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- W875583352 abstract "Rate constants have been measured spectrophotometrically for the nucleophilic substitution reactions of aryl substituted benzenesulfonates (3) with alkali metal ethoxides () and butane-2,3-dione monoximates () in ethanol at . The reactivity of the alkali metal ethoxides decreases in the order $EtO^-K^+> EtO^- > EtO^-Li^+$, indicating that ion behaves as a catalyst and ion acts as an inhibitor for all the substrates studied. For the corresponding reactions of 3 with , ion also exhibits inhibitory effect for all the substrates, while, ion shows catalytic or inhibitory effects depending on the nature of substituents on the acyl and phenyl moieties. A study of substituent effect on rate has revealed that both and systems have the same reaction mechanism. The different behavior shown by ion for the reaction of 3 with and would be attributed to a difference in charge polarization of S=O bond in the transition state between the two systems and/or a change in conformation of ." @default.
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- W875583352 date "1994-01-01" @default.
- W875583352 modified "2023-09-27" @default.
- W875583352 title "The Effect of Alkali Metal Ions on Nucleophilic Substitution Reactions of Aryl Substituted Benzenesulfonates" @default.
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