Dramatic Acceleration of the Pd-Catalyzed [4+2] Benzannulation Reaction of Enynes and Diynes in the Presence of Lewis Acids and Bases:  Expanded Scope and New Mechanistic Insights

2006 ◽  
Vol 128 (17) ◽  
pp. 5818-5827 ◽  
Author(s):  
Marina Rubina ◽  
Matthew Conley ◽  
Vladimir Gevorgyan
Keyword(s):  
Lewis Acids ◽  
Acids And Bases ◽  
Lewis Acids And Bases

Building new discrete supramolecular assemblies through the interaction of iso-tellurazole N-oxides with Lewis acids and bases

2017 ◽  
Vol 203 ◽  
pp. 187-199 ◽  
Author(s):  
Peter C. Ho ◽  
Hilary A. Jenkins ◽  
James F. Britten ◽  
Ignacio Vargas-Baca
Keyword(s):  
Electron Acceptor ◽  
Lewis Acids ◽  
Heterocyclic Carbenes ◽  
Supramolecular Assemblies ◽  
Triphenyl Phosphine ◽  
Tellurium Atom ◽  
Lewis Bases ◽  
Acids And Bases ◽  
Lewis Acids And Bases

The supramolecular macrocycles spontaneously assembled by iso-tellurazole N-oxides are stable towards Lewis bases as strong as N-heterocyclic carbenes (NHC) but readily react with Lewis acids such as BR3 (R = Ph, F). The electron acceptor ability of the tellurium atom is greatly enhanced in the resulting O-bonded adducts, which consequently enables binding to a variety of Lewis bases that includes acetonitrile, 4-dimethylaminopyridine, 4,4′-bipyridine, triphenyl phosphine, a N-heterocyclic carbene and a second molecule of iso-tellurazole N-oxide.

Polymer-supported Lewis acids and bases: Synthesis and applications

2020 ◽  
Vol 111 ◽  
pp. 101313
Author(s):  
Utku Yolsal ◽  
Thomas A.R. Horton ◽  
Meng Wang ◽  
Michael P. Shaver
Keyword(s):  
Lewis Acids ◽  
Polymer Supported ◽  
Acids And Bases ◽  
Lewis Acids And Bases

On the behaviour of biradicaloid [P(μ-NTer)]2 towards Lewis acids and bases

2016 ◽  
Vol 52 (37) ◽  
pp. 6328-6331 ◽  
Author(s):  
Alexander Hinz ◽  
Axel Schulz ◽  
Alexander Villinger
Keyword(s):  
Lewis Acids ◽  
Heterocyclic Carbenes ◽  
Chloride Complexes ◽  
Lewis Bases ◽  
Acids And Bases ◽  
Lewis Acids And Bases

The well-known diphosphadiazane-1,3-diyl [P(μ-NTer)]2 (Ter = 2,6-bis(2,4,6-trimethyl-phenyl)-phenyl) was treated with Lewis bases such as N-heterocyclic carbenes and Lewis acids e.g. gold(i) chloride complexes.

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