Methanol → (4-Bromo-3-fluorophenyl)methanol

To a solution of 4-bromo-3-fluorobenzaldehyde (10 g, 49.3 mmol) and NaBH4 (3.73 g, 99 mmol) in THF (100 mL) was added MeOH (100 mL) dropwise at 20° C. After LCMS analysis showed the starting material had disappeared, the solvent was removed in vacuo. The residue was dissolved in DCM (200 mL) and washed with H2O (60 mL) and brine (60 mL). The organic layer was dried over Na2SO4, filtered and concentrated to yield a white solid of (4-bromo-3-fluorophenyl)methanol (9.8 g, 47.7 mmol, 97.0% yield): 1H NMR (400 MHz, CD3OD) δ 7.54 (t, J=7.8 Hz, 1H), 7.18 (d, J=9.6 Hz, 1H), 7.06 (d, J=7.2 Hz, 1H), 4.56 (s, 2H); ES-LCMS m/z 188.9 (M−17).

1. customthe solvent was removed in vacuo
2. dissolutionThe residue was dissolved in DCM (200 mL)
3. washwashed with H2O (60 mL) and brine (60 mL)
4. dry with materialThe organic layer was dried over Na2SO4
5. filtrationfiltered
6. concentrationconcentrated

ORD record

ord-bf47c4c0d43346e4b0d7a818316e37ba

Source dataset

uspto-grants-2016_07

DOI

10.6084/m9.figshare.5104873.v1

Patent number

US09382238B2