Iodine compounds inorganic reagents

Instead of metal salts, peroxides and other more sophisticated oxidants were suggested in several publications and patent applications. Rather closely related to the preferred method for the manufacture of PEDOT PSS— the oxidative polymerization with peroxodisulfates—in situ polymerizahon by peroxidic compounds has been claimed by several patent applicahons. - Another patent application utilizes so-called hypervalent iodine compounds as oxidants. Examples for inorganic hypervalent iodine compounds are iodic acid, sodium iodate (iodine-V), and sodium periodate (iodine-VII). Typical organic hypervalent iodine compounds were of the iodine-III type, for instance, Koser s reagent = hydroxy-tosyloxy iodobenzene or bis(trifluoroacetoxy) iodobenzene (see Figure 8.4). 

The formation of carbon-heteroatom bonds can be effected by reactions of hypervalent iodine reagents with a wide range of organic substrates and inorganic nucleophiles, and represents one of the most popular applications of organoiodine(III) compounds [1-10]. Except for C-I(III) bond forming reactions used for the synthesis of iodanes and iodonium salts, C-heteroatom bond formation is almost always accompanied by reduction of the hypervalent iodine reagents to iodine(I) compounds. 

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