3-(3-溴-4-氟苯基)-3-甲基丁-2-one

反应条件: temp:160.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

实验步骤: To a solution of 3-(3-bromo-4-fluorophenyl)-3-methylbutan-2-one (13 g, 50 mmol) in NMP (100 mL) was added CuCN (17.9 g, 200 mmol, 4 eq). The mixture was heated 24 h at 160° C. After cooling, the reaction was diluted with EtOAc, washed with 2N HCl (200 mL), satd NaHCO3 (200 mL) and brine (200 mL) successively, dried over MgSO4 and evaporated in vacuo. The residue was purified by column chromatography (Hex/EtOAc=4:1) to give 2-fluoro-5-(2-methyl-3-oxobutan-2-yl)benzonitrile (7.1 g, 69%). 1H NMR (400 MHz, CDCl3) δ 7.56-7.54 (m, 1H), 7.49-7.45 (m, 1H), 7.20 (t, J=8.4 Hz, 1H), 1.96 (s, 3H), 1.50 (s, 6H). After cooling washed with 2N HCl (200 mL), satd NaHCO3 (200 mL) and brine (200 mL) successively dried over MgSO4 evaporated in vacuo The residue was purified by column chromatography (Hex/EtOAc=4:1)

反应条件: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

实验步骤: To a stirred solution of 3-(3-bromo-4-fluorophenyl)-3-methylbutan-2-ol (18 g, 69 mmol) in DCM (300 mL) at 0° C. was added PCC (29.7 g, 2 eq) portionwise. After stirring 24 h at room temperature, the reaction mixture was combined with water and extracted with DCM. The combined extracts were dried over MgSO4 and evaporated in vacuo. The residue was purified by flash column chromatography (Hex/EtOAc=10:1) to give 3-(3-bromo-4-fluorophenyl)-3-methylbutan-2-one (13 g, 73%). 1H NMR (400 MHz, CDCl3) δ 7.47-7.45 (m, 1H), 7.17-7.14 (m, 1H), 7.09 (t, J=8.8 Hz, 1H), 1.98 (s, 3H), 1.45 (s, 6H). extracted with DCM The combined extracts were dried over MgSO4 evaporated in vacuo The residue was purified by flash column chromatography (Hex/EtOAc=10:1)

反应条件: temp:160.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

实验步骤: To a solution of 3-(3-bromo-4-fluorophenyl)-3-methylbutan-2-one (13 g, 50 mmol) in NMP (100 mL) was added CuCN (17.9 g, 200 mmol, 4 eq). The mixture was heated 24 h at 160° C. After cooling, the reaction was diluted with EtOAc, washed with 2N HCl (200 mL), satd NaHCO3 (200 mL) and brine (200 mL) successively, dried over MgSO4 and evaporated in vacuo. The residue was purified by column chromatography (Hex/EtOAc=4:1) to give 2-fluoro-5-(2-methyl-3-oxobutan-2-yl)benzonitrile (7.1 g, 69%). 1H NMR (400 MHz, CDCl3) δ 7.56-7.54 (m, 1H), 7.49-7.45 (m, 1H), 7.20 (t, J=8.4 Hz, 1H), 1.96 (s, 3H), 1.50 (s, 6H). After cooling washed with 2N HCl (200 mL), satd NaHCO3 (200 mL) and brine (200 mL) successively dried over MgSO4 evaporated in vacuo The residue was purified by column chromatography (Hex/EtOAc=4:1)

反应条件: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

实验步骤: To a stirred solution of 3-(3-bromo-4-fluorophenyl)-3-methylbutan-2-ol (18 g, 69 mmol) in DCM (300 mL) at 0° C. was added PCC (29.7 g, 2 eq) portionwise. After stirring 24 h at room temperature, the reaction mixture was combined with water and extracted with DCM. The combined extracts were dried over MgSO4 and evaporated in vacuo. The residue was purified by flash column chromatography (Hex/EtOAc=10:1) to give 3-(3-bromo-4-fluorophenyl)-3-methylbutan-2-one (13 g, 73%). 1H NMR (400 MHz, CDCl3) δ 7.47-7.45 (m, 1H), 7.17-7.14 (m, 1H), 7.09 (t, J=8.8 Hz, 1H), 1.98 (s, 3H), 1.45 (s, 6H). extracted with DCM The combined extracts were dried over MgSO4 evaporated in vacuo The residue was purified by flash column chromatography (Hex/EtOAc=10:1)