反应详情

A solution of 4,6-dichloro-2-methylsulfanyl-pyrimidine-5-carbaldehyde (1.0 g, 4.5 mmol) and Et3N (1.26 mL, 9.0 mmol) in THF (25 mL) was mixed with 2,4-difluoroaniline (0.50 mL, 4.9 mmol). The resultant mixture was stirred at room temperature for 2 hours before bis(2,2,2-trifluoroethyl) (methoxycarbonyl-methyl)phosphonate (0.95 mL, 4.5 mmol) was added. After stirring at room temperature for additional 48 hours, the mixture was diluted with dichloromethane (50 mL) and then washed with H2O (2×25 mL). The organic layer was dried over Na2SO4, filtered and concentrated. This crude product was applied to flash chromatography (EtOAc/Hexane, 1:5) to provide the title compound (0.79 g, 52%): MS (ES) m/z 340 (M+H)+; 1H-NMR(CDCl3) δ 2.24 (s, 3H), 6.79 (d, J=9.8 Hz, 1H), 7.06 (m, 2H), 7.29 (m, 1H), 8.03 (d, J=9.8 Hz, 1H).

1. additionwas added
2. washwashed with H2O (2×25 mL)
3. dry with materialThe organic layer was dried over Na2SO4
4. filtrationfiltered
5. concentrationconcentrated