Lithium Hydroxide → 6-(Isoindoline-2-carboxamido)pyridazine-3-carboxylic acid

Participants

Reaction Steps

To a solution of methyl 6-(isoindoline-2-carboxamido)pyridazine-3-carboxylate (3.7 g, 12.4 mmol) in MeOH (40 mL) and THF (40 mL), a solution of LiOH (0.7 g, 29.2 mmol) in water (10 mL) was added at room temperature. The reaction mixture was stirred overnight at room temperature. The reaction mixture was poured into water (100 mL), extracted with EtOAc (2×50 mL) and the aqueous layer was acidified by addition of 2 NHCl to pH 3 to give a precipitate. The precipitate was washed with water and dried in high vacuum to give the title compound.

Provenance & Evidence