Aromatic Compounds without Halogen Substituents

Before the advent of the petrochemical industry carbocyclic aromatic compounds, such as naphthalene, phenol, and pyridine, provided the source of many important industrial chemicals including dyestuffs, while the monocyclic compounds continue to play an important role as fuels and starting materials. 

The degradation of aromatic compounds including hydrocarbons and phenols has attracted interest over many years, for several reasons  

They are components of unrefined oil, and there has been serious concern over the hazard associated with their discharge into the marine environment after accidents at sea. 

A number of the polycyclic representatives have been shown to be human procarcinogens that require metabolic activation. 

There has been increased concern over air pollution as a result of their presence in the atmosphere from incomplete combustion. 

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Q Carbocyclic Aromatic Compounds without Halogen Substituents... 

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