摘要：

Herein, we aim to study the role of template and polymers on the synthesis of tetrahydropyridine scaffolds, novel composite (γ-Fe 2 O 3 @ [emailprotected] ) was synthesized from immobilization of poly (sulfonamide-thiourea) on the surface of γ-Fe 2 O 3 @talc. Poly(sulfonamide-thiourea) (PBST) was synthesized for the first time as a polydentate nitrogen donor ligand and combined with the γ-Fe 2 O 3 @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-Fe 2 O 3 @ [emailprotected] has shown a very good reusability up to six consecutive recycle tests and its activity has not changed significantly. The prepared γ-Fe 2 O 3 @ [emailprotected] has an excellent catalytic activity, which is due to the combined effect of Brnsted acidity and high density functional groups.

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