Abstract
AbstractThis study describes the synthesis of an acridone through the directed lithiation of a diarylamine, and elaboration via the 4,5‐dibromoacridone. The bromo substituents are amenable to Suzuki‐Miyaura coupling. Conversion to a 9‐chloro‐4,5‐dibromoacridine, followed by bromine‐lithium exchange, allows the preparation of a 4,5‐bis (phosphino)‐9‐chloroacridine. The 9‐chloro moiety undergoes nucleophilic aromatic substitution by methoxide or an aryloxide. One‐electron reduction of a 9‐(aryloxy)‐4,5‐bis(phosphino)acridine affords a stable radical anion.
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