This book about perfluoroheteroaromatic chemistry : multifunctional systems from perfluorinated heterocycles by nucleophilic aromatic substitution processes, monofluorinated heterocycles, synthesis of beta-Halofurans, synthesis of halogenated 5- and 6-membered sulfur- and sulfur, nitrogen containing heterocycles, heterocyclic reagents containing nitrogen-halogen bond : recent applications, recent progress on the halogen dance reaction on heterocycles, halogenated heterocycles as pharmaceuticals, sources, occurrence and fate of halogenated heterocyclic pharmaceuticals in the environment, and green methods in halogenation of heterocycles.