Browsing by Author "Mansoori, Yagoub"

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An Efficient Supported Cu(I) Catalyst for the Amination of Aryl Halides With Sodium Azide
(Wiley-v C H verlag Gmbh, 2024) Fekri, Somayeh; Mansoori, Yagoub; Akinay, Yuksel; Cetin, Tayfun; John, Michael
We present the synthesis and characterization of a new Cu(I) complex supported on SBA-15 as a catalyst for preparing anilines from the reaction of aryl halides with sodium azide. The SBA-15 support was modified by treating it sequentially with (3-aminopropyl) triethoxysilane (APTES), cyanuric chloride, and 2-aminothiazole (AT). The modified mesoporous silica, SBA-15@BAT, was then treated with a CuI solution in acetonitrile to give SBA-15@BAT-Cu(I). The catalyst underwent thorough characterization using conventional methods. X-Ray photoelectron spectroscopy (XPS) analysis corroborated the presence of copper in the +1 oxidation state in the catalyst. The supported Cu(I) complex sufficiently catalyzed the amination reaction of iodo-, bromo-, and chloroarenes with NaN3. The catalyst was centrifuged, washed, and applied in the subsequent run. We investigated the effects of various reaction components and parameters to determine the optimal conditions for the reaction. The heterogeneous catalyst exhibited noticeable stability and was reused over seven runs with slight deactivation. Supporting and characterization of a new Cu(I) catalyst catalyst based on 2-aminothiazole-Cu(I) on SBA-15. Optimization of the reaction conditions for the supported catalyst in the amination of haloarens with sodium azide. Preparation of a wide range of anilines from chloro-, bromo-, and iodoarens. image
Magnetically Retrievable 2-(2-Pyridyl)benzimidazole-Cu(I) on SBA-15@Fe3O4 for Sodium Azide-Induced Amination of Aryl Halides
(Nature Portfolio, 2025) Abbasi, Zoleikha; Mansoori, Yagoub; Fekri, Somayeh; Akinay, Yuksel; Cetin, Tayfun
This study reports the synthesis and thorough characterization of a novel copper catalyst immobilized on magnetic mesoporous silica (Fe3O4@SBA-15). The catalyst preparation involved stepwise functionalization of Fe3O4@SBA-15 through sequential treatment with (3-aminopropyl)triethoxysilane (APTES), trichlorotriazine, and 2-(2-pyridyl)benzimidazole, resulting in Fe3O4@SBA-bis(PBI). Subsequent coordination with CuI in acetonitrile produced the final catalyst complex, Fe3O4@SBA-bis(PBI)-Cu. Extensive characterization was performed using standard spectroscopic techniques. The copper content of the catalyst was determined by atomic absorption spectroscopy to be 0.866 mmol g-1 (5.5 wt%). Catalytic performance evaluation demonstrated that Fe3O4@SBA-bis(PBI)-Cu effectively catalyzes the conversion of iodo-, bromo-, and chloroarenes to their respective anilines, using NaN3 as the nitrogen source. Notably, the catalyst exhibited excellent recyclability, maintaining catalytic activity over six successive cycles with minimal deactivation, highlighting its robustness and suitability for sustainable catalytic applications in organic synthesis. The low metal leaching (0.4%) shows that the copper is firmly bound to the ligand, and the reaction was mainly carried out by a heterogeneous catalyst.