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Aminocarbonyl Group Containing Hoveyda−Grubbs-Type Complexes: Synthesis and Activity in Olefin Metathesis Transformations

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journal contribution
posted on 06.06.2008, 00:00 by Diane Rix, Fréderic Caijo, Isabelle Laurent, Fabien Boeda, Hervé Clavier, Steven P. Nolan, Marc Mauduit
Three novel “boomerang” precatalysts bearing different aminocarbonyl functions are reported. Comparative kinetic studies show that this functional group allows for a control of the catalytic activity in metathesis transformations. The scope of the more active catalyst is investigated and shows a good tolerance to various substrates in ring-closing metathesis, enyne metathesis, and cross metathesis. ICP-MS analyses illustrate the good affinity of this catalyst for silica gel, as levels of Ru contamination lower than 6 ppm are detected in the final products.