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   Reusable (MWCNTs)-COOH/Fe3O4-CaO Magnetic Nanostructure Promoted Three-Component Synthesis of Hexahydroacridine Derivatives  
   
نویسنده shabani omekolsoom ,nami navabeh ,hajinasiri rahimeh ,hosseinzadeh masoumeh
منبع journal of nanostructures - 2022 - دوره : 12 - شماره : 4 - صفحه:932 -947
چکیده    (mwcnts)-cooh/fe3o4-cao magnetic nanostructure was employed for the high-yield synthesis of hexahydroacridine-1,8-dione derivatives via three-component reaction of dimedone, unprotected sugars, and aniline or 4-bromoaniline in ethanol under reflux conditions. (mwcnts)-cooh/fe3o4-cao was prepared by cooh functionalized multi-walled carbon nanotubes (mwcnts)-cooh with fe3o4-cao nanoparticles in the presence of feso4 and eggshell. this heterogeneous hybrid nanostructure, (mwcnts)-cooh/fe3o4-cao, was determined by sem, tem, xrd, edx, ft-ir, and tga. the potential application of this covalently linked basic catalyst was also investigated as an efficient, recyclable, and heterogeneous catalyst for the synthesis of hexahydroacridine-1,8-dione. the condensation of dimedone with unprotected sugars and aniline or 4-bromoaniline in the presence of a catalytic amount of (mwcnts)-cooh/fe3o4-cao magnetic nanostructure gave hexahydroacridine-1,8-dione derivatives in good yields. the products were identified by ft-ir, nmr spectra, and elemental analysis. the catalyst was separated by an external magnet from the reaction mixture, washed, and dried at 100 °c for 2 h. the recovered catalyst was then re-entered into a fresh reaction mixture and recycled 5 times without considerable loss of activity.
کلیدواژه Heterogeneous catalyst ,Hexahydroacridine-1 ,8-dione ,(MWCNTs)-COOH/Fe3O4-CaO ,Magnetic nanomaterial
آدرس islamic azad university, qaemshahr branch, department of chemistry, Iran, islamic azad university, qaemshahr branch, department of chemistry, Iran, islamic azad university, qaemshahr branch, department of chemistry, Iran, islamic azad university, qaemshahr branch, department of chemistry, Iran
 
     
   
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