2-Bromo-4-chlorobenzoic acid → (2-Bromo-4-chlorophenyl)methanol

Beteiligte Stoffe

Reaktionsschritte

Add borane-THF (1 M in THF, 3.2 mL) complex dropwise to an ice-cooled solution of 2-bromo-4-chlorobenzoic acid (500 mg, 2.1 mmol) in THF (2 mL). Remove the cooling bath and stir overnight. Slowly add water (1 mL) and solid sodium carbonate. Stir 1 h. Filter and wash solids with THF. Chromatograph on silica gel, eluting with 0:100 to 30:70 ethyl acetate:dichloromethane to give 2-bromo-4-chlorobenzyl alcohol as a white solid (378 mg, 80%).

Herkunft & Nachweise