A Kinetic Study on Nucleophilic Displacement Reactions of Phenyl Y-Substituted-Phenyl Carbonates with Alkali Metal Ethoxides: Metal Ion Effect and Reaction …

IH Um, JY Seo, JS Kang, JS An

文献索引：Um, Ik-Hwan; Seo, Ji-Yoon; Kang, Ji-Sun; An, Jun-Sung Bulletin of the Chemical Society of Japan, 2012 , vol. 85, # 9 p. 1007 - 1013,7

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被引用次数: 11

摘要

Pseudo-first-order rate constants (k obsd) have been measured for reactions of phenyl Y- substituted-phenyl carbonates with alkali metal ethoxides (EtOM, M= Li, Na, and K). The plot of k obsd vs.[EtOM] curves upward for the reaction of diphenyl carbonate with EtOM but is linear for that with EtOK in the presence of 18-crown-6-ether (18C6), indicating that the reaction is catalyzed by M+ ions and the catalytic effect disappears in the presence of ...