Hydrochloric Acid → HCID 118598586, compound

Participants

Reaction Steps

To a solution of methyl 4-fluoropicolinate (2, 1 g, 6.45 mmol) in dichloromethane (30 mL) is added urea hydrogen peroxide (1.27 g, 13.54 mmol) and trifluoroacetic anhydride (1.79 mL, 12.9 mmol). The reaction is stirred at room temperature for 2 h. The resulting mixture is pour into 0.5 M hydrochloric acid and extracted with dichloromethane. The organic layer is washed with saturated aqueous sodium bicarbonate solution, dried over magnesium sulfate, filtered and concentrated. The crude is purified via flash chromatography to afford methyl 4-fluoro-2-(methoxycarbonyl)pyridine 1-oxide (3).

Provenance & Evidence