N,N-disulfo-1,1,3,3-tetramethylguanidinium carboxylate ionic liquids as reusable homogeneous catalysts for multicomponent synthesis of tetrahydrobenzo[a]xanthene and tetrahydrobenzo[a]acridine derivatives

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• 作者：Arup Kumar Dutta ; Pinky Gogoi ; Susmita Saikia ; Ruli Borah ; ^{rulitezu@gmail.com}
• 关键词：TMG ; Disulfonic carboxylate ionic liquid ; Tetrahydrobenzo[a]xanthenone ; Tetrahydrobenzo[a]acridinone ; Reusable catalyst
• 刊名：Journal of Molecular Liquids
• 出版年：2017
• 出版时间：January 2017
• 年：2017
• 卷：225
• 期：Complete
• 页码：585-591
• 全文大小：1224 K
• 卷排序：225

文摘

Three new members of TMG-based N,N-disulfonic ILs are prepared. TGA analysis shows their thermal stability within the range of 270–300 °C. The Hammett study determines the acidity order of all the TMG-based ILs. They are optimized as recyclable homogeneous catalysts for heterocycle synthesis. It describes the first four-component synthesis of tetrahydrobenzo[a]acridinones.