反应详情

Aqueous sodium hydroxide (1.5 mL of 50%, 19 mmol) was added to a mixture of ethyl 3-[2-(ethoxymethyl)-1H-imidazo[4,5-c]quinolin-1-yl]-2,2-dimethylpropanoate (5.0 g, 14 mmol), ethanol (50 mL), and water (5 mL). The reaction was stirred for two hours at ambient temperature; an analysis by TLC indicated that starting material was present. Additional aqueous sodium hydroxide (0.5 mL of 50%) was added, and the reaction was heated at reflux for two hours and concentrated under reduced pressure. Ethanol (100 mL) was added to the residue and then removed under reduced pressure to provide 3-[2-(ethoxymethyl)-1H-imidazo[4,5-c]quinolin-1-yl]-2,2-dimethylpropanoic acid, which was dried overnight under vacuum.

1. temperaturethe reaction was heated
2. temperatureat reflux for two hours
3. concentrationconcentrated under reduced pressure
4. additionEthanol (100 mL) was added to the residue
5. customremoved under reduced pressure