Unexpected formation of nitroso-chelated cyclic η1-acylruthenium(II) complex, an effective catalysts for transfer hydrogenation reaction
作者:Nirmalya Mukherjee、Rafał Gawin、Stefan J. Czarnocki、Roman Gajda、Maura Malińska、Krzysztof Woźniak、Anna Kajetanowicz、Karol Grela
DOI:10.1016/j.jorganchem.2018.01.035
日期:2018.7
Reaction of commercial rutheniumcomplexes M31 and M20 with 2-nitrostyrene gave a new nitroso-chelated cyclic η1-acyl ruthenium(II) complexes Ru-4 and Ru-6 respectively instead of expected Hoveyda-Grubbs type (pre)catalyst Ru-3. New complexes were characterized by means of standard analytical techniques and their crystallographic structure has been confirmed by X-ray structural analysis. It was found
Simple activation by acid of latent Ru-NHC-based metathesis initiators bearing 8-quinolinolate co-ligands
作者:Julia Wappel、Roland C Fischer、Luigi Cavallo、Christian Slugovc、Albert Poater
DOI:10.3762/bjoc.12.17
日期:——
A straightforward synthesis utilizing the ring-opening metathesis polymerization (ROMP) reaction is described for acid-triggered N,O-chelating ruthenium-based pre-catalysts bearing one or two 8-quinolinolate ligands. The innovative pre-catalysts were tested regarding their behavior in ROMP and especially for their use in the synthesis of poly(dicyclopentadiene) (pDCPD). Bearing either the common phosphine
The present invention relates to pre-catalysts for olefin metathesis and composition involving these pre-catalysts.
本发明涉及用于烯烃重排反应的前驱催化剂以及涉及这些前驱催化剂的组合物。
[EN] SYNTHESIS AND CHARACTERIZATION OF METATHESIS CATALYSTS<br/>[FR] SYNTHÈSE ET CARACTÉRISATION DE CATALYSEURS DE MÉTATHÈSE
申请人:MATERIA INC
公开号:WO2018038928A1
公开(公告)日:2018-03-01
This invention relates generally to olefin metathesis catalysts, to the preparation of such compounds, compositions comprising such compounds, methods of using such compounds, and the use of such compounds in the metathesis of olefins and in the synthesis of related olefin metathesis catalysts. The invention has utility in the fields of catalysis, organic synthesis, polymer chemistry, and in industrial applications such as oil and gas, fine chemicals, and pharmaceuticals.
Simple synthetic routes to ruthenium–indenylidene olefin metathesis catalysts
作者:César A. Urbina-Blanco、Simone Manzini、Jessica Pérez Gomes、Angelino Doppiu、Steven P. Nolan
DOI:10.1039/c1cc10741k
日期:——
An efficient synthetic protocol involving reactions between the free carbene and [RuCl(2)(PPh(3))(2)(Ind)] followed by addition of pyridine leads to the isolation of olefinmetathesis active [RuCl(2)(L)(Py)(Ind)] (L = SIMes and SIPr) complexes. This novel approach circumvents the use of costly tricyclohexylphosphine.