(5-fluoro-1-benzofuran-2-yl)methanol

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:0.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

実験手順: Compound 14 (150 mg, 0.90 mmol) was dissolved in toluene (10 mL) and the solution was cooled to 0° C. PBr3 (102 μL, 1.08 mmol) was added dropwise over 15 min. The reaction mixture was then brought up to room temperature and stirred for 1 h. The solvent was evaporated off in-vacuo. The residue was adsorbed on silica gel and purified by flash chromatography, eluting with hexane/EtOAc (4:1) to give 15 (150 mg, 72%) as an oil. 1H NMR (500 MHz, CDCl3): δ: 7.43 (1H, d, J=7.60 Hz, H-7), 7.21 (1H, t, J=8.10, H-4), 7.06 (1H, t, J=8.90, H-4), 6.75 (1H, s, H-3), 4.60 (2H, s, 2-CH2). 13C NMR CDEPT 135, (500 MHz, CDCl3): δ: 113.08 (C-7), 112.08 (C-6), 106.87 (C-4), 106.34 (C-3), 60.42 (CH2—Br). was then brought up to room temperature The solvent was evaporated off in-vacuo purified by flash chromatography eluting with hexane/EtOAc (4:1)

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

実験手順: Compound 13 (180 mg, 1.10 mmol) was dissolved in EtOH (12 mL). NaBH4 (45 mg, 1.21 mmol) was added portionwise at 0° C., with vigorous stirring. The suspension was stirred at 0° C. for 15 min and then at room temperature for 1.5 h. Solvents were evaporated off in-vacuo. The crude residue was taken up in EtOAc and washed with water, brine and dried (MgSO4). The solvent was evaporated off in vacuo. The residue was adsorbed on silica gel and purified by flash chromatography, eluting with hexane/EtOAc (3:1) to give 14 (150 mg, 91%) as a white solid. 1H NMR (500 MHz, CDCl3): δ: 7.36 (1H, d, J=8.35 Hz, H-7), 7.19 (1H, d, J=7.80, H-4), 7.00 (1H, t, J=8.75H-6), 6.60 (1H, s, H-3), 4.75 (2H, s, CH2). at room temperature for 1.5 h Solvents were evaporated off in-vacuo washed with water, brine dried (MgSO4) The solvent was evaporated off in vacuo purified by flash chromatography eluting with hexane/EtOAc (3:1)