title: Intriguing substituent effect in modified Hoveyda-Grubbs metathesis catalysts incorporating a chelating iodo-benzylidene ligand.
abstract: A series of modified Hoveyda-Grubbs catalysts incorporating a chelating iodo-benzylidene ligand were prepared and characterized. The presence of electron-withdrawing ring substituents in the para position to the iodide was found to decrease the catalytic activity, revealing that dissociation of the Ru···I-Ar bond is not the rate-determining step.
authors.affiliation: Faculty of Chemistry, Warsaw University, Pasteura 1, 02-093, Warsaw, Poland. barbasiewicz@chem.uw.edu.pl
authors.forename: Michał
authors.initials: M
authors.lastname: Barbasiewicz
authors.forename: Krzysztof
authors.initials: K
authors.lastname: Błocki
authors.forename: Maura
authors.initials: M
authors.lastname: Malińska
authors.forename: Robert
authors.initials: R
authors.lastname: Pawłowski