反应详情

To a solution of tert-butyl N-[(1R)-2-[4-amino-3-(2-fluoro-4-phenoxy-phenyl)pyrazolo[3,4-d]pyrimidin-1-yl]-1-methyl-ethyl]carbamate (2.56 g, 5.35 mmol) in DCM (20 mL) was added 4N HCl in dioxane (15 ml). After stirring 18 h at room temperature, the reaction was diluted with DCM (100 mL) and extracted with water (200 mL). The aqueous layer was washed again with DCM (50 mL). The aqueous layer was placed in a 2 L beaker along with ethyl acetate (50 mL) and stirred while adding NaOH (beads) to adjust the pH to ˜11. More ethyl acetate (100 mL) was added and then the layers were separated and the aqueous layer was washed with ethyl acetate. The combined organic layers were washed with brine and then dried (MgSO4), filtered and concentrated to obtain 1.8 g (90%) of 1-[(2R)-2-aminopropyl]-3-(2-fluoro-4-phenoxy-phenyl)pyrazolo[3,4-d]pyrimidin-4-amine as a solid.

1. extractionextracted with water (200 mL)
2. washThe aqueous layer was washed again with DCM (50 mL)
3. stirringstirred
4. additionwhile adding NaOH (beads)
5. additionMore ethyl acetate (100 mL) was added
6. customthe layers were separated
7. washthe aqueous layer was washed with ethyl acetate
8. washThe combined organic layers were washed with brine
9. dry with materialdried (MgSO4)
10. filtrationfiltered
11. concentrationconcentrated