Ammonia → HCID 20338073, compound

Participants

Reaction Steps

To 10 ml of methylene chloride solution containing 50 mg of 2-(5,6-dihydro benzo[b]pyrido[3,2-f]oxepin-8-yl)-propionic acid and 50 mg of dicyclohexylcarbodiimide was added 5 ml of methylene chloride saturated with ammonia, and the mixture was stirred with ice-cooling for 2 hours. To this were added acetic acid and ice and the resulting mixture was extracted with chloroform. The extract was washed with saturated sodium hydrogencarbonate solution, then saturated sodium chloride solution, and dried over anhydrous sodium sulfate. The solvent was distilled off to obtain the residue, which was extracted with ethyl acetate and the extract was freed of the solvent. The resulting residue was chromatographed over silica gel, eluted with n-hexane/acetone (4/1-1/1), and there was obtained 22 mg of 2-(5,6-dihydro benzo[b]pyrido[3,2-f]oxepin-8-yl)-propionamide as white crystals. These were recrystallized from ethyl acetate to give colorless crystals having a melting point of 162°-165° C.

Provenance & Evidence