Synthesis of Highly Functionalized Cyclooctenes by Ring-Closing Metathesis: Unexpected Formation of atrans Isomer

2000 ◽  
Vol 39 (4) ◽  
pp. 725-728 ◽  
Author(s):  
Damien Bourgeois ◽  
Ange Pancrazi ◽  
Louis Ricard ◽  
Joëlle Prunet
Keyword(s):  
Ring Closing Metathesis ◽  
Unexpected Formation

ChemInform Abstract: Synthesis of Highly Functionalized Cyclooctenes by Ring-Closing Metathesis: Unexpected Formation of a trans Isomer.

ChemInform ◽  
2010 ◽  
Vol 31 (23) ◽  
pp. no-no
Author(s):  
Damien Bourgeois ◽  
Ange Pancrazi ◽  
Louis Ricard ◽  
Joelle Prunet
Keyword(s):  
Trans Isomer ◽  
Ring Closing Metathesis ◽  
Unexpected Formation

Nickel-Catalyzed Inter- and Intramolecular Carbon-Sulfur Bond Metathesis by Reversible Arylation

2019 ◽  
Author(s):  
Tristan Delcaillau ◽  
Alessandro Bismuto ◽  
Zhong Lian ◽  
Bill Morandi
Keyword(s):  
Good Yield ◽  
Functional Group ◽  
Product Formation ◽  
Single Bond ◽  
Ring Closing Metathesis ◽  
Catalytic Systems ◽  
Metathesis Reactions ◽  
New Applications ◽  
Further Development ◽  
Sulfur Bond

A nickel-catalyzed carbon-sulfur bond metathesis has been developed to access high-value thioethers. 1,2-bis(dicyclohexylphosphino)ethane (dcype) is essential to promote this highly functional group tolerant reaction. Further, synthetically challenging macrocycles could be obtained in good yield in an unusual example of ring-closing metathesis which does not involve alkene bonds. In-depth organometallic studies support a reversible Ni(0)-Ni(II) pathway to product formation. Overall, this work does not only disclose a more sustainable and more functional group tolerant alternative to previous catalytic systems based on Pd, but also presents new applications and mechanistic information which are highly relevant to the further development and application of unusual single bond metathesis reactions.

One-Pot Tandem Ring-Opening and Ring-Closing Metathesis Polymerization of Disubstituted Cyclopentenes Featuring a Terminal Alkyne Functionality

2020 ◽  
Vol 53 (11) ◽  
pp. 4330-4337
Author(s):  
Santhosh Kumar Podiyanachari ◽  
Salvador Moncho ◽  
Edward N. Brothers ◽  
Saeed Al-Meer ◽  
Mohammed Al-Hashimi ◽  
...  
Keyword(s):  
Ring Opening ◽  
Terminal Alkyne ◽  
Ring Closing Metathesis ◽  
One Pot ◽  
Metathesis Polymerization

Synthesis of coumarins by ring-closing metathesis using Grubbs’ catalyst

2003 ◽  
Vol 44 (22) ◽  
pp. 4199-4201 ◽  
Author(s):  
Tuyen Nguyen Van ◽  
Silvia Debenedetti ◽  
Norbert De Kimpe
Keyword(s):  
Ring Closing Metathesis ◽  
Grubbs Catalyst

New pseudohalide ligands in Ru-catalyzed olefin metathesis — A robust, air-activated iminopyrrolato catalyst

2005 ◽  
Vol 83 (6-7) ◽  
pp. 748-754 ◽  
Author(s):  
Samantha D Drouin ◽  
Heather M Foucault ◽  
Glenn PA Yap ◽  
Deryn E Fogg
Keyword(s):  
Key Words ◽  
Olefin Metathesis ◽  
High Reactivity ◽  
Ring Closing Metathesis ◽  
Grubbs Catalyst ◽  
X Ray ◽  
X Ray Crystallography

Reaction of the Grubbs catalyst RuCl2(PCy3)2(CHPh) (1) with lithium 2-[(2,6-diisopropylphenyl)imino]pyrrolide·Et2O (LiNN′·Et2O) gives alkylidene complex 5, containing a chelating, σ-bound iminopyrrolato unit. The structure of 5 is confirmed by X-ray crystallography. Treatment of 5 with pyridine generates RuCl(NN′)(py)2(CHPh) (6) via displacement of PCy3. Complex 5 effects ring-closing metathesis in air, displaying high reactivity relative to 6.Key words: ruthenium, alkylidene, metathesis, pyrrolimine, iminopyrrolato.

Synthesis of unsaturated 1,4-heteroatom-containing benzo-fused heterocycles using a sequential isomerization–ring-closing metathesis strategy

Tetrahedron ◽  
2009 ◽  
Vol 65 (51) ◽  
pp. 10650-10659 ◽  
Author(s):  
Garreth L. Morgans ◽  
E. Lindani Ngidi ◽  
Lee G. Madeley ◽  
Setshaba D. Khanye ◽  
Joseph P. Michael ◽  
...  
Keyword(s):  
Ring Closing Metathesis ◽  
Fused Heterocycles
Sign in / Sign up

Export Citation Format

Share Document