Electrochemical access to aryl sulfides from aryl thiols and electron-rich arenes with the potassium iodide as a mediator
作者:Xin Liu、Pengfei Niu、Jiali Jin、Zhenlu Shen、Meichao Li
DOI:10.1016/j.electacta.2019.135371
日期:2020.1
a low potential for the synthesis of aryl sulfides fromaryl thiols and electron-rich arenes has been developed. Cyclic voltammetry was carried out to investigate the electrocatalytic activity of KI for sulfenylation of 1,3,5-trimethoxybenzene. On the basis of in situ FTIR data, cyclic voltammetry and control experiments, the reaction mechanism involving redox chemistry of KI and generation of intermediate
A simple and an efficient procedure for the formation of diaryl sulfides via direct sp2 C–H functionalization have been developed from simple and readily available thiophenols and substituted methoxy benzenes. In this process thiophenols were used as the sulfur source. In this transformation broad range of functional groups were well tolerated in good to excellent yields.
An environmentally benign method for the synthesis of aryl sulfides in water under mild conditions has been realized, in which arenes are coupled with equal stoichiometry of allyl sulfides. This arylthiolation is enabled by the presence of the Lipshutz surfactant, TPGS-750-M, using water as the recyclable reaction medium.
Radical–Radical Cross-Coupling for C–S Bond Formation
作者:Zhiliang Huang、Dongchao Zhang、Xiaotian Qi、Zhiyuan Yan、Mengfan Wang、Haiming Yan、Aiwen Lei
DOI:10.1021/acs.orglett.6b00764
日期:2016.5.20
A new method was demonstrated to overcome the selectivity issue of radical–radical cross-coupling toward the synthesis of asymmetric diaryl thioethers. The preliminary mechanism was revealed by radical-trapping experiments, DFT calculations, and kinetics, etc., indicating that the C–S bond formed through cross-coupling of a thiyl radical and an aryl radical cation. Moreover, the formation of an aryl
A metal- and oxidant-free electrochemical synthesis of aryl sulfides was developed through a C–H sulfidation reaction of arenes and disulfides. Compared with traditional organic synthesis methods, this direct electrochemical approach efficiently generates aryl sulfides under catalyst- and oxidant-free conditions with the superiorities of wide substrate compatibility, mild reaction condition and waster