反应详情

35 μl (0.322 mmol) of 4-methylmorpholine are added to a solution of 100 mg (0.322 mmol) of [3-(5-methyl-1,2,4-oxadiazol-3-yl)phenoxyl]-2-phenylacetic acid, 61.3 mg (0.322 mmol) of 1-(4-aminophenyl)piperidin-2-one (prepared from 1-(4-nitrophenyl)piperidin-2-one by hydrogenation using Raney nickel as catalyst), 61.7 mg (0.322 mmol) of N-(3-dimethylaminopropyl)-N′-ethylcarbodiimide hydrochloride (DAPECI) and 49.3 mg (0.322 mmol) of hydroxybenzotriazole hydrate (HOBt) in 3 ml of DMF, and the mixture is stirred at room temperature for 48 hours. The reaction mixture is introduced into aqueous sodium carbonate solution, and the precipitate is filtered off, giving 2-[3-(5-methyl-1,2,4-oxadiazol-3-yl)phenoxy]-N-[4-(2-oxopiperidin-1-yl)phenyl]-2-phenylacetamide as a colourless solid; ESI 483.

1. filtrationthe precipitate is filtered off