Formaldehyde → HCID 18001025, compound

Participants

Reaction Steps

To a mixture of 1-[4-(1-piperazinyl)-2-chlorobenzoyl]-2,3,4,5-tetrahydro-1H-benzazepine (0.25 g), 37% formaldehyde (0.45 g) and sodium tetrahydro-1H-benzazepine (0.25 g), 37% formaldehyde (0.45 g) and sodium (0.12 g) under ice-cooling, and the mixture is stirred at room temperature for one hour. To the reaction solution is added ethyl acetate, and the mixture is washed with a 2N aqueous sodium hydroxide solution and distilled water. The organic layer is dried over magnesium sulfate, filtered, and concentrated, and the resulting residue is purified by silica gel column chromatography (solvent; dichloromethane:methanol=10:1) to give 1-[4-(4-methyl-1-piperazinyl)-2-chlorobenzoyl]-2,3,4,5-tetrahydro-1H-benzazepine (0.10 g) as white powder.

Provenance & Evidence