Hydrochloric Acid → 9-(1-Isopropyl-1H-pyrazol-5-yl)-6,7-dihydroimidazo[1,2-d]pyrido[3,2-b][1,4]oxazepine-3-carboxylic acid

Participants

Reaction Steps

A mixture of 21 mg (0.06 mmol) of methyl 9-(1-isopropyl-1H-pyrazol-5-yl)-6,7-dihydroimidazo[1,2-d]pyrido[3,2-b][1,4]oxazepine-3-carboxylate and 1.0 ml of 1 N aq LiOH in 4 ml of methanol and 4 ml of tetrahydrofuran was stirred for 6 hours. The mixture was acidified to pH 3 by addition of 1 N HCl and concentrated in vacuum. The residue was partitioned between ethyl acetate and water, the organic layer was washed with brine, dried over Na2SO4 and concentrated. Yield 17 mg. MS(ESI+): 340.1

Provenance & Evidence