反应详情

温度

120 °C

To a flask was added 2,4-dichlorofuro[3,2-d]pyrimidine (0.80 g, 4.23 mmol, ArkPharm) and DMF (3.0 mL). 2,2,2-Trifluoroethanamine (1.05 g, 10.58 mmol, Acros) was added. The mixture was heated in a microwave at about 120° C. for about 15 min. The mixture was diluted with Et2O (100 mL). The mixture was washed with water (3×25 mL). The combined aqueous layer was extracted with Et2O (2×50 mL). The combined organic layers were dried over Na2SO4, filtered, and concentrated in vacuo. The residue was transferred neat and was purified by preparative TLC eluting with 3:1 hexanes/EtOAc to give 2-chloro-N-(2,2,2-trifluoroethyl)furo[3,2-d]pyrimidin-4-amine (0.76 g, 71%): LC/MS (Table 2, Method h) Rt=1.85 min; MS m/z: 252, 254 (M+H)+.

1. washThe mixture was washed with water (3×25 mL)
2. extractionThe combined aqueous layer was extracted with Et2O (2×50 mL)
3. dry with materialThe combined organic layers were dried over Na2SO4
4. filtrationfiltered
5. concentrationconcentrated in vacuo
6. customwas purified by preparative TLC
7. washeluting with 3:1 hexanes/EtOAc