An efficient synthesis of indoles via a CuMgAl-LDH-catalyzed cyclization of 2-alkynylsulfonanilides |
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| Authors: | Sheng-Yan Zhang Shan-Gang Sun Yu-Shuang Guo Xiao-Fan Lu Dian-Shun Guo |
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| Affiliation: | College of Chemistry, Chemical Engineering and Materials Science, Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong, Shandong Normal University, Jinan 250014, PR China |
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| Abstract: | 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 surface analysis of typical indole compounds were also presented. |
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| Keywords: | Indole 2-Alkynylsulfonanilide Cyclization reaction CuMgAl-LDH catalyst Hirshfeld surface analysis |
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