Summary The oxidation of sym-triiodophenol results in the formation of mononuclear quinone, dinuclear quinone of the cedriret type, chromopolydihalogenophenylene oxide (Lautemann's Red) and an unstable compound which has not been isolated. 2. 2, 6, 2, 6I- Tetraiododiphenol and 2, 6, 2, 6-tetraiododip henoquinone have been isolated for the first time. 3. The crude oxidation product formed in the oxidation of sym-triiodophenol in glacial ...