The first truly comprehensive account of this versatile field. Classified and well-documented, it covers: * the chemistry of SNAr substitutions and anionic o-complexes * nucleophilic aromatic photosubstitutions * the possible role of electron transfer in some substitution processes * the ANRORC reactions The volume also discusses for the first time the whole field of nucleophilic aromatic substitutions of hydrogen, a subject of considerable recent interest. Researchers and students alike will appreciate the book"s balanced presentation of mechanistic and synthetic features.