5-Bromo-3-pyridinecarboxaldehyde → (5-Bromo-3-pyridinyl)methanol

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Reaction Steps

To a solution of 5-bromonicotinaldehyde (XLVII) (2.0 g, 10.8 mmol, 1 eq) in MeOH (20 mL) was added NaBH4 (2.4 g, 64.9 mmol, 6 eq) and the reaction mixture was stirred at room temperature for 3 h. The mixture was concentrated in vacuo and the residue was diluted in water (15 mL), the aqueous phase was extracted with DCM (10 mL×3). The combined organic layers were dried over MgSO4, filtered and concentrated in vacuo to afford (5-bromopyridin-3-yl)methanol (LVI) (1.8 g, 9.57 mmol, 90.0% yield) as a colorless oil. 1H NMR (CDCl3, 500 MHz) δ ppm 4.73 (s, 2H), 7.90 (s, 1H), 8.47 (s, 1H), 8.57 (s, 1H). ESIMS found for C6H6BrNO m/z 188 (M+H).

Provenance & Evidence