Metal-Free Preparation of Cycloalkyl Aryl Sulfides<i>via</i>Di-<i>tert</i>-butyl Peroxide-Promoted Oxidative C(<i>sp</i><sup>3</sup>)H Bond Thiolation of Cycloalkanes
作者:Jincan Zhao、Hong Fang、Jianlin Han、Yi Pan、Guigen Li
DOI:10.1002/adsc.201400032
日期:2014.8.11
A concise thiolation of C(sp3)-Hbond of cycloalkanes with diaryl disulfides in the presence of oxidant of di-tert-butylperoxide (DTBP) has been developed. This reaction without using any of metal catalyst, tolerates varieties of disulfides and cycloalkanes substrates, giving good to excellent chemical yields, which provides a useful approach to cycloalkyl aryl sulfides from unactivated cycloalkanes
Microwave-Assisted Efficient Synthesis of Aryl Thioethers through C-H Functionalization of Arenes
作者:Chin-Fa Lee、Yi-Chen Liu
DOI:10.1055/s-0033-1339666
日期:——
Microwave-assisted iridium-catalyzed meta C-H borylation followed by copper-promoted C-S bond coupling reactions in one pot is reported. This approach enables the syntheses of aryl thioethers in short reaction times (within 2.5 hours). The system shows good functional-group compatibility, as chloro, trifluoromethyl, fluoro, and pyridine groups are tolerated by the reaction conditions. Both aryl and alkyl thiols are coupled smoothly. The products were formed with excellent regioselectivity in meta position.