Palladium-Catalyzed Decarboxylative Methylthiolation of Aromatic Carboxylic Acids by Using DMSO as the Sulfurizing Reagent
作者:Zhengjiang Fu、Zhaojie Li、Qiheng Xiong、Hu Cai
DOI:10.1002/ejoc.201403147
日期:2014.12
By using simple and readily available DMSO as a convenient and environmentally friendly source of sulfur, a practical approach for the Pd-catalyzed decarboxylativemethylthiolation of 2-nitrobenzoic acids was developed. A range of substituents on the aryl group of the ortho-nitrobenzoic acid were compatible with this process.
A novel copper-catalyzed decarboxylative methylthiolation of arenecarboxylate salts has been realized using DMSO as the methylthiolation source. Various potassium arylcarboxylates underwent decarboxylative methylthiolation under air to furnish the corresponding aryl methyl thioethers in moderate to excellent yields. The reaction tolerated a wide variety of functional groups. Notably, the synthesis
The present invention provides compounds, compositions thereof, and methods of using the same for the inhibition of TYK2, and the treatment of TYK2-mediated disorders.