Oa. Kholdeeva et al., Role of protons in methyl phenyl sulfide oxidation with hydrogen peroxide catalyzed by Ti(IV)-monosubstituted heteropolytungstates, REACT KIN C, 66(2), 1999, pp. 311-317
Acid tetrabutylammonium salts of Ti(TV)-monosubstituted heteropolytungstate
, PW11TiO405-, show high catalytic activity in the oxidation of methyl phen
yl sulfide with hydrogen peroxide, while the corresponding tetrabutylammoni
um salts containing no protons are poor catalysts for this reaction.