Da Costa Ribeiro, Ana PaulaMartins, LuisaHAZRA, SUSANTAPombeiro, Armando2016-03-112016-03-112015-07RIBEIRO, Ana P. C.; [et al.] - Catalytic oxidation of cyclohexane with hydrogen peroxide and a tetracopper(II) complex in an ionic liquid. Comptes Rendus Chimie. ISSN.1631-0748 . Vol. 18, N.º 7 (2015), pp. 758-7651631-07481878-1543http://hdl.handle.net/10400.21/5831The catalytic peroxidative oxidation (with H2O2) of cyclohexane in an ionic liquid (IL) using the tetracopper(II) complex [(CuL)2(μ4-O,O′,O′′,O′′′-CDC)]2·2H2O [HL = 2-(2-pyridylmethyleneamino)benzenesulfonic acid, CDC = cyclohexane-1,4-dicarboxylate] as a catalyst is reported. Significant improvements on the catalytic performance, in terms of product yield (up to 36%), TON (up to 529), reaction time, selectivity towards cyclohexanone and easy recycling (negligible loss in activity after three consecutive runs), are observed using 1-butyl-3-methylimidazolium hexafluorophosphate as the chosen IL instead of a molecular organic solvent including the commonly used acetonitrile. The catalytic behaviors in the IL and in different molecular solvents are discussed.engTetranuclear copper complexCatalysisAlkane functionalizationPeroxidative oxidation of cyclohexaneIonic liquidElectrochemistryIonic conductivityjournal article10.1016/j.crci.2015.03.018