5-Amino-1, 2, 3-triazoles (7), possessing a strong electron-withdrawing N-1 substituent, cannot be converted into the corresponding azides by the diazotization method, but the diazo transfer on the conjugate bases with tosyl azide proceeds smoothly and was used in ...
[Massarotti, Alberto; Brunco, Angelo; Sorba, Giovanni; Tron, Gian Cesare Journal of Chemical Information and Modeling, 2014 , vol. 54, # 2 p. 396 - 406]