Poly(4-vinylpyridinium) hydrogensulfate catalyzed synthesis of 12-aryl-12H-indeno[1,2-b]naphtho[3,2-e]pyran-5,11,13-triones
作者:Nader Ghaffari Khaligh
DOI:10.1016/j.tetlet.2012.01.092
日期:2012.3
A simple and facile synthesis of 12-aryl-12H-indeno[1,2-b]naphtho[3,2-e]pyran-5,11,13-trione derivatives was accomplished via the one-pot condensation of 2-hydroxynaphthalene-1,4-dione, aldehydes, and 2H-indene-1,3-dione at 100 °C under solvent-free conditions in the presence of the solid acid catalyst, poly(4-vinylpyridinium) hydrogensulfate. This method has the advantages of high yields, clean reactions
通过2-锅一键缩合完成了12-芳基-12 H-茚并[1,2- b ]萘[3,2 - e ]吡喃-5,11,13-三酮衍生物的简单合成。在无溶剂条件下,在固体酸催化剂,聚(4-乙烯基吡啶)硫酸氢盐的存在下,在无溶剂的条件下,于100℃下,对羟基萘-1,4-二酮,醛和2 H-茚-1,3-二酮进行处理。该方法具有收率高,反应干净,方法简单,反应时间短的优点。该催化剂可以循环使用四次而不会明显损失活性。通过IR,1 H NMR和元素分析证实了新化合物的结构。