Maiorana, Stefano published the artcileEnamines. Reactions of sulfonyl- and nitroenamines with azides, Recommanded Product: 5-Nitro-1H-1,2,3-triazole, the publication is Tetrahedron Letters (1966), 6043-5, database is CAplus.
The reaction of aryl azides with enamines containing an SO2Ph, SO2C6H4NO2, or NO2 function in the β-position to the N atom was investigated. Treatment of ClCH:CHSO2Ph and p-O2NC6H4SO2CH:CHCl with morpholine gave the sulfonylenamines β-morpholinovinyl phenyl sulfone (I), m. 158°, and β-morpholinovinyl 4-nitrophenyl sulfone (II). PhN3 and 1-morpholino-2-nitroethylene (III) kept several days at 80° in a sealed tube, and then heated 5 days in refluxing EtOH containing 4-O2NC6-H4N3 gave 1-phenyl-4-nitrotriazole (IV), m. 134°, and 1-(4-nitrophenyl)-4-nitrotriazole, m. 201-2°. IV was catalytically hydrogenated to the corresponding 1-phenyl-4-aminotriazole, m. 108°. The enamines I, II, III refluxed 12-24 hrs. in alc. with p-MeC6H4SO2N3 yielded 50-80% 4-phenylsulfonyltriazole, m. 166°; 4-(p-nitrophenylsulfonyl)triazole (V), m. 212°; and 4-nitrotriazole, m. 158°, soluble in H2O giving a solution with Ka 1.6 × 10-5 at 20°. Neither diazo compounds nor amidine derivatives could be isolated.
Tetrahedron Letters published new progress about 14544-45-7. 14544-45-7 belongs to triazoles, auxiliary class Triazoles, name is 5-Nitro-1H-1,2,3-triazole, and the molecular formula is C2H2N4O2, Recommanded Product: 5-Nitro-1H-1,2,3-triazole.
Referemce:
https://en.wikipedia.org/wiki/1,2,3-Triazole,
Triazoles – an overview | ScienceDirect Topics