Simple,rapid, and clean condensation of sulfonamide and maleic anhydride derivatives: Synthesis of novel 1H- Pyrrole-2,5-diones under heterogeneous conditions |
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| Authors: | Chafika Bougheloum Samia Guezane Lakoud Robila Belghiche Abdelrani Messalhi |
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| Institution: | 1. Laboratoire des Systèmes et Matériaux Avancés, Badji Mokhtar Annaba-University, Annaba, Algeriac_bougheloum@yahoo.fr;3. Eco-compatible Asymmetric Catalysis Laboratory (LCAE), Badji Mokhtar Annaba-University, Annaba, Algeria;4. Laboratoire de Chimie des Matériaux Inorganiques, Badji Mokhtar Annaba-University, Annaba, Algeria;5. Laboratoire des Systèmes et Matériaux Avancés, Badji Mokhtar Annaba-University, Annaba, Algeria |
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| Abstract: | H6P2W18O62 is used as an efficient catalyst for the synthesis of novel N-substituted sulfonyl maleimides (1H-Pyrrole-2,5-diones) via the condensation of sulfonamide and maleic anhydride derivatives. The Dawson heteropolyacid was used with a catalytic amount of 2 mmol% in acetonitrile at reflux. The reuse of H6P2W18O62 as heterogeneous catalyst several times without decrease in their activity, short reaction times, easy isolation of desired products with good to excellent yields shows the advantages of this novel methodology. |
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| Keywords: | Sulfonamide maleimides (1H-Pyrrole-2 5-diones) Dawson heteropolyacid heterogeneous conditions catalyst reuse |
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