Lignin Residue-Derived Carbon-Supported Nanoscale Iron Catalyst for the Selective Hydrogenation of Nitroarenes and Aromatic Aldehydes was written by Sarki, Naina;Kumar, Raju;Singh, Baint;Ray, Anjan;Naik, Ganesh;Natte, Kishore;Narani, Anand. And the article was included in ACS Omega in 2022.COA of Formula: C8H10O2 This article mentions the following:
Reported a green strategy for the facile synthesis of a lignin residue-derived carbon-supported magnetic iron (γ-Fe2O3/LRC-700) nanocatalyst. This active nanocatalyst exhibited excellent activity and selectivity for the hydrogenation of nitroarenes to anilines, including pharmaceuticals (e.g., flutamide and nimesulide). Challenging and reducible functionalities such as halogens (e.g., chloro, iodo and fluoro) and ketone, ester and amide groups were tolerated. Moreover, biomass-derived aldehyde (e.g., furfural) and other aromatic aldehydes were also effective for the hydrogenation process, often useful in biomedical sciences and other important areas. Before and after the reaction, the γ-Fe2O3/LRC-700 nanocatalyst were thoroughly characterized by X-ray diffraction (XRD), N2 adsorption-desorption, XPS, high-resolution transmission electron microscopy (HR-TEM), Raman spectroscopy and thermogravimetric anal. (TGA). Addnl., the γ-Fe2O3/LRC-700 nanocatalyst was stable and easily separated using an external magnet and recycled up to five cycles with no substantial drop in the activity. Eventually, sustainable and green credentials for the hydrogenation reactions of 4-nitrobenzamide to 4-aminobenzamide and benzaldehyde to benzyl alc. were assessed with the help of the CHEM21 green metrics toolkit. In the experiment, the researchers used many compounds, for example, (4-Methoxyphenyl)methanol (cas: 105-13-5COA of Formula: C8H10O2).
(4-Methoxyphenyl)methanol (cas: 105-13-5) belongs to ethers. The oxygen atom in ethers are more electronegative than carbon, thus the hydrogens which are alpha to the ethers are more acidic than the simple hydrocarbons. The unique properties of ethers (i.e., that they are strongly polar, with nonbonding electron pairs but no hydroxyl group) enhance the formation and use of many reagents. For example, Grignard reagents cannot form unless an ether is present to share its lone pair of electrons with the magnesium atom. Complexation of the magnesium atom stabilizes the Grignard reagent and helps to keep it in solution.COA of Formula: C8H10O2
Referemce:
Ether – Wikipedia,
Ether | (C2H5)2O – PubChem