反应详情

温度

-30 °C

In a 50 mL, 3-neck RBF equipped with a magnetic stirrer, calcium chloride guard tube and thermo pocket was charged N4-(3-aminophenyl)-5-fluoro-N2-(4-((2-methoxyethoxy)methoxy)phenyl)pyrimidine-2,4-diamine (0.380 g) in DCM (10 mL) and was cooled to −30° C. To the reaction mixture was slowly added acryloyl chloride solution in DCM (0.090 g in 5.0 mL DCM) and the reaction mixture was stirred at −30° C. for approx. 40 minutes. The reaction was monitored on TLC using chloroform:methanol (9.6:0.4) as mobile phase. The reaction mixture was poured into water (100 mL) and basified using sodium bicarbonate. The reaction mixture was extracted with DCM (25 mL×2) and the combined organic layers were washed with 50 mL brine solution. The organic layer was dried over sodium sulfate and concentrated completely under reduce pressure at 40° C. The crude product was purified by column chromatography eluting in 35% of ethyl acetate in hexane to give 0.36 g of N-(3-((5-fluoro-2-((4-((2-methoxyethoxy)methoxy)phenyl)amino)pyrimidin-4-yl)amino)phenyl)acrylamide.

1. customIn a 50 mL, 3-neck RBF equipped with a magnetic stirrer, calcium chloride guard tube
2. extractionThe reaction mixture was extracted with DCM (25 mL×2)
3. washthe combined organic layers were washed with 50 mL brine solution
4. dry with materialThe organic layer was dried over sodium sulfate
5. concentrationconcentrated completely
6. customat 40° C
7. customThe crude product was purified by column chromatography
8. washeluting in 35% of ethyl acetate in hexane