Background: A molecular iodine catalyzed synthesis of quinoxalines with
phenylenediamines (1) and epoxides (2), mediated by visible-light under open atmosphere in
the absence of a photoredox catalyst, has been developed.
Methods: Good to excellent yield of the desired products was obtained at room temperature.
We have also extended our protocol by the utilization of phenacyl bromide (3).
Result: Use of photochemical activated pathway showed a considerable advantage over
previously reported methods for the synthesis of highly significant heterocycles.
Keywords: Molecular iodine, quinoxaline, aerobic oxidation, visible-light, light emitting diodes,
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