The diazotization of anilines in aqueous solution has been found to be highly useful as a key reaction step to achieve the denitrification of lowconcentrated nitrogen dioxide in air. The diazonium salt from the wet scrubberalthough obtained in highly diluted aqueous solutionwas shown to be directly applicable in a radical Gomberg-Bachmann aryl−aryl coupling and a Sandmeyer iodination reaction.
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