反应详情

温度

90 °C

N,N-Dibenzyl-3-methyl-4-(3-tosyl-3H-imidazo[1,2-a]pyrrolo[2,3-e]pyrazin-8-yl)cyclopentan-amine (4.47 g, 7.58 mmol) was dissolved in 1,4-dioxane (40 mL). NaOH (2 N aqueous, 4 mL) was added and the reaction mixture was heated at about 90° C. for about 80 min. The organic solvent was removed under reduced pressure and the residue was treated with saturated aqueous NH4Cl (70 mL) and extracted with DCM (2×60 mL). The combined organic extracts were washed with brine (70 mL), dried over anhydrous MgSO4 and concd under reduced pressure. The residue was purified by silica gel chromatography eluting with a gradient of 0-8% MeOH in DCM to yield N,N-dibenzyl-3-(3H-imidazo[1,2-a]pyrrolo[2,3-e]pyrazin-8-yl)-4-methylcyclopentan-amine (1.84 g, 56%) as a yellow oil: LC/MS (Table 1, Method a) Rt=2.31 min; MS m/z 436 (M+H)+.

1. customThe organic solvent was removed under reduced pressure
2. additionthe residue was treated with saturated aqueous NH4Cl (70 mL)
3. extractionextracted with DCM (2×60 mL)
4. washThe combined organic extracts were washed with brine (70 mL)
5. dry with materialdried over anhydrous MgSO4 and concd under reduced pressure
6. customThe residue was purified by silica gel chromatography
7. washeluting with a gradient of 0-8% MeOH in DCM