Citric acid:An efficient and green catalyst for rapid one pot synthesis of quinoxaline derivatives at room temperature  

作　　者：Radhakrishnan Mahesh Arghya Kusum Dhar Tara Sasank T.V.N.V. Sappanimuthu Thirunavukkarasu Thangaraj Devadoss 

机构地区：[1]Birla Institute of Technology & Science,Pilani,Rajasthan-333031,India [2]Orchid Chemicals and Pharmaceutical Ltd.,Sholinganallur,Chennai-600119,India

出　　处：《Chinese Chemical Letters》2011年第4期389-392,共4页中国化学快报（英文版）

基　　金：supported by the University Grants Commission(UGC),New Delhi,India.

摘　　要：The condensation of o-phenylenediamines with 1,2-dicarbonyl compounds in the presence of citric acid afforded the corresponding quinoxaline derivatives in higher yields at room temperature in ethanol,and most of the reactions were completed in less than 1 min.The condensation of o-phenylenediamines with 1,2-dicarbonyl compounds in the presence of citric acid afforded the corresponding quinoxaline derivatives in higher yields at room temperature in ethanol,and most of the reactions were completed in less than 1 min.

关 键 词：Quinoxalins Citric acid O-PHENYLENEDIAMINES 1 2-Dicarbonyl compounds Green catalyst 

分 类 号：O643.36[理学—物理化学]