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- Liquid phase oxidation of xylenes catalyzed by the tripodal C-scorpionate iron(II) complex [FeCl2{κ3-HC(pz)(3)}]Publication . Mendes, Marta; Da Costa Ribeiro, Ana Paula; Alegria, Elisabete; Martins, Luisa; Pombeiro, ArmandoA simple and mild (room temperature) process for oxidation of o-, m- or p-xylene to the corresponding methylbenzyl alcohols, tolualdehydes and toluic acids, using H2O2 (30% aqueous solution) and the iron(II) C-scorpionate [FeCl2{κ3-HC(pz)3}] (pz = pyrazol-1-yl) catalyst is presented. Remarkably, after 5 min of reaction an overall oxygenates yield of 22% (TOF = 1.3 × 102 h−1) was obtained. The effects of reaction parameters, such as reaction time, temperature, amount of catalyst, type and amount of oxidant are reported and discussed.