Highly Active Ruthenium Catalysts for Olefin Metathesis: The Synergy of N‐Heterocyclic Carbenes and Coordinatively Labile Ligands

Autor:	Dieter Gleich, Wolfgang A. Herrmann, Florian J. Kohl, Wolfgang Hieringer, Thomas Weskamp
Rok vydání:	1999
Předmět:	Ligand Transition metal carbene complex chemistry.chemical_element Homogeneous catalysis General Chemistry ROMP Metathesis Combinatorial chemistry Catalysis Ruthenium chemistry.chemical_compound chemistry Organic chemistry Ring-opening metathesis polymerisation Carbene
Zdroj:	Angewandte Chemie International Edition. 38:2416-2419
ISSN:	1521-3773 1433-7851
DOI:	10.1002/(sici)1521-3773(19990816)38:16<2416::aid-anie2416>3.0.co;2-#
Popis:	Two N-heterocyclic carbene ligands at once may be one too many, at least if you intend to have highly active ruthenium catalysts for olefin metathesis. Density functional calculations recommend the replacement of the second carbene ligand in the successful ROMP catalysts 1 by coordinatively more labile ligands as in 2 or 3. In both cases, the catalytic activity is greatly improved.
Databáze:	OpenAIRE
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