反应详情

(R)-tert-Butyl 6-bromo-2-oxo-1-(1-phenylethyl)-1H-imidazo[4,5-b]pyridine-3(2H)-carboxylate. To a solution of tent-butyl 6-bromo-2-oxo-1H-imidazo[4,5-b]pyridine-3(2H)-carboxylate (1.6 g, 5.09 mmol), (S)-1-phenylethanol (0.75 g, 6.11 mmol) and triphenylphosphine (1.6 g, 6.11 mmol) in tetrahydrofuran (45 mL) was added diisopropyl azodicarboxylate (1.19 mL, 6.11 mmol). After stirring at room temperature for 1 h, the solvent was removed under reduced pressure. The crude product was purified by silica gel chromatography to afford the title compound (0.60 g, 28% yield). MS (ESI) m/z 418.2 [M+1]+.

1. customthe solvent was removed under reduced pressure
2. customThe crude product was purified by silica gel chromatography