Lithium hydroxide, monohydrate → 4-Fluoro-3-(imidazo[1,2-a]pyridine-3-carboxamido)benzoic Acid

Participants

Reaction Steps

A suspension of methyl 4-fluoro-3-(imidazo[1,2-a]pyridine-3-carboxamido)benzoate (step 1) (7.2 g, 22.98 mmol) in water (30 ml), THF (45.0 ml) and MeOH (15.00 ml) was treated with lithium hydroxide monohydrate (4.82 g, 115 mmol). The reaction mixture was stirred at RT overnight and concentrated in vacuo to remove THF and MeOH. The resulting mixture was acidified with 2M HCl to yield a solid that was collected by filtration and washed with ether (3×). The white solid was dried in the vacuum oven at 50° C. to afford the title compound as a hydrochloride salt;

Provenance & Evidence