Synthesis of lanthanide(II)–imine complexes and their use in carbon–carbon and carbon–nitrogen unsaturated bond transformation
作者:Ken Takaki、Kimihiro Komeyama、Katsuomi Takehira
DOI:10.1016/j.tet.2003.06.003
日期:2003.12
1 quantitatively, the structure of which was characterized by X-ray analysis. The imine complexes 1 catalyzed dehydrogenativesilylation of terminal alkynes, hydrosilylation of imines and alkenes, and intermolecular hydrophosphination of alkynes. Moreover, dehydrogenative double silylation of conjugated dienes was achieved with 1.
A novel rhodium(I)-catalyzed hydrophosphination of terminalalkynes with diphosphines and hydrosilanes takes place regioselectively in the presence of small amounts of oxygen. After air-oxidation during workups, the corresponding anti-Markovnikov–type vinylic phosphine oxides were obtained in good yields.
Yb[bond]imine complex, [Yb(eta(2)-Ph(2)CNPh)(hmpa)(3)], to give alkenylphosphines and phosphine oxides after oxidative workup in good yields under mild conditions. This reaction is also applicable to various carbon[bond]carbon multiple bonds such as conjugated diynes and dienes, allenes, and styrene derivatives. Regio- and stereoselectivity and the scope and limitation of the present reaction clearly
Outer-Sphere Reactivity Shift of Secondary Phosphine Oxide-Based Nickel Complexes: From Ethylene Hydrophosphinylation to Oligomerization
作者:Rudy Lhermet、Emile Moser、Erwann Jeanneau、Hélène Olivier-Bourbigou、Pierre-Alain R. Breuil
DOI:10.1002/chem.201701414
日期:2017.6.1
A new dimension for secondary phosphine oxide (SPOs) ligands is described in this article. Demonstrated on original π‐allylic nickel structures, these self‐assembled complexes trigger catalytic hydrophosphinylation reactions. Addition of a Lewis acid B(C6F5)3 switches the reactivity towards migratory insertion and thus ethylene oligomerization through an unprecedented outer‐sphere interaction with
本文介绍了仲氧化膦(SPOs)配体的新尺寸。这些自组装的复合物在原始的π-烯丙基镍结构上得到证实,可引发催化的氢膦化反应。路易斯酸B(C 6 F 5)3的添加将反应性移向迁移插入,并因此通过与配位SPO配体的前所未有的外球相互作用而使乙烯低聚。NMR实验和X射线分析可以观察两性离子活性物质的形成及其降解途径。
Diphosphino-Functionalized MCM-41-Immobilized Rhodium Complex: A Highly Efficient and Recyclable Catalyst for the Hydrophosphinylation of Terminal Alkynes
作者:Fang Yao、Jian Peng、Wenyan Hao、Mingzhong Cai
DOI:10.1007/s10562-012-0781-9
日期:2012.6
this heterogeneous rhodium complex is a highlyefficient catalyst for the hydrophosphinylation of terminalalkynes with diphenylphosphine oxide and can be recovered and recycled by a simple filtration of the reaction solution and used for at least 10 consecutive trials without any decreases in activity.Graphical AbstractHydrophosphinylation of terminalalkynes using diphosphino-functionalized MCM-41-immobilized