反应详情

温度

80 °C

To a solution of (S)-3-(3-bromopyrazolo[1,5-a]pyrimidin-5-yl)-4-phenyloxazolidin-2-one (0.7 g, 1.9 mmol) in dioxane bubbled with nitrogen was added sodium carbonate (2.0 M, 4.9 mL, 9.7 mmol) and 3-(4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenyl)-1-((2-(trimethylsilyl)ethoxy)methyl)-1H-1,2,4-triazole (1.0 g, 2.5 mmol), and the reaction was degassed with nitrogen for 30 minutes. XPHOS (0.093 g, 0.19 mmol) and Pd2 dba3 (0.089 g, 0.097 mmol) were added to the mixture and the reaction was stirred for 2 hours at 80° C. The reaction was poured into water and the aqueous layer extracted with EtOAc. The organic layer was washed with brine, dried over MgSO4 and concentrated in vacuo. The crude material purified by normal phase chromatography using 25% EtOAc/DCM as the eluent to yield (S)-4-phenyl-3-(3-(4-(1-((2-(trimethylsilyl)ethoxy)methyl)-1H-1,2,4-triazol-3-yl)phenyl)pyrazolo[1,5-a]pyrimidin-5-yl)oxazolidin-2-one (0.80 g, 1.4 mmol, 74% yield).

1. customthe reaction was degassed with nitrogen for 30 minutes
2. extractionthe aqueous layer extracted with EtOAc
3. washThe organic layer was washed with brine
4. dry with materialdried over MgSO4
5. concentrationconcentrated in vacuo
6. customThe crude material purified by normal phase chromatography