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Research at St Andrews

Electronic effects in mixed N-heterocyclic carbene/phosphite indenylidene ruthenium metathesis catalysts

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  • Embargoed (until 5/07/20)

Author(s)

Yannick D. Bidal, César A. Urbina-Blanco, Albert Poater, David B. Cordes, Alexandra M. Z. Slawin, Luigi Cavallo, Catherine S. J. Cazin

School/Research organisations

Abstract

Five new complexes [RuCl2(SIMes)(Ind)(O-pXC5H4)] bearing different para-substituted triphenylphosphites (X = H, OCH3, CF3, Cl, SF5 and CN) were synthesised and used to study the effect of the electronic properties of the phosphite on olefin metathesis activity. Investigations of the physical properties of the new ligands and complexes were performed using physicochemical and DFT calculations. The catalytic activity of the complexes was benchmarked in challenging ring closing metathesis transformations featuring the formation of tetra-substituted double bonds. Complex [RuCl2(SIMes)(Ind)P(O-pCF3C5H4)3] (3c) exhibited a particularly high catalytic activity, superior to state-of-the-art catalysts, and was further tested on a wide range of substrates.
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Details

Original languageEnglish
Pages (from-to)11326-11337
Number of pages12
JournalDalton Transactions
Volume48
Issue number30
Early online date5 Jul 2019
DOIs
Publication statusPublished - 14 Aug 2019

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