Nickel-Catalyzed Sulfonylation of C(<i>sp</i><sup>2</sup>)-H Bonds with Sodium Sulfinates
作者:Shuang-Liang Liu、Xue-Hong Li、Shu-Sheng Zhang、Sheng-Kai Hou、Guang-Chao Yang、Jun-Fang Gong、Mao-Ping Song
DOI:10.1002/adsc.201700290
日期:2017.7.3
substrate scope and good functional group tolerance with high monosulfonylation selectivity. Besides arenes and heteroarenes, the reaction can also be extended to alkenes, providing diverse diaryl and alkylarylsulfones in high yields. Furthermore, a plausible Ni(I)/Ni(III) mechanism is outlined based on our experimental results and related precedents.
Palladium-Catalyzed Electrochemical C–H Bromination Using NH<sub>4</sub>Br as the Brominating Reagent
作者:Qi-Liang Yang、Xiang-Yang Wang、Tong-Lin Wang、Xiang Yang、Dong Liu、Xiaofeng Tong、Xin-Yan Wu、Tian-Sheng Mei
DOI:10.1021/acs.orglett.9b00629
日期:2019.4.19
palladium-catalyzed electrochemical C–H bromination of benzamide derivatives under divided cells is developed, in which NH4Br serves as a brominating reagent and electrolyte. The protocol avoids the use of chemical oxidants and provides an alternative method for the synthesis of aryl bromides.