1-(4-bromo-2-methylphenyl)-2,2,2-trifluoroethanol

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

実験手順: To a solution of 1-(4-bromo-2-methylphenyl)-2,2,2-trifluoroethanol (1.8 g, 6.7 mmol) in CH2Cl2 (20 mL) was added Dess-Martin Periodinane (3.4 g, 8.1 mmol) at 0° C. The mixture was stirred at RT for 2 h, then diluted with water (10 mL) and filtered. The filtrate was extracted with CH2Cl2. The combined organic layer was washed with brine, dried over Na2SO4 and concentrated in vacuo. Purification by normal phase silica gel column provided 1-(4-bromo-2-methylphenyl)-2,2,2-trifluoroethanone as a yellow oil. filtered The filtrate was extracted with CH2Cl2 The combined organic layer was washed with brine dried over Na2SO4 concentrated in vacuo Purification by normal phase silica gel column

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-2-methylbenzaldehyde (1.5 g, 7.5 mmol) in THF (20 mL) was added TMSCF3 (2.2 g, 15.5 mmol) at 0° C. and then TBAF (1.1 mL, 1.0 M in THF). The mixture was stirred at RT for 1 h, then diluted with HCl (3.0 M, 10 mL), stirred at RT for 1 h and extracted with ethyl acetate. The combined organic layer was washed with brine, dried over Na2SO4 and concentrated in vacuo. Purification by normal phase silica gel column provided 1-(4-bromo-2-methylphenyl)-2,2,2-trifluoroethanol as an off-white solid. stirred at RT for 1 h extracted with ethyl acetate The combined organic layer was washed with brine dried over Na2SO4 concentrated in vacuo Purification by normal phase silica gel column