Golden Carousel in Catalysis: The Cationic Gold/Propargylic Ester Cycle

Golden Carousel in Catalysis: The Cationic Gold/Propargylic Ester Cycle

Round and round it goes: Propargylic esters are versatile substrates for Au‐based catalysts. However, under typical conditions the starting Au‐coordinated propargylic ester 1 is in rapid equilibrium with the gold vinylic carbenoid species 2 and with gold allene species 3. A number of factors dictate...

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Veröffentlicht in:Angewandte Chemie (International ed.) 2008-01, Vol.47 (4), p.718-721
Hauptverfasser: Correa, Andrea, Marion, Nicolas, Fensterbank, Louis, Malacria, Max, Nolan, Steven P, Cavallo, Luigi
Format: Artikel
Sprache:eng
Schlagworte:
alkynes
Alkynes - chemistry
allenes
Catalysis
Cations - chemistry
density functional calculations
Esters - chemistry
gold
Gold - chemistry
homogeneous catalysis
Ligands
Models, Chemical
Molecular Structure
Stereoisomerism
Thermodynamics
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Beschreibung
Zusammenfassung:Round and round it goes: Propargylic esters are versatile substrates for Au‐based catalysts. However, under typical conditions the starting Au‐coordinated propargylic ester 1 is in rapid equilibrium with the gold vinylic carbenoid species 2 and with gold allene species 3. A number of factors dictate which intermediate is lower in energy and which type of products form.
ISSN:1433-7851
1521-3773
DOI:10.1002/anie.200703769