Facile Regio- and Stereoselective Hydrometalation of Alkynes with a Combination of Carboxylic Acids and Group 10 Transition Metal Complexes: Selective Hydrogenation of Alkynes with Formic Acid
作者:Ruwei Shen、Tieqiao Chen、Yalei Zhao、Renhua Qiu、Yongbo Zhou、Shuangfeng Yin、Xiangbo Wang、Midori Goto、Li-Biao Han
DOI:10.1021/ja2069246
日期:2011.10.26
highly stereo- and regioselective hydrometalation of alkynes generating alkenylmetal complex is disclosed for the first time from a reaction of alkyne, carboxylic acid, and a zerovalent group10 transition metal complex M(PEt(3))(4) (M = Ni, Pd, Pt). A mechanistic study showed that the hydrometalation does not proceed via the reaction of alkyne with a hydridometal generated by the protonation of a
A Ni
<sup>0</sup>
σ‐Borane Complex Bearing a Rigid Bidentate Borane/Phosphine Ligand: Boryl Complex Formation by Oxidative Dehydrochloroborylation and Catalytic Activity for Ethylene Polymerization
作者:Falk William Seidel、Kyoko Nozaki
DOI:10.1002/anie.202111691
日期:2022.2
The synthesis of a rigid bidentate borane/phosphine ligand was explored within the background of statistical olefin copolymerization with group 10 metals. During this work, a mild oxidative dehydrochloroborylation reaction was found to convert different Ni0 σ-borane complexes into NiII boryl chloride complexes. This new ligand also allows the nickel catalyzed polymerization of ethylene, a first for
在统计烯烃与第 10 族金属共聚的背景下,探索了刚性二齿硼烷/膦配体的合成。在这项工作中,发现温和的氧化脱氯硼酸化反应可将不同的 Ni 0 σ-硼烷配合物转化为 Ni II氯化硼配合物。这种新的配体还允许乙烯的镍催化聚合,这是第 10 族烯烃聚合中的第一个 B 供体。
Stoichiometric and Catalytic Reactions of Thermally Stable Nickel(0) NHC Complexes
作者:Jianguo Wu、John W. Faller、Nilay Hazari、Timothy J. Schmeier
DOI:10.1021/om300045t
日期:2012.2.13
there are many organic reactions that are catalyzed by either Ni0 or Pd0 complexes, in comparison with the case for Pd0 there has been significantly less work studying coordinatively unsaturated Ni0 complexes. Here, we develop a simple synthetic route for preparing a number of thermally stable NHC-supported Ni0 hexadiene complexes in good yield. We examine the stoichiometric reactivity of one of these
The reaction of [NiL4](L = PEt3 or PBun3) with CO2 in toluene affords complexes of formula [Ni(CO2)L2], via the [Ni(CO2)L3] species. The reaction of [Ni(CO2)P(C6H11)3}2]·0.75C6H5Me with O2 to give (peroxocarbonato)-bis( tricyclohexylphosphine)nickel(II) is also reported.
[NiL 4 ](L = PEt 3或PBu n 3)与CO 2在甲苯中的反应通过[Ni(CO 2)L 3 ]物种提供式[Ni(CO 2)L 2 ]的配合物。还报道了[Ni(CO 2)P(C 6 H 11)3 } 2 ]·0.75C 6 H 5 Me与O 2的反应,生成(过氧羰基)-双(三环己基膦)镍(II)。