مشخصات پژوهش

عنوان	Silica sulfuric acid magnetic nanoparticle: An efficient and eco-friendly catalyst for synthesis of spiro[2-amino-4H-pyran-oxindole]s
نوع پژوهش	مقاله چاپ‌شده
کلیدواژه‌ها	magnetic nanoparticles, silica sulfuric acid, spiro[2-amino-4H-pyran-oxindole], isatin,ultrasound irradiation
چکیده	Silica sulfuric acid magnetic nanoparticles efficiently catalyze the one-pot, three-component reaction of isatins and malononitrile with dimedone, 1,3-dimethylbarbituric acid or 4-hydroxycoumarin in EtOH-H2O to afford the corresponding spiro[2-amino-4H-pyran-oxindole] derivatives in high yields under ultrasound irradiation at 60 °C. The heterogeneous nanocatalyst could be recovered easily from the reaction mixture using an external magnet and reused many times without significant loss of its catalytic activity.
پژوهشگران	مرضیه کریمی (نفر چهارم)، زینب دلیرنسب (نفر سوم)، میثم سوری نیا (نفر دوم)، علیرضا کریمی (نفر اول)