Stable carbonium ions. LXXVI. 2, 2-Dimethyltetramethylene halonium ions and a study of halogen participation in protonated methyl. gamma.-halopropyl ketones and …

GA Olah, JM Bollinger, J Brinich

Index: Olah,G.A. et al. Journal of the American Chemical Society, 1968 , vol. 90, p. 6988 - 6992

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Citation Number: 12

Abstract

Abstract: Tertiary carbonium ions containing a halogen atom three carbon atoms removed from the positive site have been generated in antimony pentafluoride-sulfur dioxide solution and in fluorosulfuric acid-antimony pentafluoride dioxide solutions. When the halogen atom was C1, Br, or I, the species observed in the strong acid systems were the five-membered ring 2, 2-dimethyltetramethylene halonium ions. No evidence for halogen participation in ...