Novel transition metal complexes and their use in transition metal-catalysed reactions
申请人:——
公开号:US20030220512A1
公开(公告)日:2003-11-27
The invention relates to novel transition metal complexes of the formula (I)
1
to processes for preparing these transition metal complexes, to intermediates for preparing them, and also to the use of the transition metal complexes as catalysts in organic reactions, particularly in metathesis reactions.
Übergangsmetall-Komplexe und deren Einsatz in Übergangsmetallkatalysierten Reaktionen
申请人:Bayer Aktiengesellschaft
公开号:EP1371657A1
公开(公告)日:2003-12-17
Die Erfindung betrifft neue Übergangsmetallkomplexe der Formel (I)
Verfahren zur Herstellung dieser Übergangsmetallkomplexe, Zwischenprodukte zur Herstellung, sowie die Verwendung der Übergangsmetallkomplexe als Katalysatoren in organischen Reaktionen, besonders in Metathesereaktionen.
Ruthenium olefin metathesis catalysts with modified styrene ethers: influence of steric and electronic effects
作者:Mirko Zaja、Stephen J Connon、Aideen M Dunne、Michael Rivard、Nicole Buschmann、Jan Jiricek、Siegfried Blechert
DOI:10.1016/s0040-4020(03)01029-9
日期:2003.8
A series of olefin metathesis catalysts with modified isopropoxybenzylidene ligands were synthesised, and the effects of ligands on the rate of metathesis investigated. Increased steric hinderance ortho to the isopropoxy group enhanced reaction rates. In the case of N-heterocyclic carbene complexes, decreasing electron density at both the chelating oxygen atom and the RuC bond accelerated reaction