methyl 2-bromo-4-fluorobenzoate

反応条件: temp:0.00; pressure:0.00; stir:

反応条件: temp:0.00; pressure:0.00; stir:

反応条件: temp:0.00; pressure:0.00; stir:

反応条件: temp:0.00; pressure:0.00; stir:

反応条件: temp:0.00; pressure:0.00; stir:

反応条件: temp:0.00; pressure:0.00; stir:

反応条件: temp:0.00; pressure:0.00; stir:

反応条件: temp:120.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

実験手順: A mixture of methyl 2-bromo-4-fluorobenzoate (1.5 g), pyridine-4-boronic acid (0.95 g), sodium carbonate (1.0 g), tetrakis(triphenylphosphine)palladium(0) (0.22 g), water (1.5 mL) and DME (9.0 mL) was stirred at 120° C. for 1 hr under microwave irradiation. The reaction mixture was diluted with water, and the mixture was extracted with ethyl acetate. The extract was washed with water and saturated brine, and dried over anhydrous magnesium sulfate, and the solvent was evaporated under reduced pressure. The residue was purified by silica gel column chromatography (ethyl acetate/hexane) to give the title compound (0.89 g). the mixture was extracted with ethyl acetate The extract was washed with water and saturated brine dried over anhydrous magnesium sulfate the solvent was evaporated under reduced pressure The residue was purified by silica gel column chromatography (ethyl acetate/hexane)

反応条件: temp:100.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

実験手順: To 2-bromo-4-fluoro-1-nitrobenzene (185.16 mg, 0.842 mmol) was added Pd2 dba3 (23.12 mg, 0.025 mmol) and copper powder (271 mg, 4.26 mmol). Dimethylsulfoxide (2.3 ml) and methyl 2-bromo-4-fluorobenzoate (0.122 ml, 0.842 mmol) were added and the mixture was stirred vigorously at 100° C. for 2 h. The mixture was cooled to room temperature, diluted with ethyl acetate (20 ml), and filtered. The filtrate was washed with water and dried (anhydrous Na2SO4) and concentrated to give a yellow oil (279.8 mg). This oil was utilized without purification for the preparation of Example 38b. The mixture was cooled to room temperature filtered The filtrate was washed with water dried (anhydrous Na2SO4) concentrated

反応条件: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

実験手順: 2-Bromo-4-fluorophenol (28 g) was added to a solution of sodium hydroxide (7 g) in water (100 ml), and methyl chloroformate was dropwise added thereto at a temperature of below 10° C. Precipitated crystals were collected by filtration and washed with water to give methyl (2-bromo-4-fluorophenyl)formate (41 g). M.P., 80.7° C. was dropwise added at a temperature of below 10° C Precipitated crystals were collected by filtration washed with water

反応条件: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

実験手順: 2-Bromo-4-fluorophenol (28 g) was added to a solution of sodium hydroxide (7 g) in water (100 ml), and methyl chloroformate was dropwise added thereto at a temperature of below 10° C. Precipitated crystals were collected by filtration and washed with water to give methyl (2-bromo-4-fluorophenyl)formate (41 g). M.P., 80.7° C. was dropwise added at a temperature of below 10° C Precipitated crystals were collected by filtration washed with water

反応条件: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

実験手順: This example was prepared by substituting piperazine for EXAMPLE 1B and methyl 2-bromo-4-fluorobenzoate for EXAMPLE 1C in EXAMPLE 1D.