Highly recoverable pyridinium-tagged Hoveyda–Grubbs pre-catalyst for olefinmetathesis. Design of the boomerang ligand toward the optimal compromise between activity and reusability†
Abstract
Whereas the boomerang ligand of Hoveyda–Grubbs pre-catalysts can be modified by attachment of a pyridinium tag to its benzylidene moiety, a precise adjustment of the length of the spacer allows the optimum balance to be reached between the activity of the