Abstract
A common aspect characterizing both the homolytic animation and the substitution of protonated hetero-aromatic bases by nucleophilic free radicals is the presence of a nitrogen atom with a positive charge. This presence determines strong polar effects whether it characterizes the radical (\(R_2 \mathop N\limits_ + H\)) or the aromatic substrate (protonated base). The awareness that the global polar effects result from the polar characteristics of both the radical and the substrate has led to new homolytic aromatic substitutions, characterized by high selectivity and versatility. Thus the homolytic substitution acquires a more significant weight in the field of the aromatic substitutions.
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Minisci, F. (1976). Recent aspects of homolytic aromatic substitutions. In: Minisci, F., Hendrickson, J.B., Wentrup, C. (eds) Synthetic and Mechanistic Organic Chemistry. Topics in Current Chemistry, vol 62. Springer, Berlin, Heidelberg. https://doi.org/10.1007/BFb0046046
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DOI: https://doi.org/10.1007/BFb0046046
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