Abstract
A number of reagents for the exhaustive chlorination of aromatic compounds were investigated. Antimony pentachloride-iodine, and the BMC reagent (sulfuryl chloride-aluminum chloride-disulfur dichloride) were found to be the most effective and convenient reagents. They are liquids which can be used without special precautions to prepare the perchloro-derivatives of biphenyl, terphenyl, naphthalene, dibenzofuran, dibenzodioxin and DDE. The structures, mass spectra and GLC properties of these compounds are discussed

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