Helvetica Chimica Acta

Substitution électrophile aromatique dans l'anhydride sulfureux liquide. Etude cinétique de la réaction de bromation d'anisoles monosubstitués. Transmission des …

P Castellonèse, P Villa

Index: Castellonese, Paul; Villa, Pierre Helvetica Chimica Acta, 1983 , vol. 66, # 4 p. 1068 - 1077

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Abstract

Summary Reactivity-structure correlations for anisole and eleven of its substituted derivatives established from bromination rate constants in liquid SO2, unlike observations in water, show the reaction to be highly sensitive to substituent effects,-7.1; pio2=-10.51). This result is ascribed to the solvation of the methoxy group which decreases the conjugation of para-substituted@ A=-9.70) compared to that of ortho-substituted derivatives (p;=-8.86). ...