Answers are grounded in this paper and cite their sources.
Syntheses of azafluorenones from monoazaphenanthrenes and phenanthrolines has ben investigated. 1‐ and 4‐monoazaphenanthrenes have been oxidized by J2O5 in acetic acid to give quinones which were converted to 4‐ and 1‐azafluoren‐9‐ones in alkaline media. Phenanthrolines can be oxidized directly by means of permanganate in alkaline medium to 1,5‐, 1,6‐, 1,8‐, 2,5‐ and 3,5‐diazafluoren‐9‐ones. From 1‐, 4‐azaphenanthrene‐ and 1,8‐phenanthrolinequinones new benzopyrido‐ and dipyridophenazines have been synthesized.
No takes yet. Share an insight, caveat, or question.
Kloc et al. (1977) studied this question.
Synapse has enriched 10 related papers. Consider them for comparative context: