Hydrochloric Acid → HCID 22903517, compound

Participants

Reaction Steps

To a suspension of 7-chloro-5-hydroxy-1-[6-(2-methoxycarbonyl-benzoylamino)nicotinoyl]-2,3,4,5-tetrahydro-1H-benzazepine (0.3 g) in methanol (4 ml) is added 5% aqueous sodium hydroxide solution (1.5 ml), and the mixture is stirred at room temperature for one hour. To the reaction solution are added water and diluted aqueous hydrochloric acid solution in order to make the mixture weak acidic. The mixture is extracted with dichloromethane, and the extract is washed with water, dried over magnesium sulfate and evaporated under reduced pressure to remove the solvent. The residue is recrystallized from dichloromethane-methanol to give 7-chloro-5-hydroxy-1-[6-(2-carboxybenzoylamino)nicotinoyl]-2,3,4,5-tetrahydro-1H-benzazepine (150 mg) as white powder.

Provenance & Evidence