1- Phenyl-4 -ethynyl-1,2,3-triazoles

Similarly, the 2-azidoethylene-l,l-dicarbonitriles (92) were found to react with aniline to give the corresponding anilino derivatives 121 Reaction of phenyl ethynyl ketone with sodium azide in an aqueous medium, it will be recalled, gave the isoxazole 74 (R = H). When this reaction was carried out in dimethylformamide, quite different results were found in this case the sodium salt of 4-benzoyl-1,2,3-triazole was isolated in good yield . The formation of this product... 

The addition of phenyl azide to diacetylene in benzene at 20-70°C has been performed (79KGS849). Depending on the amount of phenyl azide, 1-phenyl-4(5)-ethynyl-1,2,3-triazoles (96) and 4,4 -di(l-phenyl-1,2,3-triazoles) (97) were obtained in 64 and 55.5% yield, respectively. 

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