ChemInform Abstract: MECHANISMS FOR REACTIONS OF HALOGENATED COMPOUNDS. PART 3. VARIATION IN ACTIVATING INFLUENCE OF HALOGEN SUBSTITUENTS IN NUCLEOPHILIC AROMATIC SUBSTITUTION
Abstract:Aus kinetischen Messungen der nucleophilen Substitution z.B. der Pyridine (I) durch Na‐methanolat zu den 4‐ bzw. 2‐Methoxyderivaten (II) (Geschwindigkeitskonstanten k = 1.90 bzw. 2.09·10‐3‐3.47·10‐5 l/mol·s) sowie für die analogen Reaktionen z.B. der Benzole (III) (k = 3.02·10‐4‐3.12·10‐6 l/mol·s) werden für die einzelnen Positionen Aktivierungseffekte ermittelt, die denen der Reaktion von (I) mit NH3 in Dioxan sehr ähnlich sind.
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