methyl 3-(3-chloro-2-methylbenzyl)-2-methyl-5-morpholino-3H-imidazo[4,5-b]pyridine-7-carboxylate → 3-(3-chloro-2-methylbenzyl)-2-methyl-5-morpholino-3H-imidazo[4,5-b]pyridine-7-carboxylic acid

Participants

Reaction Conditions

Reaction Steps

A mixture of methyl 3-(3-chloro-2-methylbenzyl)-2-methyl-5-morpholino-3H-imidazo[4,5-b]pyridine-7-carboxylate (239 mg, 0.58 mmol) in 2N LiOH (15 mL) and THF (15 mL) was stirred at 60° C. for 5 h. It was cooled to room temperature and the precipitate was collected by filtration. It was then poured into water (100 mL) and the suspension was acidified with formic acid to pH=1. It was filtered and the solid was washed with water to afford the desired product as a gray solid (163 mg, 71%). LC/MS: MS (ES+) m/e 401 (MH+); 1H NMR (300 MHz, DMSO-d6) δ ppm 2.36 (s, 3H), 2.44 (s, 3H), 3.41 (s, 4H), 3.69 (s, 4H), 5.44 (s, 2H), 6.40 (d, J=7.5 Hz, 1H), 7.05-7.11 (m, 2H), 7.35 (d, 1H).

Provenance & Evidence