Compared with the activity of sodium methoxide, sodiumethoxide, sodium isopropyl, sodium tert-butoxide, the best base catalyst was sodium tert-butoxide.
比较甲醇钠、乙醇钠、异丙醇钠和叔丁醇钠催化活性,叔丁醇钠为最佳的催化剂。
2
Synthesis of coumarin-3-carboxylic acid through sodiumethoxide catalyzed synthesis of coumarin -3-carboxylic acid ethyl ester, followed by saponification, acidolysis cyclization was studied.