Preformed-Enamine-Based Synthesis of Substituted 1,2,3-Triazoles

Preformed-Enamine-Based Synthesis of Substituted 1,2,3-Triazoles 

in the next year, Vigevani et al. prepared the dienamine 44, which on reaction with 4-nitrophenylazide furnished the corresponding triazolinic adduct. 

In 2000, Helmut Quast et al. deprotonated 2-alkyl-l-methylquinolinium hexafluorophosphates 52 by sodium or potassium hydride to afford solutions 

R = Subsituted azole group 50-93% yields R2 = 4-MePh, Me 13 examples 

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