Palladium-Catalyzed Cyclization of Alkynoic Acids To Form Vinyl Dioxanones Bearing a Quaternary Allylic Carbon,Organic Letters

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Palladium-Catalyzed Cyclization of Alkynoic Acids To Form Vinyl Dioxanones Bearing a Quaternary Allylic Carbon
Organic Letters ( IF 4.9 ) Pub Date : 2017-09-19 00:00:00 , DOI: 10.1021/acs.orglett.7b02572
Yohei Ogiwara ₁ , Kazuya Sato ₁ , Norio Sakai ₁

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A palladium-catalyzed intramolecular reaction of carboxylic acids and alkynes in a novel cyclization manner was developed. This unique cyclization efficiently provided a wide range of complex ring systems—vinyl dioxanones bearing a quaternary allylic carbon. Mechanistic studies suggest an allenyl carboxylate as an intermediate.

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