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

Lasemi, Zahra; Mehrasbi, Ebrahim

Manuscript ID : 522318 Visit : 236 Page: 79 - 85

Article Type: Original Research

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

Subject Areas : Polymer

Zahra Lasemi ¹ , Ebrahim Mehrasbi ²

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Received: 2016-04-27 Accepted : 2016-04-27 Published : 2015-10-01

Keywords:

Abstract :

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.

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