Post-functionalized iridium–Zr-MOF as a promising recyclable catalyst for the hydrogenation of aromatics

Abstract

The multifunctional heterogeneous catalyst iridium-Zr-based MOF is able to effectively catalyze the hydrogenation of aromatic compounds in high yields under mild conditions. The catalyst was found to be highly active and reusable, giving similar reactivity and selectivity after at least five catalytic uses.

A Multifunctional Zirconium‐Based Metal–Organic Framework for the One‐Pot Tandem Photooxidative Passerini Three‐Component Reaction of Alcohols

“…The MOF (Zr–MOF–FePC) was prepared by two consecutive PSMs (combined covalent and dative) as mentioned here (Scheme ): a) covalent PSM, an imine‐formation reaction between UiO‐66‐NH 2 ( 1 ) and 2‐pyridinecarboxaldehyde to give Zr–MOF–PC ( 2 ) as shown in Scheme (see Experimental Section for details); related chemistry has been successfully used to assemble UiO‐66‐NH 2 L (L=6‐(diisopropylaminomethyl)‐picolinaldehyde); b) dative PSM, metallation of Zr–MOF–PC with FeCl 3 ⋅6 H 2 O in ethanol at room temperature to produce Zr–MOF–FePC ( 3 ). The formation of the imine (C=N) bond in Zr–MOF–PC ( 2 ) was supported by FTIR spectroscopy based on the enhancement of the stretching band at 1570 cm −1 (Figure S1 in Supporting Information).…”

Catalytic Transfer Hydrogenation of Biomass‐Derived Carbonyls over Hafnium‐Based Metal–Organic Frameworks

“…MOFs have been explored for ab road range of catalytic transformations. Reported examples are condensation, [7] ring opening, [8] cycloaddition, [9] N-alkylation, [10] isomerization, [11] hydrogenation, [12] oxidation, [13] and carbene [14] reactions. MOFbased materials are suitable catalysts for the production of certain fine chemicals.…”

Using water adsorption measurements to access the chemistry of defects in the metal–organic framework UiO-66

“…14 When dealing with crystalline materials, defects and disorder are steady companions at temperatures above 0 K. Recently, it has been recognised that defects can be used to alter the properties of MOFs, especially their catalytic activity and sorption behaviour. [15][16][17][18][19][20] For instance, (defective) Zrbased MOFs have been used as Lewis acid catalysts in various reactions, including Meerwein reduction, 21 esterification, 22 hydrogenation of aromatic compounds, 23 epoxide ringopening reaction and others. 19 Despite the large interest of the community in this field, there is a current debate on what is the most effective set of experiments to determine the nature of defects, e.g.…”