Structural and theoretical studies of intermolecular dihydrogen bonding in [(C6F5)2(C6Cl5)B]–H⋯H–[TMP]
作者:Hasna Zaher、Andrew E. Ashley、Mark Irwin、Amber L. Thompson、Matthias J. Gutmann、Tobias Krämer、Dermot O'Hare
DOI:10.1039/c3cc45889j
日期:——
The product of the intermolecular âfrustrated Lewis pairâ (FLP) B(C6F5)2(C6Cl5)/2,2,6,6-tetramethylpiperidine and H2 has been studied by single-crystal neutron diffraction. This is the first structurally characterised example of a geometrically unconstrained dihydrogen (Hâ¯H) bond within a hydrogenated FLP system.
Novel B(Ar′)<sub>2</sub>(Ar′′) hetero-tri(aryl)boranes: a systematic study of Lewis acidity
作者:Robin J. Blagg、Trevor R. Simmons、Georgina R. Hatton、James M. Courtney、Elliot L. Bennett、Elliot J. Lawrence、Gregory G. Wildgoose
DOI:10.1039/c5dt03854e
日期:——
Nine homo- and hetero-tri(aryl)boranes related by stepwise aryl substitutions, are studied for H2 cleavage as part of an FLP, and comparative Lewis acidity/electrochemical measurements discussed.
[EN] PROCESS FOR PRODUCING METHANOL<br/>[FR] PROCÉDÉ DE FABRICATION DE MÉTHANOL
申请人:ISIS INNOVATION
公开号:WO2011045605A1
公开(公告)日:2011-04-21
The present invention relates to a novel process for the production of methanol. The process comprises the heterolytic cleavage of hydrogen by a frustrated Lewis pair comprising a Lewis acid and a Lewis base; and the hydrogenation of CO2 with the heterolytically cleaved hydrogen to form methanol.
Metal-Free Hydrogenation Catalyzed by an Air-Stable Borane: Use of Solvent as a Frustrated Lewis Base
作者:Daniel J. Scott、Matthew J. Fuchter、Andrew E. Ashley
DOI:10.1002/anie.201405531
日期:2014.9.15
Herein we report that the bulky Lewisacids B(C6Cl5)x(C6F5)3−x (x=0–3) are capable of heterolytic H2 activation in the strong‐donor solvent THF, in the absence of any additional Lewis base. This allows metal‐free catalytic hydrogenations to be performed in donor solvent media under mild conditions; these systems are particularly effective for the hydrogenation of weakly basic substrates, including the
近年来,“受阻路易斯对”(FLP)已被证明是许多不饱和底物氢化的有效无金属催化剂。即便如此,有限的官能团耐受性限制了可以进行 FLP 介导反应的溶剂范围,迄今为止报道的所有 FLP 介导的氢化反应都是在非供体烃或氯化溶剂中进行的。在此,我们报道了大体积的路易斯酸 B(C 6 Cl 5 ) x (C 6 F 5 ) 3− x ( x =0–3) 能够在强供体溶剂 THF 中杂解 H 2活化,在不存在的情况下任何额外的路易斯碱。这使得无金属催化氢化可以在温和条件下在供体溶剂介质中进行;这些系统对于弱碱性底物的氢化特别有效,包括呋喃杂环的无金属催化氢化的第一个例子。最有效的硼烷 B(C 6 Cl 5 )(C 6 F 5 ) 2的空气稳定性使其成为一种实用简单的反应方法。
Separating Electrophilicity and Lewis Acidity: The Synthesis, Characterization, and Electrochemistry of the Electron Deficient <i>Tris</i>(aryl)boranes B(C<sub>6</sub>F<sub>5</sub>)<sub>3–<i>n</i></sub>(C<sub>6</sub>Cl<sub>5</sub>)<sub><i>n</i></sub> (<i>n</i> = 1–3)
作者:Andrew E. Ashley、Thomas J. Herrington、Gregory G. Wildgoose、Hasna Zaher、Amber L. Thompson、Nicholas H. Rees、Tobias Krämer、Dermot O’Hare
DOI:10.1021/ja205037t
日期:2011.9.21
removed under vacuum or in the presence of molecular sieves, B(C(6)Cl(5))(3) (6) is completely stable to refluxing toluene/H(2)O for several days. Compounds3, 5, and 6 have been structurally characterized using single crystal X-ray diffraction and represent the first structuredeterminations for compounds featuring B-C(6)Cl(5) bonds; each exhibits a trigonal planar geometry about B, despite having different