Article révisé par les pairs
Résumé : Arrhenius parameters have been determined for two nucleophilic reactions involving a series of alicyclic bromides and one secondary aliphatic bromide: Irreversible SN2 halogen exchange: RBr + I−→ RI + Br− using potassium iodide in anhydrous acetone. Solvolysis in 40,9% aqueous dioxane. The extent of reaction was determined by conductivity measurements. The relative reactivities observed for the medium and large ring compounds are discussed in terms of an internal steric effect and a transannular interaction effect. Copyright © 1959 Wiley‐VCH Verlag GmbH & Co. KGaA, Weinheim