Triethylamine → HCID 131733336, compound

Participants

Reaction Conditions

Reaction Steps

To a solution of 200 mg of t-butyl 1,2,3,4,6,7,9,10-octahydro-8H-azepino[4,5-g]quinoline-8-carboxylate in 2.13 ml of dichloroethane were added 0.553 ml of triethylamine and 0.19 ml of ethyl chloroformate, followed by stirring at 60° C. for 2 hours. The reaction mixture was cooled to room temperature, and then the reaction mixture was diluted with EtOAc, washed with 1 M hydrochloric acid, water, a 1 M aqueous sodium hydroxide solution, and saturated brine, and concentrated, and the residue was purified by silica gel column chromatography (elution solvent: HEX-EtOAc). The resulting substance was dissolved in chloroform, followed by adding 0.05 ml of trifluoroacetic acid and stirring for 30 minutes. After concentration under reduced pressure, the resultant was dissolved in EtOH, neutralized by the addition of triethylamine, and then concentrated under reduced pressure. Then, the residue was purified by silica gel column chromatography (elution solvent: chloroform-MeOH-aqueous ammonia). The resulting substance was dissolved in EtOH and 76 mg of fumaric acid was added thereto. The resulting white solid was collected by filtration and dried to obtain 79 mg of ethyl 2,3,4,6,7,8,9,10-octahydro-1H-azepino[4.5-g]quinoline-1-carboxylate hemifumarate.

Provenance & Evidence