Simple, rapid, and clean condensation of sulfonamide and maleic anhydride derivatives: Synthesis of novel 1H- Pyrrole-2,5-diones under heterogeneous conditions

An efficient green synthesis of new benzothiazoles containing sulfonamide or cyclic imide moieties

“…Prompted by the aforementioned biological and pharmaceutical activities of benzothiazole derivatives, and as a part of an ongoing program aiming at the synthesis of new heterocyclic compounds . We describe herein an efficient procedure for the synthesis of a novel series of new benzothiazole derivatives, using ultrasound irradiation in the presence of Cesium salt of Wells‐Dawson heteropolyacid (Cs 5 HP 2 W 18 O 62 ) as catalyst.…”

Practical one‐pot, two‐step protocol for the ultrasound‐assisted synthesis of new mono‐ and bis‐pyrrolidine‐2,5‐diones containing sulfonamide moiety

“…Prompted by the aforementioned biological and pharmaceutical activities of pyrrolidine‐2,5‐dione (succinimide) derivatives, and as a part of an ongoing program aiming at the synthesis of new heterocyclic compounds, we describe herein an efficient and simple procedure for the synthesis of a novel series of mono‐ and bis‐pyrrolidine‐2,5‐dione derivatives (succinimides) containing sulfonamide moiety, with an alkyl spacer existing between these two functional motifs via a one‐pot reaction under ultrasound irradiation.…”