反应详情

To a solution of tert-butyl (1-{4-[2-(2-aminopyridin-3-yl)-5-{3-[(2-hydroxy-2-methylpropanoyl)amino]phenyl}-3H-imidazo[4,5-b]pyridin-3-yl]phenyl}cyclobutyl)carbamate (20 mg) in dichloromethane (3 mL) was added trifluoroacetic acid (0.6 mL) dropwise at room temperature. After being stirred at the same temperature for 1 h, the reaction mixture was concentrated under reduced pressure. Dichloromethane (5 mL) and MP-carbonate (Argonaout technologies 2.91 mmol/g, 200 mg) were added. The mixture was stayed for 30 min. with occasional shaking then filtered. The filtrate was concentrated under reduced pressure. To a solution of the residue in dichloromethane (5 mL) and methanol (0.5 mL) was added hydrogen chloride in ethyl acetate (4 M, 0.04 mL) at room temperature. After being stirred for 10 min., the mixture was concentrated under reduced pressure. The resulting solid was suspended with ethyl acetate and filtered to give the product (15 mg).

1. concentrationthe reaction mixture was concentrated under reduced pressure
2. additionDichloromethane (5 mL) and MP-carbonate (Argonaout technologies 2.91 mmol/g, 200 mg) were added
3. waitThe mixture was stayed for 30 min.
4. stirringwith occasional shaking
5. filtrationthen filtered
6. concentrationThe filtrate was concentrated under reduced pressure
7. additionTo a solution of the residue in dichloromethane (5 mL) and methanol (0.5 mL) was added hydrogen chloride in ethyl acetate (4 M, 0.04 mL) at room temperature
8. stirringAfter being stirred for 10 min.
9. concentrationthe mixture was concentrated under reduced pressure
10. filtrationfiltered