Simple, rapid, and clean condensation of sulfonamide and maleic anhydride derivatives: Synthesis of novel 1<i>H</i>- Pyrrole-2,5-diones under heterogeneous conditions
作者:Chafika Bougheloum、Samia Guezane Lakoud、Robila Belghiche、Abdelrani Messalhi
DOI:10.1080/10426507.2016.1193504
日期:2016.10.2
GRAPHICAL ABSTRACT 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
图形摘要 摘要 H6P2W18O62 可用作通过磺酰胺和马来酸酐衍生物缩合合成新型 N-取代磺酰基马来酰亚胺(1H-吡咯-2,5-二酮)的有效催化剂。Dawson 杂多酸在回流下以在乙腈中的催化量为 2 mmol% 使用。H6P2W18O62 作为多相催化剂多次重复使用而不会降低其活性、反应时间短、易于分离所需产物且产率良好至极好显示了这种新方法的优点。