Multifactor Control of Vinyl Monomer Sequence, Molecular Weight, and Tacticity via Iterative Radical Additions and Olefin Metathesis Reactions

2020 ◽  
Vol 142 (44) ◽  
pp. 18955-18962 ◽  
Author(s):  
Masato Miyajima ◽  
Kotaro Satoh ◽  
Takahiro Horibe ◽  
Kazuaki Ishihara ◽  
Masami Kamigaito
Keyword(s):  
Molecular Weight ◽  
Olefin Metathesis ◽  
Vinyl Monomer ◽  
Monomer Sequence ◽  
Metathesis Reactions

Catalytic Carbonyl-Olefin Metathesis of Aliphatic Ketones: Iron(III) HomoDimers as Lewis Acidic Superelectrophiles

2018 ◽  
Author(s):  
Haley Albright ◽  
Paul S. Riehl ◽  
Christopher C. McAtee ◽  
Jolene P. Reid ◽  
Jacob R. Ludwig ◽  
...  
Keyword(s):  
Lewis Acid ◽  
Olefin Metathesis ◽  
Acid Activation ◽  
Lewis Acid Catalysts ◽  
Distinct Mode ◽  
Aliphatic Ketones ◽  
Carbon Carbon Bond ◽  
Metathesis Reactions ◽  
Acid Catalyzed

<div>Catalytic carbonyl-olefin metathesis reactions have recently been developed as a powerful tool for carbon-carbon bond</div><div>formation. However, currently available synthetic protocols rely exclusively on aryl ketone substrates while the corresponding aliphatic analogs remain elusive. We herein report the development of Lewis acid-catalyzed carbonyl-olefin ring-closing metathesis reactions for aliphatic ketones. Mechanistic investigations are consistent with a distinct mode of activation relying on the in situ formation of a homobimetallic singly-bridged iron(III)-dimer as the active catalytic species. These “superelectrophiles” function as more powerful Lewis acid catalysts that form upon association of individual iron(III)-monomers. While this mode of Lewis acid activation has previously been postulated to exist, it has not yet been applied in a catalytic setting. The insights presented are expected to enable further advancement in Lewis acid catalysis by building upon the activation principle of “superelectrophiles” and broaden the current scope of catalytic carbonyl-olefin metathesis reactions.</div>

scholarly journals Modification of proteins using olefin metathesis

2020 ◽  
Vol 4 (4) ◽  
pp. 1040-1051 ◽  
Author(s):  
Marco S. Messina ◽  
Heather D. Maynard
Keyword(s):  
Small Molecules ◽  
Olefin Metathesis ◽  
Aqueous Media ◽  
Metathesis Reactions ◽  
P Proteins

Proteins are modified with small molecules and polymers via olefin metathesis reactions in aqueous media.

Synthesis of Vanadium Oxo Alkylidene Complex and Its Reactivity in Ring-Closing Olefin Metathesis Reactions

2021 ◽  
Author(s):  
Dmitry S. Belov ◽  
Didac A. Fenoll ◽  
Indranil Chakraborty ◽  
Xavier Solans-Monfort ◽  
Konstantin V. Bukhryakov
Keyword(s):  
Olefin Metathesis ◽  
Metathesis Reactions

ChemInform Abstract: RTILs in Catalytic Olefin Metathesis Reactions

ChemInform ◽  
2016 ◽  
Vol 47 (41) ◽  
Author(s):  
Cedric Fischmeister ◽  
Christian Bruneau
Keyword(s):  
Olefin Metathesis ◽  
Metathesis Reactions

scholarly journals Cover Feature: One‐pot Synthesis of 1,3‐Butadiene and 1,6‐Hexanediol Derivatives from Cyclopentadiene (CPD) via Tandem Olefin Metathesis Reactions (ChemCatChem 21/2018)

ChemCatChem ◽  
2018 ◽  
Vol 10 (21) ◽  
pp. 4780-4780
Author(s):  
Gábor Turczel ◽  
Ervin Kovács ◽  
Eszter Csizmadia ◽  
Tibor Nagy ◽  
Imre Tóth ◽  
...  
Keyword(s):  
Olefin Metathesis ◽  
One Pot ◽  
One Pot Synthesis ◽  
Metathesis Reactions

Operation of the Boomerang Mechanism in Olefin Metathesis Reactions Promoted by the Second-Generation Hoveyda Catalyst

ACS Catalysis ◽  
2014 ◽  
Vol 4 (7) ◽  
pp. 2387-2394 ◽  
Author(s):  
Jennifer M. Bates ◽  
Justin A. M. Lummiss ◽  
Gwendolyn A. Bailey ◽  
Deryn E. Fogg
Keyword(s):  
Olefin Metathesis ◽  
Second Generation ◽  
Metathesis Reactions

scholarly journals Recent Advances in the Application of Ring-Closing Metathesis for the Synthesis of Unsaturated Nitrogen Heterocycles

Synthesis ◽  
2019 ◽  
Vol 51 (05) ◽  
pp. 1100-1114 ◽  
Author(s):  
Emilia Groso ◽  
Corinna Schindler
Keyword(s):  
Olefin Metathesis ◽  
Nitrogen Heterocycles ◽  
Short Review ◽  
Catalyst Design ◽  
Carbene Ligands ◽  
Ring Closing Metathesis ◽  
Recent Advances ◽  
Metathesis Reactions

This short review summarizes recent advances relating to the application of ring-closing olefin-olefin and carbonyl-olefin metathesis reactions towards the synthesis of unsaturated five- and six-membered nitrogen heterocycles. These developments include catalyst modifications and reaction designs that will enable access to more complex nitrogen heterocycles.1 Introduction2 Expansion of Ring-Closing Metathesis Methods3 Evaluation of Catalyst Design4 Indenylidene Catalysts5 Unsymmetrical N-Heterocyclic Carbene Ligands6 Carbonyl-Olefin Metathesis7 Conclusions

Molecular Modeling of Ruthenium Alkylidene Mediated Olefin Metathesis Reactions. DFT Study of Reaction Pathways

2003 ◽  
Vol 22 (1) ◽  
pp. 93-99 ◽  
Author(s):  
Serguei Fomine ◽  
Sergio Martinez Vargas ◽  
Mikhail A. Tlenkopatchev
Keyword(s):  
Molecular Modeling ◽  
Olefin Metathesis ◽  
Dft Study ◽  
Reaction Pathways ◽  
Metathesis Reactions
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