The synthesis of variously substituted bis‐triazinylhydrazines and their subsequent oxidation preferably with chlorine in a two‐phase system to azo‐1,3,5‐triazines starting from cyanuric chloride is reported. Reaction of ethoxycarbonylhydrazine with cyanuric chloride followed by oxidation gave access to mono‐ and bis‐ethoxycarbonyl‐1,3,5‐triazines, respectively. Azo‐1,3,5‐triazines proved to be very reactive dienophiles.
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Loew et al. (1976) studied this question.
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