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Magnetically recoverable Fe3O4@SiO2@SBA-3@2-ATP-Cu: an improved catalyst for the synthesis of 5-substituted 1H-tetrazoles.

ABSTRACT: Functionalization of Fe3O4@SiO2@SBA-3 with double-charged 3-chloropropyltrimethoxysilane (CPTMS) and 2-aminophenol, followed by mechanical mixing of the solid product with copper(i) chloride produces a new, greener and efficient Fe3O4@SiO2@SBA-3@2-ATP-Cu catalyst for the synthesis of 5-substituted 1H-tetrazoles. XRD, SEM, atomic absorption, TGA, N2 adsorption-desorption, and VSM analyses were performed for the characterization of the Fe3O4@SiO2@SBA-3@2-ATP-Cu structure. Nitrogen adsorption-desorption analysis revealed that Fe3O4@SiO2@SBA-3@2-ATP-Cu has a surface area of 242 m2 g-1 and a total pore volume of 55.72 cm3 g-1. In synthesizing 5-substituted 1H-tetrazoles, Fe3O4@SiO2@SBA-3@2-ATP-Cu shows superior yields in short reaction times at 120 °C. This catalyst also showed high thermal stability and recyclability at least for 4 runs without apparent loss of efficiency.

SUBMITTER: Heidarnezhad Z 

PROVIDER: S-EPMC11334987 | biostudies-literature | 2024 Aug

REPOSITORIES: biostudies-literature

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Magnetically recoverable Fe<sub>3</sub>O<sub>4</sub>@SiO<sub>2</sub>@SBA-3@2-ATP-Cu: an improved catalyst for the synthesis of 5-substituted 1<i>H</i>-tetrazoles.

Heidarnezhad Zahra Z   Ghorbani-Choghamarani Arash A   Taherinia Zahra Z  

Nanoscale advances 20240715 17

Functionalization of Fe<sub>3</sub>O<sub>4</sub>@SiO<sub>2</sub>@SBA-3 with double-charged 3-chloropropyltrimethoxysilane (CPTMS) and 2-aminophenol, followed by mechanical mixing of the solid product with copper(i) chloride produces a new, greener and efficient Fe<sub>3</sub>O<sub>4</sub>@SiO<sub>2</sub>@SBA-3@2-ATP-Cu catalyst for the synthesis of 5-substituted 1<i>H</i>-tetrazoles. XRD, SEM, atomic absorption, TGA, N<sub>2</sub> adsorption-desorption, and VSM analyses were performed for the ch  ...[more]

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