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Issue 23, 2013
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Expanding the scope of metathesis: a survey of polyfunctional, single-site supported tungsten systems for hydrocarbon valorization

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Abstract

Olefin metathesis is increasingly incorporated in polyfunctional industrial processes. The classical WO3/SiO2 olefin metathesis catalyst is combined to other catalysts in order to afford higher added-value chemicals. However, the combination of several reactions, not only in a single reactor, but also stemming from a single, multifunctional surface species is a desirable improvement regarding process issues. Well-defined surface organometallic tungsten species can be designed to implement targeted functionalities (carbene, hydride, alkyl, …). By tuning the metal's coordination sphere, it is possible to combine metathesis with several reactions, such as (de)hydrogenation, dimerization or isomerization. Novel, unconventional reactions for the production and upgrading of alkanes and alkenes have thus been uncovered. The reactivity of this library of supported catalysts is discussed based on the type of mediated transformations: monofunctional (alkene and alkyne metathesis), bifunctional (1-butene or 2-butenes to propylene), trifunctional (ethylene to propylene, alkane metathesis, …). Mechanistic considerations will be discussed to put these results in a wider perspective for future developments.

Graphical abstract: Expanding the scope of metathesis: a survey of polyfunctional, single-site supported tungsten systems for hydrocarbon valorization

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Publication details

The article was received on 22 Mar 2013 and first published on 14 Aug 2013


Article type: Review Article
DOI: 10.1039/C3CS60115C
Citation: Chem. Soc. Rev., 2013,42, 9035-9054
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    Expanding the scope of metathesis: a survey of polyfunctional, single-site supported tungsten systems for hydrocarbon valorization

    N. Popoff, E. Mazoyer, J. Pelletier, R. M. Gauvin and M. Taoufik, Chem. Soc. Rev., 2013, 42, 9035
    DOI: 10.1039/C3CS60115C

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