反应详情

Potassium carbonate (1.82 g, 13.3 mmol) was added to a solution of diethyl 5-methyl-3-phenyl-1H-pyrrole-2,4-dicarboxylate (1.0 g, 3.32 mmol) and 1-ethoxy-2-iodo-ethane (1.98 g, 9.96 mmol) in acetonitrile (20 mL) and the mixture heated at reflux for 72 h. The inorganic salts were filtered off and the filtrate was concentrated in vacuo to afford diethyl 1-(2-ethoxyethyl)-5-methyl-3-phenyl-pyrrole-2,4-dicarboxylate (1.25 g, quantitative).

1. temperaturethe mixture heated
2. temperatureat reflux for 72 h
3. filtrationThe inorganic salts were filtered off
4. concentrationthe filtrate was concentrated in vacuo