Oxone and Derivatives

which is commercially available as a 2 1 1 mixture of KHSO5, KHSO4, and K2SO4, has been used for the oxidation of sulfides to sulfoxides [15]. It shows a tendency to overoxidation, and was originally used for the oxidation of sulfides to sulfones [16]. More recently, some improvements were obtained with surface-mediated oxone oxidations, the oxone being bound to a silica gel surface (Eq. (8.3)). However, some sulfone was still formed. 

In a recent modification of the oxone-type oxidation, the quaternary salt benzyl-triphenyl phosphonium peroxymonosulfate PhCH2Ph3P HS05 was employed (Eq. (8.4)). No overoxidation to sulfone was detected, according to the authors. 

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