反应详情

To a slurry of (5-tosyl-5H-pyrrolo[2,3-b]pyrazin-2-yl)methanamine hydrochloride (0.50 g, 1.476 mmol, Example #5, Step C) in DCM (10 mL) was added cyclohexanecarbonyl chloride (0.221 mL, 1.623 mmol) followed by DIEA (0.644 mL, 3.69 mmol). The reaction mixture was stirred for about 4 h at ambient temperature and then saturated aqueous NaHCO3 (20 mL) and DCM (20 mL) were added to the reaction mixture. The organic layer was separated, concd in vacuo, and purified by chromatography on silica gel (40 g) eluting with 20-80% EtOAc in DCM to provide N-((5-tosyl-5H-pyrrolo[2,3-b]pyrazin-2-yl)methyl)cyclohexanecarboxamide (0.49 g, 80%) as a colorless solid: LC/MS (Table 1, Method a) Rt=2.40 min; MS m/z: 413 (M+H)+.

1. customThe organic layer was separated
2. customconcd in vacuo, and purified by chromatography on silica gel (40 g)
3. washeluting with 20-80% EtOAc in DCM