Triazine bis(pyridinium) hydrogen sulfate ionic liquid immobillized on functionalized halloysite nanotubes as an efficient catalyst for one-pot synthesis of naphthopyranopyrimidines |
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| Authors: | Marzieh Samadani Beheshteh Asadi Iraj Mohammadpoor-Baltork Valiollah Mirkhani Shahram Tangestaninejad Majid Moghadam |
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| Affiliation: | Department of Chemistry, Catalysis Division, University of Isfahan, Isfahan 81746-73441 Iran, +98 31 3793 4927 |
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| Abstract: | 1,1′-(6-(Propyl amino)-1,3,5-triazine-2,4-diyl)bis(pyridinium) hydrogen sulfate immobillized on halloysite nanotubes [(PATDBP)(HSO4)2@HNT] as a solid acid nanocatalyst was successfully synthesized and characterized by various analysis techniques such as FT-IR, TGA, SEM/EDX, elemental mapping, TEM and elemental analysis. This catalyst was found to be highly efficient for the convenient synthesis of naphthopyranopyrimidine derivatives through a one-pot three-component reaction of β-naphthol, aldehydes and N,N-dimethylbarbituric acid in excellent yields under solvent-free conditions. Furthermore, the catalyst could be recovered and reused five times without any notable loss of its activity.A novel method for synthesis of naphthopyranopyrimidines, using [(PATDBP)(HSO4)2@HNT] as a green and reusable catalyst is reported. |
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