Synthesis of spirooxindoles promoted by the deep eutectic solvent, ZnCl2+urea via the pseudo four-component reaction: anticancer, antioxidant, and molecular docking studies

AbstractVarious spirooxindoles (7a–c, 8a–c, 9a–c, and 10a–c) were efficiently synthesized using deep eutectic solvent ZnCl2+urea and well characterized using IR, 1H NMR, and 13C NMR spectroscopic t...