Efficient and Facile Synthesis of 3-Amino-1-aryl-9<i>H</i>-fluorene-2,4-dicarbonitrile Under Solvent-Free Conditions
作者:Liangce Rong、Hongxia Han、Hong Jiang、Shujiang Tu
DOI:10.1080/00397910902779298
日期:2009.9.8
A versatile and efficient route to 3-amino-1-aryl-9H-fluorene-2,4-dicarbonitrile via multicomponent reactions of 1-indanone, aromatic aldehydes, and malononitrile under solvent-free conditions using NaOH as the catalyst is described. This method provides several advantages over alternative procedures such as mild, solvent-free conditions at ambient temperature and direct isolation of the products in good yields.