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16.16 Product Class 16: Phenazines

DOI: 10.1055/sos-SD-016-01123

Urleb, U.; Gobec, S.Science of Synthesis, (200416913.

General Introduction

Phenazine,[‌1‌‌7‌] as a 5,10-diazaanthracene, exhibits a fully conjugated bond system which may be represented as a resonance hybrid of a number of canonical structures. The commonly accepted numbering system is presented in Scheme 1, which differs from the older literature in which the nitrogen atoms were labeled as the 9- and 10-positions. Quaternization of either of the heterocyclic nitrogen atoms changes the name phenazine to phenazinium salts; in the earlier literature the name phenazonium salts has been used.

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