883733-77-5Relevant academic research and scientific papers
Promoting Frustrated Lewis Pairs for Heterogeneous Chemoselective Hydrogenation via the Tailored Pore Environment within Metal–Organic Frameworks
Niu, Zheng,Zhang, Weijie,Lan, Pui Ching,Aguila, Briana,Ma, Shengqian
, p. 7420 - 7424 (2019)
Frustrated Lewis pairs (FLPs) have recently been advanced as efficient metal-free catalysts for catalytic hydrogenation, but their performance in chemoselective hydrogenation, particularly in heterogeneous systems, has not yet been achieved. Herein, we demonstrate that, via tailoring the pore environment within metal–organic frameworks (MOFs), FLPs not only can be stabilized but also can develop interesting performance in the chemoselective hydrogenation of α,β-unsaturated organic compounds, which cannot be achieved with FLPs in a homogeneous system. Using hydrogen gas under moderate pressure, the FLP anchored within a MOF that features open metal sites and hydroxy groups on the pore walls can serve as a highly efficient heterogeneous catalyst to selectively reduce the imine bond in α,β-unsaturated imine substrates to afford unsaturated amine compounds.
FRUSTRATED LEWIS PAIR-IMPREGNATED POROUS MATERIALS AND USES THEREOF
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Page/Page column 85; 92, (2021/01/23)
Described herein are compositions composed of frustrated Lewis pairs impregnated in porous materials such as, for example, metal-organic frameworks, and their uses thereof. These compositions may allow new applications of frustrated Lewis pairs in catalysis by sequestering and protecting the frustrated Lewis pair within the nanospace of the porous material. Also provided are methods of hydrogenating an organic compound having at least one unsaturated functional group comprising using the compositions described herein.
Expanding the scope of metal-free catalytic hydrogenation through frustrated Lewis pair design
Eros, Gabor,Mehdi, Hasan,Papai, Imre,Rokob, Tibor Andras,Kiraly, Peter,Tarkanyi, Gabor,Soos, Tibor
supporting information; experimental part, p. 6559 - 6563 (2010/10/20)
No metal causes frustration: Based on a conceptual framework, novel frustrated Lewis acid-base catalyst systems with orthogonal reactivity have been developed. Aside from enhanced functional-group tolerance, unique chemoselectivity can be achieved in catalytic metal-free hydrogenations (see scheme).
An estimate of the reduction potential of B(C6F 5)3 from electrochemical measurements on related mesityl boranes
Cummings, Sarah A.,Iimura, Masanori,Harlan, C. Jeff,Kwaan, Rebecca J.,Vu Trieu, Isabelle,Norton, Jack R.,Bridgewater, Brian M.,Jaekle, Frieder,Sundararaman, Anand,Tilset, Mats
, p. 1565 - 1568 (2008/10/09)
MesB(C6F5)2 (1) has been prepared from MesMgBr and FB(C6F5)2·OEt2, while Mes2B(C6F5) (2) is readily available from CuC6F5 and Mes2BBr. The reduction potential E? of 1 vs Cp2Fe0/+ in THF is -1.72 V, while that of 2 is -2.10 V, and that of Mes3B (3) is -2.73 V. 11B and 1H NMR show that neither 1 nor 2 binds THF significantly. These results have been used to estimate the reduction potential of B(C6F5)3 in THF as -1.17 V vs Cp 2Fe0/+ or as -0.64 V vs SCE.
