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Kouta Fukui, Tsutomu Nonaka, Anodically-Generated Br–Cl Composite Halogenating Reagents, Bulletin of the Chemical Society of Japan, Volume 65, Issue 4, April 1992, Pages 943–948, https://doi.org/10.1246/bcsj.65.943
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Abstract
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.