An efficient method for selective oxidation of (oxime)Pt(II) to (oxime)Pt(IV) species using N,N-dichlorotosylamide

The oxidation of (oxime)Pt-II species using the electrophilic chlorine-based oxidant N,N-dichlorotosylamide (4-CH3C6H4SO2NCl2) was studied. The reactions of trans-[PtCl2(oxime)(2)] (where oxime = acetoxime, cyclopentanone oxime, or acetaldoxime) with this oxidant led to trans-[PtCl4(oxime)(2)] products. The oxidation of trans-[Pt(o-OC6H4CH = NOH)(2)] at room temperature gave trans-[PtCl2(o-OC6H4CH = NOH)(2)], whereas the same reaction upon heating was accompanied by electrophilic substitution of the benzene rings.