Potassium and sodium salts of diphenylphosphine add to nitroarenes in the position ortho and para to the nitro group. Subsequent oxidation of σ H -adducts with potassium permanganate gave diphenyl(nitroaryl)phosphine oxides. ... In this letter we report that diphenyl-[o(p)-nitroaryl ]phosphinoxides can be synthesized via oxidative nucleophilic substitution of hydrogen (ONSH) in nitroarenes with anion of diphenylphosphine. ... Oxidative nucleophilic ...