The Influence of Phosphane Ligands on the Versatility of Ruthenium-Indenylidene Complexes in Metathesis
作者:Julie Broggi、César A. Urbina-Blanco、Hervé Clavier、Anita Leitgeb、Christian Slugovc、Alexandra M. Z. Slawin、Steven P. Nolan
DOI:10.1002/chem.201000659
日期:——
study dealing with the effect of phosphane fine‐tuning in ruthenium–indenylidene catalysts was performed. Challenged to establish how the electronic properties of para‐substituted phosphane ligands translate into catalyst activity, the versatile behaviour of these new ruthenium–indenylidenecomplexes was investigated for a number of metathesis reactions.
Towards Long-Living Metathesis Catalysts by Tuning the N-Heterocyclic Carbene (NHC) Ligand on Trifluoroacetamide-Activated Boomerang Ru Complexes
作者:Hervé Clavier、Fréderic Caijo、Etienne Borré、Diane Rix、Fabien Boeda、Steven P. Nolan、Marc Mauduit
DOI:10.1002/ejoc.200900407
日期:2009.9
trifluoromethylamido-containing “boomerang” precatalysts bearing various N-heterocycliccarbene (NHC) ligands are reported. Comparative kinetic and stability studies show the significant effect of the NHC on the catalyst reaction profile. An investigation of the reaction scope for diverse metathesis transformations has allowed us to establish the influence of the NHC on catalyst activity, especially as a
Terminal Olefins to Linear α,β-Unsaturated Ketones: Pd(II)/Hypervalent Iodine Co-catalyzed Wacker Oxidation–Dehydrogenation
作者:Marinus A. Bigi、M. Christina White
DOI:10.1021/ja402651q
日期:2013.5.29
Development of a mild (35 °C, no Brønsted acids) tandem Wacker oxidation-dehydrogenation of terminal olefins was accomplished using palladium(II) and hypervalentiodine co-catalysis. The reaction affords linear aryl and alkyl α,β-unsaturated ketones directly from readily available terminal olefins in good yields (average 75% per step) with excellent functional group tolerance and chemo- and stereoselectivities
使用钯 (II) 和高价碘助催化,开发了一种温和的(35 °C,无布朗斯台德酸)串联瓦克氧化-末端烯烃脱氢反应。该反应直接从易于获得的末端烯烃中得到直链芳基和烷基 α,β-不饱和酮,收率良好(每步平均 75%),具有优异的官能团耐受性以及化学和立体选择性。人们发现高价碘助催化剂对于脱氢至关重要,但作为化学计量氧化剂并不有效。