Severin, KayTskhovrebov, Alexander G2017-05-112017-05-112017-05-112016https://infoscience.epfl.ch/handle/20.500.14299/137265The present invention relates to a novel method for preparing cationic azo compounds, which preferably can be used as dyes. Further, the invention relates to novel cationic azo compounds and the use of N2O in the synthesis of azo-imidazolium dyes.patentWO2016058964WO201605896451845280