Rhodium-Catalyzed, Remote Terminal Hydroarylation of Activated Olefins through a Long-Range Deconjugative Isomerization
作者:Arun Jyoti Borah、Zhuangzhi Shi
DOI:10.1021/jacs.8b03560
日期:2018.5.16
The Rh-catalyzed, remote terminal hydroarylation of active olefins at the C7-position of indoles and the ortho-position of indolines and anilines with the appropriate choice of a N-P tBu2 directinggroupthrough long-range deconjugative isomerization has been reported. This transformation not only overcomes the conjugate rule of Michael acceptors but also controls the positional selectivity of indoles
The Rh-catalyzed, remote terminal hydroarylation of active olefins at the C7-position of indoles and the ortho-position of indolines and anilines with the appropriate choice of a NP tBu2 directing group through long-range deconjugative isomerization has been reported. 这种转变不仅克服了迈克尔受体的共轭规则,而且还控制了吲哚的位置选择性,代表了烯烃异构化和吲哚的 CH 烷基化的重大进步。
P<sup>III</sup>
-Chelation-Assisted Indole C7-Arylation, Olefination, Methylation, and Acylation with Carboxylic Acids/Anhydrides by Rhodium Catalysis
作者:Xiaodong Qiu、Panpan Wang、Dingyi Wang、Minyan Wang、Yu Yuan、Zhuangzhi Shi
DOI:10.1002/anie.201813182
日期:2019.1.28
olefination, and methylation of indoles with carboxylic acids or anhydrides by C−H and C−C bond activation have been developed. Furthermore, C7‐acylation products can also be generated selectively at a lower reaction temperature in the developed system. The key to the high reactivity and regioselectivity of this transformation is the appropriate choice of an indole N‐PtBu2 chelation‐assisted group
C–H activation of benzene by platinum(II) complexes with cyclometalated phosphine ligands
作者:Kyle A. Grice、Werner Kaminsky、Karen I. Goldberg
DOI:10.1016/j.ica.2010.11.021
日期:2011.4
phosphine and C–H bond activation at an sp 2 carbon of the ligand with the release of methane takes place to form the PC cyclometalated products [(PC)PtMe(SMe 2 )] ( 3 or 4 , respectively). The cyclometalated complexes 3 and 4 have both been characterized by X-ray crystallography. Complexes 3 and 4 were each observed to undergo intermolecular activation of arene C–H bonds. Upon thermolysis in benzene, complexes
Electrochemical oxidative N–H/P–H cross-coupling with H<sub>2</sub> evolution towards the synthesis of tertiary phosphines
作者:Yong Yuan、Xue Liu、Jingcheng Hu、Pengjie Wang、Shengchun Wang、Hesham Alhumade、Aiwen Lei
DOI:10.1039/d1sc07248j
日期:——
Tertiaryphosphines(III) find widespread use in many aspects of synthetic organic chemistry. Herein, we developed a facile and novel electrochemical oxidative N–H/P–H cross-coupling method, leading to a series of expected tertiaryphosphines(III) under mild conditions with excellent yields. It is worth noting that this electrochemical protocol features very good reaction selectivity, where only a 1 : 1
叔膦( III )在合成有机化学的许多方面都有广泛的用途。在此,我们开发了一种简便且新颖的电化学氧化N-H/P-H交叉偶联方法,在温和的条件下以优异的产率产生了一系列预期的叔膦( III )。值得注意的是,该电化学方案具有非常好的反应选择性,反应中仅需要胺和磷化氢的比例为1:1。此外,该电化学协议被证明是实用且可扩展的。机理分析表明 P 自由基参与了该反应。