This title provides the only comprehensive review and analysis of the use of hypervalent iodine in organic synthesis. Detailed coverage includes: synthetic transformations such as addition reactions to carbon-carbon double bonds, formation of carbon-carbon double bonds, intramolecular insertion at unactivated C-H bonds, cyclopropanation creation of the nitrogen, creation of electron deficient carbon, simple oxidation of sulfides and amines, Dess-Martin reagent and Koser's reagent. This title aims to be practical to the reader, with a focus on synthesis, particularly in natural products and commercial applications.