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- W51448087 abstract "The work of Ingold and others on the orientating effect of such positive poles as—NMe3+ is reviewed and two recent extensions are described. These concern the orientating effect of protonated nitrogen atoms and the partial rate factors for these and other positive substituents. Thus the nitration of Ph·NMe2H·, PH·NMeH2+ and Ph·NH3+ has been examined under conditions where kinetic studies show that nitration through the free amine is negligible. The results, together with those for the nitration of Ph·NMe3+, show that both the overall reactivity and the percentage of p-substitution increase steadily as the methyl groups of —NMe3+ are replaced by hydrogen. In the anilinium ion, the reactivity of the p-position even exceeds that of one m-position. The pattern of reactivity in these and other “onium” ions is used as a basis for discussing the interaction between positive poles and aromatic rings." @default.
- W51448087 created "2016-06-24" @default.
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- W51448087 date "1964-01-01" @default.
- W51448087 modified "2023-09-23" @default.
- W51448087 title "THE SUBSTITUENT EFFECTS OF POSITIVE POLES IN AROMATIC NITRATION**Plenary Lecture." @default.
- W51448087 doi "https://doi.org/10.1016/b978-0-08-010909-1.50011-4" @default.
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