Journal
CHEMICAL SOCIETY REVIEWS
Volume 33, Issue 7, Pages 431-436Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/b308768a
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In this tutorial review we summarize the two major pathways followed in the reaction of alkenes with alkynes catalysed by electrophilic transition metals. If the metal coordinates simultaneously to the alkyne and the alkene, an oxidative cyclometallation can ensue to give a metallacyclopentene, which usually evolves by beta-hydrogen elimination to give Alder-ene cycloisomerisation derivatives. On the other hand, coordination of the metal to the alkyne promotes the attack of the alkene to give metal cyclopropyl carbenes.
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