Ga(ClO₄)₃-catalyzed synthesis of quinoxalines by cycloaddition of 伪-hydroxyketones and o-phenylenediamines

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• 作者：Fan Pan^a ; Tang-Ming Chen^a ; Jia-Jia Cao^a ; Jian-Ping Zou^a ; ^{jpzou@suda.edu.cn} ; Wei Zhang^b ; ^{wei2.zhang@umb.ed}
• 关键词：Quinoxalines ; 伪-Hydroxyketones ; o-Phenylenediamines ; Cycloaddition ; Gallium perchlorate
• 刊名：Tetrahedron Letters
• 出版年：2012
• 期刊代码：109_00404039
• 类别：ch
• 出版时间：16 May, 2012
• 卷：53
• 期：20
• 页码：2508-2510
• 文件大小：2132 K

摘要

A new approach for the synthesis of 2-substituted quinoxalines by Ga(ClO₄)₃-catalyzed cycloaddition of 伪-hydroxyketones and o-phenylenediamines is introduced. The reaction is catalyzed by 10 mol %of Ga(ClO₄)₃ in EtOH at room temperature. It is performed under simple and mild conditions to afford the product in good yield.