反应详情

温度

60 °C

1-Ethyl-3-(3-dimethylaminopropyl)carbodiimide hydrochloride (31 mg, 0.16 mmol) and 1-hydroxybenzotriazole monohydrate (25 mg, 0.16 mmol) were added to a pyridine (4 ml) solution of the ((4-(5-benzoylbenzimidazol-2-yl)-3,5-dimethylpyrrol-2-yl)-carbonyl)piperidine-4-carboxylic acid (70 mg, 0.15 mmol) obtained in Example 45. N,N-Dimethylethylenediamine (13 mg, 0.15 mmol) was added to the reaction mixture and heated. The reaction mixture was stirred at 60° C. (internal temperature) for 10 hours, and then allowed to cool to room temperature with stirring. The solvent was evaporated, and the residue was purified using medium pressure silica gel flash column chromatography (NH silica gel, chloroform:methanol=98:2) to afford N-dimethylaminoethyl-1-((4-(5-benzoylbenzimidazol-2-yl)-3,5-dimethylpyrrol-2-yl)-carbonyl)piperidine-4-carboxamide (44 mg, 55%) as white crystals.

1. temperatureheated
2. temperatureto cool to room temperature
3. stirringwith stirring
4. customThe solvent was evaporated
5. customthe residue was purified