The Chemistry of the "Aminochromes": Part Iii. On the Structures of "Iodoöxoadrenochrome" and Iodoepinochrome

A substance prepared by the oxidation of adrenaline with iodic acid and described in the literature as 2-idoöxoadrenochrome appears, after consideration of a number of its physical and chemical properties to be identical with 2-iodoadrenochrome. The iodine atom in iodoepinochrome, obtained by the oxidation of epinine with potassium iodate, has been shown to be in the 2-position of the heterocyclic ring in the molecule.