One-Pot Synthesis of Disubstituted Urea from Carbon Dioxide, Propylene Oxide, and Amines Catalyzed by Imidazolium-Tetraiodoindate
作者:Guang Meang Son、Cong Chien Truong、Dinesh Kumar Mishra、Vivek Mishra、Yong Jin Kim
DOI:10.1002/bkcs.11363
日期:2018.2
In this article, synthesis of 1,3‐disubstituted urea (DSU) from three component reagent systems comprising amine, carbon dioxide, and propylene oxide is described. DSU is synthesized in the presence of a variety of ionic liquids (ILs) with/without promoters. Among used ILs, 1‐butyl‐3‐methylimidazolium tetraiodoindateIII (represented as [Bmim][InI4]) is found to give the highest DSU product. A serious
在本文中,描述了由包含胺,二氧化碳和环氧丙烷的三组分试剂系统合成1,3-二取代尿素(DSU)。DSU是在具有/不具有促进剂的各种离子液体(IL)存在下合成的。在使用过的IL中,发现1-碘-3-甲基咪唑鎓四碘代酸酯III(表示为[Bmim] [InI 4 ])可提供最高的DSU产品。一项严肃的实验清楚地表明,四碘酸根阴离子对DSU的选择性生产起着重要作用。基于原位红外光谱研究,提出了由环己胺生产二环己基脲的合理反应机理。[Bmim] [InI 4的合成与表征详细说明。此外,还研究了反应变量如时间,温度,压力和底物与催化剂的摩尔比的影响。