F. Palacios et al., SYNTHESIS OF DIETHYL 1,2,3-TRIAZOLEALKYLPHOSPHONATES THROUGH 1,3-DIPOLAR CYCLOADDITION OF AZIDES WITH ACETYLENES, Heterocycles, 38(1), 1994, pp. 95-102
4,5-Disubstituted 1-(diethoxyphosphorylmethyl)-1,2,3-triazoles were pr
epared through thermal 1,3-dipolar cycloaddition of diethyl azidoalkyl
phosphonates with alkynes.