Environmentally benign and selective synthesis of hybrid pyrazole sulfoxide and sulfone ligands

Abstract

Josefi na Pons et al. Environmentally benign and selective synthesis of hybrid pyrazole sulfoxide and sulfone ligands

Study of the electrochemical oxidation of 4,6-dimethyldibenzothiophene on a BDD electrode employing different techniques

“…Other authors have described the effect of the presence of traces of water in organic solvents during the electrochemical oxidation or reduction of organic compounds [51]. The selective electrochemical oxidations of some thioethers to sulfoxides or sulfones [27], as well as to sulfone ligands [26], using organic-aqueous mixtures have also been reported. However, no previous studies have been focused on the study of the electrochemical oxidation of 4,6-DMDBT (in a concentration range from 1.5 to 27 mg L -1 ) by DPV and the elucidation of the degradation kinetics, which is described in following subsections.…”

“…In some cases, selective electrochemical oxidation is favored when the study is carried out in a mixture of solvents. The quantity of water in the organic solvent [26], as well as the applied oxidation potential, have high influence on the selectivity. Using continuous-flow microreactors, the selective electrochemical conversion of a wide variety of thioethers to sulfoxides or sulfones in the presence of water has been shown to be only governed by the applied potential [27].…”