Phenoxazines, in
particular N-arylated phenoxazines, represent
an increasingly important scaffold in the material sciences. Moreover,
the oxygen-gas-mediated dehydrogenative phenochalcogenazination concept
of phenols has been developed and exemplified for X = sulfur and recently
for X = selenium and tellurium. The smallest chalcogen, X = oxygen,
is herein exemplified with various functional groups under a likewise
trivial oxygen atmosphere.
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