Synthesis of Ruthenium Olefin Metathesis Catalysts with Linear Alkyl Carbene Complexes

Second-generation ruthenium olefin metathesis catalysts with linear alkyl carbenes were needed to install a linear alkyl end group on ROMP polymers. The ethylidene complexes RuCl2(PCy3)(SIMes)CHMe (PCy3 = tricyclohexylphosphine; SIMes = 1,3-bis(mesityl)imidazolidin-2-ylidene) and RuCl2(3BP)2(SIMes)C...

Ausführliche Beschreibung

Gespeichert in:
Bibliographische Detailangaben
Veröffentlicht in:Organometallics 2005-03, Vol.24 (7), p.1477-1482
Hauptverfasser: Lehman, Stephen E, Wagener, Kenneth B
Format: Artikel
Sprache:eng
Online-Zugang:Volltext
Tags: Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
Beschreibung
Zusammenfassung:Second-generation ruthenium olefin metathesis catalysts with linear alkyl carbenes were needed to install a linear alkyl end group on ROMP polymers. The ethylidene complexes RuCl2(PCy3)(SIMes)CHMe (PCy3 = tricyclohexylphosphine; SIMes = 1,3-bis(mesityl)imidazolidin-2-ylidene) and RuCl2(3BP)2(SIMes)CHMe (3BP = 3-bromopyridine) were readily accessible by reaction of RuCl2(PCy3)(SIMes)CHPh with 2-butene. Synthesis of higher alkyl analogues, such as propylidene and heptylidene, are complicated by the intervention of olefin isomerization. Although slightly less reactive than the parent complex, these complexes are suitable catalysts for both ADMET and ROMP.
ISSN:0276-7333
1520-6041
DOI:10.1021/om049176q