Activity and stereoselectivity of Ru-based catalyst bearing a fluorinated imidazolinium ligand.

Autor: Siano, Vincenzo, D'Auria, Ilaria, Grisi, Fabia, Costabile, Chiara, Longo, Pasquale
Zdroj: Central European Journal of Chemistry; Sep2011, Vol. 9 Issue 4, p605-609, 5p, 1 Chart, 6 Graphs
Abstrakt: Grubbs II generation catalyst ( 3), bearing a fluorinated imidazolinium ligand, was investigated in cross metathesis (CM), ring closing metathesis (RCM) and ring opening polymerization metathesis (ROMP) for a variety of substrates. Kinetic studies showed reduced stability of the catalyst in methylene chloride following the first 15 minutes of reaction preventing a higher efficiency despite the very high activity. Beneficial solvent effects on the catalyst stability were observed by performing RCM in CF. [Figure not available: see fulltext.] [ABSTRACT FROM AUTHOR]
Databáze: Complementary Index