Sodium Hydroxide → 8-Difluoromethoxy-5-quinolinecarboxylic acid

Participants

Reaction Conditions

Reaction Steps

0.7 g (2.8 mmol) of methyl 8-difluoromethoxy-5-quinolinecarboxylate was suspended in 15 ml of water and 0.4 g (10 mmol) of sodium hydroxide was added. The mixture was stirred at 25° C. for 20 hours and then filtered off, and the filtrate was washed with methyl tert-butyl ether. The aqueous phase was adjusted to pH 3 using concentrated hydrochloric acid and filtered off, and the residue was dried. This gave 0.45 g of a colorless powder;

Provenance & Evidence