Provided herein are nickel(O) catalysts that are stable when exposed to air and can be used to catalyze the formation of a C-C, C-O, or C-N bond.
提供于此的镍(0)催化剂在暴露于空气时稳定,并且可用于催化形成C-C、C-O或C-N键。
Deoxygenative C–C Bond-Forming Processes via a Net Four-Electron Reductive Coupling
作者:David P. Todd、Benjamin B. Thompson、Alex J. Nett、John Montgomery
DOI:10.1021/jacs.5b08448
日期:2015.10.14
The nickel-catalyzed coupling of enones or enals with alkynes in the presence of silane and titanium alkoxide reductants provides direct access to skipped diene products. The process involves a net four-electron reductive coupling and proceeds with deoxygenation of the starting enone or enal. A new class of well-defined nickel(0) precatalysts bearing an unhindered N-heterocyclic carbene ligand, which
Cyclometalated Pd(<scp>ii</scp>) and Ir(<scp>iii</scp>) 2-(4-bromophenyl)pyridine complexes with N-heterocyclic carbenes (NHCs) and acetylacetonate (acac): synthesis, structures, luminescent properties and application in one-pot oxidation/Suzuki coupling of aryl chlorides containing hydroxymethyl
作者:Chen Xu、Hong-Mei Li、Zhi-Qiang Xiao、Zhi-Qiang Wang、Si-Fu Tang、Bao-Ming Ji、Xin-Qi Hao、Mao-Ping Song
DOI:10.1039/c4dt00833b
日期:——
2-(4-bromophenyl)pyridine (bpp) complexes [Pd(bpp)(NHC)Cl] 1–3, [Pd(bpp)(acac)] 4, cyclometalated iridium(III) complexes [Ir(bpp)2Cl]25 and [Ir(bpp)2(acac)] 6 have been synthesized and characterized. Their detailed structures have been determined by X-ray diffraction and many intermolecularC–H⋯X (Cl, Br, π) and π⋯π interactions were found in their crystals. Cyclometalatedcomplexes 1–4 and 6 exhibit luminescence
Anionic and zwitterionic copper(i) complexes incorporating an anionic N-heterocyclic carbene decorated with a malonate backbone: synthesis, structure and catalytic applications
作者:Vincent César、Cécile Barthes、Yoann C. Farré、Stéphane V. Cuisiat、Bernard Y. Vacher、Rémy Brousses、Noël Lugan、Guy Lavigne
DOI:10.1039/c3dt32919d
日期:——
The anionic malonate-derived N-heterocycliccarbenes (maloNHCs) react cleanly and rapidly with copper chloride to generate the anioniccomplexes of type [(maloNHC)CuCl]·Li, which crystallize in the solid state either in an oligomeric trimer arrangement or in polymeric helixes depending on the substitution pattern and the solvent. Ten zwitterionic heteroleptic Cu(I) complexes combining the anionic maloNHC
Cyclometalated 2-Phenylimidazole Palladium Carbene Complexes in the Catalytic Suzuki–Miyaura Cross-Coupling Reaction
作者:Maik Micksch、Mario Tenne、Thomas Strassner
DOI:10.1021/om5004336
日期:2014.8.11
We present the syntheses of 12 cyclometalatedpalladium C∧N 2-phenylimidazole carbene complexes with different N-1 groups as well as different substituents at the C-2 phenyl group of the cyclometalating imidazole. We investigated the influence of these substituents by comparing the catalytic performance of the complexes in the Suzuki–Miyaura cross-coupling reaction of aryl chlorides. We can show a