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Intermolecular and Intramolecular Pauson–Khand Reactions of Functionalized Allenes

✍ Scribed by Álvaro González-Gómez; Loreto Añorbe; Amalia Poblador; Gema Domínguez; Javier Pérez-Castells

Publisher
John Wiley and Sons
Year
2008
Tongue
English
Weight
213 KB
Volume
2008
Category
Article
ISSN
1434-193X

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✦ Synopsis

Abstract

Pauson–Khand reactions of functionalized allenes with different alkynes give cyclopentenones with generally high regio‐ and stereoselectivities. The allenes react through their external double bonds, giving cyclopentenones with exocyclic double bond at their β positions and predominantly with E stereochemistry. Some intramolecular reactions with allenynes connected through aromatic rings are described. These give the corresponding heterocycles with moderate to good yields.(© Wiley‐VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2008)

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