An efficient one-pot synthesis process for preparing 2-imidazolines from aldehydes and ethylenediamine using molecular iodine and potassium carbonate in absolute ethanol at 25–30°C under ultrasound irradiation is described. The synthetic strategy has the following advantages: mild conditions and low costs requirements, readily available catalyst, short reaction times, simplicity of operation, and good-to-excellent yields.
本研究介绍了一种高效的单锅合成工艺,该工艺在 25-30°C 超声波照射下,使用分子
碘和
碳酸钾在绝对
乙醇中以醛和
乙二胺为原料制备
2-咪唑啉。该合成策略具有以下优点:条件温和、成本要求低、催化剂容易获得、反应时间短、操作简单以及良好的收率。