Abstract Diazotization of 1-(aminophenyl)-1 H-tetrazoles and subsequent treatment of the diazonium salts with sodium azide gave 1-(azidophenyl)-1 H-tetrazoles which were brought into cyclization with ethyl acetoacetate and cyanoacetanilide to obtain 1, 2, 3-triazole derivatives. Under these conditions, the tetrazole ring may undergo cleavage with formation of cyanamide group.
