An efficient and practical thiocarbonyl surrogate via combination of potassium sulfide and chloroform was established. A variety of dithiocarbamates were afforded along with four new chemical bond formations in a one-pot reaction in which the thiocarbonyl motif was generated in situ. Furthermore, these readily accessed molecules showed promising activity against HDAC8, opening a potential gateway to
Intramolecular Assistance of Electron Transfer from Heteroatom Compounds. Electrochemical Oxidation of 2-(2-Pyridyl)ethyl-Substituted Ethers, Sulfides, and Selenides
作者:Mitsuru Watanabe、Seiji Suga、Jun-ichi Yoshida
DOI:10.1246/bcsj.73.243
日期:2000.1
Organoheteroatom compounds having a 2-(2-pyridyl)ethyl group were synthesized and their oxidation potentials were determined by rotating disk electrode voltammetry. The oxidation potentials were found to be less positive than those of the corresponding compounds having a phenyl group in place of the pyridyl group. The dynamic coordination of the pyridyl group to the heteroatom, which stabilizes the
合成了具有 2-(2-吡啶基)乙基的有机杂原子化合物,并通过旋转圆盘电极伏安法测定了它们的氧化电位。发现氧化电位低于具有苯基代替吡啶基的相应化合物的氧化电位。吡啶基与杂原子的动态配位稳定了阳离子自由基中间体,似乎是促进电子转移的原因。分子内辅助的量级随着母体化合物氧化电位的增加而增加。这种趋势可以用吡啶氮的非键合 p 轨道和母体杂原子化合物的 HOMO 之间的能量匹配来解释。
Transition Metal Photoredox Catalysis of Radical Thiol-Ene Reactions
作者:Elizabeth L. Tyson、Michael S. Ament、Tehshik P. Yoon
DOI:10.1021/jo3020825
日期:2013.3.1
We describe the anti-Markovnikov hydrothiolation of olefins using visible-light-absorbing transitionmetal photocatalysts. The key thiyl radical intermediates are generated upon quenching of photoexcited Ru*(bpz)32 with a variety of thiols. The adducts of a wide variety of olefins and thiols are formed in excellent yield (73–99%).
Towards Uniform Iodine Catalysis: Intramolecular C−H Amination of Arenes under Visible Light
作者:Claudio Martínez、Alexandra E. Bosnidou、Simon Allmendinger、Kilian Muñiz
DOI:10.1002/chem.201602138
日期:2016.7.11
photochemical catalytic amination of arenes is presented. The reaction proceeds under benign iodine catalysis in the presence of visiblelight as the initiator and provides access to a range of differently substituted arylamines. A total of 29 examples demonstrate the broad applicability of this mild oxidation method. The scope of the reaction could further be expanded to silyl‐tethered derivatives, which
Copper-catalyzed thiocarbonylation and thiolation of alkyl iodides
作者:Qingqiang Tian、Rongjing Sun、Yahui Li
DOI:10.1039/d2ob00008c
日期:——
the present study, an efficient Cu-catalyzed transthiolation of alkyliodides is developed. Notably, in the presence of CO, thioesters could also be obtained with copper and cobalt as the co-catalyst. This transformation displayed good functional group tolerance and afforded thioesters or sulfides from the corresponding alkyliodides.
在本研究中,开发了一种有效的 Cu 催化烷基碘的转硫醇化。值得注意的是,在 CO 存在下,硫酯也可以用铜和钴作为助催化剂来获得。这种转化表现出良好的官能团耐受性,并从相应的烷基碘中得到硫酯或硫化物。