2-(4-ToIuenesulphonyl)-3-aryloxaziridines as Oxidizing Reagents for P(III) Compounds

Until recently, no generally applicable oxidizing reagents were known for P(III) compounds, al­ though P(III) compounds are readily oxidized to form the corresponding P(V) compounds. All of the oxidizing reagents that were tested, e.g. hydro­ gen peroxide [1], aqueous iodine [2], nitrogen ox­ ides [3], 3,3-dimethyloxirane, stilbenene ozonide [4], m-chlorperbenzoic acid [5], tetrabutylammonium periodate, diacetoxyiodosobenzene [6], di­ methyl selenoxide [7] and bis(trimethylsilyl)peroxide [8] have a limited scope as oxidizing reagents for P(III) compounds. In 1972, a kinetic study of the deoxygenation of 2-alkyl-3-aryloxaziridines by tributylphosphine was described [9], For a long time, the oxidation of P(III) compounds by oxaziridines seems to have been neglected, although there has been consider­