Monomeric and dendritic second generation Grubbs- and Hoveyda–Grubbs-type catalysts for olefin metathesis

Autor:	Bert Klein Gebbink, Niels J. M. Pijnenburg, Kimberley E. Mayland, Eder Tomás-Mendivil, Henk Kleijn, Gerard van Koten, Anthony L. Spek, Martin Lutz
Rok vydání:	2014
Předmět:	Solid-state chemistry Olefin metathesis chemistry.chemical_element Catalysis Ruthenium Inorganic Chemistry chemistry.chemical_compound Monomer Ring-closing metathesis chemistry Dendrimer Polymer chemistry Materials Chemistry Ring-opening metathesis polymerisation Physical and Theoretical Chemistry
Zdroj:	Inorganica Chimica Acta. 409:163-173
ISSN:	0020-1693
DOI:	10.1016/j.ica.2013.06.018
Popis:	The synthesis and characterization of monomeric and dendritic Grubbs II and Hoveyda-Grubbs II-based complexes are reported. These complexes were synthesized via a route based on the connection of monomeric or dendritic N-alkyl-N′-mesitylimidazol-2-ylidene pre-ligands to Grubbs I or Hoveyda-Grubbs I complexes. The immobilization of a modified Grubbs II type catalyst on a G0 carbosilane dendrimer was successfully carried out. Together with monomeric Grubbs II and Hoveyda-Grubbs-analogs and several commercially available olefin metathesis catalysts, the soluble, homogeneous G0-dendritic Grubbs II complex was tested as catalyst in the ring closing metathesis of diethyl diallylmalonate. The immobilized complex proved to outperform its monomeric analog in this reaction at room temperature, whereas it was found to be slightly slower at reflux temperature. © 2013 Elsevier B.V. All rights reserved.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::ea3a80398443285e8c3d588c8e103a49 https://doi.org/10.1016/j.ica.2013.06.018 Zobrazit plný text záznamu Full Text from ScienceDirect