ESI-MS Study on First-Generation Ruthenium Olefin Metathesis Catalysts in Solution: Direct Detection of the Catalytically Active 14-Electron Ruthenium Intermediate

2008 ◽  
Vol 27 (12) ◽  
pp. 2761-2766 ◽  
Author(s):  
Haoyang Wang ◽  
Jürgen O. Metzger
Keyword(s):  
Olefin Metathesis ◽  
First Generation ◽  
Direct Detection ◽  
Esi Ms ◽  
Catalytically Active ◽  
Metathesis Catalysts

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.

ESI-MS Studies and Calculations on Second-Generation Grubbs and Hoveyda–Grubbs Ruthenium Olefin Metathesis Catalysts

2012 ◽  
Vol 31 (5) ◽  
pp. 1627-1634 ◽  
Author(s):  
Hao-Yang Wang ◽  
Wai-Leung Yim ◽  
Yin-Long Guo ◽  
Jürgen O. Metzger
Keyword(s):  
Olefin Metathesis ◽  
Second Generation ◽  
Esi Ms ◽  
Metathesis Catalysts

Light guided chemoselective olefin metathesis reactions

2017 ◽  
Vol 89 (6) ◽  
pp. 829-840 ◽  
Author(s):  
Ofer Reany ◽  
N. Gabriel Lemcoff
Keyword(s):  
Chemical Reactions ◽  
Olefin Metathesis ◽  
Lessons Learned ◽  
The Past ◽  
Metathesis Reactions ◽  
Catalytically Active ◽  
Recent Developments ◽  
Metathesis Catalysts ◽  
External Stimuli ◽  
Careful Design

AbstractAn appealing concept in synthetic chemistry is photo-induced catalysis; where dormant complexes become catalytically active upon activation with light. The ruthenium-based olefin metathesis complexes founded on the original Grubbs catalyst have probably been one of the most widely studied families of catalysts for the past 25 years. Greater stability and versatility of these olefin-metathesis catalysts has been achieved by careful design of the ligand sphere, including latent catalysts which are activated by external stimuli. This article describes our recent developments towards light-induced olefin metathesis reactions based on photoactive sulfur-chelated ruthenium benzylidene catalysts. Alternative chemical reactions, be it photo-induced olefin metathesis or other direct photochemical processes, by using light of different frequencies were studied in chemoselective chromatic orthogonal pathways. The lessons learned during the development of these reactions have given birth to selective photo-deprotection sequences and novel pathways for stereolithographic applications.

A Convenient System for Improving the Efficiency of First-Generation Ruthenium Olefin Metathesis Catalysts

2005 ◽  
Vol 24 (19) ◽  
pp. 4528-4542 ◽  
Author(s):  
Grant S. Forman ◽  
Ann E. McConnell ◽  
Robert P. Tooze ◽  
Werner Janse van Rensburg ◽  
Wolfgang H. Meyer ◽  
...  
Keyword(s):  
Olefin Metathesis ◽  
First Generation ◽  
Metathesis Catalysts

Activated Hoveyda‐Grubbs Olefin Metathesis Catalysts Derived from a Large Scale Produced Pharmaceutical Intermediate—Sildenafil Aldehyde

2021 ◽  
Author(s):  
Louis Monsigny ◽  
Jakub Piątkowski ◽  
Damian Trzybiński ◽  
Krzysztof Wozniak ◽  
Tomasz Nienałtowski ◽  
...  
Keyword(s):  
Olefin Metathesis ◽  
Large Scale ◽  
Metathesis Catalysts

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.

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