A simple and practical phase-separation approach to the recycling of a homogeneous metathesis catalyst
作者:Anna Michrowska、Łukasz Gułajski、Karol Grela
DOI:10.1039/b517088e
日期:——
The air stable asarone-derived Ru carbene 16, a robust olefin metathesis catalyst, can be easily separated after reaction by deposition on silica gel and reused up to nine times. This procedure provides products of excellent purity with low Ru content.
Synthesis and metathesis reactions of a phosphine-free dihydroimidazole carbene ruthenium complex
作者:Simon Gessler、Stefan Randl、Siegfried Blechert
DOI:10.1016/s0040-4039(00)01808-6
日期:2000.12
Synthesis and activity in ring closure metathesis (RCM) and cross metathesis (CM) of the phosphine-free 1,3-dimesityl-4,5-dihydroimidazole-2-ylidene (IHMes) ruthenium alkoxybenzylidene complex 6 are reported.
[EN] RUTHENIUM COMPLEXES AS (PRE)CATALYSTS FOR METATHESIS REACTIONS<br/>[FR] COMPLEXES DE RUTHENIUM EN TANT QUE (PRE)CATALYSEURS DE REACTION DE METATHESE
申请人:BOEHRINGER INGELHEIM INT
公开号:WO2004035596A1
公开(公告)日:2004-04-29
The invention relates to new (pre)catalysts of ruthenium complexes of formula (I), wherein L1, X, X', R?1, R2, R3¿ and n are defined herein. The novel ruthenium complexes of formula 1 are convenient (pre)catalysts for metathesis reactions and can be applied i.e. for ring-closing metathesis, cross metathesis or ene-ine metathesis reactions. Another aspect of the invention are the novel intermediates of formula (II).
A Unique Ruthenium Carbyne Complex: A Highly Thermo-endurable Catalyst for Olefin Metathesis
作者:Mingbo Shao、Lu Zheng、Weixia Qiao、Jingjing Wang、Jianhui Wang
DOI:10.1002/adsc.201200119
日期:2012.10.8
A cationic rutheniumcarbynecomplex was prepared and was found to initiate olefinmetathesis reactions with good activities, which throws a new light on the design of a new type of rutheniumcatalyst for RCM reactions. More importantly, no double bond isomerized by-product was observed even at elevated temperatures in reactions catalyzed by the new carbynecomplex. A mechanism involving the in situ