反应详情

Methyl 2-fluoro-6-hydroxy-4-(methylsulfonyl)benzoate (0.14 g, 0.57 mmol) was dissolved in THF (dry) (5 ml). LiBH4 (2M in THF) (0.57 ml, 1.14 mmol) was added dropwise under nitrogen at 0° C. The mixture was allowed to warm to RT and stirred under nitrogen for 45 min. EtOAc was added and the mixture was further quenched with MeOH, then water. The mixture was acidified with 1N HCl and extracted with EtOAc. The combined extracts were washed with brine, dried (Na2SO4) and concentrated to give the crude title compound (0.12 g) 1H-NMR (400 MHz, CD3OD): δ 7.20 (1H, s), 7.16 (1H, dd, J 8.4, 2), δ 4.73 (2H, d, J 1.6), δ 3.10 (3H, s) ppm (J-values are in Hz and shifts relative to solvent-peak at 3.31 ppm).

1. customthe mixture was further quenched with MeOH
2. extractionextracted with EtOAc
3. washThe combined extracts were washed with brine
4. dry with materialdried (Na2SO4)
5. concentrationconcentrated