Ruthenium olefin metathesis catalysts featuring unsymmetrical N-heterocyclic carbenes

2016 ◽  
Vol 45 (2) ◽  
pp. 561-571 ◽  
Author(s):  
Veronica Paradiso ◽  
Valerio Bertolasi ◽  
Chiara Costabile ◽  
Fabia Grisi
Keyword(s):  
Alkyl Group ◽  
Olefin Metathesis ◽  
Second Generation ◽  
Ruthenium Catalysts ◽  
Heterocyclic Carbenes ◽  
Metathesis Catalysts

New second generation ruthenium catalysts bearing unsymmetrical NHCs show different catalytic efficiencies depending on the size of the N-alkyl group (methyl or cyclohexyl) and on the backbone configuration.

Nitrenium ions and trivalent boron ligands as analogues of N-heterocyclic carbenes in olefin metathesis: a computational study

2015 ◽  
Vol 44 (46) ◽  
pp. 20021-20026 ◽  
Author(s):  
A. Pazio ◽  
K. Woźniak ◽  
K. Grela ◽  
B. Trzaskowski
Keyword(s):  
Olefin Metathesis ◽  
Computational Study ◽  
Heterocyclic Carbenes ◽  
Mechanistic Study ◽  
Nitrenium Ions ◽  
Nitrenium Ion ◽  
Metathesis Catalysts

A DFT mechanistic study reveals that nitrenium ion-modified Hoveyda-like complexes are good candidates for latent metathesis catalysts, while boron-modified systems are candidates for very fast metathesis catalysts.

Merrifield resin-assisted routes to second-generation catalysts for olefin metathesis

2018 ◽  
Vol 8 (6) ◽  
pp. 1535-1544 ◽  
Author(s):  
Daniel L. Nascimento ◽  
Emma C. Davy ◽  
Deryn E. Fogg
Keyword(s):  
Olefin Metathesis ◽  
Second Generation ◽  
Highly Active ◽  
Merrifield Resin ◽  
Metathesis Catalysts

Phosphine-scavenging Merrifield resins can significantly facilitate the synthesis of highly active Ru metathesis catalysts, including the second-generation Grubbs, Hoveyda, and indenylidene catalysts (GII, HII, InII).

Synthesis and characterization of non-chelating ruthenium–indenylidene olefin metathesis catalysts derived from substituted 1,1-diphenyl-2-propyn-1-ols

2015 ◽  
Vol 39 (3) ◽  
pp. 1858-1867 ◽  
Author(s):  
Baoyi Yu ◽  
Yu Xie ◽  
Fatma B. Hamad ◽  
Karen Leus ◽  
Alex A. Lyapkov ◽  
...  
Keyword(s):  
Olefin Metathesis ◽  
First Generation ◽  
Catalytic Performance ◽  
Ruthenium Catalysts ◽  
Synthesis And Characterization ◽  
Metathesis Reactions ◽  
Metathesis Catalysts

The synthesis and characterization of four first-generation modified non-chelating indenylidene ruthenium catalysts is reported, as well as their catalytic performance in olefin metathesis reactions.

scholarly journals Ruthenium Olefin Metathesis Catalysts Featuring N-Heterocyclic Carbene Ligands Tagged with Isonicotinic and 4-(Dimethylamino)benzoic Acid Rests: Evaluation of a Modular Synthetic Strategy

Molecules ◽  
2021 ◽  
Vol 26 (17) ◽  
pp. 5220
Author(s):  
Stefan Czarnocki ◽  
Louis Monsigny ◽  
Michał Sienkiewicz ◽  
Anna Kajetanowicz ◽  
Karol Grela
Keyword(s):  
Benzoic Acid ◽  
Olefin Metathesis ◽  
Ruthenium Catalysts ◽  
Benzoic Acids ◽  
Carbene Ligands ◽  
Synthetic Strategy ◽  
Starting Point ◽  
Brønsted Base ◽  
Metathesis Catalysts

A modular and flexible strategy towards the synthesis of N-heterocyclic carbene (NHC) ligands bearing Brønsted base tags has been proposed and then adopted in the preparation of two tagged NHC ligands bearing rests of isonicotinic and 4-(dimethylamino)benzoic acids. Such tagged NHC ligands represent an attractive starting point for the synthesis of olefin metathesis ruthenium catalysts tagged in non-dissociating ligands. The influence of the Brønsted basic tags on the activity of such obtained olefin metathesis catalysts has been studied.

Improved One-Pot Synthesis of Second-Generation Ruthenium Olefin Metathesis Catalysts

2002 ◽  
Vol 21 (2) ◽  
pp. 442-444 ◽  
Author(s):  
Laleh Jafarpour ◽  
Anna C. Hillier ◽  
Steven P. Nolan
Keyword(s):  
Olefin Metathesis ◽  
Second Generation ◽  
One Pot ◽  
One Pot Synthesis ◽  
Metathesis Catalysts
Sign in / Sign up

Export Citation Format

Share Document