Engineering a Cu‐MOF Nano‐Catalyst by using Post‐Synthetic Modification for the Preparation of 5‐Substituted 1H‐Tetrazoles

Abstract

A new nano scale Cu‐MOF has been obtained via post‐synthetic metalation by immersing a Zn‐MOF as a template in DMF solutions of copper(II) salts. The Cu‐MOF serves as recyclable nano‐catalyst for the preparation of 5‐substituted 1H‐tetrazoles via [3 + 2] cycloaddition reaction of various nitriles and sodium azide in a green medium (PEG). The post‐synthetic metalated MOF were characterized by FT‐IR spectroscopy, powder X‐ray diffraction (PXRD), atomic absorption spectroscopy (AAS), and energy dispersive X‐ray spectroscopy (EDX) techniques. The morphology and size of the nano‐catalyst were determined by field emission scanning electron microscopy (FE‐SEM).

Tandem magnetization and post‐synthetic metal ion exchange of metal–organic framework: Synthesis, characterization and catalytic study

“…The direct approach for synthesis of the Cu analog of CoFe 2 O 4 /Zn‐MOF (CoFe 2 O 4 /Cu‐MOF) by using CuCl 2 ·2H 2 O instead of Zn)NO 3 ) 2 ·6H 2 O was not successful . So, the metal‐exchange PSM was applied by using CoFe 2 O 4 /Zn‐MOF as template via immersing in DMF solution of CuCl 2 ·2H 2 O for 6 days at room temperature.…”

“…The engineering of MM‐MOFs can lead to new frameworks with novel or multiple functions improving catalytic or gas sorption performance. Previous studies have shown the properties of several synthesized MM‐MOFs …”

“…Previous studies have shown the properties of several synthesized MM-MOFs. [15][16][17][18][19][20][21] Mixed-metal MOFs were found to be potential heterogeneous catalysts with better catalytic performance compared with the analogous single-metal MOFs. This superior performance is due to bi-and multi-functional active catalytic sites that can promote reactions that require more than one type of site.…”

Preparation of core/shell/shell CoFe2O4/OCMC/Cu (BDC) nanostructure as a magnetically heterogeneous catalyst for the synthesis of substituted xanthenes, quinazolines and acridines under ultrasonic irradiation

“…Metal–organic frameworks (MOFs), which are constructed via coordinating polytopic organic ligands with clusters or metal ions, have aroused tremendous attention in the fields of catalysis, gas adsorption and desorption,drug delivery and sensing, due to their unique features such as various functionalities, extensive surface areas, adjustable internal surface properties, and high regular pores …”

CoFe2O4/TMU‐17‐NH2 as a hybrid magnetic nanocomposite catalyst for multicomponent synthesis of dihydropyrimidines

“…Over the past three decades, the synthesis of metal–organic frameworks (MOFs) as porous crystalline hybrid materials by assembling metal nodes and organic ligands has attracted considerable attention with the aim of finding meaningful applications in various fields such as gas storage and separation, drug delivery, optics, sensing and biomedical imaging . Due to the diversity in metal centres and functional groups, high surface area and tunable porosity, MOFs can be valid as versatile heterogeneous catalysts . Among various catalyst separation techniques in organic synthesis, a simple magnetic isolation process eliminates the requirement of catalyst filtration and centrifugation; so, MOFs based on a magnetic support provide easy manipulation.…”