Polycyclic aromatic nitrogen

As early as 1964, polycyclic aromatic hydrocarbons (PAHs) known to be carcinogenic, such as benzo[a]pyrcne, were detected in broiled meat (164). A number of papers have been published about PAHs found in smoked and thermally treated foods as a result of pyrolysis or incomplete combustion of organic matter (165 -169). Less information is available on the nitrogen analogs, the basic azaarenes polycyclic aromatic nitrogen-containing hydrocarbons (PANHs), but they have been shown to be present in association with PAHs in various samples that contain nitrogen, such as processed food (170-172). 

Arai, S., Hida, M., Polycyclic Aromatic Nitrogen Cations, 55, 261. 

Cationic polar cycloaddition, 16, 289 (19, xi) Cations, polycyclic aromatic nitrogen, 55,261 Chalcogen heterocyclic chemistry, some recent developments in, 71, 115 Chemistry... 

Polycyclic aromatic nitrogen compounds, such as quinoline, indole, acridine, and carbazole, are the main nitrogen-containing compounds in oil fractions, and monocyclic pyridine and pyrrole as well as anilines are present in coal tar (Scheme 11). Saturated cyclic amines are found as products of ring hydrogenation of the compounds shown in Scheme 11 after HDN. Aliphatic amines are rarely found in fuels and only in low concentrations after HDN since their nitrogen atoms are easily removed. 

Polycyclic aromatic nitrogen cations, 55,261 Polyfluoroheteroaromatic compounds, 28, I Polymerization of pyrroles and indoles, acid-catalyzed, 2, 1... 

Cations, polycyclic aromatic nitrogen (review), 55, 261 Cesium fluoroxysulfate fluorination of... 

III. Theoretical Aspects of Polycyclic Aromatic Nitrogen Cation Systems. 269... 

VII. Useful Applications of Polycyclic Aromatic Nitrogen Cations. 351... 

This chapter presents the synthesis of polycyclic aromatic nitrogen cations as well as their chemical and physicochemical properties. The chemistry of bicyclic and tricyclic compounds is also discussed from a theoretical standpoint. Papers published up to the end of 1990 have been covered. Some 1991 references are included. 

In the following sections, the chemistry of benzenoid and nonbenzenoid polycyclic aromatic nitrogen cations will be described. 

Typical examples of tricyclic aromatic nitrogen cations are summarized for comparison with the synthesis of polycyclic aromatic nitrogen cations, since the reviews by Bradsher (69ACR181 84MI1) and Jones [82 AHC(31)1] have described synthetic methods for tricyclic ring systems. Recent developments also will be described. 

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