Sodium Hydroxide → (6-Chloropyridin-2-yl)methanol

Beteiligte Stoffe

Reaktionsbedingungen

Reaktionsschritte

To a mixture of 2-chloro-6-methylpyridine (1.0 g, 7.84 mmol) and dichloromethane (20 mL) was added m-chloroperbenzoic acid (3.5 g, 13.2 mmol) on an ice bath, which was stirred for 1.5 hours at 40° C. Water and sodium hydrogencarbonate were added to the reaction mixture, which was then extracted with dichloromethane. The organic layer was separated, washed with water and saturated aqueous sodium chloride, dried over anhydrous magnesium sulfate, and filtered. The filtrate was concentrated under a reduced pressure. Acetic anhydride (20 mL) was added to the resulting residue and stirred for 1 hour at 100° C. The reaction mixture was cooled to room temperature and concentrated under a reduced pressure. A 5 N aqueous sodium hydroxide solution (4 mL, 20.1 mmol) was added to a mixture of the resulting residue and methanol (20 mL) on an ice bath, which was stirred for 30 minutes. Water was added to this mixture, which was then extracted with ethyl acetate. The organic layer was separated, washed with water and saturated aqueous sodium chloride, dried over anhydrous magnesium sulfate, and filtered. The filtrate was concentrated under a reduced pressure, and the residue was purified by NH silica gel column chromatography (heptane:ethyl acetate=3:1) to obtain the title compound (200.0 mg, 18%).

Herkunft & Nachweise