Efficient synthesis of 6,6a-dihydroisoindolo[2,1-a]quinazoline-5,11-dione derivatives catalyzed by functionalized nanoporous silica
作者:Ayeh Rayatzadeh、Sirous Haghipour
DOI:10.1007/s00706-020-02720-4
日期:2021.1
An efficient and facile method has been developed for the synthesis of various 6,6a-dihydroisoindolo[2,1-a]quinazoline-5,11-dione derivatives, via a three-component reaction of 2-amino-N-(R)-benzamide derivatives with 2-formylbenzoic acid using sulfonic acid functionalized nanoporous silica as an efficient catalyst in ethanol under reflux. High yield of the desired products, reusability of the catalyst
有效和容易的方法已被开发用于合成各种6,6-一个-dihydroisoindolo [2,1-一个]喹唑啉-5,11-二酮衍生物,通过2-氨基-三组分反应ñ - (R磺酸官能化的纳米多孔二氧化硅作为乙醇中回流的有效催化剂,用2-甲酰基苯甲酸生成)-苯甲酰胺衍生物。该方法的优点是所需产物的高收率,催化剂的可重复使用性以及不使用色谱法的轻松后处理步骤。 图形摘要