Nickel-catalyzed cyclizations of alkynyl enones and alkynyl enals

Nickel-catalyzed cyclizations of alkynyl enones and alkynyl enals

Substrates that possess an a,b-unsaturated carbonyl tethered to an alkyne have been utilized in a variety of nickel-catalyzed processes. Depending on ligand structure, reagent structure, reaction conditions, and workup conditions, several different monocyclic and bicyclic ring systems may be accesse...

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Veröffentlicht in:Pure and applied chemistry 2002-01, Vol.74 (1), p.129-133
Hauptverfasser: Montgomery, John, Amarasinghe, Kande K. D., Chowdhury, Sanjoy K., Oblinger, Eric, Seo, Jeongbeob, Savchenko, Alexey V.
Format: Artikel
Sprache:eng
Schlagworte:
Alkynes
Carbonyls
Nickel
Organometallic compounds
Reagents
Substrates
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Zusammenfassung:Substrates that possess an a,b-unsaturated carbonyl tethered to an alkyne have been utilized in a variety of nickel-catalyzed processes. Depending on ligand structure, reagent structure, reaction conditions, and workup conditions, several different monocyclic and bicyclic ring systems may be accessed from a common substrate. Evidence for a nickel metallacycle as a common intermediate is provided.
ISSN:0033-4545
1365-3075
DOI:10.1351/pac200274010129