Ruthenium catalysts bearing N-heterocyclic carbene ligands in atom transfer radical reactions

2003 ◽  
Vol 44 (32) ◽  
pp. 6011-6015 ◽  
Author(s):  
Aurore Richel ◽  
Sébastien Delfosse ◽  
Cédric Cremasco ◽  
Lionel Delaude ◽  
Albert Demonceau ◽  
...  
Keyword(s):  
Ruthenium Catalysts ◽  
Radical Reactions ◽  
Atom Transfer ◽  
Carbene Ligands

A Cationic Diruthenium Amidinate, [(η5-C5Me5)Ru (μ2-i-PrN=C(Me)Ni-Pr)Ru (η5-C5Me5)]+, as an Efficient Catalyst for the Atom-Transfer Radical Reactions.

ChemInform ◽  
2004 ◽  
Vol 35 (36) ◽  
Author(s):  
Yukihiro Motoyama ◽  
Mitsuru Gondo ◽  
Satoshi Masuda ◽  
Yuya Iwashita ◽  
Hideo Nagashima
Keyword(s):  
Radical Reactions ◽  
Atom Transfer ◽  
Efficient Catalyst

Ruthenium Catalysts for Hydrogenation of Aromatic and Aliphatic Esters: Make Use of Bidentate Carbene Ligands

ChemSusChem ◽  
2013 ◽  
Vol 6 (6) ◽  
pp. 1001-1005 ◽  
Author(s):  
Felix A. Westerhaus ◽  
Bianca Wendt ◽  
Andreas Dumrath ◽  
Gerrit Wienhöfer ◽  
Kathrin Junge ◽  
...  
Keyword(s):  
Ruthenium Catalysts ◽  
Carbene Ligands ◽  
Aliphatic Esters

scholarly journals Tandem catalysis of ring-closing metathesis/atom transfer radical reactions with homobimetallic ruthenium–arene complexes

2010 ◽  
Vol 6 ◽  
pp. 1167-1173 ◽  
Author(s):  
Yannick Borguet ◽  
Xavier Sauvage ◽  
Guillermo Zaragoza ◽  
Albert Demonceau ◽  
Lionel Delaude
Keyword(s):  
Mixed Valence ◽  
Active Species ◽  
Radical Reactions ◽  
Catalyst Precursor ◽  
Atom Transfer ◽  
Tandem Catalysis ◽  
Ring Closing Metathesis ◽  
Experimental Conditions ◽  
Mixed Valence Compound ◽  
The Individual

The tandem catalysis of ring-closing metathesis/atom transfer radical reactions was investigated with the homobimetallic ruthenium–indenylidene complex [(p-cymene)Ru(μ-Cl)3RuCl(3-phenyl-1-indenylidene)(PCy3)] (1) to generate active species in situ. The two catalytic processes were first carried out independently in a case study before the whole sequence was optimized and applied to the synthesis of several polyhalogenated bicyclic γ-lactams and lactones from α,ω-diene substrates bearing trihaloacetamide or trichloroacetate functionalities. The individual steps were carefully monitored by 1H and 31P NMR spectroscopies in order to understand the intimate details of the catalytic cycles. Polyhalogenated substrates and the ethylene released upon metathesis induced the clean transformation of catalyst precursor 1 into the Ru(II)–Ru(III) mixed-valence compound [(p-cymene)Ru(μ-Cl)3RuCl2(PCy3)], which was found to be an efficient promoter for atom transfer radical reactions under the adopted experimental conditions.

Ruthenium Catalysts Supported by Amino-Substituted N-Heterocyclic Carbene Ligands for Olefin Metathesis of Challenging Substrates

2017 ◽  
Vol 23 (8) ◽  
pp. 1950-1955 ◽  
Author(s):  
Vincent César ◽  
Yin Zhang ◽  
Wioletta Kośnik ◽  
Adam Zieliński ◽  
Adam A. Rajkiewicz ◽  
...  
Keyword(s):  
Olefin Metathesis ◽  
Ruthenium Catalysts ◽  
Carbene Ligands

A Cationic Diruthenium Amidinate, [(η5-C5Me5)Ru(μ2-i-PrN=C(Me)Ni-Pr)Ru(η5-C5Me5)]+, as an Efficient Catalyst for the Atom-Transfer Radical Reactions

2004 ◽  
Vol 33 (4) ◽  
pp. 442-443 ◽  
Author(s):  
Yukihiro Motoyama ◽  
Mitsuru Gondo ◽  
Satoshi Masuda ◽  
Yuya Iwashita ◽  
Hideo Nagashima
Keyword(s):  
Radical Reactions ◽  
Atom Transfer ◽  
Efficient Catalyst
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