反应详情

Sodium borohydride (0.02 g; 0.530 mmol) was added to a solution of N-(2-(5-chloro-1H-indol-3-yl)ethyl)-5-(2,5-difluorobenzoyl)isoxazole-3-carboxamide (0.167 g; 0.388 mmol) in methanol (3 mL) and stirred at room temperature for 4 hours: as the reaction did not evolve anymore, some fresh sodium borohydride was added (0.02 g; 0.530 mmol) to the reaction and the resulting mixture was left stirring overnight. The mixture was diluted in a solution of sodium hydrogencarbonate saturated in water and extracted with ethyl acetate, dried and concentrated under reduced pressure. The crude mixture was purified by flash chromatography on silica (eluent 20 to 100% ethyl acetate in heptane) to yield 0.074 g (61%) of N-(2-(5-chloro-1H-indol-3-yl)ethyl)-5-((2,5-difluorophenyl)(hydroxy)methyl)isoxazole-3-carboxamide as a white solid.

1. customto the reaction
2. waitthe resulting mixture was left
3. stirringstirring overnight
4. extractionextracted with ethyl acetate
5. customdried
6. concentrationconcentrated under reduced pressure
7. customThe crude mixture was purified by flash chromatography on silica (eluent 20 to 100% ethyl acetate in heptane)