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

الموضوعات :

Zahra Lasemi ¹ , Ebrahim Mehrasbi ²

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تاريخ الإرسال : 20 الأربعاء , رجب, 1437 تاريخ التأكيد : 20 الأربعاء , رجب, 1437 تاريخ الإصدار : 18 الخميس , ذو الحجة, 1436

الکلمات المفتاحية:

ملخص المقالة :

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.