AbstractDiphenyl sulfide has been oxidized to the sulfoxide by a series of 4,4′‐disubstituted benzophenone oxides. The carbonyl oxides were produced by photosensitized oxidation of the corresponding diazo compounds. Treatment of the data by a Hammett ρΣ approach indicates that the oxygen atom transfer is electrophilic in nature with ρ = +0.90. The results are discussed in terms of analogous reactions which are mediated by flavin‐dependent monooxygenase and particularly those oxidations believed to be involved in producing hepa
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