1992 Volume 65 Issue 4 Pages 943-948
The halogenating power of Br–Cl composite species (termed “BC-reagent” in this article) generated anodically from mixtures of Br− and Cl− in CH2Cl2 was examined in an ex-cell manner toward some organic compounds. The BC-reagent brominated methoxybenzenes, and the brominating power could be precisely controlled by means of the amount of electricity charged and by varying the ratio of Cl−/Br−. The power of the reagent was less controllable during the bromination of aniline. The reaction of olefins with the BC-reagent led to dibromination and bromochlorination, the product-selectivity of which could be also controlled. The theoretically calculated chemical composition of the BC-reagent agreed fairly well with the experimentally confirmed value in some cases.
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