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.
作者:Cédric Theunissen、Melissa A. Ashley、Tomislav Rovis
DOI:10.1021/jacs.8b13663
日期:2019.5.1
development of a new system to achieve visible-light-controlled metathesis by merging olefinmetathesis and photoredox catalysis. The combination of a ruthenium metathesis catalyst bearing two N-heterocyclic carbenes with an oxidizing pyrylium photocatalyst affords excellent temporal and spatial resolution using only visible light as stimulus. Applications of this system in synthesis, as well as in polymer
Pd-catalyzed allylation of CH acids under phase-transfer conditions
作者:A. A. Vasil’ev、S. E. Lyubimov、E. P. Serebryakov、V. A. Davankov、M. I. Struchkova、S. G. Zlotin
DOI:10.1007/s11172-010-0120-5
日期:2010.3
The composition of the products obtained by Pd-catalyzed allylation of diethyl (alkyl)-malonates and ethyl cyanoacetate with allylic acetates under phase-transfer conditions using potassium carbonate or phosphate as bases depended strongly on the nature of the reactants and the ligands used. The highest yields and the fraction of the “linear” regioisomers were achieved in the reactions of prenyl or 3-methylbut-1-en-3-yl acetates in the presence of phosphordiamidite ligands.
Compositions And Methods For Visible-Light-Controlled Ruthenium-Catalyzed Olefin Metathesis
申请人:The Trustees of Columbia University In The City of New York
公开号:US20200108381A1
公开(公告)日:2020-04-09
The present disclosure provides compositions and methods for metathesizing a first alkenyl or alkynyl group with a second alkenyl or alkynyl group, the composition comprising a ruthenium metathesis catalyst and a photoredox catalyst that is activated by visible light.
Backbone tuning in indenylidene–ruthenium complexes bearing an unsaturated <i>N</i>-heterocyclic carbene
作者:César A Urbina-Blanco、Xavier Bantreil、Hervé Clavier、Alexandra M Z Slawin、Steven P Nolan
DOI:10.3762/bjoc.6.128
日期:——
The steric and electronic influence of backbone substitution in IMes-based (IMes = 1,3-bis(2,4,6-trimethylphenyl)imidazol-2-ylidene) N-heterocyclic carbenes (NHC) was probed by synthesizing the [RhCl(CO)(2)(NHC)] series of complexes to quantify experimentally the Tolman electronic parameter (electronic) and the percentburiedvolume (%V(bur), steric) parameters. The corresponding ruthenium-indenylidene