反应详情

温度

0 °C

To a cooled (0° C.) solution of trans-4-(5-bromo-2-(2,5-dimethyl-1H-pyrrol-1-yl)-6-methylpyrimidin-4-ylamino)cyclohexanol (1.45 g, 3.82 mmol) in tetrahydrofuran (40 mL) was added sodium hydride (60% dispersion in oil, 459 mg, 11.5 mmol). After 40 minutes, methyl iodide was added (262 uL, 4.21 mmol) and the mixture was stirred at 0° C. for 2 hours. The ice bath was removed and continued to stir for 3 hours then quenched with methanol and concentrated. The residue was dissolved in ethyl acetate and washed with saturated ammonia chloride (2×), brine, dried (MgSO4), filtered and concentrated. The crude product was purified by flash chromatography eluting with hexanes/methyltertbutyl ether (5-25%) to afford 5-bromo-2-(2,5-dimethyl-1H-pyrrol-1-yl)-N-(trans-4-methoxycyclohexyl)-6-methyl pyrimidin-4-amine (1.10 g, 73%).

1. customThe ice bath was removed
2. stirringto stir for 3 hours
3. customthen quenched with methanol
4. concentrationconcentrated
5. dissolutionThe residue was dissolved in ethyl acetate
6. washwashed with saturated ammonia chloride (2×), brine
7. dry with materialdried (MgSO4)
8. filtrationfiltered
9. concentrationconcentrated
10. customThe crude product was purified by flash chromatography
11. washeluting with hexanes/methyltertbutyl ether (5-25%)