of phenols under transition metal-free and solvent-free conditions has been developed. These reactions are operationally simple with employing air (molecular oxygen) as an ideal oxidant and can selectively provide mono- and dithiolation products in good to excellent yields under basic conditions. The reaction tolerates a broad range of aryl thiols and arenes and is especially applicable for large-scale
TBAI-mediated sulfenylation of arenes with arylsulfonyl hydrazides in DPDME
作者:Wei Yueting、Liu Yali、He Jing、Li Xuezhen、Liu Ping、Zhang Jie
DOI:10.1016/j.tet.2020.131646
日期:2020.11
An efficient TBAI (tetrabutylammonium iodide)-mediated C-H sulfenylation of arenes with arylsulfonyl hydrazides in dipropylene glycol dimethyl ether (DPDME) was described. Various electron-rich arenes were applicable in the reaction, such as naphthylamine, naphthol, aniline, indole, pyrrole, and imidaz o [1,2, 2(a)] pyridine. A wide range of the aryl sulfides were obtained with good functional group
Odorless, Regioselective Synthesis of Diaryl Sulfides and α-Thioaryl Carbonyls from Sodium Arylsulfinates <i>via</i>
a Metal- Free Radical Strategy in Water
作者:Ya-mei Lin、Guo-ping Lu、Gui-xiang Wang、Wen-bin Yi
DOI:10.1002/adsc.201600846
日期:2016.12.22
Regioselective arylthiolations of aromatic amines, arenols and ketones via C–H bond functionalization have been achieved with I2 and PPh3 in an aqueous system, whereby arylsulfenyl radicals are in situ generated from odorless sodium arylsulfinates. The arylsulfenyl radicals can react with free anilines containing electron‐withdrawing groups and complex substrates (estrone and progesterone). Further
Acid-induced chemoselective arylthiolations of electron-rich arenes in ionic liquids from sodium arylsulfinates: the reducibility of halide anions in [Hmim]Br
作者:Zhu-bing Xu、Guo-ping Lu、Chun Cai
DOI:10.1039/c6ob02823c
日期:——
An odorless approach for arylthiolations of arenes is introduced, in which [Hmim]Br is used as both a solvent and a reducer.