Abstract
The direct iodination of benzanthrone and 3, 3'-dibenzanthronyl with a mixture of various oxidizers and iodine in acidic, neutral and basic media has been studied.Iodination products were separated and purified by alumina column chromatography. When benzanthrone was iodinated with a mixture of periodic acid and iodine dissolved in polyphosphoric acid and 98% sulfuric acid, 3, 9-diiodobenzanthrone was obtained in 76% yield. 3-Iodobenzanthrone was obtained in a maximum yield of 52% in acetic acid with the same oxidizing agents.From 3, 3'-dibenzanthronyl, 9-iodo-3, 3'-dibenzanthronyl was synthesized in a maximum yield of 58%.
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