Lanthanum(III) nitrate hexahydrate or p-toluenesulfonic acid catalyzed one-pot synthesis of 4(3H)-quinazolinones under solvent-free conditions
作者:Manchala Narasimhulu、Kondempudi Chinni Mahesh、Thummalapally Srikanth Reddy、Karuturi Rajesh、Yenamandra Venkateswarlu
DOI:10.1016/j.tetlet.2006.04.096
日期:2006.6
The one-pot synthesis of quinazolinone derivatives from the reaction of anthranilic acid, trialkyl orthoformate and amines in the presence of lanthanum(III) nitrate hexahydrate or p-toluenesulfonic acid has been carried out. The reaction occurred in a few minutes under solvent-free conditions and in excellent yields.
由邻氨基苯甲酸,原甲酸三烷基酯和胺在六水合硝酸镧(Ⅲ)或对甲苯磺酸的存在下一锅合成喹唑啉酮衍生物。该反应在无溶剂条件下在几分钟内以极高的收率进行。