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- Intermolecular and Intramolecular Pauson–Khand Reactions of Functionalized Allenes
González-Gómez, Á.; Añorbe, L.; Poblador, A.; Domínguez, G.; Pérez-Castells, J.
Eur. J. Org. Chem. 2008, 1370-1377
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.
DOI : 10.1002/ejoc.200701038
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