Methanol → HCID 18315358, compound

Participants

Reaction Conditions

Reaction Steps

A 1N aqueous solution of sodium hydroxide (1.5 ml) was added to a methanol solution (6 m.) of 5-(3-tert-butyloxycarbonylaminomethylphenyl)-7-chloro-2,3-dihydro-2-oxo-1H-1,4-benzodiazepine-3-acetic acid methyl ester (0.6 g), the compound produced in Example 97-(1). The mixture was stirred for 2 hours at 60° C. The reaction mixture was diluted with water (50 ml), which was acidified, followed by extraction with ethyl acetate (50 ml) twice. The extracts were combined and washed with a saturated aqueous saline solution, followed by drying over anhydrous sodium sulfate. The solvent was distilled off under reduced pressure to give 5-(3-tert-butyloxycarbonylaminomethylphenyl)-7-chloro-2,3-dihydro-2-oxo-1H-1,4-benzodiazepine-3-acetic acid (0.64 g) as a colorless amorphous solid product.

Provenance & Evidence