ChemInform Abstract: Synthesis of Enol Esters and Enol Lactones via Palladium-Catalyzed Carbonylation of Aryl and Alkenyl Halides.
Abstract
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ChemInform Abstract
Palladium-catalyzed carbonylation of the γ-iodo ketones (I) and ( IV) forms the enol lactones (III) and (V). Carbonylation of the unsaturated iodo ester (VI) produces the tricyclic lactone (VII). Palladium-catalyzed reaction of the ketones (VIII) with iodobenzene ( IX) and carbon monoxide (II) gives the corresponding enol esters (X), whereas the enol lactones (XII) are obtained from (VIIb) and the vinylic iodides (XI) under analogous conditions.
