An efficient synthesis of indoles via a CuMgAl-LDH-catalyzed cyclization of 2-alkynylsulfonanilides
作者:Sheng-Yan Zhang、Shan-Gang Sun、Yu-Shuang Guo、Xiao-Fan Lu、Dian-Shun Guo
DOI:10.1016/j.tetlet.2018.09.009
日期:2018.10
A highly efficient method for the synthesis of indoles has been successfully developed via a CuMgAl-LDH-catalyzed intramolecular annulation reaction of 2-alkynylsulfonanilides. This CuMgAl-LDH catalyst features facile preparation, recovery, and reuse at least seven times without a marked loss in the catalytic activity, as well as the unique dual activation. Moreover, the crystal structures and Hirshfeld
通过CuMgAl-LDH催化的2-炔基磺酰苯胺的分子内环化反应已成功开发了一种高效的吲哚合成方法。这种CuMgAl-LDH催化剂的特征是易于制备,回收和重复使用至少7次,而催化活性没有明显损失,并且具有独特的双重活化作用。此外,还介绍了典型的吲哚化合物的晶体结构和Hirshfeld表面分析。