4-溴-2-氟-5-甲基苯甲腈

反应条件: temp:0.00; pressure:0.00; stir:

反应条件: temp:0.00; pressure:0.00; stir:

反应条件: temp:80.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

实验步骤: To a solution of 4-bromo-2-fluoro-5-methylbenzonitrile (40 g, 190 mmol) in a mixture of sulfuric acid (98%) and TFA (v/v=4:1, 480 mL) was stirred at 80° C. for 16 h. After the mixture was cooled to room temperature, the resulting mixture was poured into ice-cold water. The resulting precipitate was collected by filtration, washed with water and dried under reduced pressure to give the title compound (41 g, 95% yield) as a white solid. MS (ESI) m/z 232.0 [M+1]+. After the mixture was cooled to room temperature the resulting mixture was poured into ice-cold water The resulting precipitate was collected by filtration washed with water dried under reduced pressure

反应条件: temp:80.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

实验步骤: To a solution of 4-bromo-2-fluoro-5-methylbenzonitrile (40 g, 190 mmol) in a mixture of sulfuric acid (98%) and TFA (v/v=4:1, 480 mL) was stirred at 80° C. for 16 h. After the mixture was cooled to room temperature, the resulting mixture was poured into ice-cold water. The resulting precipitate was collected by filtration, washed with water and dried under reduced pressure to give the title compound (41 g, 95% yield) as a white solid. MS (ESI) m/z 232.0 [M+1]+. After the mixture was cooled to room temperature the resulting mixture was poured into ice-cold water The resulting precipitate was collected by filtration washed with water dried under reduced pressure

反应条件: temp:80.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

实验步骤: To a solution of 4-bromo-2-fluoro-5-methylbenzonitrile (40 g, 190 mmol) in a mixture of sulfuric acid (98%) and TFA (v/v=4:1, 480 mL) was stirred at 80° C. for 16 h. After the mixture was cooled to room temperature, the resulting mixture was poured into ice-cold water. The resulting precipitate was collected by filtration, washed with water and dried under reduced pressure to give the title compound (41 g, 95% yield) as a white solid. MS (ESI) m/z 232.0 [M+1]+. After the mixture was cooled to room temperature the resulting mixture was poured into ice-cold water The resulting precipitate was collected by filtration washed with water dried under reduced pressure

反应条件: temp:170.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

实验步骤: Combined 4-bromo-2-fluoro-5-methylbenzonitrile (4 g, 18.69 mmol) and dimethyl malonate (29.9 mL, 262 mmol) and purged with nitrogen. Potassium carbonate (3.87 g, 28.0 mmol), potassium hydrogencarbonate (2.81 g, 28.0 mmol), tri-tert-butylphosphonium tetrafluoroborate (0.119 g, 0.411 mmol), and bis(dibenzylidineacetone)palladium(0) (0.118 g, 0.206 mmol) were added. The reaction mixture was then heated in an oil bath at 170° C. After 3 hours, the reaction mixture was cooled, diluted with ethyl acetate, and filtered through Celite®. The filtrate was concentrated and the residue dissolved in EtOAc. The organic solution was washed with 1N aqueous sodium hydroxide (2×), twice with 10% aqueous sodium chloride, and then brine. The organic phase was dried over sodium sulfate, filtered, and concentrated in vacuo to give a residue which was purified by flash chromatography to give the title compound (1.67 g, 43%) as a clear colorless oil. 1H NMR (400 MHz, CHLOROFORM-d) δ ppm 2.30 (s, 3 H) 3.67 (s, 2 H) 3.72 (s, 3 H) 7.10 (d, J=9.60 Hz, 1 H) 7.42 (d, J=6.32 Hz, 1 H). the reaction mixture was cooled filtered through Celite® The filtrate was concentrated the residue dissolved in EtOAc The organic solution was washed with 1N aqueous sodium hydroxide (2×), twice with 10% aqueous sodium chloride The organic phase was dried over sodium sulfate filtered concentrated in vacuo to give a residue which was purified by flash chromatography

反应条件: temp:170.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

实验步骤: Combined 4-bromo-2-fluoro-5-methylbenzonitrile (4 g, 18.69 mmol) and dimethyl malonate (29.9 mL, 262 mmol) and purged with nitrogen. Potassium carbonate (3.87 g, 28.0 mmol), potassium hydrogencarbonate (2.81 g, 28.0 mmol), tri-tert-butylphosphonium tetrafluoroborate (0.119 g, 0.411 mmol), and bis(dibenzylidineacetone)palladium(0) (0.118 g, 0.206 mmol) were added. The reaction mixture was then heated in an oil bath at 170° C. After 3 hours, the reaction mixture was cooled, diluted with ethyl acetate, and filtered through Celite®. The filtrate was concentrated and the residue dissolved in EtOAc. The organic solution was washed with 1N aqueous sodium hydroxide (2×), twice with 10% aqueous sodium chloride, and then brine. The organic phase was dried over sodium sulfate, filtered, and concentrated in vacuo to give a residue which was purified by flash chromatography to give the title compound (1.67 g, 43%) as a clear colorless oil. 1H NMR (400 MHz, CHLOROFORM-d) δ ppm 2.30 (s, 3 H) 3.67 (s, 2 H) 3.72 (s, 3 H) 7.10 (d, J=9.60 Hz, 1 H) 7.42 (d, J=6.32 Hz, 1 H). the reaction mixture was cooled filtered through Celite® The filtrate was concentrated the residue dissolved in EtOAc The organic solution was washed with 1N aqueous sodium hydroxide (2×), twice with 10% aqueous sodium chloride The organic phase was dried over sodium sulfate filtered concentrated in vacuo to give a residue which was purified by flash chromatography

反应条件: temp:170.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

实验步骤: Combined 4-bromo-2-fluoro-5-methylbenzonitrile (4 g, 18.69 mmol) and dimethyl malonate (29.9 mL, 262 mmol). While purging the mixture with nitrogen, added potassium carbonate (3.87 g, 28.0 mmol), potassium hydrogencarbonate (2.81 g, 28.0 mmol), tri-tert-butylphosphonium tetrafluoroborate (0.119 g, 0.411 mmol), and bis(dibenzylidineacetone)palladium (0) (0.118 g, 0.206 mmol). The reaction mixture was heated in an oil bath at 170° C. for 3 hours, then cooled, diluted with ethyl acetate, and filtered through Celite®. The filtrate was concentrated and the residue dissolved in EtOAc, extracted with 1M aqueous sodium hydroxide (2×), twice with 10% aqueous sodium chloride, and brine. The organic phase was dried over sodium sulfate, filtered, and concentrated in vacuo, then purified by flash chromatography to give the title compound (1.67 g, 43%) as a clear colorless oil. 1H NMR (400 MHz, CHLOROFORM-d) δ ppm 2.30 (s, 3 H) 3.67 (s, 2 H) 3.72 (s, 3 H) 7.10 (d, J=9.60 Hz, 1 H) 7.42 (d, J=6.32 Hz, 1 H). While purging the mixture with nitrogen cooled filtered through Celite® The filtrate was concentrated the residue dissolved in EtOAc extracted with 1M aqueous sodium hydroxide (2×), twice with 10% aqueous sodium chloride, and brine The organic phase was dried over sodium sulfate filtered concentrated in vacuo purified by flash chromatography

反应条件: temp:170.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

实验步骤: Combined 4-bromo-2-fluoro-5-methylbenzonitrile (4 g, 18.69 mmol) and dimethyl malonate (29.9 mL, 262 mmol). While purging the mixture with nitrogen, added potassium carbonate (3.87 g, 28.0 mmol), potassium hydrogencarbonate (2.81 g, 28.0 mmol), tri-tert-butylphosphonium tetrafluoroborate (0.119 g, 0.411 mmol), and bis(dibenzylidineacetone)palladium (0) (0.118 g, 0.206 mmol). The reaction mixture was heated in an oil bath at 170° C. for 3 hours, then cooled, diluted with ethyl acetate, and filtered through Celite®. The filtrate was concentrated and the residue dissolved in EtOAc, extracted with 1M aqueous sodium hydroxide (2×), twice with 10% aqueous sodium chloride, and brine. The organic phase was dried over sodium sulfate, filtered, and concentrated in vacuo, then purified by flash chromatography to give the title compound (1.67 g, 43%) as a clear colorless oil. 1H NMR (400 MHz, CHLOROFORM-d) δ ppm 2.30 (s, 3 H) 3.67 (s, 2 H) 3.72 (s, 3 H) 7.10 (d, J=9.60 Hz, 1 H) 7.42 (d, J=6.32 Hz, 1 H). While purging the mixture with nitrogen cooled filtered through Celite® The filtrate was concentrated the residue dissolved in EtOAc extracted with 1M aqueous sodium hydroxide (2×), twice with 10% aqueous sodium chloride, and brine The organic phase was dried over sodium sulfate filtered concentrated in vacuo purified by flash chromatography

反应条件: temp:170.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

实验步骤: Combined 4-bromo-2-fluoro-5-methylbenzonitrile (4 g, 18.69 mmol) and dimethyl malonate (29.9 mL, 262 mmol) and purged with nitrogen. Potassium carbonate (3.87 g, 28.0 mmol), potassium hydrogencarbonate (2.81 g, 28.0 mmol), tri-tert-butylphosphonium tetrafluoroborate (0.119 g, 0.411 mmol), and bis(dibenzylidineacetone)palladium(0) (0.118 g, 0.206 mmol) were added. The reaction mixture was then heated in an oil bath at 170° C. After 3 hours, the reaction mixture was cooled, diluted with ethyl acetate, and filtered through Celite®. The filtrate was concentrated and the residue dissolved in EtOAc. The organic solution was washed with 1N aqueous sodium hydroxide (2×), twice with 10% aqueous sodium chloride, and then brine. The organic phase was dried over sodium sulfate, filtered, and concentrated in vacuo to give a residue which was purified by flash chromatography to give the title compound (1.67 g, 43%) as a clear colorless oil. 1H NMR (400 MHz, CHLOROFORM-d) δ ppm 2.30 (s, 3H) 3.67 (s, 2H) 3.72 (s, 3H) 7.10 (d, J=9.60 Hz, 1H) 7.42 (d, J=6.32 Hz, 1H). the reaction mixture was cooled filtered through Celite® The filtrate was concentrated the residue dissolved in EtOAc The organic solution was washed with 1N aqueous sodium hydroxide (2×), twice with 10% aqueous sodium chloride The organic phase was dried over sodium sulfate filtered concentrated in vacuo to give a residue which was purified by flash chromatography

反应条件: temp:0.00; pressure:0.00; stir:

反应条件: temp:0.00; pressure:0.00; stir: