Denitrification Combined with Diazotization of Anilines and the Synthesis of 4′-Chlorobiphenyl-2,5-diamine and 1-Chloro-4-iodobenzene

Abstract

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