Methanol → 2-(2-(1-isopropyl-3-methyl-1H-1,2,4-triazol-5-yl)-5,6-dihydrobenzo[f]imidazo[1,2-d][1,4]oxazepin-9-yl)acetic acid

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Reaction Conditions

Reaction Steps

A mixture of 98 mg (0.257 mmol) of methyl 2-(2-(1-isopropyl-1H-1,2,4-triazol-5-yl)-5,6-dihydrobenzo[f]imidazo[1,2-d][1,4]oxazepin-9-yl)acetate and 2.0 ml of 1.0 M of aqueous lithium hydroxide in 6 ml of methanol/tetrahydrofuram (1:1) mixture was stirred at 50° C. for 3 hours. The mixture was concentrated and acidified to pH 3 by careful addition of 1 N aqueous hydrogen chloride. The precipitate was collected and dried in high vacuum for 18 hours to give 2-(2-(1-isopropyl-3-methyl-1H-1,2,4-triazol-5-yl)-5,6-dihydrobenzo[f]imidazo[1,2-d][1,4]oxazepin-9-yl)acetic acid. Yield 58 mg. M/z 368.2, calc 367.16

Provenance & Evidence