Oxidation of thiols with molecular oxygen catalyzed by cobalt(ii) phthalocyanines in ionic liquidElectronic supplementary information (ESI) available: experimental. See http://www.rsc.org/suppdata/cc/b3/b305888c/

Abstract

An efficient procedure for catalyst solubility, recycling and easy product isolation in oxidation of thiols to disulfides with molecular oxygen catalyzed by cobalt(II) phthalocyanines dissolved in ionic liquid at room temperature is reported.

Reactions of half-sandwich Co(III) complexes with heterocyclic thione ligands: η2-N, S coordination mode and formation of S–S bond

“…Although lots of investigations involving thiol-disulfide interconversion by direct oxidation of molecular oxygen or metal-containing oxidants and catalytic oxidation in the presence of metal catalyst have been reported [33][34][35][36][37][38], disulfide bond formation at room temperature in the present of Cp * Co(CO)I 2 have not been mentioned or discussed. So our findings should be very interesting and valuable to be further investigated.…”

Highly Chemo‐ and Regioselective Reduction of Aromatic Nitro Compounds Catalyzed by Recyclable Copper(II) as well as Cobalt(II) Phthalocyanines

“…[16] Furthermore, they are used as catalysts for photo or oxidative degradation of pollutants and as photosensitizers for photodynamic therapy. [17] Recently, cobalt phthalocyanine has been used for the oxidation of thiols [18] and for the selective reduction of the double bond in flavones. [19] But to the best of our knowledge the catalytic potential of MPcs for selective reduction of the nitro group in the presence of other reducible functionalities has not been reported.…”

Highly Efficient and Green Oxidation of Nitrotoluenes with Dioxygen as Oxidant in a Novel Homogeneous and Recyclable Catalytic System

“…To overcome this problem, the introduction of substituents at the periphery of the molecule has to be made to make phthalocyanines soluble and suitable for homogeneous catalysis or heterogeneous catalysts may be obtained by dispersion and fixation of phthalocyanine complexes onto different supports. But these supported catalysts also often suffer from drawbacks such as lower activity than soluble catalysts due to either chemical or diffusional restrictions, easily oxidative degradation under oxidation conditions and lower stability of the catalyst in higher temperature [19,20]. Thus there has been a growing demand for the development of fundamentally new and environmentally benign catalytic systems using metal phthalocyanine complexes as catalyst that are operative on an industrial scale under moderate conditions in the liquid-phase with a high degree of selectivity.…”