Metal-free carbon dioxide reduction and acidic C-H activations using a frustrated Lewis pair

被引：57

作者：

Tran, Sophia D. ^{[1
]}

Tronic, Tristan A. ^{[1
]}

Kaminsky, Werner ^{[1
]}

Heinekey, D. Michael ^{[1
]}

Mayer, James M. ^{[1
]}

机构：

[1] Univ Washington, Dept Chem, Seattle, WA 98195 USA

来源：

INORGANICA CHIMICA ACTA | 2011年 / 369卷 / 01期

基金：

美国国家科学基金会;

关键词：

Frustrated Lewis pair; Carbon dioxide; Methane; Acidic C-H activation; POLYMERIZATION; REACTIVITY; CATALYSTS; METHANOL; GAS; CO2;

D O I：

10.1016/j.ica.2010.12.022

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

Activation of CO2 and acidic C-H bonds by the lutidine-tris(pentafluorophenyl) borane [Lut/B(C6F5)(3)] frustrated Lewis pair (FLP) are described (lutidine = 2,6-dimethylpyridine). Lut/B(C6F5)(3) reacts with CO2 and H-2 at ambient temperature and 4 atm of pressure to form the lutidinium boro-formate salt [LutH(+)][HC(=O)OB(C6F5)(3)]. This salt has been fully characterized including an X-ray crystal structure and independent synthesis from formic acid and Lut/B(C6F5)(3). Attempts to activate a C-H bond in methane by Lut/B(C6F5)(3), analogous to its heterolytic cleavage of H-2, were unsuccessful, which are consistent with published calculations showing significant barriers to this reaction. Lut/B(C6F5)(3) does react with more acidic C-H bonds, including acetone and nitroalkanes. With nitromethane, the boro-nitrone anion H2C=NO2B(C6F5)(3) is formed, as indicated by NMR and mass spectral analyses. (C) 2010 Elsevier B.V. All rights reserved.

引用

页码：126 / 132

页数：7

共 38 条

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