4-bromo-2-fluoro-6-isopropylphenol

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

実験手順: To a solution of 4-bromo-6-fluoro-2-iso-propylanisole (0.92 g, 3.70 mmol) in CH2Cl2 (10.0 mL) at −78° C. was added BBr3 (5.5 mL, 5.5 mmol, 1.0 M in CH2Cl2). After 5 min, the reaction mixture was stirred at room temperature for 16 h, poured into ice (50 g) and extracted with ethyl acetate (20.0 mL). The organic layer was separated, dried over MgSO4 and filtered. The solvent was removed under reduced pressure to afford 4-bromo-6-fluoro-2-iso-propylphenol (0.90 g, 100%) as a dark oil, which was used for the next step without further purification: 1H NMR (300 MHz, CD3OD): δ 7.26 (d, J=10.5 Hz, 1H), 6.92 (d, J=10.5 Hz, 1H), 3.30 (m, 1H), 1.23 (d, J=6.6 Hz, 6H); TLC conditions: Uniplate silica gel, 250 microns; Mobile phase=ethyl acetate-hexanes (1:9); Rf=0.40. extracted with ethyl acetate (20.0 mL) The organic layer was separated dried over MgSO4 filtered The solvent was removed under reduced pressure

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

実験手順: To a solution of 4-bromo-6-fluoro-2-iso-propylanisole (0.92 g, 3.70 mmol) in CH2Cl2 (10.0 mL) at −78-C was added BBr3 (5.5 mL, 5.5 mmol, 1.0 M in CH2Cl2). After 5 min, the reaction mixture was stirred at room temperature for 16 h, poured into ice (50 g) and extracted with ethyl acetate (20.0 mL). The organic layer was separated, dried over MgSO4 and filtered. The solvent was removed under reduced pressure to afford 4-bromo-6-fluoro-2-iso-propylphenol (0.90 g, 100%) as a dark oil, which was used for the next step without flier purification: 1H NMR (300 MHz, CD3OD): δ 7.26 (d, J=10.5 Hz, 1 H), 6.92 (d, J=10.5 Hz, 1 H), 3.30 (m, 1 H), 1.23 (d, J=6.6 Hz, 6 H); TLC conditions: Uniplate silica gel, 250 microns; Mobile phase=ethyl acetate-hexanes (1:9); Rf=0.40. extracted with ethyl acetate (20.0 mL) The organic layer was separated dried over MgSO4 filtered The solvent was removed under reduced pressure