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Title
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Poly(sulfonamide-thiourea) grafted γ-Fe2O3@talc as a green catalyst for the synthesis of substituted tetrahydropyridines
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Type
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JournalPaper
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Keywords
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-Fe2O3/ talc, poly(sulfonamide-thiourea) (PBST), tetrahydropyridine
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Abstract
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Herein, we aim to study the role of template and polymers on the synthesis of tetrahydropyridine scaffolds, novel composite (γ-Fe2O3@talc@PBST) was synthesized from immobilization of poly (sulfonamide-thiourea) on the surface of γ-Fe2O3@talc. Poly(sulfonamide-thiourea) (PBST) was synthesized for the first time as a polydentate nitrogen donor ligand and combined with the γ-Fe2O3@talc as a novel organic-inorganic catalyst in order to construct of tetrahydropyridine derivatives from the reaction of aromatic aldehydes, anilines and 1,3-dicarbonyl compounds in good to excellent yield. Additionally, γ-Fe2O3@talc@PBST has shown a very good reusability up to six consecutive recycle tests and its activity has not changed significantly. The prepared γ-Fe2O3@talc@PBST has an excellent catalytic activity, which is due to the combined effect of Brønsted acidity and high density functional groups.
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Researchers
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(Third Researcher), (First Researcher), Ramin Ghorbani-Vaghei (Second Researcher)
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