Impact of Substituents on the Isatin Ring on the Reaction Between Isatins with Ortho-Phenylenediamine
作者:Reza Dowlatabadi、Ali Khalaj、Sima Rahimian、Maedeh Montazeri、Mohsen Amini、Ahmadreza Shahverdi、Elham Mahjub
DOI:10.1080/00397911.2010.491596
日期:2011.5.3
Abstract The reaction of different substituted isatins with ortho-phenylenediamine in acetic acid has been investigated. While electron-donor substituents on isatin shift the reaction toward classical 6H-indolo[2,3-b]quinoxaline ring closure, electron-withdrawing groups enhance the formation of 3-(2′-amino-5′-substituted)-quinoxaline-2(1H)-ones. The structures of all synthesized compounds were assigned
摘要 研究了不同取代的靛红与邻苯二胺在乙酸中的反应。虽然靛红上的电子给体取代基将反应转向经典的 6H-吲哚并[2,3-b]喹喔啉闭环,但吸电子基团增强了 3-(2'-氨基-5'-取代)-喹喔啉-的形成2(1H)-一个。通过使用红外、质谱、1H NMR、13C NMR、13C-1H HSQC 和 13C-1H 异核多键相关 (HMBC) 光谱数据确定所有合成化合物的结构。