Ni-Catalyzed cross-coupling of aryl thioethers with alkyl Grignard reagents <i>via</i> C–S bond cleavage
作者:Dan Zhu、Lei Shi
DOI:10.1039/c8cc03665a
日期:——
A Ni-catalyzed cross-coupling of aryl thioethers with alkyl Grignardreagents, accompanied by the cleavage of the C(aryl)–SMe bond, has been presented. This method is distinguished by its mild conditions and moderate functional group tolerance, such as hydroxyl, halogen, and heterocycles, which should provide a straightforward access to the modification of sulfur-containing molecules.
Photoinduced Nucleophilic Substitution of Aryl Halides with Potassium Thioacetate – A One-Pot Approach to Aryl Methyl and Diaryl Sulfides
作者:Luciana C. Schmidt、Valentina Rey、Alicia B. Peñéñory
DOI:10.1002/ejoc.200500955
日期:2006.5
Aryl methyl sulfides and diaryl sulfides were prepared by photoinduced reactions of potassium thioacetate with arylhalides under entrainment conditions. Without isolation, the arene thiolates obtained by the aromatic substitution were quenched with methyl iodide to afford the aryl methyl sulfides in 26–59 % yields in a “one-pot” procedure together with the diaryl sulfides in variable yields (3–31 %)
An iridium-catalyzed acylmethylation and a rhodium-catalyzed amidation of naphthalene derivatives are reported, adopting sulfoxonium ylides and dioxazolones as carbene and nitrene transfer agents, respectively. The use of SMe group as a directing group was key to ensure the peri-selective functionalization, and it can be easily removed or diversely transformed to other synthetically useful functionalities
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-Mediated Reduction of Sulfoxides to Sulfides
作者:Fumiya Takahashi、Keisuke Nogi、Hideki Yorimitsu
DOI:10.1002/ejoc.202000222
日期:2020.5.29
An efficient and operationally simple method for the reduction of sulfoxides to sulfides using bis(catecholato)diboron as a reducing agent is described. This user‐friendly protocol is characterized by high functional group tolerance and easy purification process.
A visible-light photocatalytic thiolation of aryl, heteroaryl and vinyl iodides
作者:M. L. Czyz、G. K. Weragoda、R. Monaghan、T. U. Connell、M. Brzozowski、A. D. Scully、J. Burton、D. W. Lupton、A. Polyzos
DOI:10.1039/c8ob00238j
日期:——
The general catalytic synthesis of aryl and vinyl thioethers from readily available halides remains a challenge. Herein we report a unified method for the thiolation of aryl and vinyl iodides with dialkyl disulfides using visible light photoredox catalysis. A range of thioether products bearing diverse functional groups can be accessed in high yield and with excellent chemoselectivity. We demonstrate