反应详情

温度

80 °C

A 1.5 mL reaction vial was charged with (S)-1-(6-bromo-5-cyclopropoxy-2-methyl-3,4-dihydroquinolin-1(2H)-yl)ethanone (0.019 g, 0.06 mmol) and 1,4-dioxane (50 μL). 1-cyclopropyl-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-pyrazole (0.2 M solution in 1,4-dioxane, 540 μL, 0.108 mmol) and potassium carbonate (1 M solution in water, 180 μL, 0.18 mmol) were added, and the reaction mixture was purged with nitrogen. [1,1′-Bis(diphenylphosphino)ferrocene]dichloropalladium(II) dichloromethane adduct (0.02 M solution in 1,2-dichloroethane, 300 μL, 0.006 mmol) was added, and the reaction was purged with nitrogen and heated to 80° C. on a heater shaker overnight. The reaction was diluted with ethyl acetate and washed with 1 N aqueous sodium hydroxide solution. The aqueous layer was separated and washed with ethyl acetate, and the combined organic layers were concentrated under a stream of nitrogen. The crude product was purified by mass triggered preparatory HPLC. The product-containing fractions were combined and concentrated in a Genevac to afford (S)-1-(5-cyclopropoxy-6-(1-cyclopropyl-1H-pyrazol-4-yl)-2-methyl-3,4-dihydroquinolin-1 (2H)-yl)ethanone (0.0039 g, 19%). MS (ESI, pos. ion) m/z 352 [M+H]+.

1. customA 1.5 mL reaction
2. customthe reaction mixture was purged with nitrogen
3. customthe reaction was purged with nitrogen
4. additionThe reaction was diluted with ethyl acetate
5. washwashed with 1 N aqueous sodium hydroxide solution
6. customThe aqueous layer was separated
7. washwashed with ethyl acetate
8. concentrationthe combined organic layers were concentrated under a stream of nitrogen
9. customThe crude product was purified by mass
10. concentrationconcentrated in a Genevac