反应详情

To a N-methoxy-N-methyl-3-(6-(4-phenoxyphenylamino)pyrimidin-4-ylamino)benzamide (0.150 g, 0.340 mmol) at 0° C. was added 2-methylpropenylmagnesium bromide (6.8 mL, 3.4 mmol, 0.5 M solution in THF). The reaction mixture was allowed to stir at room temperature for 30 min. It was quenched with saturated NH4Cl solution (0.5 mL) and was extracted with EtOAc (2×3 mL). The combined organic layer was washed with brine, dried over Na2SO4, filtered and concentrated under reduced pressure to get a white solid, which was further purified by column chromatography (SiO2, 60-120, product getting eluted in methanol/chloroform: 2/98) to give 2-methyl-1-(3-(6-(4-phenoxyphenylamino)pyrimidin-4-ylamino)phenyl)prop-2-en-1-one (I-83) as a white solid. 1H NMR (DMSO-d6) δ ppm: 1.99 (s, 3H), 5.64 (s, 1H), 6.03 (s, 1H), 6.14 (s, 1H), 6.96-7.02 (m, 4H), 7.10 (t, J=7.6 Hz, 1H), 7.25 (d, J=7.6 Hz, 1H), 7.35-7.43 (m, 3H), 7.56 (d, J=8.8 Hz, 2H), 7.88 (d, J=8 Hz, 1H), 7.92 (s, 1H), 8.29 (s, 1H), 9.21 (s, 1H), 9.38 (s, 1H); LCMS: 423 m/e (M+1).

1. customIt was quenched with saturated NH4Cl solution (0.5 mL)
2. extractionwas extracted with EtOAc (2×3 mL)
3. washThe combined organic layer was washed with brine
4. dry with materialdried over Na2SO4
5. filtrationfiltered
6. concentrationconcentrated under reduced pressure
7. customto get a white solid, which
8. customwas further purified by column chromatography (SiO2, 60-120, product getting eluted in methanol/chloroform: 2/98)