A highly controllable latent ruthenium Schiff base olefin metathesis catalyst: Catalyst activation and mechanistic studies

2009 ◽  
Vol 48 (2) ◽  
pp. 302-310 ◽  
Author(s):  
Stijn Monsaert ◽  
Nele Ledoux ◽  
Renata Drozdzak ◽  
Francis Verpoort
Keyword(s):  
Schiff Base ◽  
Olefin Metathesis ◽  
Mechanistic Studies ◽  
Catalyst Activation ◽  
Metathesis Catalyst

A Light-Activated Olefin Metathesis Catalyst Equipped with a Chromatic Orthogonal Self-Destruct Function

2015 ◽  
Vol 128 (2) ◽  
pp. 774-777 ◽  
Author(s):  
Revannath L. Sutar ◽  
Efrat Levin ◽  
Danielle Butilkov ◽  
Israel Goldberg ◽  
Ofer Reany ◽  
...  
Keyword(s):  
Olefin Metathesis ◽  
Metathesis Catalyst

Encapsulation of an Olefin Metathesis Catalyst in the Nanocages of SBA-1: Facile Preparation, High Encapsulation Efficiency, and High Activity

ChemCatChem ◽  
2013 ◽  
Vol 5 (8) ◽  
pp. 2278-2287 ◽  
Author(s):  
Hengquan Yang ◽  
Zhancheng Ma ◽  
Ting Zhou ◽  
Wenjuan Zhang ◽  
Jianbin Chao ◽  
...  
Keyword(s):  
High Activity ◽  
Olefin Metathesis ◽  
Encapsulation Efficiency ◽  
Metathesis Catalyst ◽  
Facile Preparation

A New Concept for the Noncovalent Binding of a Ruthenium-Based Olefin Metathesis Catalyst to Polymeric Phases: Preparation of a Catalysts on Raschig Rings.

ChemInform ◽  
2007 ◽  
Vol 38 (4) ◽  
Author(s):  
Anna Michrowska ◽  
Klaas Mennecke ◽  
Ulrich Kunz ◽  
Andreas Kirschning ◽  
Karol Grela
Keyword(s):  
Olefin Metathesis ◽  
Metathesis Catalyst ◽  
Noncovalent Binding

Quest for the ideal olefin metathesis catalyst

2008 ◽  
Vol 80 (1) ◽  
pp. 31-43 ◽  
Author(s):  
Anna Michrowska ◽  
Karol Grela
Keyword(s):  
Oxygen Atom ◽  
Quaternary Ammonium ◽  
Olefin Metathesis ◽  
Amino Group ◽  
Sulfonated Polystyrene ◽  
Grubbs Catalyst ◽  
Metathesis Catalyst ◽  
Metathesis Catalysts ◽  
Novel Strategy ◽  
The Ideal

Attempts were made to create a catalyst that approaches Gladysz's vision of an "ideal catalyst". Modifications of the Hoveyda-Grubbs catalyst were carried out with the aim to increase its activity and broaden the scope of its applicability to challenging metathesis reactions. This was done by introduction of an electron-withdrawing substituent on the isopropoxybenzylidene group in order to diminish the donor properties of the oxygen atom. The resulting stable and easily accessible nitro-substituted Hoveyda-Grubbs catalyst has found a number of successful applications in various research and industrial laboratories. Also, a new concept for noncovalent immobilization of a ruthenium olefin metathesis catalyst is presented. The 2-isopropoxybenzylidene ligand of Hoveyda-Grubbs carbene is further modified by an additional amino group, and immobilization is achieved by treatment with sulfonated polystyrene, forming the corresponding ammonium salt. In this novel strategy for the immobilization of ruthenium-based metathesis catalysts, the amino group plays a dual role, being first an active anchor for immobilization and secondly, after protonation, activating the catalysts by electron-donating to -withdrawing switch. The same concept has been used in the preparation of a quaternary ammonium catalyst for aqueous olefin metathesis.

scholarly journals A rational pre-catalyst design for bis-phosphine mono-oxide palladium catalyzed reactions

2017 ◽  
Vol 8 (4) ◽  
pp. 2841-2851 ◽  
Author(s):  
Yining Ji ◽  
Hongming Li ◽  
Alan M. Hyde ◽  
Qinghao Chen ◽  
Kevin M. Belyk ◽  
...  
Keyword(s):  
Rational Design ◽  
Catalyst Design ◽  
Mechanistic Studies ◽  
Catalyst Activation ◽  
Palladium Catalyzed ◽  
Catalyzed Reactions

Detailed mechanistic studies of a Pd-catalyzed asymmetric C–N coupling led to a rational design of a new series of bis-phosphine mono-oxides ligated Pd(ii) pre-catalysts that allow for reliable and complete catalyst activation.

Carboxyl Graphene as a Superior Support for Bulky Ruthenium-Based Olefin Metathesis Catalyst

2018 ◽  
Vol 37 (12) ◽  
pp. 1837-1844 ◽  
Author(s):  
Katarzyna Kaczanowska ◽  
Michał Chwalba ◽  
Jakub Pastva ◽  
Martin Kubů ◽  
Anna Ruszczyńska ◽  
...  
Keyword(s):  
Olefin Metathesis ◽  
Metathesis Catalyst

scholarly journals Light-Activated Olefin Metathesis: Catalyst Development, Synthesis, and Applications

2020 ◽  
Vol 53 (10) ◽  
pp. 2456-2471
Author(s):  
Or Eivgi ◽  
Ravindra S. Phatake ◽  
Noy B. Nechmad ◽  
N. Gabriel Lemcoff
Keyword(s):  
Olefin Metathesis ◽  
Catalyst Development ◽  
Metathesis Catalyst
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