Chromium(III) and indium(III) 3,6-di-tert-butyl-o-semiquinolate complexes as redox mediators of hydrogen sulfide oxidation in reactions with cycloalkanes
作者:N. T. Berberova、E. V. Shinkar、I. V. Smolyaninov、A. V. Shvetsova、D. B. Sediki
DOI:10.1134/s107032841707003x
日期:2017.9
indium(III) complexes with 3,6-di-tert-butyl-o-semiquinolate leading to the formation of active monocationic species is studied by cyclic voltammetry. The reactions of the latter with hydrogen sulfide generate the radical cation of H2S, whose fragmentation affords the proton and thiyl radical. These complexes are proposed for the first time as redox mediators for the one-pot thiolation of inert cycloalkanes C6–C8
铬(III)和氧化铟(III)络合物的电化学氧化用3,6-二-叔丁基- Ò -semiquinolate导致形成活性单阳离子物种是通过循环伏安法研究。后者与硫化氢的反应产生H 2 S的自由基阳离子,其裂解产生质子和硫代自由基。首次提出这些配合物作为惰性环烷烃C 6 -C 8的单锅硫醇化的氧化还原介体,与直接电化学氧化相比,它降低了硫化氢的活化能。涉及H 2的环烷烃官能化的主要产物S是硫醇以及有机二硫化物和三硫化物。合成化合物的产率取决于介体的类型:铬(III)配合物在电催化转化中显示出最高的效率。