Rotation-Triggered Transmetalation on a Heterobimetallic Cu/Al <i>N</i>-Phosphine-Oxide-Substituted Imidazolylidene Complex
作者:Takahiro Asada、Yoichi Hoshimoto、Sensuke Ogoshi
DOI:10.1021/jacs.0c03252
日期:2020.5.27
A novel strategy for the preparation of heterobimetallic N-heterocycliccarbene (NHC) complexes is demonstrated using N-phosphine-oxide-substituted imidazolylidenes (PoxIms). In these heterobimetallic Cu/Al complexes, the Cu and Al centers can be either completely separated or brought near each other via the rotation of the N-phosphinoyl group in the PoxIm ligands. Triggered by this rotation, transmetalation
N-heterocyclic carbene copper(<scp>i</scp>) catalysed N-methylation of amines using CO<sub>2</sub>
作者:Orlando Santoro、Faïma Lazreg、Yury Minenkov、Luigi Cavallo、Catherine S. J. Cazin
DOI:10.1039/c5dt03506f
日期:——
The N-methylation of amines using CO2 and PhSiH3 was efficiently catalysed by a N-heterocyclic carbene copper(i) complex.
使用CO2和PhSiH3对胺进行N-甲基化反应,可以高效地由N-杂环卡宾铜(i)配合物催化。
Synthesis of Conjugated Boron‐Enynes
<i>via cis‐</i>
Alkynylboration of Terminal Alkynes
作者:Kuan Li、Shang‐Hai Yu、Kai‐Feng Zhuo、Xi Lu、Bin Xiao、Tian‐Jun Gong、Yao Fu
DOI:10.1002/adsc.201900294
日期:2019.9.3
A unique and practical Cu‐catalyzed cis‐alkynylboration of terminal alkynes with diboron reagents and bromoalkynes has been realized. This process enables the convenient synthesis of a large variety of trisubstituted enynylboronates under mild reaction conditions with broad functional‐groups compatibility, high regioselectivity and stereoselectivity. The usability and practicability of this process
[(NHC)Cu<sup>I</sup>–ER<sub>3</sub>] Complexes (ER<sub>3</sub> = SiMe<sub>2</sub>Ph, SiPh<sub>3</sub>, SnMe<sub>3</sub>): From Linear, Mononuclear Complexes to Polynuclear Complexes with Ultrashort Cu<sup>I</sup>···Cu<sup>I</sup> Distances
作者:Jacqueline Plotzitzka、Christian Kleeberg
DOI:10.1021/acs.inorgchem.6b00210
日期:2016.5.16
the less demanding Me2IMe ligand, polynuclear, μ-ER3-bridged complexes with ultrashort Cu···Cu distances are observed. For the relatedcomplexes [(NHC)Cu–R′] no analogous complexes with bridging anionic ligands are realized. Instead, irrespective of the NHC ligand, linear coordinated copper complexes of different types are formed. 29Si heteronuclear solution NMR spectroscopic data on [(NHC)CuI–SiR3] exhibit