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Assessing the Scope of the Introduction of Schiff Bases as Co‐Ligands for Monometallic and Homobimetallic Ruthenium Ring‐Opening Metathesis Polymerisation and Ring‐Closing Metathesis Initiators
Author(s) -
De Clercq Bob,
Verpoort Francis
Publication year - 2002
Publication title -
advanced synthesis and catalysis
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.541
H-Index - 155
eISSN - 1615-4169
pISSN - 1615-4150
DOI - 10.1002/1615-4169(200208)344:6/7<639::aid-adsc639>3.0.co;2-0
Subject(s) - chemistry , ruthenium , metathesis , ring closing metathesis , schiff base , romp , ring opening metathesis polymerisation , catalysis , bimetallic strip , salt metathesis reaction , acyclic diene metathesis , combinatorial chemistry , polymer chemistry , polymerization , organic chemistry , polymer
A new class of homobimetallic and monometallic Schiff base‐substituted ruthenium olefin metathesis catalysts has been prepared, characterised and tested in ring‐closing metathesis (RCM) and ring‐opening metathesis polymerisation (ROMP) reactions. The results obtained point out that the synergy of Schiff base ligands with coordinatively labile ligands leads to bimetallic catalytic systems that combine very high activity with excellent stability. Furthermore, the catalytic activity of these catalysts is very dependent on the steric and electronic environment of the Schiff base. To conclude, a mechanism that explains the obtained data is postulated.