Collect. Czech. Chem. Commun. 1991, 56, 2869-2871

Synthesis of triphenylarsine oxide by oxidation of triphenylarsine by oxygen under the catalytic effect of iron compounds

Vlasta Vančová and Iveta Ondrejkovičová

Department of Inorganic Chemistry, Slovak Technical University, 812 37 Bratislava


Triphenylarsine oxide can be prepared conveniently by reacting triphenylarsine with dioxygen in the presence of iron compounds of the type of FeX3. [FeX3(OAsPh3)2] and [Fe(OAsPh3)4].(I3)2 (X = Br, SCN; Ph = C6H5), which act as catalysts. The last-mentioned compound was found most catalytically active. Conducted in acetonitrile solution at slightly elevated temperatures (60 to 70°C) and atmospheric pressure of dioxygen, the oxidation is selective and quantitative.