反应详情

N-(2-(5-chloro-1H-indol-3-yl)ethyl)-5-(2,5-difluorobenzyl)isoxazole-3-carboxamide (0.0641 g; 0.154 mmol) was added to a solution of tetrabutylammonium fluoride in THF (1 M, 0.462 mL). The resulting mixture was stirred at room temperature overnight. As the reaction was not completed, tetrabutylammonium fluoride in THF (1 M, 2 mL) were added, the reaction mixture was stirred for four hours and concentrated under reduced pressure. The crude mixture was purified by flash chromatography on silica (eluent 1 to 20% methanol in dichloromethane) and by preparative HPLC method 2 to yield 0.013 g (19%) of N-(2-(5-chloro-1H-indol-3-yl)ethyl)-5-(2,5-difluorobenzoyl)isoxazole-3-carboxamide as a yellow solid.

1. stirringthe reaction mixture was stirred for four hours
2. concentrationconcentrated under reduced pressure
3. customThe crude mixture was purified by flash chromatography on silica (eluent 1 to 20% methanol in dichloromethane) and by preparative HPLC method 2