Citric Acid → HCID 59718785, compound

Participants

Reaction Steps

Under the nitrogen gas atmosphere, methyl 2-oxo-1,2,5,6,7,8,9,10-octahydro-cycloocta[b]pyridine-3-carboxylate (300 mg, 1.27 mmol) was dissolved in DMF (5 mL), sodium hydride (61 mg, 1.53 mmol) was added, and the mixture was stirred at room temperature for 30 minutes. After that, 4-cyanobenzylamine (274.9 mg, 1.40 mmol) was added, and the mixture was further stirred at room temperature for 1 hour. Subsequently, water and 5% citric acid were added to the reaction mixture, and the obtained mixture was extracted with ethyl acetate. The organic layer was washed with water and then dried with anhydrous sodium sulfate. The solvent was removed by distillation under reduced pressure, and the residue was refined with silica gel (10 g) column chromatography (ethyl acetate-hexane of 1:1 in mixing ratio), and colorless solid of methyl 1-(4-cyanobenzyl)-2-oxo-1,2,5,6,7,8,9,10-octahydro-cycloocta[b]pyridine-3-carboxylate (AA04, 100 mg, 22%, mp: 72-75° C.) and colorless solid of methyl 2-(4-cyanophenoxy)-5,6,7,8,9,10-hexahydro-cycloocta[b]pyridine-3-carboxylate (123 mg, 28%, mp: 122-123° C.) were obtained.

Provenance & Evidence