A novel strategy for the synthesis of oxazolidin‐2‐ones from vicinal diols and urea is described. In this heterocycle synthesis, two different C−O and C−N bonds are sequentially formed in a domino process consisting of nucleophilic substitution and alcohol amination. The use of readily available starting materials and the good atom economy render this process environmentally benign. While this transformation
Novel MCM-41 Supported Dicationic Imidazolium Ionic Liquids Catalyzed Greener and Efficient Regioselective Synthesis of 2-Oxazolidinones from Aziridines and Carbon Dioxide
作者:Yulin Hu、Lili Yang、Xiaobing Liu
DOI:10.3390/molecules28010242
日期:——
MCM-41@ILLaCl4 under mild conditions. Merits of this meticulously designed protocol are the use of a novel supported ionic liquid catalyst, the easy work-up process, good to excellent yields, a short reaction time, and purification without column chromatography. Overall, the present protocol of synthesizing 2-oxazolidinones under cocatalyst- and solvent-freeconditions using MCM-41@ILLaCl4 is promising for
合成了一种 MCM-41 负载的双咪唑鎓离子液体纳米催化剂,并发现其能够通过 CO2 与氮丙啶的可持续化学转化来合成 2-恶唑烷酮。结果表明,在催化量的固体催化剂MCM-41@ILLaCl4存在下,在温和条件下,一系列氮丙啶和 的环加成反应达到了最高效率。这种精心设计的方案的优点是使用新型负载离子液体催化剂、简单的后处理过程、良好至优异的收率、反应时间短以及无需柱色谱纯化。总体而言,目前使用 MCM-41@ILLaCl4 在无助催化剂和无溶剂条件下合成 2-恶唑烷酮的方案具有工业应用前景。