Highly efficient synthesis of 3-pyrrolyl-indolinones and pyrrolyl-indeno[1,2-b

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• 作者：Ali Reza Karimi ; Flora Behzadi ; Mostafa Mohammadpour Amini
• 关键词：Heteropolyacid ; Pyrroles ; 4-Hydroxyproline
• 刊名：Tetrahedron Letters
• 出版年：2008
• 出版时间：8 September 2008
• 年：2008
• 卷：49
• 期：37
• 页码：5393-5396
• 全文大小：175 K

文摘

Simple and improved conditions have been found for the synthesis of 3-pyrrolyl-indolinones and pyrrolyl-indeno[1,2-b]quinoxalines by coupling of 4-hydroxyproline with isatins and 11H-indeno[1,2-b]quinoxalin-11-ones using Keggin (H₃PW₁₂O₄₀) and Well–Dawson tungsten heteropolyacids (H₆P₂W₁₈O₆₂).