Polychloroaromatic Compounds

The chlorination of aromatic and heteroaromatic compounds is one of the oldest and also one of the most important reactions since it heralded the rise of the heavy organic chemicals industry. Reports of polychlorobenzenes and polychloropyridines date back well into the last century and it is of historical interest that Kekule was probably the first to have prepared pentachloropyridine. Yet, in spi...