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A novel strategy involving Cu‐catalyzed oxidative transformation of ketone‐derived hydrazone moiety to various synthetic valuable internal alkynes and diynes has been developed. This method features inexpensive metal catalyst, green oxidant, good functional group tolerance, high regioselectivity and readily available starting materials. Oxidative deprotonation reactions were carried out to form internal...
Von der gleichen Seite: Die direkte cis‐Addition von Bromalkinen 1 an Alkine 2 in Gegenwart eines Palladium(II)‐Katalysators ergibt difunktionalisierte Enine 3 als Produkte. Die Methode bietet einen einfachen Zugang zu Bromalkeninen. Ein ungewöhnlicher Reaktionsmechanismus wird vorgeschlagen.
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