Aerobic oxidation of thiols to disulfides under ball-milling in the absence of any catalyst, solvent, or base
作者:Tanmay Chatterjee、Brindaban C. Ranu
DOI:10.1039/c3ra41996g
日期:——
An efficient aerobic chemoselective oxidation of thiols to disulfides has been achieved under ball-milling over neutral aluminium oxide (grinding auxiliary) in the absence of any catalyst, co-oxidant, solvent, or base. A wide variety of functionalized diaryl, diheteroaryl and dialkyl disulfides have been obtained in high yields.
A visible-light photoredox cleavage of α-allenylic C–O bond and alkenyl C–Sformation is disclosed for the first time. The thiolation of allenyl phosphine oxides with diaryldisulfides occurs smoothly in metal-free and mild conditions, affording novel S,P-bifunctionalized butadienes with moderate to excellent yields. Mechanistic studies explain the cleavage of a C(sp3)–O(Ar) bond in initiating a key
Copper‐Promoted Thiolation of C(sp
<sup>2</sup>
)–H Bonds Using a 2‐Amino Alkylbenzimidazole Directing Group
作者:Shuang‐Liang Liu、Xue‐Hong Li、Tan‐Hao Shi、Guang‐Chao Yang、Hai‐Li Wang、Jun‐Fang Gong、Mao‐Ping Song
DOI:10.1002/ejoc.201700147
日期:2017.4.26
by using 2-amino alkylbenzimidazole (MBIP amine) as a new and removable N,N-bidentate directing group. This strategy gives a variety of functionalized thioethers in moderate to excellent yields in a simple and efficient way. Importantly, the substrate scope is not limited to aromaticamides; diverse alkenyl amides are also compatible. Furthermore, this synthetic approach provides a potentially feasible
Catalyst-free <i>gem</i>-chlorosulfurization of difluoromethyl-substituted diazo compounds with disulfide and PhICl<sub>2</sub>
作者:Jiuling Li、Bin Li、Juan Chen、Xinyu Jia、Min Wang、Chengjun Hao、Xinhua Zheng、Hongmei Dai、Wenhao Hu
DOI:10.1039/d1ob01422f
日期:——
A series of gem-chlorosulfurization products bearing difluoromethyl substituents were synthesized from TsCF2CHN2, disulfides and PhICl2 under mild conditions, which could be efficiently converted to multi-component products by a facile operation.