2-bromo-6-fluorobenzaldehyde

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:0.00; pressure:0.00; stir:

反応条件: temp:0.00; pressure:0.00; stir:

反応条件: temp:-78.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

実験手順: A solution of EtMgBr (35 mL, 35 mmol) in TH-F (1 M) is added dropwise to a solution of 2-bromo-6-fluoro-benzaldehyde (7 g, 34.5 mmol) in THF at −78° C. The mixture is stirred for 1 hour at −78° C. Saturated NH4Cl is added dropwise to the mixture which is subsequently warmed to room temperature and stirred for 1 hour. The organic layer is separated, extracted with THF (3×100 mL. The combined organic layers are washed with brine, dried and solvent is removed in vacuo. The crude product is purified by flash chromatography (5% EtOAc/hexanes) to obtain 1-(2-bromo-6-fluoro-phenyl)-propan-1-ol. is subsequently warmed to room temperature stirred for 1 hour The organic layer is separated extracted with THF (3×100 mL The combined organic layers are washed with brine dried solvent is removed in vacuo The crude product is purified by flash chromatography (5% EtOAc/hexanes)

反応条件: temp:-78.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

実験手順: A solution of EtMgBr (35 mL, 35 mmol) in TH-F (1 M) is added dropwise to a solution of 2-bromo-6-fluoro-benzaldehyde (7 g, 34.5 mmol) in THF at −78° C. The mixture is stirred for 1 hour at −78° C. Saturated NH4Cl is added dropwise to the mixture which is subsequently warmed to room temperature and stirred for 1 hour. The organic layer is separated, extracted with THF (3×100 mL. The combined organic layers are washed with brine, dried and solvent is removed in vacuo. The crude product is purified by flash chromatography (5% EtOAc/hexanes) to obtain 1-(2-bromo-6-fluoro-phenyl)-propan-1-ol. is subsequently warmed to room temperature stirred for 1 hour The organic layer is separated extracted with THF (3×100 mL The combined organic layers are washed with brine dried solvent is removed in vacuo The crude product is purified by flash chromatography (5% EtOAc/hexanes)

反応条件: temp:0.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

実験手順: Isopropylmagnesium chloride (18 mL of 2 M in Et2O, 35 mmol) is added to a solution of 2-bromo-6-fluoro-benzaldehyde (6.0 g, 30 mmol) in THF (40 mL) at −78° C. and the mixture is stirred for 1 hour at 0° C. The mixture is poured into saturated NH4Cl and extracted with EtOAc. The resulting crude alcohol is oxidized directly by Swern oxidation to yield 1-(2-bromo-6-fluoro-phenyl)-2-methyl-propan-1-one. 1H NMR (CDCl3) 7.38 (d, 1H), 7.22 (m, 1H), 7.03 (t, 1H), 3.10 (m, 1H), 1.11 (d, 6H). extracted with EtOAc