Hydrochloric Acid → 4-((5-Chloro-4-(methylamino)pyrimidin-2-yl)amino)-3-(difluoromethoxy)benzoic acid

Participants

Reaction Steps

Methyl 4-(5-chloro-4-(methylamino)pyrimidin-2-ylamino)-3-(difluoromethoxy)benzoate (500 mg) was dissolved in 5 mL of THF and 5 mL of water. After dissolution, 234 mg of lithium hydroxide was added and the reaction was stirred at room temperature over night. The mixture was checked by LCMS and then carefully acidified with 1N HCl and partitioned with ethyl acetate. The organic layer was concentrated and purified by silica gel chromatography to give 250 mg of 4-(5-chloro-4-(methylamino)pyrimidin-2-ylamino)-3-(difluoromethoxy)benzoic acid.

Provenance & Evidence