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Ruthenium–Indenylidene Olefin Metathesis Catalyst with Enhanced Thermal Stability
Author(s) -
Kabro Anzhelika,
Roisnel Thierry,
Fischmeister Cédric,
Bruneau Christian
Publication year - 2010
Publication title -
chemistry – a european journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.687
H-Index - 242
eISSN - 1521-3765
pISSN - 0947-6539
DOI - 10.1002/chem.201001659
Subject(s) - dicyclopentadiene , ruthenium , ligand (biochemistry) , ring opening metathesis polymerisation , thermal stability , denticity , polymerization , catalysis , chemistry , metathesis , acyclic diene metathesis , salt metathesis reaction , ring closing metathesis , ring (chemistry) , polymer chemistry , organic chemistry , crystal structure , polymer , biochemistry , receptor
Two new ruthenium complexes bearing a bidentate (κ 2 O , C )‐isopropoxy–indenylidene ligand and a PPh 3 ( 9 ) or PCy 3 ( 10 , Cy=cyclohexyl) ligand have been synthesized and fully characterized by 1 H and 13 C NMR spectroscopy and X‐ray crystallography. Complex 10 displays a very high thermal stability with a half life of six days at 110 °C in [D 8 ]toluene. Complex 10 was evaluated in various ring‐closing metathesis reactions and ring‐opening metathesis polymerization of dicyclopentadiene, in which it showed a latent behavior with low activity at room temperature and high activity upon thermal activation.