H6P2W18O62: A Green and Reusable Catalyst for the One-pot Three-Component Synthesis of Spirooxindoles in Water

Journal of Applied Chemical Research

مقاله 7، دوره 9، special issue، دی 2015، صفحه 79-85   

نوع مقاله: Research Paper

نویسندگان

Zahra Lasemi^* ؛ Ebrahim Mehrasbi

چکیده

Wells–Dawson tungsten heteropolyacid (H6P2W18O62) has been applied as an effective
heterogeneous catalyst for one-pot synthesis of spiro[4H-pyran-3,3’-oxindoles] via reaction of
various isatins, malonitrile and 1,3-dicarbonyl compound in water. The corresponding products
were obtained in high yields. The catalysts were easily recycled and reused without loss of their
catalytic activity. 

کلیدواژه‌ها

Heteropolyacids؛ Spirooxindole؛ Multi-component reaction؛ Aqueous medium؛ 1؛ 3-dicarbonyl compound