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, 1H, 13C, and 15N NMR spectroscopy, mass spectrometry, and elemental analysis.