反应详情

To a solution of N-{2-[(2R)-4-(3-chloro-5-hydroxymethyl-pyridin-2-yl)-2-methyl-piperazin-1-yl]-6-trifluoromethyl-3H-benzoimidazol-4-yl}-3,4,5-trifluoro-benzamide (120 mg, 0.2 mmol, Example 170c) in THF (1 mL) was added BH3. THF (0.6 mL, 0.6 mmol, Aldrich) dropwise with stirring at 0° C. The mixture was heated at reflux for 5 h, cooled to room temperature and diluted with 1:1 mixture of MeOH and 1N NaOH (2 mL). The mixture was stirred at room temperature for 30 min and extracted with EtOAc (2×20 mL). The combined organic extracts were washed with brine (10 mL), dried over Na2SO4 and filtered. The filtrate was evaporated in vacuo and the residue was purified by silica gel column chromatography, eluting with 5% MeOH/CH2Cl2 to give the title compound as a white solid. MS (ESI, pos. ion) m/e: 586 (M+1).

1. temperatureThe mixture was heated
2. temperatureat reflux for 5 h
3. extractionextracted with EtOAc (2×20 mL)
4. washThe combined organic extracts were washed with brine (10 mL)
5. dry with materialdried over Na2SO4
6. filtrationfiltered
7. customThe filtrate was evaporated in vacuo
8. customthe residue was purified by silica gel column chromatography
9. washeluting with 5% MeOH/CH2Cl2