Substituent effects of positive poles in aromatic substitution. III. Chlorination and bromination of sulfonium and selenonium salts

HM Gilow, RB Camp Jr, EC Clifton

Index: Gilow,H.M. et al. Journal of Organic Chemistry, 1968 , vol. 33, # 1 p. 230 - 233

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Citation Number: 9

Abstract

Halogenation of unreactive aromatic rings can be accomplished at high temperatures. The high temperature not only makes rearrangements more likely but also apparently favors a free radical rather than an ionic mechanism. 2 Pearson and co-workers have developed a method in which 1 equiv of a strong electrophilic reagent, such as aluminum chloride, is used to complex the substrateand 1 moreequivisused to generate an active attacking ...