MOF nano porous-supported C-S cross coupling through one-pot post-synthetic modification

Metal−organic frameworks (MOFs) have appeared as appropriate materials in the formation of higher multi-functional materials. MOFs, sometimes referred to as porous coordination polymers (PCPs), are a sort of crystalline micro porous materials formed from transition metal ions or clusters and polytopic organic linkers which assemble into topologically diverse open network type structures [1]. These materials have attracted enormous attention over the past two decades, because of their porosity, high surface area and potential applications especially in gas separation and storage, heterogeneous catalysis with high activity, chemical sensing, and drug release [2]. Post synthetic modification (PSM) consists in the synthesis of known crystalline MOFs for introducing some active functional groups on the ligands to add a desired activity [3]. Here we wish to report the one-pot post-synthetic modification allows anchoring a molecular nickel furfural (Fu) complex into a functionalized mesoporous metal-organic framework (MOF) with amine, (UIO-66-NH2-Fu@Ni). This new catalyst was identified via FT-IR spectroscopy, 1HNMR spectroscopy, and nitrogen gas adsorption-desorption method, TGA, EDX-MAP, FE-SEM and XRD. The Ni complex supported UIO-66-NH2 nanocatalyst was effectively used as a heterogeneous catalyst for formation of molecules containing sulfur such as thioethers which are generally found in chemical biology, organic synthesis and materials chemistry through the C-S bond cross coupling of aryl iodides with thiols (sheme 1).

Keywords:

Metal−organic frameworks , Post synthetic modification , micro porous , heterogeneous catalyst , nanocatalyst , cross coupling