反应详情

温度

62 °C

A mixture of 7.75 g of trans-β-benzoylacrylic acid, 25.8 ml of ethanol and 1.63 g of sulfuric acid was stirred at 62° C. for 3 hours. A pressure was gradually reduced with the aspirator and ethanol was distilled away for 20 minutes. After a pressure was finally reduced to 20 mmHg, the resultant was stirred at 62° C. for 1.5 hours and then cooled, followed by the procedure as in Example 1 to give 8.18 g of ethyl trans-β-benzoylacrylate.

1. distillationwas distilled away for 20 minutes
2. stirringthe resultant was stirred at 62° C. for 1.5 hours
3. temperaturecooled