反应详情

温度

100 °C

Under an argon atmosphere, an optically active form (0.100 g) of 2-chloro-9-hydroxy-9-trifluoromethyl-9H-fluorene-4-carboxylic acid, 1-ethyl-4-(4,4,5,5-tetramethyl-[1,3,2]dioxaborolan-2-yl)-1H-pyrazole (0.133 g), tripotassium phosphate (0.191 g), palladium(II) acetate (0.0034 g), 2-dicyclohexylphosphino-2′,6′-dimethoxybiphenyl (0.0123 g), dioxane (3 ml) and water (0.6 ml) were mixed, and the mixture was stirred at 100° C. for 1 hr. The reaction mixture was cooled to room temperature, hydrochloric acid and ethyl acetate were added, and the mixture was partitioned in a separatory funnel. The organic layer was washed twice with water and once with saturated brine, dried over anhydrous sodium sulfate, and filtered. The filtrate was concentrated under reduced pressure, and the obtained residue was treated with hexane/ethyl acetate mixed solution (hexane:ethyl acetate=1:2, 2 ml). This slurry was filtered, and the obtained solid was dried to give the title compound (0.075 g, 63%). 1H-NMR (DMSO-D6) δ: 13.60 (1H, s), 8.43 (1H, s), 8.18-8.15 (1H, m), 8.01 (1H, d, J=0.7 Hz), 8.00 (1H, d, J=1.6 Hz), 7.97-7.95 (1H, m), 7.70-7.66 (1H, m), 7.53-7.48 (1H, m), 7.45-7.40 (1H, m), 7.35 (1H, s), 4.17 (2H, q, J=7.3 Hz), 1.43 (3H, t, J=7.3 Hz).

1. temperatureThe reaction mixture was cooled to room temperature
2. customthe mixture was partitioned in a separatory funnel
3. washThe organic layer was washed twice with water and once with saturated brine
4. dry with materialdried over anhydrous sodium sulfate
5. filtrationfiltered
6. concentrationThe filtrate was concentrated under reduced pressure
7. additionthe obtained residue was treated with hexane/ethyl acetate mixed solution (hexane:ethyl acetate=1:2, 2 ml)
8. filtrationThis slurry was filtered
9. customthe obtained solid was dried