反应详情

tert-Butyl 2-(4-((4-(2-(2-amino-2-oxoethyl)phenethyl)-5-(trifluoromethyl)pyrimidin-2-yl)amino)phenyl)piperidine-1-carboxylate (I41) (0.087 g, 0.15 mmol) was dissolved in dry DCM (5 mL) under an atmosphere of nitrogen. Trifluoroacetic acid (0.351 mL, 4.58 mmol) was added to the solution and the reaction was stirred at room temperature for 22 hours. Volatiles were removed in vacuo, EtOAc (20 mL) and sat. aq. NaHCO3 (15 mL) were added to the residue and the layers were separated. The aqueous layer was extracted with EtOAc (15 mL), the combined organics were washed with water (50 mL), brine (50 mL), dried (MgSO4), filtered and concentrated in vacuo to give a pale yellow solid which was taken up in DCM (˜10 mL) and methanol (˜1 mL) and concentrated in vacuo. The process was repeated with only DCM twice to give the title compound (8) (0.064 g, 89% yield) as a pale yellow solid;

1. customVolatiles were removed in vacuo, EtOAc (20 mL) and sat. aq. NaHCO3 (15 mL)
2. additionwere added to the residue
3. customthe layers were separated
4. extractionThe aqueous layer was extracted with EtOAc (15 mL)
5. washthe combined organics were washed with water (50 mL), brine (50 mL)
6. dry with materialdried (MgSO4)
7. filtrationfiltered
8. concentrationconcentrated in vacuo
9. customto give a pale yellow solid which
10. concentrationmethanol (˜1 mL) and concentrated in vacuo