Hydrochloric Acid → 5-Bromo-6-chloropicolinic acid

Participants

Reaction Steps

To a solution of methyl 5-bromo-4-chloropicolinate (1.08 g) in THF (25 mL) and methanol (12.5 mL) was added 1N aqueous sodium hydroxide solution (25 mL), and the mixture was stirred at room temperature for 30 min. 1N Hydrochloric acid was added to the reaction mixture at 0° C., and the mixture was extracted with ethyl acetate. The extract was washed with water and saturated brine, and dried over anhydrous magnesium sulfate. The solvent was evaporated under reduced pressure to give a crude product of the title compound (944 mg) as a pale-yellow solid. This compound was used for the next step without further purification.

Provenance & Evidence