2-甲氧基-4-溴-5-氟苯胺

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

实验步骤: Sodium hydrosulfite (14.7 g, 84.4 mmol) was added to a solution of 1-bromo-2-fluoro-5-methoxy-4-nitrobenzene (9.28 g, 37.12 mmol) in ethanol (180 mL) and water (130 mL) at 80° C. in three portions. After 5 hours the organic solvent was removed and the solid in aqueous layer was collected by filtration. The solid was further washed with heptane/ethyl acetate (3:2, 400 mL). The filtrate was evaporated to give 4-bromo-5-fluoro-2-methoxyaniline (3.29 g, 40%). 1H NMR (DMSO-d6) δ 3.75 (s, 3H), 5.22 (s, 2H), 6.56 (d, J=10.68 Hz, 2H), 6.94 (d, J=6.57 Hz, 2H). After 5 hours the organic solvent was removed the solid in aqueous layer was collected by filtration The solid was further washed with heptane/ethyl acetate (3:2, 400 mL) The filtrate was evaporated

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

实验步骤: Sodium hydrosulfite (14.7 g, 84.4 mmol) was added to a solution of 1-bromo-2-fluoro-5-methoxy-4-nitrobenzene (9.28 g, 37.12 mmol) in ethanol (180 mL) and water (130 mL) at 80° C. in three portions. After 5 hours the organic solvent was removed and the solid in aqueous layer was collected by filtration. The solid was further washed with heptane/ethyl acetate (3:2, 400 mL). The filtrate was evaporated to give 4-bromo-5-fluoro-2-methoxyaniline (3.29 g, 40%). 1H NMR (DMSO-d6) δ 3.75 (s, 3H), 5.22 (s, 2H), 6.56 (d, J=10.68 Hz, 2H), 6.94 (d, J=6.57 Hz, 2H). After 5 hours the organic solvent was removed the solid in aqueous layer was collected by filtration The solid was further washed with heptane/ethyl acetate (3:2, 400 mL) The filtrate was evaporated

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

实验步骤: Sodium hydrosulfite (14.7 g, 84.4 mmol) was added to a solution of 1-bromo-2-fluoro-5-methoxy-4-nitrobenzene (9.28 g, 37.12 mmol) in ethanol (180 mL) and water (130 mL) at 80° C. in three portions. After 5 hours the organic solvent was removed and the solid in aqueous layer was collected by filtration. The solid was further washed with heptane/ethyl acetate (3:2, 400 mL). The filtrate was evaporated to give 4-bromo-5-fluoro-2-methoxyaniline (3.29 g, 40%). 1H NMR (DMSO-d6) δ 3.75 (s, 3H), 5.22 (s, 2H), 6.56 (d, J=10.68 Hz, 2H), 6.94 (d, J=6.57 Hz, 2H). After 5 hours the organic solvent was removed the solid in aqueous layer was collected by filtration The solid was further washed with heptane/ethyl acetate (3:2, 400 mL) The filtrate was evaporated

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

实验步骤: Sodium hydrosulfite (14.7 g, 84.4 mmol) was added to a solution of 1-bromo-2-fluoro-5-methoxy-4-nitrobenzene (9.28 g, 37.12 mmol) in ethanol (180 mL) and water (130 mL) at 80° C. in three portions. After 5 hours the organic solvent was removed and the solid in aqueous layer was collected by filtration. The solid was further washed with heptane/ethyl acetate (3:2, 400 mL). The filtrate was evaporated to give 4-bromo-5-fluoro-2-methoxyaniline (3.29 g, 40%). 1H NMR (DMSO-d6) δ 3.75 (s, 3H), 5.22 (s, 2H), 6.56 (d, J=10.68 Hz, 2H), 6.94 (d, J=6.57 Hz, 2H). After 5 hours the organic solvent was removed the solid in aqueous layer was collected by filtration The solid was further washed with heptane/ethyl acetate (3:2, 400 mL) The filtrate was evaporated

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

实验步骤: Sodium hydrosulfite (14.7 g, 84.4 mmol) was added to a solution of 1-bromo-2-fluoro-5-methoxy-4-nitrobenzene (9.28 g, 37.12 mmol) in ethanol (180 mL) and water (130 mL) at 80° C. in three portions. After 5 hours the organic solvent was removed and the solid in aqueous layer was collected by filtration. The solid was further washed with heptane/ethyl acetate (3:2, 400 mL). The filtrate was evaporated to give 4-bromo-5-fluoro-2-methoxyaniline (3.29 g, 40%). 1H NMR (DMSO-d6) δ 3.75 (s, 3H), 5.22 (s, 2H), 6.56 (d, J=10.68 Hz, 2H), 6.94 (d, J=6.57 Hz, 2H). After 5 hours the organic solvent was removed the solid in aqueous layer was collected by filtration The solid was further washed with heptane/ethyl acetate (3:2, 400 mL) The filtrate was evaporated

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

实验步骤: Sodium hydrosulfite (14.7 g, 84.4 mmol) was added to a solution of 1-bromo-2-fluoro-5-methoxy-4-nitrobenzene (9.28 g, 37.12 mmol) in ethanol (180 mL) and water (130 mL) at 80° C. in three portions. After 5 hours the organic solvent was removed and the solid in aqueous layer was collected by filtration. The solid was further washed with heptane/ethyl acetate (3:2, 400 mL). The filtrate was evaporated to give 4-bromo-5-fluoro-2-methoxyaniline (3.29 g, 40%). 1H NMR (DMSO-d6) δ 3.75 (s, 3H), 5.22 (s, 2H), 6.56 (d, J=10.68 Hz, 2H), 6.94 (d, J=6.57 Hz, 2H). After 5 hours the organic solvent was removed the solid in aqueous layer was collected by filtration The solid was further washed with heptane/ethyl acetate (3:2, 400 mL) The filtrate was evaporated

反应条件: temp:100.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

实验步骤: To a pressure tube was added 4-bromo-5-fluoro-2-methoxyaniline (0.24 g, 1.1 mmol), zinc cyanide (0.10 g, 0.87 mmol), Pd2(dba)3 (100 mg, 0.11 mmol), DavePhos (86 mg, 0.22 mmol) and DMF (3 mL). The reaction was sealed and stirred at 100° C. for 6 hours. The reaction was diluted with water and extracted with EtOAc. The combined organic extracts were washed with brine, dried over sodium sulfate, filtered and concentrated. The crude product was purified by flash chromatography to give 4-amino-2-fluoro-5-methoxybenzonitrile (0.18 g, 77%). The reaction was sealed extracted with EtOAc The combined organic extracts were washed with brine dried over sodium sulfate filtered concentrated The crude product was purified by flash chromatography

反应条件: temp:100.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

实验步骤: To a pressure tube was added 4-bromo-5-fluoro-2-methoxyaniline (0.24 g, 1.1 mmol), zinc cyanide (0.10 g, 0.87 mmol), Pd2(dba)3 (100 mg, 0.11 mmol), DavePhos (86 mg, 0.22 mmol) and DMF (3 mL). The reaction was sealed and stirred at 100° C. for 6 hours. The reaction was diluted with water and extracted with EtOAc. The combined organic extracts were washed with brine, dried over sodium sulfate, filtered and concentrated. The crude product was purified by flash chromatography to give 4-amino-2-fluoro-5-methoxybenzonitrile (0.18 g, 77%). The reaction was sealed extracted with EtOAc The combined organic extracts were washed with brine dried over sodium sulfate filtered concentrated The crude product was purified by flash chromatography

反应条件: temp:100.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

实验步骤: To a pressure tube was added 4-bromo-5-fluoro-2-methoxyaniline (0.24 g, 1.1 mmol), zinc cyanide (0.10 g, 0.87 mmol), Pd2(dba)3 (100 mg, 0.11 mmol), DavePhos (86 mg, 0.22 mmol) and DMF (3 mL). The reaction was sealed and stirred at 100° C. for 6 hours. The reaction was diluted with water and extracted with EtOAc. The combined organic extracts were washed with brine, dried over sodium sulfate, filtered and concentrated. The crude product was purified by flash chromatography to give 4-amino-2-fluoro-5-methoxybenzonitrile (0.18 g, 77%). The reaction was sealed extracted with EtOAc The combined organic extracts were washed with brine dried over sodium sulfate filtered concentrated The crude product was purified by flash chromatography

反应条件: temp:75.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

实验步骤: To a solution of 1-bromo-2-fluoro-5-methoxy-4-nitrobenzene (0.998 g, 3.99 mmol) in isopropanol (20 mL) was added iron (0.7 g, 12 mmol), ammonium chloride (0.64 g, 12 mmol) and water (2 mL). The reaction was stirred at 75° C. for 2 hours, then filtered and concentrated. The residue was diluted with water and extracted with EtOAc. The combined organic extracts were washed with brine, dried over sodium sulfate, filtered and concentrated to give 4-bromo-5-fluoro-2-methoxyaniline (0.82 g, 93%). filtered concentrated The residue was diluted with water extracted with EtOAc The combined organic extracts were washed with brine dried over sodium sulfate filtered concentrated

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

实验步骤: To a THF (20 mL) solution of 5-fluoro-2-methoxyaniline (1.76 g), a THF (30 mL) solution of pyridinium bromide perbromide (4.36 g) was added dropwise under ice-cooling, and the reaction solution was agitated for 30 minutes at room temperature. The solid which deposited from the reaction mixture was separated by filtering and the solid was washed by THF. After the obtained solid was dissolved with water and ethyl acetate, the aqueous layer was neutralized with a saturated sodium bicarbonate water, and the organic layer was partitioned. After the obtained organic layer was washed with a saturated saline solution, it was dried over anhydrous magnesium sulfate and concentrated under reduced pressure. The residue was purified by silica gel chromatography (elution solvent: hexane-ethyl acetate system), and 1.83 mg of the title compound was obtained. cooling was separated by filtering the solid was washed by THF After the obtained solid was dissolved with water and ethyl acetate the organic layer was partitioned After the obtained organic layer was washed with a saturated saline solution, it was dried over anhydrous magnesium sulfate concentrated under reduced pressure The residue was purified by silica gel chromatography (elution solvent: hexane-ethyl acetate system)

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

实验步骤: To a THF (20 mL) solution of 5-fluoro-2-methoxyaniline (1.76 g), a THF (30 mL) solution of pyridinium bromide perbromide (4.36 g) was added dropwise under ice-cooling, and the reaction solution was agitated for 30 minutes at room temperature. The solid which deposited from the reaction mixture was separated by filtering and the solid was washed by THF. After the obtained solid was dissolved with water and ethyl acetate, the aqueous layer was neutralized with a saturated sodium bicarbonate water, and the organic layer was partitioned. After the obtained organic layer was washed with a saturated saline solution, it was dried over anhydrous magnesium sulfate and concentrated under reduced pressure. The residue was purified by silica gel chromatography (elution solvent:hexane-ethyl acetate system), and 1.83 mg of the title compound was obtained. cooling was separated by filtering the solid was washed by THF After the obtained solid was dissolved with water and ethyl acetate the organic layer was partitioned After the obtained organic layer was washed with a saturated saline solution, it was dried over anhydrous magnesium sulfate concentrated under reduced pressure The residue was purified by silica gel chromatography (elution solvent:hexane-ethyl acetate system)