Copper nanoparticles (CuNPs) catalyzed chemoselective reduction of nitroarenes in aqueous medium

Polyethylenimine as a Versatile Simultaneous Reducing and Stabilizing Agent Enabling One-Pot Synthesis of Transition-Metal Nanoparticles: Fundamental Aspects and Practical Implications

“…Mechanistically speaking, this model reduction reaction requires first the adsorption of the reactants (4-nitrophenolate anions and BH 4 – ) at the surface of the nanomaterials. Subsequently, the activation of the hydrides on the surface of the catalyst takes place, and these species are responsible for the reduction of the reactant into the corresponding hydroxylamine with subsequent desorption of the resulting product . The multistep process, focused mainly on the chemical transformation occurring in the main reactant, is cartooned in Figure .…”

EDA mediated S–N bond coupling of nitroarenes and sodium sulfinate salts

“…Furthermore, it would be ideal to couple the inherent photochemical properties of nitroarenes with the diversity and availability of sodium sulnate salts resulting in a more costeffective methodology that prescinds of super-stoichiometric reducing agents and expensive photocatalysts. [22][23][24] In this work, we report the rst visible-light mediated, catalyst-free S-N bond coupling for the synthesis of N-hydroxy-sulfonamide derivatives. Both alkyl and aryl sulnate salts were amenable to the methodology and tolerant to both oxygen and water.…”