7 mL, 8.1 mmol) and heated at 60° C. for 5 h. The mixture was cooled to RT, treated with water, extracted with EtOAc (2×) and the combined organics were washed with brine, dried over Na2SO4, concentrated to dryness and purified by silica gel chromatography (EtOAc/Hex) to afford 5-bromo-N-isopropyl-4-methoxypyrimidin-2-amine (0.84 g, 634%). 1H NMR (400 MHz, DMSO-d6): δ 8.10 (s, 1H), 7.17 (br s, 1H), 3.96-3.94 (m, 1H), 3.87 (s, 3H), 1.12 (d, J=6.5 Hz, 6H); MS (ESI) m/z: 246.0 (M+H+).

1. temperatureThe mixture was cooled to RT
2. extractionextracted with EtOAc (2×)
3. washthe combined organics were washed with brine
4. dry with materialdried over Na2SO4
5. concentrationconcentrated to dryness
6. custompurified by silica gel chromatography (EtOAc/Hex)