Optimization of the synthesis of 2-phenyl-1,2,3-triazole

The synthesis of 2-phenyl-1,2,3-triazole by the cyclization of glyoxal phenylosazone in high-boiling solvents in the presence of copper triflate catalyst has been optimized. The structure of the product was confirmed by data of IR, 1 H, 13 C, and 15 N NMR spectroscopy, mass spectrometry, and elemental analysis.