A Simple and Convenient Synthesis of 4-Ylidene-5(4<i>H</i>)oxazolone Derivatives: Oxazolone Ring Transformation Leading to Other Heterocyclic Structures
作者:Ramadan M. Abdel-Motaleb、Hadeer M. Bakeer、Gammal H. Tamam、Wael A. A. Arafa
DOI:10.1002/jhet.938
日期:2012.9
yield synthetic procedure for the synthesis of 4‐ylidene‐5(4H)‐oxazolones 2a–m from arylidene‐malononitriles under solvent‐free conditions is described. The scope of this reaction was investigated, and it was found that the presence of anhydrous sodium acetate gave the corresponding oxazolones in excellent yields. The newly generated oxazolone derivative 2m underwent ring transformation into pyrroles,
描述了一种简单,有效且高收率的合成方法,该方法可在无溶剂条件下从亚芳基丙二腈合成2亚胺5a -m(4 H)-恶唑酮2a-m。研究了该反应的范围,发现无水乙酸钠的存在以优异的产率得到了相应的恶唑酮。新产生的恶唑酮衍生物2m进行环转化为吡咯,咪唑,哒嗪和三嗪。