A Novel and Green Method for the Synthesis of Indeno[2,1-<i>c</i>]pyridine Derivatives in Ionic Liquid Catalyzed by Malononitrile
作者:Xiang-Shan Wang、Jian-Rong Wu、Qing Li、Chang-Sheng Yao、Shu-Jiang Tu
DOI:10.1055/s-2008-1072722
日期:2008.5
-Aryl-9H-indeno [2,1 -c]pyridine-4-carbonitrile derivatives were unexpectedly obtained from the reaction of 2-(2,3-dihydroinden-3-ylidene) malononitrile, benzaldehyde and malononitrile in ionic liquid at 90 °C. Modification of the novel reaction protocol resulted in a two-component reaction between 2-(2,3-dihydroinden-3-ylidene) malononitrile, and benzaldehyde catalyzed by 10 mol% malononitrile. A 1,5-hydrogen