Palladium-Catalyzed Cyclization of Alkynoic Acids To Form Vinyl Dioxanones Bearing a Quaternary Allylic Carbon Yohei Ogiwara Kazuya Sato Norio Sakai 10.1021/acs.orglett.7b02572.s001 https://acs.figshare.com/articles/dataset/Palladium-Catalyzed_Cyclization_of_Alkynoic_Acids_To_Form_Vinyl_Dioxanones_Bearing_a_Quaternary_Allylic_Carbon/5419540 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 systemsî—¸vinyl dioxanones bearing a quaternary allylic carbon. Mechanistic studies suggest an allenyl carboxylate as an intermediate. 2017-09-19 17:05:14 Quaternary Allylic Carbon Alkynoic Acids carboxylic acids novel cyclization manner quaternary allylic carbon Mechanistic studies Form Vinyl Dioxanones Bearing allenyl carboxylate alkyne Palladium-Catalyzed Cyclization dioxanone palladium-catalyzed intramolecular reaction