Activation of olefin metathesis complexes containing unsymmetrical unsaturated N-heterocyclic carbenes by copper and gold transmetalation

Fadwa Kamal 1 Sophie Colombel-Rouen 1 Adrien Dumas 1 Jean-Paul Guégan 1 Thierry Roisnel 1 Vincent Dorcet 1 Olivier Baslé 1 Mathieu Rouen 2 Marc Mauduit 1
1 ISCR - Institut des Sciences Chimiques de Rennes
2 COBRA - Chimie Organique et Bioorganique : Réactivité et Analyse
Abstract : The activation of ruthenium-indenylidene complexes containing two unsymmetrical unsaturated N-heterocyclic carbenes (u2-NHCs) by a transmetalation process is reported. The use of copper(i) or gold(i) chlorides promotes the rapid trapping of one NHC ligand, which releases the catalytically active Ru-species. Impressive initiation rates with full-conversions are observed within one minute. This practical protocol demonstrates excellent catalytic performances in various ring-closing metathesis (RCM) and self-metathesis (SM) reactions.
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Journal articles
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https://hal-univ-rennes1.archives-ouvertes.fr/hal-02307034
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Submitted on : Monday, October 7, 2019 - 11:31:27 AM
Last modification on : Tuesday, November 12, 2019 - 5:01:03 PM

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UNIV-RENNES1 | ISCR | SCR-CD | UR1-UFR-SPM | INC-CNRS | INSA-ROUEN | UNIV-RENNES | UNIROUEN | COBRA | INSA-GROUPE | COMUE-NORMANDIE

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Fadwa Kamal, Sophie Colombel-Rouen, Adrien Dumas, Jean-Paul Guégan, Thierry Roisnel, et al.. Activation of olefin metathesis complexes containing unsymmetrical unsaturated N-heterocyclic carbenes by copper and gold transmetalation. Chemical Communications, Royal Society of Chemistry, 2019, 55 (77), pp.11583-11586. ⟨10.1039/c9cc05776e⟩. ⟨hal-02307034⟩

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