مشخصات پژوهش

عنوان	Synthesis of mono- and bis-spiro-2-amino-4H-pyrans catalyzed by S-alkyl O-hydrogen sulfothioate functionalized silica-coated magnetic nanoparticles under ultrasound irradiation
نوع پژوهش	مقاله چاپ‌شده
کلیدواژه‌ها	Magnetic nanoparticles  Mono- and bis-spiro-2-amino-4H-pyrans  Ultrasound irradiation  1,3-Dicarbonyl compounds
چکیده	New S-alkyl O-hydrogen sulfothioate functionalized silica-coated magnetic nanoparticles were prepared in a simple method and evaluated as an efficient catalyst in synthesis of mono- and bis-spiro-2-amino-4H-pyrans through three or pseudo-five component reaction of isatins or bis-isatins and malononitrile with dimedone or 4-hydroxycoumarin. The yields were excellent, and the catalyst could be recovered simply from the reaction mixture using an external magnet and reused at least five times without noticeable loss of catalytic activity.
پژوهشگران	علیرضا کریمی (نفر اول)، زینب دلیرنسب (نفر سوم)، ریحانه داوود آبادی (نفر دوم)