Spiro-Annulation <i>via</i> Ring Closing Metathesis Reaction
作者:Sambasivarao Kotha、Ethirajan Manivannan、Thota Ganesh、Nampally Sreenivasachary、Ashoke Deb
DOI:10.1055/s-1999-2896
日期:——
Various spiro cyclic systems are prepared from β-di-carbonyl compounds and active methylene substrates via palladium catalyzed allylation and ring-closing metathesis (RCM) reaction as key steps.
[EN] NOVEL RUTHENIUM COMPLEX, METHOD OF ITS PRODUCTION AND ITS USE IN REACTION OF OLEFINE METATHESIS<br/>[FR] NOUVEAU COMPLEXE DE RUTHÉNIUM, SON PROCÉDÉ DE PRODUCTION ET SON UTILISATION DANS LA RÉACTION DE MÉTATHÈSE D'OLÉFINES
申请人:UNIV WARSZAWSKI
公开号:WO2018100515A1
公开(公告)日:2018-06-07
The invention relates to novel ruthenium complexes of formula (9). The invention also relates to the method for preparation of novel metal complexes of formula (9) and their use in olefin metathesis reactions.
In a Quest for Selectivity Paired with Activity: A Ruthenium Olefin Metathesis Catalyst Bearing an Unsymmetrical Phenanthrene‐Based N‐Heterocyclic Carbene
ruthenium olefin metathesis pre‐catalyst, [3‐benzyl‐1‐(10‐phenyl‐9‐phenanthryl)]‐2‐imidazolidinylidene}dichloro(o‐isopropoxyphenylmethylene)ruthenium(II), Ru‐3, bearing an unsymetrical N‐heterocyclic carbene (uNHC) ligand, has been synthesized. The initiation rate of Ru‐3 was examined by ring‐closing metathesis and cross‐metathesis reactions with a broad spectrum of olefins, showing an unprecendented
A low-waste, time-economical, and scalable semiheterogeneous purification protocol for the removal of ruthenium residues from olefinmetathesis (OM) reactions has been developed. It is based on the non-covalent immobilization of the commercially available isocyanide 1,4-bis(3-isocyanopropyl)piperazine (QA) on unmodified silica gel. The use of the heterogeneous scavenger [email protected]2 synthesized
Allylic Alkylation and Ring-Closing Metathesis in Sequence: A Successful Cohabitation of Pd and Ru
作者:Claire Kammerer、Guillaume Prestat、Thomas Gaillard、David Madec、Giovanni Poli
DOI:10.1021/ol702694v
日期:2008.2.1
An allylic alkylation/ring-closing metathesis domino catalytic process, wherein a palladium and a ruthenium catalyst are concomitantly present in the reaction mixture from the outset of the reaction, is developed. Evidence for Grubbs' catalysts activity in allylic alkylation is also reported.